PVmaster

PV
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Operation manual r

Large-scale inverters

PVM 450-033 TT, ET, CM

PVM 450-047 TT, ET, CM
PVM 450-068 TT, ET, CM
PVM 450-100 TT, ET, CM
Notes on the operation manual

The safety instructions and symbols in this operation manual are defined as
follows:

Danger! Failure to comply may result in fatality or injury!

Danger! Risk of fatality or injury from electrical voltage!

Caution! Failure to comply may result in damage to the system!

Note
Useful information.

Reference to another document.

• Handling instructions
Terms written in italics are those which appear on the display.

No.: 181-10017

Date: 11/2009
Revision: 1

2 Notes on the operation manual PVmaster

Table of contents

1 Safety instructions and procedures/regulations 5

1.1 Taking precautions for your safety . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Description of system 9

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3 Prerequisites 13

3.1 Conditions at the site of placement . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.1 Dimensions and weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Exhaust air heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Transport and placement 17

4.1 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5 Installation 19

5.1 Installing PVM 450-033 and PVM 450-047 . . . . . . . . . . . . . . . . . 20

5.1.1 Overview of PVM 450 TT and CM . . . . . . . . . . . . . . . . . . . 20
5.1.2 Overview of PVM 450 ET . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.3 External isolation transformer for PVM 450 ET . . . . . . . . . 22
5.1.4 Photovoltaic generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1.5 Supply network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1.6 Auxiliary voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Installing PVM 450-068 and PVM 450-100 . . . . . . . . . . . . . . . . . 27
5.2.1 Overview of PVM 450 TT and CM . . . . . . . . . . . . . . . . . . . 27
5.2.2 Overview of PVM 450 ET . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.3 External isolation transformer for PVM 450 ET . . . . . . . . . 29
5.2.4 Photovoltaic generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2.5 Supply network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2.6 Auxiliary voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

PVmaster Table of contents 3

 5.3 Installing external automatic disconnection device . . . . . . . . . . . . 35
5.4 Start the communication module . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.5 Connecting power reduction and S0 interface of electricity meter 38
5.5.1 Connecting power reduction . . . . . . . . . . . . . . . . . . . . . . . . 38
5.5.2 Connecting S0 interface of electricity meter . . . . . . . . . . . . 39

6 Operation 41

6.1 Switching on the PVmaster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

6.2 Switching off the PVmaster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.3 Operation indicator lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.3.1 LED display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.3.2 WebVisualization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.3.3 Touchscreen display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.4 Testing the internal automatic disconnection device . . . . . . . . . . 56
6.5 Copying files from the compact flash card . . . . . . . . . . . . . . . . . . 57

7 Description of operation 59

7.1 Block schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7.2 Procedure for switching on and off . . . . . . . . . . . . . . . . . . . . . . . . 60

8 Inspection 63

9 Troubleshooting 65

9.1 Description of fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

9.2 Resetting faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.2.1 WebVisualization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.2.2 Touchscreen display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.3 Carrying out a reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.4 LTi helpline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

A Appendix 69

A.1 Description of WebVisualization parameters . . . . . . . . . . . . . . . . 69

A.2 Description of touchscreen display parameters . . . . . . . . . . . . . . 75

4 Table of contents PVmaster

 1.1 Taking precautions for your safety

1 Safety instructions and procedures/regulations

1.1 Taking precautions for your safety

In order to avoid personal injury or damage to equipment, read the following
instructions before putting into operation for the first time.
First read the operating instructions!
– Read and follow the safety instructions!
– Take note of the user information!

Danger of electric shock from live subassemblies!

Before working on the plant, carry out the following steps:
• Disconnect the plant.
• Take measures to prevent the plant from being switched on again.
• Make sure that the plant is not live.
• Earth the subassemblies and short-circuit them.
• Cover or encase in a safety cage any neighbouring subassemblies which are
still live.

Your qualification:
– In order to avoid personal injury and prevent damage to equipment, only
qualified and trained electrical engineers are permitted to work on the
equipment.
– The qualified person must familiarise himself/herself with the operating
instructions.
– The national accident prevention regulations (e. g. BGV A3 in Germany)
must be complied with.

During installation, pay attention to the following:

– Compliance with the connection conditions and technical specifications is
mandatory.
– Pay attention to the standards for electrical installation, e. g. conductor cross
sectional area, protective earth and earth connection.
– Do not touch electronic components or contacts
(components can be destroyed by electrostatic discharge).

PVmaster Safety instructions and procedures/regulations 5

 1.2 Intended use

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
PVmaster:
Danger! 1 DC line - supply from the photovoltaic generator
2 AC line - supply to the electricity supply company grid
3 AC line - auxiliary voltage supply
• Before starting work, make sure that the plant is not live.

Danger of electric shock from live subassemblies!

The intermediate circuit of the inverter may still be live after the voltage has been
Danger! switched off.
• Wait five minutes until the voltage has dissipated and make sure the equipment
is no longer live.

Danger of electric shock from live subassemblies!

Danger! Photovoltaic modules are energised as soon as they are exposed to daylight.
• Take the necessary measures to verify safe isolation from supply.

1.2 Intended use

The PVmaster is a photovoltaic inverter for converting direct current into
alternating current conforming to the national grid.
Any other use or use beyond that described is therefore considered incorrect use.
The manufacturer/supplier is not liable for any damage resulting from incorrect
use. The operator alone bears the risk.
The PVmaster is state-of-the-art technology built in accordance with the
recognised safety regulations. All equipment is thoroughly checked before
dispatch. Nevertheless, incorrect or improper use may result in the death or injury
of the user or third party or damage to the equipment or other property.
Correct use also includes following the operating instructions.
The PVmaster must be installed by a recognised specialist company which is
responsible for following the existing standards and regulations. Repairs may only
be carried out by authorised repair centres. Unauthorised interventions or
interventions carried out without permission can result in death, physical injury
and damage to property. LTi DRiVES GmbH is not liable for any damage and the
guarantee will become void.

6 Safety instructions and procedures/regulations PVmaster

 1.3 Standards and guidelines

1.3 Standards and guidelines

The PVmaster series complies with the stipulations of the VDN (Association of
Network Providers e.V. with the VDEW (German Electricity Association)) in
accordance with the instruction sheet (March 2004) for the VDEW guideline
"Eigenerzeugung am Niederspannungsnetz (Private generation on the low-
voltage network), Edition 4, 2001".
During the electrical installation, the regulations of the VDE and the electricity
supply company must be followed.
Declaration of conformity
The PVmaster satisfies all the design and safety requirements laid down in the
Electromagnetic Compatibility Directive (2004/108/EC) and the Low Voltage
Directive (2006/95/EC).
The PVmaster series also complies with the following standards and guidelines:
– DIN EN 50178: 1998-04
Electronic Equipment for Use in Power Installations
– DIN EN 61000-6-2; 2006-03
Electromagnetic Compatibility - Part 6-2: Generic standards - Immunity for
Industrial Environments
– DIN EN 61000-6-4: 2007-09
Electromagnetic Compatibility - Part 6-4: Generic standards - Generic
Standard Interference Emission for Industrial Environments
– DIN V VDE V 0126-1-1: 2006-02
Automatic disconnection device between a generator and the public low-
voltage grid
– DIN EN 60439-1: 2005-01, supplementary sheet 2:2009-05
Low-voltage switchgear and control gear assemblies - Part 1: Type-tested and
partially type-tested assemblies
– DIN EN 50274: 2002-11
Low-voltage switchgear and control gear assemblies - Protection against
electric shock - Protection against unintentional direct contact with hazardous
live parts

PVmaster Safety instructions and procedures/regulations 7

 1.3 Standards and guidelines

8 Safety instructions and procedures/regulations PVmaster

 2.1 Overview

2 Description of system

2.1 Overview

PV
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PV
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PV r
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1
1
0
0

PVM 450-033 TT, CM PVM 450-047 TT, CM PVM 450-068 TT, CM

PVM 450-033 ET PVM 450-047 ET
PVM 450-068 ET
PVM 450-100 ET

PV
ma
ste
r

PVM 450-100 TT, CM

Figure 2.1 PVmaster series

PVmaster Description of system 9

 2.2 Description

2.2 Description

PV
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ter

1
2

3
1
4
0

8
9
10

Figure 2.2 Description of system outside

Legend
1 Exhaust air opening 6 DC main switch
2 Touchscreen display / LED display with 7 AC main switch
RJ45 socket for PC (optional) 8 Air inlet opening with filter
3 Inverter enable switch 9 Base trim panel
4 Enclosure door 10 Base feet
5 Door handle with lock

The PVmaster series covers a power range from 33 to 100 kilowatts. Each size
is optimised for its power class and therefore achieves a high level of efficiency.
The modular design provides for a variety of equipment options. The operating
state and parameters of the PVmaster can be displayed and adjusted on site via
a touchscreen display or via the integrated "WebVisualization" user interface. The
operating state can also be indicated via an LED display. All the relevant
PVmaster data in the online monitoring system can be viewed at
www.pvmaster.de via the optional GPRS communication module.
The PVmaster is available in the following topology configurations:
– PVM 450 TT with an internal isolation transformer
– PVM 450 ET with an external isolation transformer
– PVM 450 CM with an internal transformer without electrical isolation between
AC and DC sides
The PVmaster series is prepared for immediate use. It is only necessary to install
the AC and DC conductors coming from outside. Start of operation is therefore a
quick and uncomplicated process.

10 Description of system PVmaster

 2.2 Description

2.2.1 Order code

The order code is composed as follows:
• Select an optional extra from all the items (1 to 11) in the following table. String
them together using "-" as a separator.
A zero (0) indicates an optional extra which has not been selected or which cannot
be selected.
Example: PVM 450-033-TT-2-1-1-1-2-1-1-2-0
PVmaster 450, power class 33 kW, internal isolation transformer, supply voltage
400 V, isolation monitoring device on PV generator, mains monitoring device,
AC surge arrester, LED display, GPRS communication module, 100 mm base and
exhaust air opening collar prepared for exhaust air system.

Item Description PVM 450

1 Power class [kW]
033
047
068
100
200
2 Topology
Internal isolation transformer TT
External isolation transformater ET
Without electrical isolation CM
3 System voltage1)
290 V 0
400 V 2
690 V 3
4 Earthing
Isolation monitoring device of PV generator 1
- pole of PV generator earthed 2
+ pole of PV generator earthed 3
5 Mains monitoring device
Mains monitoring device conforming to DIN V VDE V 0126-1: 0/1
2006-02
6 Surge arrester
AC surge arrester 0/1
7 Display
Touchscreen display 1
LED display 2
8 Remote data transmission
GPRS communication module 0/1
9 Base (height)
100 mm 1
200 mm 2
10 Exhaust air opening
Ventilation attachment if no exhaust air system present2) 1
Collar for exhaust air system 2
11 Additional function
Not assigned 0
1) Other supply voltages on request
2) Only for PVM 450-033, 047 kW

PVmaster Description of system 11

 2.3 Technical data

2.3 Technical data

PVM 450-033 PVM 450-047 PVM 450-068 PVM 450-100
Input DC
Recommended 1.14 AC power
PV generator output
Maximum 850 V
DC voltage
Rated current DC 80 A 120 A 160 A 250 A
Output AC
AC power 33 kW 47 kW 68 kW 100 kW
AC voltage 400 V / 690 V
(further on request)
Line fuse 63 A 80 A 120 A 160 A
400 V connection
Network configuration TN S / TN C
Frequency 50/60 Hz
Power factor λ ≥ 0.99
Total harmonic distortion <3%
(THD) at Pnominal
Efficiency
η (nominal) > 961) %, > 972) %, > 983) %
η (euro) > 951) %, > 962) %, > 973) %
Power consumption
Quiescent state 1.5 W
Other characteristics
MPP range 450 to 850 V
MPP tracker 1
Environmental conditions
Cooling air requirement
TT, CM 550 m3/h 1100 m3/h 1650 m3/h 1650 m3/h
ET 550 m3/h 1100 m3/h 1100 m3/h 1100 m3/h
Temperature range
During operation -20 to +40 °C
During shipment -25 to +70 °C
Relative humidity 15 to 85 %, condensation not permitted
Protection class IP 43
Pollution level 2
as per EN 60664-1
For dimensions and weights see Section 3.1.1
1) PVmaster 450 TT with transformer; with electrical isolation between DC input and AC output
2) PVmaster 450 CM without electrical isolation between DC input and AC output
3) PVmaster 450 ET with external transformator
Table 2.1 Technical data

12 Description of system PVmaster

 3.1 Conditions at the site of placement

3 Prerequisites

3.1 Conditions at the site of placement

The site of placement must satisfy the following criteria:
– The foundation must be designed for the weight (PVmaster and transport
equipment) and floor space. It must also be ensured that the PVmaster is
securely positioned.
– The ambient temperature must be between -20 °C and 40 °C. Arrangements
must be made to cover the air supply to the PVmaster and removal of exhaust
air. The relative humidity must be between 15 % and 85 %.
– The site of placement must be chosen so that the PVmaster can be accessed
from the front and so that there is sufficient space between the top of the
equipment and the ceiling to install the exhaust air system (Fig. 3.3, 3).
– The enclosure must be protected from gnawing damage caused by rodents.
This is particularly pertinent in the case of the openings for the exhaust air
system (Fig. 3.3, 1, 2) and the cable openings (Fig. 5.1, 1).

3.1.1 Dimensions and weight

PVM 450 TT and CM

B B
B B PV
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ste
PV r
ma
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r

PV
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PV r
ma
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r

A 1

0
1

0
1

C H H H H

F E D

T T T T

PVM 450-033 TT,CM PVM 450-047 TT,CM PVM 450-068 TT,CM PVM 450-100 TT,CM

Figure 3.1 Dimensional drawing for PVM 450 TT and CM

Legend

PVM 450-033 PVM 450-047 PVM 450-068 PVM 450-100

Device
TT, CM TT, CM TT, CM TT, CM
Width (B) 600 mm 800 mm 1200 mm 1400 mm
Height (H) 1800 mm 1800 mm 1800 mm 1800 mm
Depth (T) 600 mm 600 mm 600 mm 600 mm
A 177 mm
C 244 mm

PVmaster Prerequisites 13
 3.1 Conditions at the site of placement

PVM 450-033 PVM 450-047 PVM 450-068 PVM 450-100

Device
TT, CM TT, CM TT, CM TT, CM
D 10 mm
E 246 mm
F 177 mm 277 mm 177 mm 277 mm
Weight
TT 360 kg 500 kg 700 kg 900 kg
CM 270 kg 380 kg 530 kg 670 kg
Dimensions excluding base and attachments

PVM 450 ET

B B
PV
ma
ste
PV r
ma
ste
r

A 1

0
1

C H H

F E D

T T

PVM 450-033 ET PVM 450-047 ET

PVM 450-068 ET
PVM 450-100 ET

Figure 3.2 Dimensional drawing for PVM 450 ET

Legend

PVM 450-033 PVM 450-047 PVM 450-068 PVM 450-100

Device
ET ET ET ET
Width (B) 600 mm 800 mm
Height (H) 1800 mm 1800 mm 1800 mm 1800 mm
Depth (T) 600 mm 600 mm 600 mm 600 mm
A 177 mm
C 244 mm
D 10 mm
E 246 mm
F 177 mm 277 mm
Weight 190 kg 290 kg 400 kg 510 kg
Dimensions excluding base and attachments

14 Prerequisites PVmaster
 3.2 Exhaust air heat

3.2 Exhaust air heat

The fans are located in the door of the enclosure. The air is sucked in from outside
through the openings in the door of the enclosure and expelled through an
opening in the roof. In order to prevent the room from heating up, we recommend
fitting an exhaust air extraction system (3) to route the exhaust air outside. This
will obviate the need to install an air conditioning unit. The dimensioning of the
exhaust air system depends on the PVmaster output, the site conditions and the
exhaust air system used.

PV
ma
ste
r

4
1

Figure 3.3 Exhaust air discharge

Legend
1 Air supply opening for the room
2 Opening for the exhaust air system
3 Exhaust air system
4 Air supply opening for PVmaster

PVmaster Prerequisites 15
 3.2 Exhaust air heat

16 Prerequisites PVmaster
 4.1 Transport

4 Transport and placement

4.1 Transport
The PVmaster must be transported upright. Care must be taken during transport
to avoid vibrations and to avoid tipping the enclosure. The weight must also be
taken into account.
The centre of gravity of the enclosure is off-centre.
It is important to provide a wide area to set the PVmaster down in order to avoid
Danger!
tipping the enclosure. The enclosure should be picked up from the front or from
the back only.

4.2 Placement
The PVmaster 450-033 to 450-068 is delivered on a pallet.
• When preparing to lift down the enclosure, pick it up so that it is on the base
feet.
The PVmaster 450-100 is fitted with a special transport base (1).
• Unscrew the base trim panels (3).
• Pick up the enclosure from the front or from the back.

PV PV
ma ma
ste ste
r r

1 1

0 0

1
2

Figure 4.1 Forklift transportation of PVM 450-100

Legend
1 Transport base
2 Base feet
3 Base trim panels

PVmaster Transport and placement 17

 4.2 Placement

18 Transport and placement PVmaster

5 Installation

Danger of electric shock from live subassemblies!

Before working on the plant, carry out the following steps:
• Disconnect the plant.
• Take measures to prevent the plant from being switched on again.
Danger!
• Make sure that the plant is not live.
• Earth the subassemblies and short-circuit them.
• Cover or encase in a safety cage any neighbouring subassemblies which are
still live.

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
PVmaster:
Danger! 1 DC line - supply from the photovoltaic generator
2 AC line - supply to the electricity supply company grid
3 AC line - auxiliary voltage supply
• Before starting work, make sure that the plant is not live.

Danger of electric shock from live subassemblies!

The intermediate circuit of the inverter may still be live after the voltage has been
Danger! switched off.
• Wait five minutes until the voltage has dissipated and make sure the equipment
is no longer live.

Danger of electric shock from live subassemblies!

Danger! Photovoltaic modules are energised as soon as they are exposed to daylight.
• Take the necessary measures to verify safe isolation from supply.

The PVmaster series is prepared for immediate use. It is only necessary to install
the AC and DC conductors coming from outside.

Note
The installation process is identical for the PVmaster PVM 450 TT and CM. The
isolation transformer is also connected in the case of the PVmaster PVM 450 ET.

PVmaster Installation 19
 5.1 Installing PVM 450-033 and PVM 450-047

5.1 Installing PVM 450-033 and PVM 450-047

5.1.1 Overview of PVM 450 TT and CM

10

9
11
12

PWR

LOCK
CF

13
14
15
Pow
COMer
Data
Statu
s

Rese

16
t

RJ-45/Line

RS 232
17

18
19
8
7
6
5 0
OFF
1
ON

+
4 – 0
OF
F
1
ON

L1
L2
L3

2
1

Figure 5.1 Plant description inside

Legend
1 Cable opening 11 Data acquisition
2 PE busbar 12 Controller
3 Transformer 13 Communication module (optional)
4 Cable clamping rail 14 Power supply unit
5 AC main switch (2Q5) 15 Insulation monitor (PVM 450 TT only,
6 Connection for auxiliary voltage (X5.1) optional)
7 DC main switch (1Q1) 16 Key-operated control voltage switch
8 PV generator earthing (PVM 450 TT only, optional) 17 Auxiliary voltage bridge (X5)
9 Inverter 18 DC overvoltage protector
10 Automatic circuit breakers (2F7, 3F1, 3F4) 19 Circuit breakers (1F5)

20 Installation PVmaster
 5.1 Installing PVM 450-033 and PVM 450-047

5.1.2 Overview of PVM 450 ET

10

9
11
12

PWR

LOCK
CF

13
14
15
Pow
COMer
Data
Statu
s

Rese

16
t

RJ-45/Line

RS 232
17

18
8 19
7 1
2
3
PE
4

6 5
6
PE

5
0
OFF
1
ON 4 0
OFF
1
ON

0 0
12 12
5 5
1N 1N
+ +
3
X2

X2

– –
X5.1

X5.1

0 1 0 1
OF ON OF ON
F F

0 0

8 L1 L1
L2 L2
L3 L3

PMV 450-033
2
1

PMV 450-047

Figure 5.2 Plant description, inside

Legend
1 Cable opening 11 Data acquisition
2 PE busbar 12 Controller
3 Cable clamping rail 13 Communication module (optional)
4 AC main switch (2Q5) 14 Power supply unit
5 Connection for auxiliary voltage (X5.1) 15 Insulation monitor
6 DC main switch (1Q1) 16 Key-operated control voltage switch
7 PV generator earthing (optional) 17 Auxiliary voltage bridge (X5)
8 Terminal clamps for external isolation transformer 18 DC overvoltage protector
9 Inverter 19 Circuit breakers (1F5)
10 Automatic circuit breakers (2F7, 3F1, 3F4)

PVmaster Installation 21
 5.1 Installing PVM 450-033 and PVM 450-047

5.1.3 External isolation transformer for PVM 450 ET

Technical data for external isolation transformer:

Connection Temperature
Primary/secondary winding Output [kVA]
symbol sensor
PVM 450-033 290 V / 400 V 36 Yy KTY
PVM 450-047 290 V / 400 V 52 Yy KTY
Table 5.1 Technical data for external isolation transformer

The external isolation transformer is connected to the supply via the terminal
clamps (Fig. 5.2, 8):
Danger of electric shock from live subassemblies!
Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

• Please refer to the table for information on the primary and secondary winding
cable cross-sections in the external isolation transformer:

Cable cross-section
Primary winding (290 V) Secondary winding (400 V) Tightening torque [Nm]
Terminals 1, 2, 3, PE Terminals 4, 5, 6, PE
[mm2] [mm2]
PVM 450-033 16 10 2.5 ... 3
PVM 450-047 25 16 4 ... 4.5
Table 5.2 Terminal clamps for external isolation transformer

Caution! Connect the transformer with clockwise phase rotation.

• Feed the cables through the cable opening (Fig. 5.2, 1) in the base of the
enclosure.
• Connect the primary end of the transformer to the terminals
(Fig. 5.2, 8) 1/L1, 2/L2, 3/L3 and PE.
• Connect the secondary end of the transformer to the terminals (Fig. 5.2, 8)
4/L1, 5/L2, 6/L3 and PE.
• Connect the KTY sensor to terminal X3.
• Fasten the cables to the clamping rail (Fig. 5.2, 3) to take the strain.

22 Installation PVmaster
 5.1 Installing PVM 450-033 and PVM 450-047

5.1.4 Photovoltaic generator

PWR

LOCK
CF

Pow
COMer
Data
Statu
s

Rese
t

RJ-45/Line

RS 232
0 1
OF ON
F

2 +
0 1
OFF ON

–
0

+
0
– 0

OF
1

6
OF ON
F

F 0

L1
9 L2
L3

Figure 5.3 Pin connections, DC main switch

Legend
2 Terminal clamp, DC (L+) from PV generator
6 Terminal clamp, DC (L-) from PV generator
9 Terminal clamp, protective earth conductor (PE)

The photovoltaic generator is connected to the supply via the DC main switch
(Fig. 5.1, 7).
Danger of electric shock from live subassemblies!
Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

• Identify the cable cross-section as dictated by local conditions. This depends

on cable protection, ambient temperature and installation method.
• Feed the DC cables through the cable opening (Fig. 5.1, 1) in the base of the
enclosure.
• Screw the protective conductor (PE) to the terminal clamp (9).
• Remove the protective caps from the terminal clamps (2 and 6).
• Fit the cables with ring lugs.

DC main switch tightening torque [Nm]

PVM 450-033, 047 9

• Screw the cable (L+) to the terminal clamp (2).

• Screw the cable (L-) to the terminal clamp (6).
• Replace the protective caps.
• Fasten the cables to the clamping rail (Fig. 5.1, 4) to take the strain.

PVmaster Installation 23
 5.1 Installing PVM 450-033 and PVM 450-047

5.1.5 Supply network

Pow
COMer
Data
Statu
s

Rese
t

RJ-45/Line

RS 232
0 1
OF ON
F

0 0
OFF
1
ON

+
– 0
OF
1
ON
F

2T1 L1 L1
L2
L3

4T2 L2
6T3
7
L3
8

Figure 5.4 Pin connections, AC main switch

Legend
2T1 Terminal clamp L1 for the supply network 7 Terminal clamp for neutral conductor (N)
4T2 Terminal clamp L2 for the supply network 8 Terminal clamp, protective earth conductor (PE)
6T3 Terminal clamp L3 for the supply network

The following network types can be connected:

– TN S: 5 conductor system
(neutral conductor and protective conductor are separate)
The public supply network is connected to the supply via the AC main switch
(Fig. 5.1, 5):
Danger of electric shock from live subassemblies!
Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

• Identify the cable cross-section as dictated by local conditions. This depends

on cable protection, ambient temperature and installation method.
• Feed the AC cables through the cable opening (Fig. 5.1, 1) in the base of the
enclosure.
• Screw the protective conductor (PE) to the terminal clamp (8).
• Remove the protective caps from the terminal clamps (2T1, 4T2 and 6T3).
• Fit the cables with wire end ferrules.

AC main switch tightening torque [Nm]

PVM 450-033, 047 9

• Screw the L1 cable to the terminal clamp (2T1).

• Screw the L2 cable to the terminal clamp (4T2).
• Screw the L3 cable to the terminal clamp (6T3).
• Replace the protective caps.
• Screw the neutral conductor (N) to the terminal clamp (7).
• Fasten the cables to the clamping rail (Fig. 5.1, 4) to take the strain.

24 Installation PVmaster
 5.1 Installing PVM 450-033 and PVM 450-047

5.1.6 Auxiliary voltage supply

The PVmaster peripheral devices can be supplied via the generated voltage
(internal power supply) or via an auxiliary voltage supply (external power supply)
according to choice. The voltage supply is changed via the bridges (X5). The
auxiliary voltage is connected to the terminals (X5.1). The PVmaster is set at
internal power supply when delivered.
25
1N
PWR

LOCK
CF

PE
Pow
COMer
Data
Statu
s

Rese
t

RJ-45/Line

RS 232
X5.1

0 1
OF ON
F
1
N
PE
0
OFF
1
ON
0
1
0

+
4
– 7
0
OF
F
1
ON

2
0
5
8
3
L1
L2 6
L3 9
N
N
N

10

Figure 5.5 Pin connections, AC auxiliary voltage

Legend
1 Terminal clamp L1 (X5.1/1)
N Terminal clamp for neutral conductor (X5.1/N)
PE Terminal clamp for protective earth conductor (X5.1/PE)
10 Bridges, change of voltage supply (X5)

Failure to comply may result in damage to the system!

Caution!
Fit a max. 16-amp fuse to protect the auxiliary voltage supply.

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

Note
The auxiliary voltage supply can only be connected to a TN S network (five-wire
system).

PVmaster Installation 25
 5.1 Installing PVM 450-033 and PVM 450-047

• Change over the bridge (Fig. 5.5, 10) on terminals 1 and 4 to terminals 4 and 7.
• Change over the bridge (Fig. 5.5, 10) on the N terminals accordingly.
• Identify the cable cross-section as dictated by local conditions. This depends
on cable protection, ambient temperature and installation method.
• Feed the AC cables through the cable opening (Fig. 5.1, 1) in the base of the
enclosure.

Z1 G1 L1 C1 T1 Z2 2Q2 VN

L1
=
L2
~ L3
N
PE
1 2 3 N
X5
4 5 6 N HS (X5.1)
4 7 16 A
1
1
4
7
2
1Q1 5
8
3
6 N N
9 N
N
N
N PE
PV

PP
X5

Figure 5.6 Block diagram for auxiliary voltage supply

Legend
PV Photovoltaic generator Z2 EMC filter
1Q1 DC main switch 2Q5 AC main switch
Z1 EMC filter VN Supply network
G1 Inverter HS Connection for auxiliary voltage (X5.1)
L1 Inductor X5 Bridges, change of voltage supply (X5)
C1 Capacitor PP Peripheral devices for PVmaster
T1 Transformer

• Screw the protective earth cable (PE) to the terminal clamp (Fig. 5.5, PE).
• Screw the L1 cable to the terminal clamp (Fig. 5.5, 1).
• Screw the neutral conductor (N) to the terminal clamp (Fig. 5.5, N).
• Fasten the cables to the clamping rail (Fig. 5.1, 4) to take the strain.

26 Installation PVmaster
 5.2 Installing PVM 450-068 and PVM 450-100

5.2 Installing PVM 450-068 and PVM 450-100

5.2.1 Overview of PVM 450 TT and CM

3
4
5

PWR

LOCK
CF
6
7
8
9
10
Powe
COM r
Data
Statu
s

Rese
t

RJ-45/Line

RS 232
11
12
13
14

1
15

0 1
16
OF ON
F

0 1
OFF ON

0 17

18
19

Figure 5.7 Plant description, inside

Legend
1 Transformer 11 Auxiliary voltage bridge (X5)
2 Inverter 12 DC main switch (1Q1)
3 Automatic circuit breakers (2F7, 3F1, 3F4) 13 DC overvoltage protector
4 Data acquisition 14 Circuit breakers (1F5)
5 Controller 15 AC main switch (2Q5)
6 Communication module (optional) 16 Connection for auxiliary voltage (X5.1)
7 Power supply unit 17 Cable clamping rail
8 Insulation monitor (PVM 450 TT only, optional) 18 Cable opening
9 PV generator earthing (PVM 450 TT only, optional) 19 PE busbar
10 Key-operated control voltage switch

PVmaster Installation 27
 5.2 Installing PVM 450-068 and PVM 450-100

5.2.2 Overview of PVM 450 ET

10

9
11
12

PWR

LOCK
CF

13
14
15
Pow
COMer
Data
Statu
s

Rese

16
t

RJ-45/Line

RS 232
17

18
8 19
7 1
2
3
PE
4

6 5
6
PE

5
4 0
OFF
1
ON

0
12
5
1N
+
3
X2

–
X5.1

0 1
OF ON
F

L1
L2
L3

2
1

Figure 5.8 Plant description, inside

Legend
1 Cable opening 11 Data acquisition
2 PE busbar 12 Controller
3 Cable clamping rail 13 Communication module (optional)
4 AC main switch (2Q5) 14 Power supply unit
5 Connection for auxiliary voltage (X5.1) 15 Insulation monitor
6 DC main switch (1Q1) 16 Key-operated control voltage switch
7 PV generator earthing (optional) 17 Auxiliary voltage bridge (X5)
8 Terminal clamps for external isolation transformer 18 DC overvoltage protector
9 Inverter 19 Circuit breakers (1F5)
10 Automatic circuit breakers (2F7, 3F1, 3F4)

28 Installation PVmaster
 5.2 Installing PVM 450-068 and PVM 450-100

5.2.3 External isolation transformer for PVM 450 ET

Technical data for external isolation transformer:

Connection Temperature
Primary/secondary winding Output [kVA]
symbol sensor
PVM 450-068 290 V / 400 V 75 Yy KTY
PVM 450-100 290 V / 400 V 110 Yy KTY
Table 5.3 Technical data for external isolation transformer

The external isolation transformer is connected to the supply via the terminal
clamps (Fig. 5.8, 8):
Danger of electric shock from live subassemblies!
Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

• Please refer to the table for information on the primary and secondary winding
cable cross-sections in the external isolation transformer:

Cable cross-section
Primary winding (290 V) Secondary winding (400 V) Tightening torque [Nm]
Terminals 1, 2, 3, PE Terminals 4, 5, 6, PE
[mm2] [mm2]
PVM 450-068 50 35 6 ... 8
PVM 450-100 95 70 15 ... 20
Table 5.4 Terminal clamps for external isolation transformer

Caution! Connect the transformer with clockwise phase rotation.

• Feed the cables through the cable opening (Fig. 5.8, 1) in the base of the
enclosure.
• Connect the primary end of the transformer to the terminals
(Fig. 5.8, 8) 1/L1, 2/L2, 3/L3 and PE.
• Connect the secondary end of the transformer to the terminals (Fig. 5.8, 8)
4/L1, 5/L2, 6/L3 and PE.
• Connect the KTY sensor to terminal X3.
• Fasten the cables to the clamping rail (Fig. 5.8, 3) to take the strain.

PVmaster Installation 29
 5.2 Installing PVM 450-068 and PVM 450-100

5.2.4 Photovoltaic generator

PWR

LOCK
CF

Powe
COM r
Data
Statu
s

Rese
t

RJ-45/Line

RS 232
0 1
OF ON
F

0 1
OF ON
F
2
0

6
0 1
OF ON
F

9 0

0 1
OFF ON

Figure 5.9 Pin connections for DC main switch

Legend
2 Terminal clamp, DC (L+) from PV generator
6 Terminal clamp, DC (L-) from PV generator
9 Terminal clamp, protective earth conductor (PE)

The photovoltaic generator is connected to the supply via the DC main switch
(Fig. 5.7, 12).
Danger of electric shock from live subassemblies!
Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

• Identify the cable cross-section as dictated by local conditions. This depends

on cable protection, ambient temperature and installation method.
• Feed the DC cables through the cable opening (Fig. 5.7, 18) in the base of the
enclosure.
• Screw the protective conductor (PE) to the terminal clamp (9).
• Remove the protective caps from the terminal clamps (2 and 6).
• Fit the cables with ring lugs.

DC main switch tightening torque [Nm]

PVM 450-068, 100 20

• Screw the cable (L+) to the terminal clamp (2).

• Screw the cable (L-) to the terminal clamp (6).
• Replace the protective caps.
• Fasten the cables to the clamping rail (Fig. 5.7, 17) to take the strain.

30 Installation PVmaster
 5.2 Installing PVM 450-068 and PVM 450-100

5.2.5 Supply network

1
ON 0
OF
1
ON
F

0 1
OFF ON
0
0

0 1
OF ON
F

NP
0 E

2T1
4T2
6T3
7
8
9

Figure 5.10 Pin connections, AC main switch

Legend
2T1 Terminal clamp L1 for the supply network 7 Terminal clamp for neutral conductor (N)
4T2 Terminal clamp L2 for the supply network 8 Bridge (TN C)
6T3 Terminal clamp L3 for the supply network 9 Terminal clamp, protective earth conductor (PE)

The following network types can be connected:

– TN S: 5 conductor system
(neutral conductor and protective conductor are separate)
– TN C: 4 conductor system (as supplied)
(neutral conductor and protective conductor are combined in one)

If it is a TN S network, it is necessary to remove the bridge (8) between the

Caution! neutral terminal clamp (7) and the protective earth terminal clamp (9).
Connect the supply network with clockwise phase rotation.

The public supply network is connected to the supply via the AC main switch
(Fig. 5.7, 15):
Danger of electric shock from live subassemblies!
Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

• Identify the cable cross-section as dictated by local conditions. This depends

on cable protection, ambient temperature and installation method.
• Feed the AC cables through the cable opening (Fig. 5.7, 18) in the base of the
enclosure.
• Screw the protective conductor (PE) to the terminal clamp (9).
• Remove the protective caps from the terminal clamps (2T1, 4T2 and 6T3).
• Fit the cables with wire end ferrules.

AC main switch tightening torque [Nm]

PVM 450-068, 100 9

PVmaster Installation 31
 5.2 Installing PVM 450-068 and PVM 450-100

• Screw the L1 cable to the terminal clamp (2T1).

• Screw the L2 cable to the terminal clamp (4T2).
• Screw the L3 cable to the terminal clamp (6T3).
• Replace the protective caps.
• In the case of a TN S network, screw the neutral conductor (N) to the terminal
clamp (7) and remove the bridge (8).
• Fasten the cables to the clamping rail (Fig. 5.7, 17) to take the strain.

32 Installation PVmaster
 5.2 Installing PVM 450-068 and PVM 450-100

5.2.6 Auxiliary voltage supply

The PVmaster peripheral devices can be supplied via the generated voltage
(internal power supply) or via an auxiliary voltage supply (external power supply)
according to choice. The voltage supply is changed via the bridges (X5). The
auxiliary voltage is connected to the terminals (X5.1). The PVmaster is set at
internal power supply when delivered.

Powe
COM r
Data
Statu
s

Rese
t

RJ-45/Line

RS 232
1 0
OF
1
ON
F

N 0

1
PE
0
OFF
1
ON
4
7
0

2
5
8
3
6
9
N
N
N

10

Figure 5.11 Pin connections, AC auxiliary voltage

Legend
1 Terminal clamp L1 (X5.1/1)
N Terminal clamp for neutral conductor (X5.1/N)
PE Terminal clamp for protective earth conductor (X5.1/PE)
10 Bridges, change of voltage supply (X5)

Failure to comply may result in damage to the system!

Caution!
Fit a max. 16-amp fuse to protect the auxiliary voltage supply.

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

Note
The auxiliary voltage supply can only be connected to a TN S network (five-wire
system).

PVmaster Installation 33
 5.2 Installing PVM 450-068 and PVM 450-100

• Change over the bridge (Fig. 5.11, 10) on terminals 1 and 4 to terminals 4 and
7.
• Change over the bridge (Fig. 5.11, 10) on the N terminals accordingly.
• Identify the cable cross-section as dictated by local conditions. This depends
on cable protection, ambient temperature and installation method.
• Feed the AC cables through the cable opening (Fig. 5.7, 18) in the base of the
enclosure.

Z1 G1 L1 C1 T1 Z2 2Q2 VN

L1
=
L2
~ L3
N
PE
1 2 3 N
X5
4 5 6 N HS (X5.1)
4 7 16 A
1
1
4
7
2
1Q1 5
8
3
6 N N
9 N
N
N
N PE
PV

PP
X5

Figure 5.12 Block diagram for auxiliary voltage supply

Legend
PV Photovoltaic generator Z2 EMC filter
1Q1 DC main switch 2Q5 AC main switch
Z1 EMC filter VN Supply network
G1 Inverter HS Connection for auxiliary voltage (X5.1)
L1 Inductor X5 Bridges, change of voltage supply (X5)
C1 Capacitor PP Peripheral devices for PVmaster
T1 Transformer

• Screw the protective earth cable (PE) to the terminal clamp (Fig. 5.11, PE).
• Screw the L1 cable to the terminal clamp (Fig. 5.11, 1).
• In the case of a TN S network, screw the neutral conductor (N) to the terminal
clamp (Fig. 5.11, N) and remove the bridge.
• Fasten the cables to the clamping rail (Fig. 5.7, 17) to take the strain.

34 Installation PVmaster
 5.3 Installing external automatic disconnection device

5.3 Installing external automatic disconnection device

If an external automatic disconnection device is installed, the internal mains
monitoring device must be switched off. To do this, proceed as follows:

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

• Disconnect the PVmaster (Section 6.2, p. 42) and verify safe isolation from the
supply.
• Install the external disconnection device.
• Switch on the key-operated control voltage switch, e. g. PVM 450-033
(Fig. 5.1, 16).
• Switch on the AC main switch if using an internal power supply.
• Switch off the internal mains monitoring device:
• WebVisualization: Navigate to the menu: Mains monitoring and set the
Monitoring switch to Off.
• Touchscreen display: Navigate to the menu: Configuration > AC limit
values and set the Monitoring switch to Off.

Note
• Switch off the key-operated control voltage switch.

5.4 Start the communication module

Danger of electric shock from live subassemblies!
Up to three separately fused voltage supplies can be connected to the
Danger!
PVmaster.
• Before starting work, make sure that the plant is not live.

The SIM card can be blocked if it is used in an unconfigured communication

Caution! module.
• Configure the communication module first.

• Disconnect the PVmaster (Section 6.2, p. 42) and verify safe isolation from the
supply.
• Using an Ethernet cable, connect a PC to the communication module, e. g.
PVM 450-033 (Fig. 5.1, 13). Feed the cable through the
opening (Fig. 5.1, 1) in the base of the enclosure as the PVmaster must be
enclosed if using an internal control voltage supply.
• Switch on the key-operated control voltage switch (Fig. 5.1, 16).
• Switch on the AC main switch if using an internal power supply.
The communication module is configured at the factory with IP address
192.168.31.200. The IP address of the PC must be in the same range, e.g.
192.168.1.10. Deactivate any proxy server which may be configured in the
browser settings.
• Call up the following address in a browser: http://192.168.31.200.

PVmaster Installation 35
 5.4 Start the communication module

The configuration page Administration of the communication module appears.

• Enter the user name and password.

User name: insys
Password: gprs
• Set the connection data in the GSM/GPRS tab.

36 Installation PVmaster
 5.4 Start the communication module

The following data are required:

– WAN connection: Always on
– PIN: PIN of SIM card (if available)
– APN (AccessPointName):
– Simyo, E-Plus: internet.eplus.de
– Vodafone: web.vodafone.de
• Click on Save.
No settings are required in the NAT and DynDNS tabs.
• Switch off the PVmaster if using an internal power supply (Section 6.2, p. 42).
Switch off the key-operated control voltage switch and insert the SIM card.
• Switch the control voltage back on and establish a connection to the
communication module.
The performance and function can be checked in the Status tab:

Note
• Switch off the key-operated control voltage switch again.

PVmaster Installation 37
 5.5 Connecting power reduction and S0 interface of electricity meter

5.5 Connecting power reduction and S0 interface of electricity meter

The specifications for the WebVisualization user interface or the touchscreen dis-
play required for the configuration are covered in Section 6.3.2, p. 45 and Section
6.3.3, p. 51.

5.5.1 Connecting power reduction

Under the German Renewable Energy Law (EEG) operators of systems
exceeding 100 kilowatts are required to fit technical equipment or internal facilities
– for remote-controlled infeed reduction if the grid is overloaded and
– for current data on actual infeed
which the network operator can access.
• Connect the system operator's power reduction remote control unit as follows:

7A3 1
PWR

LOCK
CF

I1
I2 Powe
COM r
Data
Statu
s

I1 I2
Rese
t

RJ-45/Line

RS 232
+24 V +24 V

+24 V +24 V

I3 I4 I4
I3
0 1
OF ON
F

+
– 0
OF
1
ON
F

Figure 5.13 Connecting the power reduction unit

Legend
1 Ripple control receiver (e.g. with 4 relays)
I1 Relay 1
I2 Relay 2
I3 Relay 3
I4 Relay 4

• Configure the digital inputs.

– WebVisualization: Grid monitoring > Power reducer
– Touchscreen display: Status & values > DC values > Limitation > Power
reducer > Relay input (tool symbol)
• Switch the utility company output limitation on.
– WebVisualization: Grid monitoring > Power reducer > Enable
– Touchscreen display: Status & values > DC values > Limitation > Power
reducer > Enable

38 Installation PVmaster
 5.5 Connecting power reduction and S0 interface of electricity meter

5.5.2 Connecting S0 interface of electricity meter

• Connect the S0 interface of the electricity meter as follows.

7A2 PWR

LOCK
CF

Powe
COM r
Data
Statu
s

Rese
t

RJ-45/Line

RS 232
S0+ +24 V
S0–

I3

0 1
OF ON
F

+
– 0
OF
1
ON
F

Figure 5.14 Connecting the S0 interface

Legend
1 Meter of system operator

• Switch the S0 interface on and set the weighting of the electricity meter.
– WebVisualization: Yield > S0 interface > Enable S0/S0 gain
– Touchscreen display: Status & values > AC values > Yield > Yield
calculator (lock symbol) > S0 interface/gain

PVmaster Installation 39
 5.5 Connecting power reduction and S0 interface of electricity meter

40 Installation PVmaster
 6.1 Switching on the PVmaster

6 Operation

6.1 Switching on the PVmaster

Danger of electric shock from live subassemblies!
Danger!
The enclosure door must be closed during operation.

Figure 6.1 Switching on the PVmaster

Legend
1 AC main switch
2 DC main switch
3 Enable inverter

Proceed as follows to switch on the PVmaster:

• Turn the AC main switch (1) to position 1.
• Turn the DC main switch (2) to position 1.
• Turn the Enable inverter switch (3) to position 1.
The PVmaster is now switched on.

PVmaster Operation 41
 6.2 Switching off the PVmaster

6.2 Switching off the PVmaster

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
PVmaster:
Danger! 1 DC line - supply from the photovoltaic generator
2 AC line - supply to the electricity supply company grid
3 AC line - auxiliary voltage supply
• Before starting work, make sure that the plant is not live.

Danger of electric shock from live subassemblies!

The intermediate circuit of the inverter may still be live after the voltage has been
Danger! switched off.
• Wait five minutes until the voltage has dissipated and make sure the equipment
is no longer live.

Proceed as follows to switch off the PVmaster:

• Turn the Enable inverter switch (Fig. 6.1, 3) to position 0.
• Turn the DC main switch (Fig. 6.1, 2) to position 0. Wait until the power
indicator lamp has gone out.
• Turn the AC main switch (Fig. 6.1, 1) to position 0.
The PVmaster is now switched off.

Note
Always follow this procedure when switching off the equipment in order to prevent
unnecessary fault messages appearing on the PVmaster.

42 Operation PVmaster
 6.3 Operation indicator lamps

6.3 Operation indicator lamps

Depending on the model, the operating status (Section 6.3.1, p. 43) of the
PVmaster is indicated via an LED display or via status panels on the touchscreen
display.
You can also carry out the following actions via the integrated WebVisualization
user interface (Section 6.3.2, p. 45, PVmaster with LED display) or the
touchscreen display menu (Section 6.3.3, p. 51):
– Monitor the precise measurements and their trend over time on graphs
– View and change the operating parameters
– Read and acknowledge fault messages.

6.3.1 LED display

4
3
2
1
PV
mas
ter

Figure 6.2 LED display

Legend
1 Red LED
2 Blue LED
3 Yellow LED
4 Green LED

PVmaster Operation 43
 6.3 Operation indicator lamps

The operating state of the PVmaster is indicated via red, blue, yellow and green
LEDs. A detailed description of operation can be found in Section 7.
Off
– The PVmaster is switched off but not deenergised!

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
PVmaster:
Danger! 1 DC line - supply from the photovoltaic generator
2 AC line - supply to the electricity supply company grid
3 AC line - auxiliary voltage supply
• Disconnect the PVmaster before working on the system and verify safe
isolation from the supply.

Quiescent state
– The photovoltaic inverter only is switched on.
– The intermediate circuit of the inverter is supplied by the PV
generator.
– When the generator voltage on the intermediate circuit
exceeds a threshold value, the controller cuts in and the power
is measured.
Power measurement
– The controller measures the photovoltaic generator output (at
140-second intervals according to the factory setting)
– If the PV generator output exceeds the internal power
consumption of the PVmaster, the controller switches to
MPPT-regulated mode.
MPPT-regulated mode
– In MPPT-regulated mode, the maximum possible power is
taken from the PV generator and fed into the supply network.
Shut-down procedure
– The PV generator output drops below the internal power
consumption of the PVmaster and nothing is fed into the
supply network.
– The controller measures the PV generator output (three times
at 140-second intervals according to the factory setting).
– If the PV generator output power stays below the internal
power consumption of the PVmaster, the PVmaster switches
to quiescent state.
– If the PV generator output power exceeds the internal power
consumption of the PVmaster, the PVmaster switches to
MPPT-regulated mode.
Fault notification
– The PVmaster reports a fault.
– The fault can be acknowledged automatically or manually.
A detailed description of the fault messages can be found in
Section 9.

44 Operation PVmaster
 6.3 Operation indicator lamps

6.3.2 WebVisualization
The RJ45 socket allows operating states and PVmaster readouts to be displayed
locally on the PC.

Note
This is only possible if Java Runtime Environment 1.6.0.x (or higher) is installed.

1
1

Figure 6.3 RJ45 socket

Legend
1 RJ45 socket

• Using an Ethernet cable, connect a PC to the PVmaster.

• Call up the following address in a browser: http://192.168.31.240/TCWebvisu.
(The last number rises consecutively where systems are comprised of several
PVmasters mounted side by side)
The integrated WebVisualization user interface is displayed in the browser.
The operating state of the PVmaster units is displayed in fields under Status >
Local status. These are identical to the LED display and their meaning is
described in Section 6.3.1
A detailed description of operation can be found in Section 7.
You can also carry out the following actions via the menu:
– Monitor the precise measurements and their trend over time on graphs
– View and change the operating parameters
– Read and acknowledge fault messages.

Note
The parameters of the PVmaster are set at the factory for optimum operation in
standard conditions. Arbitrary changes to the parameters can result in lower
efficiency or automatic shutdown. The settings should only be changed by trained
and skilled personnel. The factory settings can be loaded by carrying out a reset
process (Section 9).
The menu is subdivided into three user levels:
0 Administrator, parameter adjustment by manufacturer, password required
1 Expert, parameter adjustment by operator, password required
2 Observer, parameter display

PVmaster Operation 45
 6.3 Operation indicator lamps

The menu has the following structure:

Designation Description
Status
Global status
Status word Tab. A.1
Error word Tab. A.2
Local status
Status word Tab. A.3
Error word Tab. A.4
Yield
Prognosis counter Tab. A.5
Daily yield
Monthly yield
Annual yield
User yield
Reset
System yield
CO2 saving
S0 interface Tab. A.6
Enable S0
S0 pulse
S0 gain
AC values
AC phase values Tab. A.7
Phase L1 ... L3
Veff
Ieff
f
Pac
cosPhi
AC total/average values Tab. A.8
Veff
Ieff
f
Pac
cosPhi
Daily max. power
DC values
DC values Tab. A.9
Vg0
Vdc_act
Idc_act
Pdc_act
Pdc limit active
Vdc_ref
Pdc_max
Active limit
Temperature
Temperatures Tab. A.10
Filter choke
PSU interior
PSU heatsink
Transformer
Cabinet fan (user level 1)
DC power derating Tab. A.11
Derating active
Level 1, 2
Temp. Configuration (user level 1)
Cabinet fan Tab. A.12
Switch-on threshold
Hysteresis
Derating parameters Tab. A.13
Level 1, 2,
Overtemperature values
Derating factors
Table 6.1 TWebVisualization menu structure

46 Operation PVmaster
 6.3 Operation indicator lamps

Designation Description
Grid monitoring
Test OP Tab. A.14
Enable Tab. A.14
AC limit values Tab. A.15
System voltage Veff
System frequency fN
Power Reducer Tab. A.16
Enable
reducer active
Active limit
Analogue input
Analogue input
Pdc limit
Data logger
FTP client status Tab. A.17
Run
Busy
Load OK
Error
Data logger for online portal Tab. A.18
Data cycle time
File creation/upload
Daily
or after X min
„Meter“ file
FTP client Tab. A.19
FTP client status
RUN
Busy
Load OK
Error
Err.-Message
Target server
Server name
Server path
Upload requests (data files)
Upload requests (info files)
Test upload (user level 1)
Reset (user level 1)
Errors
Active errors Tab. A.20
Error PSU: ID/Loc
BUS Watchdog
Insulation fault
Overvoltage
System frequency error
External error
Overtemp.: Transformer
Overtemp.: Filter choke
Overtemp.: PSU interior
Overtemp.: PSU heatsink
Unacknowledged error state Tab. A.20
Manual reset
Automatic reset Tab. A.22
Num. of attempts
Automatic reset not possible
Active errors Tab. A.23
System voltage error: L1, L2, L3
Parameters Tab. A.24
Auto reset delay
Reset timer „attempts“
Acknowledgement attempts
Table 6.1 TWebVisualization menu structure

PVmaster Operation 47
 6.3 Operation indicator lamps

Designation Description
Parameters
Modell Tab. A.25
Serial number (PVmaster unit)
Serial number Tab. A.26
Software Rev.
UTC-Offset
Language
User level
Table 6.1 TWebVisualization menu structure

Navigating through the menu

Example: Displaying current AC values.
Click on the relvant button to navigate through the menus. Click on Back to revert
to previous menu.
• Click on AC values.
The current AC values will be displayed.

48 Operation PVmaster
 6.3 Operation indicator lamps

Changing parameters
Example: Switching on the enclosure fan manually
• Click on Parameters.
The parameters will be displayed.

• Click on User level > Change.

The following dialogue box will appear.

The menu is subdivided into three user levels:

0 Administrator, parameter adjustment by manufacturer, password required
1 Expert, parameter adjustment by operator, password required
2 Observer, parameter display
• Select User level 1 and enter the password.
You are only authorised to change certain parameters.

Note
Please note that the password is case-sensitive.

PVmaster Operation 49
 6.3 Operation indicator lamps

• Click on Temperature > Cabinet fan > On.

The enclosure fan will be switched on and the On indicator will light up.

50 Operation PVmaster
 6.3 Operation indicator lamps

6.3.3 Touchscreen display

The operating state of the PVmaster is indicated via a touchscreen display
(Fig. 6.4, 1). The status fields (3) in the display provide a rapid overview of the
operating state. These are identical to the LED display and their meaning is
described in Section 6.3.1.
A detailed description of operation can be found in Section 7.
You can also carry out the following actions via the menu on the display:
– Monitor the precise measurements and their trend over time on graphs
– View and change the operating parameters
– Read and acknowledge fault messages.

Figure 6.4 Touchscreen display

Legend
1 Touchscreen
2 Buttons
3 Operating state coloured boxes (red, blue, yellow, green)

Note
The parameters of the PVmaster are set at the factory for optimum operation in
standard conditions. Arbitrary changes to the parameters can result in lower
efficiency or automatic shutdown. The settings should only be changed by trained
and skilled personnel. The factory settings can be loaded by carrying out a reset
process (Section 9).

The menu is subdivided into three user levels:

0 Parameter display
1 Parameter adjustment by the operator, password required
2 Parameter adjustment by the manufacturer, password required

PVmaster Operation 51
 6.3 Operation indicator lamps

The menu has the following structure:

Designation Description
Status & Values (user level 0)
DC values Tab. A.27
Generator voltage Vdc > graph
Generator current Idc > graph
Generator power Pdc > graph
Daily curve > graph
Limitation Tab. A.28
Actual „power reducer“ limit
Temperature depend. derating
Active limit
Power reducer Tab. A.29
Enable
Dig. input 1 to 4
Reducer active
Temp. dep. derating Tab. A.33
AC values Tab. A.30
Phase voltage Vac > graph
Phase current Iac > graph
Active power Pac > graph
System frequency f
Power factor cos ϕ
Yield Tab. A.31
Daily yield
Monthly yield
Annual yield
System yield
Configuration (user level 1) Tab. A.31
(user level 2)
New value
Correction factor
Daily yield
Monthly yield
Annual yield
System yield
S0 interface (user level 1) Tab. A.31
S0 interface
S0 pulse
Gain
CO2 savings Tab. A.31
Daily maximum
User yield
Reset
Temperature Tab. A.32
Control cabinet Transformer > graph
Control cabinet Filter choke > graph
Inverter Interior > graph
Inverter Heatsink > graph
Derating, temperature-dependent Tab. A.33
„Derating“ active
Level 1
Level 2
Actual „Derating“
Configuration (user level 2) Tab. A.33
Status inverter Tab. A.34
Status word
Control word
Table 6.2 Touchscreen display menu structure

52 Operation PVmaster
 6.3 Operation indicator lamps

Designation Description
Configuration (user level 0)
Panel Tab. A.35
System language
Time zone
AC limit values Tab. A.36
Voltage Veff
Frequency f
Monitoring
E.ON-Check
Automatic acknowledgement Tab. A.37
Acknowledgement attempts
Acknowledgement not possible
ErrResetDelay
NoErrTime
No. of trials
Pdc limitation Tab. A.38
Max. DC power
Limit active
Data logger
Configuration Tab. A.39
Logger cycle time
File upload
FTP client Tab. A.40
Client ready
Client active
Upload okay
Error
Reset
Test upload
Server (user level 2) Tab. A.41
Login (user level 2) Tab. A.41
Factory settings Tab. A.42
Set parameter values to default
Set energy values to default
Delete trend data
AC measurement (user level 2) Tab. A.43
DC measurement (user level 2) Tab. A.43
Start-up procedure (user level 2) Tab. A.43
MPP-Tracking (user level 2) Tab. A.43
Shut-down procedure (user level 2) Tab. A.43
Fan control (user level 1) Tab. A.44
Start-up threshold inverter interior
Start-up threshold inverter heatsink
Start-up threshold transformer
Start-up threshold filter choke
Hysteresis inverter interior
Hysterese inverter heatsink
Hysterese transformer
Hysterese filter choke
Operation
Auto/On
Temperature cut-out (user level 2) Tab. A.45
Manual control (user level 2) Tab. A.45
Diagnosis Tab. A.46
Info
Serial number
Modell/type
Software rev.
Table 6.2 Touchscreen display menu structure

PVmaster Operation 53
 6.3 Operation indicator lamps

Navigating through the menu

Example: Displaying the generator output graph.
To navigate through the menus, use one finger to touch the relevant
button. Click on Up to revert to the previous menu.
• Touch Status & values in the main menu.
• Touch DC values.
The current DC values will appear.

• Touch the
Graph button to the right of the
generator output (Pg).
The generator output graph will appear.

Changing parameters
Example: Setting the time zone
• Navigate to the menu: Configuration >
Terminal > Terminal [2] (next).

All the parameters which can be changed

have a raised frame: .
• Touch UTC offset.
UTC: Coordinated Universal Time
The input box will appear.
• Enter the difference from universal time
(e.g. 1 for Germany).
• Touch Enter to confirm.
• Use the ESC button to cancel the
entry.

54 Operation PVmaster
 6.3 Operation indicator lamps

Entering the password

Example: Switching on the fan manually.
• Navigate to the menu: Configuration >
Configuration [2] (next) > Configuration
[3] (next).
• Touch Fan control.
The password entry box will appear.
• Enter the password and confirm the entry
by touching Enter .
Use the ESC button to cancel the entry.
You can delete the entry using the
Backspace button.

Note
Please note that the password is case-
sensitive. You can change this using the
and buttons.
If no operations are carried out for one
minute, the display will revert to the lowest
user level.
• Touch the Auto/On button.
The On indicator lamp will light up if the fans
are on.

PVmaster Operation 55
 6.4 Testing the internal automatic disconnection device

6.4 Testing the internal automatic disconnection device

• Switch off the PVmaster.

• Disconnect the PVmaster from the power supply.
• Unscrew bridges X4/2 to 8 of the AC lines.
• Connect the test prods to contacts X4/2 L1, X4/4 L2, X4/6 L3 and X4/8 N.
• Connect the test prods with contacts X2/5 and X2/6 to the main contact of the
line contactor.
• Switch on the key-operated control voltage switch, e. g. PVM 450-033
(Fig. 5.1, 16).
• Switch on the AC main switch.
PVmaster with LED display and
WebVisualization:
• Navigate to the menu: Grid monitoring.
• Click on Test OP check.

PVmaster with touchscreen display:

• Navigate to the menu: Configuration >
AC limit values.
• Touch E.ON check.
• Touch Yes to confirm the pop-up menu.

The E.ON check (On) is switched on.

• Carry out the test.
• Restore the original condition after the
test.

56 Operation PVmaster
 6.5 Copying files from the compact flash card

6.5 Copying files from the compact flash card

The files can be copied from the compact flash card (type I and II).

PW
R

LO
CK
CF

Figure 6.5 Compact flash card

• Switch off the PVmaster (Section 6.2).

• Remove the compact flash card from the data logger,
e.g. PVM 450-033 (Fig. 5.1, 11).
• Copy the files to your computer.

Note
The compact flash card folder structure must be retained.

• Plug the compact flash card into the data logger.

• Switch on the PVmaster again (Section 6.1).

Note
The online monitoring portal can only be accessed with the memory card plugged
in.

PVmaster Operation 57
 6.5 Copying files from the compact flash card

58 Operation PVmaster
 7.1 Block schematic diagram

7 Description of operation

7.1 Block schematic diagram

G1 L1 C1 T1 Z2 K1 2Q5 VN

S1
Z1
P4 C°
P1 P3 C°

I DC

H2
Ω
P2 iL1 iL2 iL3
H1 uL1
uL2
uL3

1Q1
GE

PV

Figure 7.1 Block schematic diagram for PVmaster peripheral devices

Legend
PV Photovoltaic generator T1 Transformer
1Q1 DC main switch Z2 EMC filter
H1 Overvoltage protection device K1 Load contactor
H2 Insulation monitor (optional) 2Q5 AC main switch
P1 Current transformer VN Supply network
Z1 EMC filter P2 Measurement device
S1 Controller P3 Temperature sensor
G1 Inverter P4 Temperature sensor
L1 Inductor GE Communication module
C1 Capacitor

The photovoltaic generator is connected to the supply via the DC main switch
(1Q1). The insulation monitor (H2), overvoltage protection device (H1), current
transformer (P1) and EMC filter (Z1) are arranged between the DC main switch
and the inverter (G1).
Earthing is required with certain PV generator module types:
– Negative grounding: thin-film modules
– Positive grounding: modules with rear contact cells
The earthing is done internally on PVmasters using isolation transformers.
The insulation monitor (H2) monitors the DC-side IT system. If the insulation
resistance falls below the set value, the controller (S1) interrupts the operation of
the PVmaster and sends an alarm signal. The overvoltage protection device (H1)
limits high induced overvoltages which can arise from lightning, switching
operations and atmospheric disturbances. If a unit is defective, this is signalled to
the controller via an internal contactor in the overvoltage protection device. This
does not affect the operation of the PVmaster. The EMC filter (Z1) prevents any
interference from the inverter on the DC side.
All the operations of the PVmaster are regulated and controlled via the internal
controller (S1). The parameters of the controller, as explained in Section A, are
freely configurable. Logbook data from the controller can be transmitted via the

PVmaster Description of operation 59

 7.2 Procedure for switching on and off

modem via cable or wirelessly, as required.

The inverter (G1) is connected to the supply network of the electricity supplier via
the sine filter, which consists of the inductor (L1), capacitor (C1), transformer (T1)
and EMC filter (Z2).
The sine filter forms a sinusoidal wave from the cycled output current of the
inverter. The EMC filter (Z2) ensures compliance with the EMC supply
regulations. The network can be energised via the load contactor (K1) switched
by the controller (S1) and the AC main switch (2Q5). The load contactor (K1) is
switched by the controller when the energy demand of the PVmaster is covered
by the photovoltaic generator. The measurement device (P2) measures all the
relevant supply and network parameters, such as current, power and frequency.

7.2 Procedure for switching on and off

PVmaster
OFF

V DC V DC
> 400V < 250V

Controller
ON
Power measurement
3 x unsuccessful
Parameter: Vdc_start Parameter: Vdc_min Parameter: Cycles

Power
measurement

Parameter: Vdc_start

Output power
MPPT measurement again /
mode Line contactor
remains closed

PAC ≤ 0W
Parameter: Tab_delay

Shut-down
procedure

Figure 7.2 Procedure for switching on and off

60 Description of operation PVmaster

 7.2 Procedure for switching on and off

The PVmaster comes out of its quiescent state when the voltage of the
photovoltaic generator exceeds 400 V. The internal power supply unit starts
oscillating and the controller powers up. If the generator voltage exceeds
Vdc_min, the performance test is carried out. If the performance test is
unsuccessful, it is repeated after 140 seconds. If the measurement is successful,
the regulator is activated and MPPT-regulated mode is started. If the generator
power falls to zero watts or if power is absorbed by the PVmaster, the latter starts
the shut-down procedure. The shut-down procedure contains three power
measurements, 140 seconds apart. During this time, the line contactor remains
closed. If these three measurements are unsuccessful, the line contactor isolates
the PVmaster from the supply network and the regulator is deactivated. If the
generator voltage falls below 250 V, the internal power supply unit cuts out and
the PVmaster switches off.

PVmaster Description of operation 61

 7.2 Procedure for switching on and off

62 Description of operation PVmaster

8 Inspection

The inspection may only be carried out by the operator or by a person authorised
Caution!
by the operator.

If there is a defect, the plant must not be put into operation again. Arrangements
Caution!
should be made to have the PVmaster checked by a specialist company.

Danger of electric shock from live subassemblies!

Before working on the plant, carry out the following steps:
• Disconnect the plant.
Danger! • Take measures to prevent the plant from being switched on again.
• Make sure that the plant is not live.
• Earth the subassemblies and short-circuit them.
• Cover or encase in a safety cage any neighbouring subassemblies which are
still live.

Danger of electric shock from live subassemblies!

Up to three separately fused voltage supplies can be connected to the
PVmaster:
1 DC line - supply from the photovoltaic generator
Danger! 2 AC line - supply to the electricity supply company grid
3 AC line - auxiliary voltage supply
• Remove the bridge (X2) to prevent the main line contactor from closing
unintentionally.
• Before starting work, make sure that the plant is not live.

Danger of electric shock from live subassemblies!

The intermediate circuit of the inverter may still be live after the voltage has been
Danger! switched off.
• Wait five minutes until the voltage has dissipated and make sure the equipment
is no longer live.

Danger of electric shock from live subassemblies!

Danger! Photovoltaic modules are energised as soon as they are exposed to daylight.
• Take the necessary measures to verify safe isolation from supply.

PVmaster Inspection 63
 Carry out a visual and mechanical inspection every month in order to prevent
interruptions caused by faults:
• Check the operation of the fan by starting it manually (Table A.44, 9).
• Switch off the PVmaster (Section 6).
• Check the enclosure, the components and the fuses for any signs of
discolouring or damage. Discolouration of components indicates damage due
to overheating or corrosion and means that the components must be replaced.
• Check the filter in the air supply opening (Fig. 2.2, 8).
Clean or change the filter if it is heavily soiled (accessories, Rittal GmbH & Co.
KG).
Carry out a mechanical inspection every six months in order to prevent
interruptions caused by faults.
• Switch off the PVmaster (Section 6).
• Disconnect the DC line from the photovoltaic generator.
• Disconnect the AC line from the supply network.
• Disconnect the AC line from the auxiliary supply.
• Make sure that the plant is not live.
• Check the threaded cable connections to make sure that they are firmly
seated. Thermal stresses can cause screwed connections to work loose over
time. Retighten the threaded connections where necessary.

64 Inspection PVmaster
 9.1 Description of fault

9 Troubleshooting

9.1 Description of fault

If a fault occurs during operation, this will be indicated on the display under
Diagnosis or by the red LED flashing. This can be acknowledged automatically or
manually, depending on the type of fault. Automatic acknowledgement will take
place until the maximum number of acknowledgements has been reached.

Acknow-
Fault Possible cause Remedy
ledgement
Inverter fault - Please contact the Automatic
LTi helpline.
Bus Watchdog fault Fault in internal bus system Please contact the Automatic
LTi helpline.
Overvoltage (lightning protection) Overvoltage protection is defective. Replace the defective protection Automatic
module (DEHNguard T440).
Insulation fault Insulation resistance has dropped Check the insulation resistance Manual
below the critical value. The of the PV generator.
PVmaster shuts down.
Overheating The transformer has overheated. Provide sufficient heat Manual
Transformer discharge facilities.
Overheating The filter inductor has overheated. Provide sufficient heat Manual
Filter inductor discharge facilities.
Inverter interior overheating The inverter has overheated. Provide sufficient heat Manual
discharge facilities.
Inverter heat sink overheating The heat sink has overheated. Provide sufficient heat Manual
discharge facilities.
Unacceptable voltage L1 ... L3 The supply voltage is outside the If the fault persists please Automatic
limits. contact your network provider.
Unacceptable frequency The line frequency is outside the If the fault persists please Automatic
limits. contact your network provider.
Table 9.1 Fault messages

PVmaster Troubleshooting 65
 9.2 Resetting faults

9.2 Resetting faults

9.2.1 WebVisualization
The faults can be reset manually on the touchscreen display as follows:
• Go to Diagnosis in the menu.
• Remedy the fault indicated.
• Acknowledge the fault message by touching Manual acknowledgement.

9.2.2 Touchscreen display

The faults can be reset manually on the touchscreen display as follows:
• Go to Diagnosis in the menu.
• Remedy the fault indicated.

• Acknowledge the fault message by touching OK .

• Use the Down and Up buttons to scroll through a list.

You can leave the menu by using the Escape button.

The faults can be acknowledged and the list deleted by touching Delete (user
level 2).

You can hide or show the time stamps for the faults using the Clock button.

9.3 Carrying out a reset

Caution! Do not carry out a reset without consulting your project engineer.

The factory settings can be loaded on the touchscreen display as follows:

• In the menu, go to Configuration > Configuration [2] (next) > Factory settings.
• Touch Yes in response to each question.
If you want to abort the reset process, touch Back.

66 Troubleshooting PVmaster
 9.4 LTi helpline

9.4 LTi helpline

If you have any technical queries on project engineering or about starting up the
PVmaster or if you need further support during servicing, please contact the LTi
helpline.

Germany France
LTi DRiVES GmbH LTi DRiVES GmbH
Heinrich-Hertz-Str. 18 260 Rue Denis Papin
59423 Unna 54710 Ludres
Tel.: +49-23-03 7 79 - 0 Tel.: +33-383 26 40 99
Fax: +49-23-03 7 79 - 3 97 Fax: +33-383-26 79 23
pvmaster@lt-i.com Info-fr@lust-tec.com
www.lt-i.com www.lt-i.com

Italy Spain
LTi ITALiA srl SAIN AUTOMATIZACIÓN SOLUTIONS, S. L.
via F. lli Rosselli 3/29 Carretera N-151, de Girona-Anglès, km 106
20019 Settimo Milanese (MI) 17163 Vilana-Bescanó (Girona)
Tel.: +39-0-2-33 51 48 96 Tel.: +34-972 100 619
Fax: +39-0-2-33 54 98 76 Fax: +34-972 442 317
info.italia@lt-i.com info@sainsl.com
www.lt-i.it www.sainsl.com

Switzerland
LTi DRiVES GmbH
Rte. des Arsenaux 41
1705 Fribourg
Tel.: +41-(0)-44 440 66 60
Fax: +41-(0)-26 422 14 88
Technoparkstraße 1
8005 Zürich
Tel.: +41-(0)-44 440 66 60
Fax: +41-(0)-26 422 14 88
info@lt-i.ch
www.lt-i.ch

PVmaster Troubleshooting 67
 9.4 LTi helpline

68 Troubleshooting PVmaster
 A.1 Description of WebVisualization parameters

A Appendix

A.1 Description of WebVisualization parameters

The parameters of the PVmaster can be set via the integrated WebVisualization
user interface.

Note
The parameters of the PVmaster are set at the factory for optimum operation in
standard conditions. Arbitrary changes to the parameters can result in lower
efficiency or automatic shutdown. The settings should only be changed by trained
and skilled personnel. The factory settings can be loaded by carrying out a reset
process (Section 9, p. 65).
The following paramaters can be viewed via the menu (user level 2):
No. Designation Description
Status word -
0 PLC ready -
1 Parameter changed -
2 Default values -
3 Error list deleted -
4 Energy values cleared -
5 Trend data deleted -
6 Power reduction relay 1 -
7 Power reduction relay 2 -
8 Power reduction relay 3 -
9 Power reduction relay 4 -
10 - Reserve - -
11 - Reserve - -
12 - Reserve - -
13 - Reserve - -
14 - Reserve - -
15 - Reserve - -
Table A.1 Status > global status, status word

No. Designation Description

Error word -
0 System voltage error: L1 The supply voltage is outside the limits.
1 System voltage error: L2
2 System voltage error: L3
3 - Reserve - -
4 - Reserve - -
5 - Reserve - -
6 - Reserve - -
7 - Reserve - -
8 - Reserve - -
9 - Reserve - -
10 - Reserve - -
11 - Reserve - -
12 - Reserve - -
13 - Reserve - -
14 - Reserve - -
15 - Reserve - -
Table A.2 Status > global status, error word

PVmaster Appendix 69
 A.1 Description of WebVisualization parameters

No. Designation Description

Status word -
0 AC main switch -
1 Completly enabled -
2 Start-up procedure -
3 AC main contactor -
4 MPPT operation -
5 Cabinet fan -
6 Shut-down procedure -
7 Derating level 1 -
8 Derating level 2 -
9 Acknowledgement -
10 - Reserve - -
11 - Reserve - -
12 - Reserve - -
13 - Reserve - -
14 - Reserve - -
15 - Reserve - -
Table A.3 Status > local status, status word

No. Designation Description

Error word -
0 BUS Watchdog Watchdog evaluation of bus communication
1 System frequency error The line frequency is outside the limits.
2 Overtemp.: Transformer -
3 Overtemp.: Filter choke -
4 Overtemp.: PSU interior -
5 Overtemp.: PSU heat sink -
6 Overvoltage -
7 Insulation fault -
8 Error PSU -
9 - Reserve - -
10 - Reserve - -
11 - Reserve - -
12 - Reserve - -
13 - Reserve - -
14 - Reserve - -
15 - Reserve - -
Table A.4 Status > local status, error word

No. Designation Unit Description

1 Daily yield kWh Current day's yield
2 Monthly yield kWh Current month's yield
3 Annual yield kWh Current year's yield
4 User yield kWh Yield in a specific time period
5 Reset - Reset user yield
6 System yield MWh Total system yield
7 CO2 savings kg CO2 saving related to system yield
Table A.5 Yield > prognosis counter

No. Designation Description

1 Enable S0 User level 1: S0 interface on/off
2 S0 pulse Electricity meter pulse
3 S0 gain Number of pulses per kilowatt hour counted by electricity meter.
Table A.6 Yield > S0 interface

70 Appendix PVmaster
 A.1 Description of WebVisualization parameters

No. Designation Unit Description

1 Veff V Phase voltage
2 Ieff A Phase current
3 f Hz Line frequency
4 Pac kW Effective power
5 cosPhi - Power factor
Table A.7 AC values > AC phase values, phase L1 to L3

No. Designation Unit Description

1 Veff V Phase voltage mean value
2 Ieff A Phase current mean value
3 f Hz Line frequency mean value
4 Pac kW Effective power total
5 cosPhi - Power factor mean value
6 Daily max. power kW Maximum effective power over course of day
Table A.8 AC values > AC total/average values

No. Designation Unit Description

1 Vg0 V Open-circuit voltage last measured on generator
2 Vdc_act V Present generator voltage
3 Idc_act A Present generator current
4 Pdc_act kW Present generator output
5 Pdc limit active Output limitation active
6 Vdc_ref V Generator voltage setpoint on inverter
7 Pdc_max kW Maximum output setpoint
8 Active limit % Percentage limitation of output
Table A.9 DC values > DC values

No. Designation Unit Description

1 Filter choke °C Present temperature of filter choke
2 PSU interior °C Present temperature inside inverter
3 PSU heatsink °C Present heat sink temperature of inverter
4 Transformer °C Present temperature of transformer
5 Cabinet fan - Manual switching on/off of enclosure fan
Table A.10 Temperature > temperatures

No. Designation Description

1 Derating active Output limitation active due to raised temperatures
2 Level 1, 2 Level 1, 2 output limitation active
Table A.11 Temperature > DC power derating

No. Designation Unit Description

1 Switch-on threshold °C The enclosure fan cuts in at this level.
2 Hysteresis °C The enclosure fan cuts out at this level.
Table A.12 Temperature > temp. configuration > cabinet fan

No. Designation Unit Description

1 Level 1, 2 °C A derating process takes place at these temperatures.
2 Overtemp. values °C The PVmaster cuts out at this level.
3 Derating factors % Power reduction to xy % of Pn.
Table A.13 Temperature > temp. configurationn > derating parameters

PVmaster Appendix 71
 A.1 Description of WebVisualization parameters

No. Designation Description

1 Test OP Testing the automatic disconnection device.
2 Enable Activating/deactivating internal mains monitoring.
If a separate mains monitoring system is used, e.g. ENS31 supplied by UfE
GmbH, the internal monitoring unit can be switched off.
Table A.14 Grid monitoring > Test OP

No. Designation Unit Description

1 System voltage V The supply voltage is outside the limits.
2 System frequency Hz The line frequency is outside the limits.
Table A.15 Grid monitoring > AC limit values

No. Designation Unit Description

1 Enable - Activate output limitation imposed by energy supply company
2 reducer active - Output limitation active
3 Active limit % Percentage limitation of output
4 Analogue input Evaluation of analogue input on/off.
5 Pdc limit % As an alternative to the four relay inputs, the effective power
limitation can also be specified via an analogue interface (4-
20mA). This involves setting the parameters for the Pdc limit
for 4 and 20mA.
Table A.16 Gridmonitoring > power reducer

No. Designation Description

1 Run FTP client active
2 Busy File being uploaded to online portal
3 Load OK File successfully uploaded to online portal
4 Error File failed to upload to online portal
Table A.17 Data logger > FTP client status

No. Designation Unit Description

1 Data cycle time min Cycle time of data acquisition
2 File creation/upload The logger file can be uploaded daily or every x minutes.
3 "Meter" file Measured data
Table A.18 Data logger > Data logger for online portal

No. Designation Description

1 Run FTP client active
2 Busy File being uploaded to online portal
3 Load OK File successfully uploaded to online portal
4 Error File failed to upload to online portal
5 Error message Fault message
6 Server name -
7 Server path -
8 Upload requests (data files) List of data files still being uploaded
9 Upload requests (info files) List of information files still being uploaded
10 Test upload User level 1: Test file upload
11 Reset User level 1: Reset
Table A.19 Data logger > FTP client

No. Designation Description

1 Error PSU Inverter fault number and fault location
2 BUS Watchdog Watchdog evaluation of bus communication
3 Insulation fault -
4 Overvoltage -
5 System frequency error The line frequency is outside the limits.
Table A.20 Errors > active errors

72 Appendix PVmaster
 A.1 Description of WebVisualization parameters

No. Designation Description

6 External error -
7 Overtemp.: Transformer -
8 Overtemp.: Filter choke -
9 Overtemp.: PSU interior -
10 Overtemp.: PSU heatsink -
11 Unacknowledged error state -
12 Manual reset Button for manual acknowledgement of unacknowledged faults
Table A.20 Errors > active errors

No. Designation Description

1 BUS error Inverter internal fault
2 Overcurrent
3 I2t error
4 DC undervoltage
5 DC overvoltage
6 DC voltage variation
7 Overtemperature: PTC
8 Overtemperature: Heatsink
9 Overtemperature: Interior
10 System frequency error
11 System voltage error
12 Synchronization error
13 Decoding complete Decoding of fault number/location in text form
Table A.21 Errors > active errors > i

No. Designation Description

1 Num. of attempts Number of acknowledgement attempts
2 Automatic reset not Once the maximum number of acknowledgement attempts has been reached,
possible no further automatic acknowledgements are possible.
Table A.22 Errors > automatic reset

No. Designation Description

1 System voltage error L1 The supply voltage is outside the limits.
to L3
Table A.23 Errors > active errors

No. Designation Description

1 Auto reset delay If the PVmaster is in error status, the cause must be inactive for at least this
amount of time so that the fault can be automatically acknowledged.
2 Reset timer "attempts" After an automatic reset, the fault must not occur for the amount of time set
here otherwise the counter will increment for the acknowledgement attempts.
3 Acknowledgement Maximum number of acknowledgement attempts to be carried out
attempts
Table A.24 Errors > parameters

No. Designation Description

1 Model -
2 Serial number -
Table A.25 Parameters > PVmaster unit

PVmaster Appendix 73
 A.1 Description of WebVisualization parameters

No. Designation Description

1 Serial number -
2 Software rev. -
3 UTC offset Entry of difference from universal time
(UTC: Coordinated Universal Time)
(e.g. 0 for Great Britain, 1 for Germany, Spain,
France, Italy).
4 Language Menu languages: German, English, Spanish, French,
Italian
5 User level User levels:
0: Administrator, parameter adjustment by manufacturer
1: Expert, parameter adjustment by operator
2: Observer, parameter display
Table A.26 Parameters

74 Appendix PVmaster
 A.2 Description of touchscreen display parameters

A.2 Description of touchscreen display parameters

The parameters of the PVmaster can be set via the touchscreen display.

Note
The parameters of the PVmaster are set at the factory for optimum operation in
standard conditions. Arbitrary changes to the parameters can result in lower
efficiency or automatic shutdown. The settings should only be changed by trained
and skilled personnel. The factory settings can be loaded by carrying out a reset
process (Section 9, p. 65).
The following paramaters can be viewed via the menu (user level 0):
No. Designation Unit Description
1 Vdc V Present generator voltage
2 Idc A Present generator current
3 Pdc kW Present generator output
4 Daily curve Generator output as daily trend graph
Table A.27 Status & values > DC values

No. Designation Unit Description

1 Actual „power reducer“ % Actual „power reducer“ limit imposed by energy supply com-
limit pany
2 Temperature depend. % Actual temperature dependent derating
derating
3 Active limit % Total derating
Tabelle A.28 Status & values > DC values > Limitation

No. Designation Unit Description

1 Enable Boolean Activate output limitation imposed by energy supply company
2 Dig. input 1 to 4 Boolean Digital input 1 to 4
3 Reducer active % Reducer active
Tabelle A.29 Status & values > DC values > Limitation > Power reducer

No. Designation Unit Description

1 Vac V Phase voltage
2 Iac A Phase current
3 Pac kW Effective power
4 System frequency f Hz Line frequency
5 Power factor cos ϕ - Power factor cos ϕ
Table A.30 Status & values > AC values

No. Designation Unit Description

1 Daily yield kWh Current day's yield
2 Monthly yield kWh Current month's yield
3 Annual yield kWh Current year's yield
4 System yield MWh Total system yield
5 Configuration - User level 1
6 New value User level 2
7 Correction factor
8 Daily-, Monthly,-
Annual-, System yield
12 S0 interface User level 1:
S0 interface on/off
13 S0 pulse Electricity meter pulse
14 Gain Number of pulses per kilowatt hour counted by electricity
meter.
Table A.31 Status & values > AC values > yield

PVmaster Appendix 75
 A.2 Description of touchscreen display parameters

No. Designation Unit Description

15 CO2 savings kg CO2 saving related to system yield
16 Daily maximum kW Maximum output over course of day
17 User yield kWh Yield in a specific time period
18 Reset - Reset user yield
Table A.31 Status & values > AC values > yield

No. Designation Unit Description

1 Transformer enclosure °C Present temperature of transformer
2 Filter choke enclosure °C Present temperature of filter choke
3 Inverter interior °C Present temperature inside inverter
4 Inverter heatsink °C Present heat sink temperature of inverter
Table A.32 Status & values > temperature

No. Designation Unit Description

1 Derating active Boolean Output limitation active due to raised temperatures
2 Level 1 Boolean Level 1 output limitation active
3 Level 2 Boolean Level 2 output limitation active
4 Actual derating % Present output limitation related to rated power
5 Configuration - User level 2
Table A.33 Status & values > temperature > derating, temperature-dependent

Internal parameters of inverter for diagnostics and service.

No. Designation Description
Status word
1 ERROR Fault notification
2 REFR Generator voltage setpoint reached
3 HEARTBEAT Watchdog evaluation of bus communication
4 ACTIVE Regulator active
5 BCON Status of chopper branch
6 C_RDY Regulator ready
7 ENPO Hardware enable
8 OSD00 Status of digital output 0
9 OSD01 Status of digital output 1
10 OSD02 Status of digital output 2
11 OSD03 Status of digital output 3
12 ISD00 Status of digital input 0
13 ISD01 Status of digital input 1
14 ISD02 Status of digital input 2
15 ISD03 Status of digital input 3
16 ISD04 Status of digital input 4
Control word
17 ERES Acknowledgement of waiting fault messages
18 START Regulator enable
19 BCON Chopper branch active
20 HEARTBEAT Watchdog evaluation of bus communication
21 OSD03 Status of digital output 3
22 OSD02 Status of digital output 2
23 OSD01 Status of digital output 1
24 OSD00 Status of digital output 0
Table A.34 Status & values > satus inverter

76 Appendix PVmaster
 A.2 Description of touchscreen display parameters

No. Designation Unit Value range Default Description

1 System language - German, German Menu language
English,
Spanish,
French,
Italian
2 Time zone Hours -12...+12 0 Entry of difference from universal time
(UTC: Coordinated Universal Time)
(e.g. 0 for Great Britain, 1 for Germany, Spain, France, Italy).
Table A.35 Configuration > panel

No. Designation Unit Value range Default Description

1 Voltage Veff_min V 170-240 184 Minimum value for phase voltage. Falling below this value will
trigger the shutdown process.
2 Voltage Veff_max V 240-300 264,5 Minimum value for phase voltage. Exceeding this value will trigger
the shutdown process.
3 Frequency fmin Hz 45-50 47,5 Minimum value for line frequency. Falling below this value will
trigger the shutdown process.
4 Frequency fmax Hz 50-55 50,4 Maximum value for line frequency. Exceeding this value will trigger
the shutdown process.
5 Monitoring Boolean On/Off Deactivating the internal mains monitoring unit.
If a separate mains monitoring system is used, e. g. ENS31
supplied by UfE GmbH, the internal monitoring unit can be
switched off.
6 E.ON check Boolean On/Off Testing the automatic disconnection device.
Table A.36 Configuration > AC limit values

No. Designation Unit Value range Default Description

1 Acknowledgement Num - - Number of acknowledgement attempts
attempts
2 Acknowledgement Boolean TRUE/FALSE FALSE Once the maximum number of acknowledgement attempts has
not possible been reached, no further automatic acknowledgements are
possible.
3 ErrResetDelay s 1-3600 20 If the PVmaster is in error status, the cause must be inactive for at
least this amount of time so that the fault can be automatically
acknowledged.
4 NoErrTime s 1-3600 600 After an automatic reset, the fault must not occur for the amount of
time set here otherwise the counter will increment for the
acknowledgement attempts.
5 No. of trials 0-50 3 Maximum number of acknowledgement attempts to be carried out
Table A.37 Configuration > automatic acknowledgement

No. Designation Unit Value range Default Description

1 Max. DC output kW 0-200 - Maximum generator output permitted by the MPP tracking
2 Limit active Boolean TRUE/FALSE FALSE MPP tracking limits the generator output by an operating point shift
Table A.38 Configuration > Pdc limitation

No. Designation Unit Value range Default Description

1 Logger cycle time min 2-60 15 Cycle time of data acquisition
2 File upload Boolean After X minutes/ After X Upload cycle for online monitoring portal
daily minutes
Table A.39 Configuration > Data logger > configuration

PVmaster Appendix 77
 A.2 Description of touchscreen display parameters

No. Designation Unit Value range Default Description

1 Client ready Boolean TRUE/FALSE FALSE FTP client ready for file upload to online monitoring portal
2 Client active Boolean TRUE/FALSE FALSE FTP client sending file to online monitoring portal
3 Upload okay Boolean TRUE/FALSE FALSE File successfully uploaded to online monitoring portal
4 Error Boolean TRUE/FALSE FALSE File failed to upload to online monitoring portal
5 Reset - - - Resetting upload assignments
6 Test upload - - - Testing communication with online monitoring portal
Table A.40 Configuration > Data logger > FTP client

No. Designation Description

1 Server User level 2: Server settings
2 Authentication User level 2: Authentication settings
Table A.41 Configuration > Data logger > server and login

No. Designation Description

1 Set parameter values to User level 2: Parameter values being reset.
default Do not carry out a reset without consulting your project engineer.
2 Set energy values to User level 2: Yields being deleted
default
3 Delete trend data User level 2: Trend data being deleted
Table A.42 Configuration > factory settings

No. Designation Description

1 AC measurement User level 2: Various AC measurements
2 DC measurement User level 2: Various DC measurements
3 Start-up procedure User level 2
4 MPP tracking User level 2
5 Shut-down procedure User level 2
Table A.43 Configuration > AC measurements to shut-down procedure

No. Designation Unit Value range Default Description

1 Start-up threshold, inverter °C 0-200 70 Start-up threshold of enclosure fan for inverter inside
interior temperature
2 Start-up threshold, inverter °C 0-200 70 Start-up threshold of enclosure fan for inverter heat sink
heatsink
3 Start-up threshold, °C 0-200 90 Start-up threshold of enclosure fan for transformer
transformer
4 Start-up threshold, filter °C 0-200 90 Start-up threshold of enclosure fan for filter inductor
choke
5 Hysteresis, inverter interior °C 1-20 5 Shut-down hysteresis of enclosure fan for inverter inside
temperature
6 Hysteresis, inverter heatsink °C 1-20 5 Shut-down hysteresis of enclosure fan for inverter heat sink
7 Hysteresis, transformer °C 1-20 5 Shut-down hysteresis of enclosure fan for transformer
8 Hysteresis, filter choke °C 1-20 5 Shut-down hysteresis of enclosure fan for filter inductor
9 Operation Boolean TRUE/FALSE - Indicates whether the fan is on or off.
10 Auto/On - Auto/On Auto Auto: Fan cuts in depending on
temperature
On: Fans is switched on manually
Table A.44 Configuration > Fan control

No. Designation Description

1 Overheating User level 2
2 Manual control User level 2
Table A.45 Configuration > Overheating to Manual control

78 Appendix PVmaster
 A.2 Description of touchscreen display parameters

No. Designation Description

1 Diagnosis Display of faults which have occurred. The possible fault messages are listed in
Section 9, p. 65.
Table A.46 Diagnosis

PVmaster Appendix 79
 A.2 Description of touchscreen display parameters

80 Appendix PVmaster
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59423 Unna
GERMANY
Tel. +49 (0) 23 03 / 7 79 -0
Fax +49 (0) 23 03 / 7 79 -3 97

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