User’s Manual

ELECTRONICS FOR INDUSTRIAL AUTOMATION

PANEL METERS . SIGNAL CONVERTERS . LARGE DISPLAYS

Series C . C40-D OEM

APPLICATIONS
YOUR METER !

Multisignal panel meter

PANEL METERS. OEM APPLICATIONS

Multisignal digital panel meter, configurable to work as AC and DC voltmeter (up to 600 Vac / dc), AC and DC
ammeter (up to 5 Aac / dc), accepts process signals (mA, Vdc), thermocouples, resistive temperature probes
(Pt, Ni, PTC and NTC), resistances, potentiometers and frequency. Configurable. Standard 96 x 48 mm size
(1/8 DIN). Scalable reading with 4 digits (9999 / -1999). ‘Fast access’ function to alarm setpoints, ‘external
control’ to activate predefined functions, ‘Eco’ mode for low consumption, selectable dual scaling, 5 levels
of configurable brightness. Single universal power supply 18 to 265 Vac/dc. Optional modules for output
and control (relays, analog output, Modbus RTU). Recommended for OEM applications.

www.fema.es
4149r07 Tel. (+34) 93.729.6004 info@fema.es
FEMA ELECTRÓNICA . Series C . C40-D

1. Panel meter C40-D

Multisignal 96 x 48 mm panel meter, for OEM applications
Multisignal digital panel meter in 96 x 48 mm size (1/8 DIN), for OEM Instrument designed for industrial use, highly flexible, allows for in-
applications. Accepts AC and DC voltage signals from mV up to 600 V tegration in multiple applications, reduced cost, excellent quality and
and currents up to 5 A (AC measures in True RMS), process signals optional customization available.
(mA and Vdc) with excitation voltage included, thermocouples K, J, • ‘Fast access’ menu at front key UP (5) configurable for fast access
E, N, L, R, S, B, T and C, resistive temperature probes (Pt100, Pt500, to alarm setpoints (see section 1.20).
Pt1000, Ni100, Ni200, Ni1000, PTC and NTC), resistances, potentiom-
• ‘Eco’ mode reduces power consumption (see section 1.23).
eters and frequency. Scalable reading with 4 digits up to 9999 / -1999
with configurable decimal point. Two independent alarms, configu- • Simplified scaling configuration (see section 1.21).
rable as maximum or minimum, with hysteresis and setpoint. • Function ‘external control’ to activate with a contact a predefined
Optional 1 or 2 relay outputs, 4/20 mA isolated analog output, and function (second scaling, decimal point, reading ‘hold’, ‘tare’, memo-
Modbus RTU isolated serial communications. ry of maximum or minimum) (see section 1.24).
Front protection IP50, with optional IP65. Connections with plug-in • 5 configurable brightness levels (see section 1.29.7).
screw terminals.

1.1 How to order

Series Model Power Option 1 Option 2 Others Customization
C40 - D - U - - - -

-U (18-265 Vac/dc) -A1 (1 relay) -A2 (1 relay) -NBT (no front keypad) -XXXX (customized)
-M1 (analog output) -(empty) -65 (front IP65) -(empty)
-S1 (Modbus RTU) -(empty)
-(empty)

Index
1. Panel meter C40-D . . . . . . . . . . . . . . . . . . . . . . . 2 1.29 Configuration menu . . . . . . . . . . . . . . . . . . . 16
1.1 How to order . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.29.1 Input signal ranges . . . . . . . . . . . . . . . . . . 16
1.2 Front view . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.29.2 Scaling . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.3 Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.29.3 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.4 Power connections . . . . . . . . . . . . . . . . . . . . . 3 1.29.4 Fast access . . . . . . . . . . . . . . . . . . . . . . 18
1.5 Signal connections . . . . . . . . . . . . . . . . . . . . . 3 1.29.5 Super fast access . . . . . . . . . . . . . . . . . . . 18
1.6 Mechanical dimensions (mm) . . . . . . . . . . . . . . . 3 1.29.6 External control . . . . . . . . . . . . . . . . . . . 18
1.7 Installation and start-up . . . . . . . . . . . . . . . . . . 3 1.29.7 Menu ‘Tools’ . . . . . . . . . . . . . . . . . . . . . 19
1.8 Technical specifications . . . . . . . . . . . . . . . . . . . 4 1.29.8 Configuring the options . . . . . . . . . . . . . . . 21
1.9 Internal jumpers . . . . . . . . . . . . . . . . . . . . . . . 5 1.30 Full configuration menu . . . . . . . . . . . . . . . . . 22
1.10 Measuring AC voltages and AC currents . . . . . . . . . 6 1.31 Precautions on installation . . . . . . . . . . . . . . . 25
1.11 Measuring DC voltages and DC currents . . . . . . . . . 7 1.32 Factory configuration . . . . . . . . . . . . . . . . . . 25
1.12 Measuring thermocouples . . . . . . . . . . . . . . . . 8 1.33 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.13 Measuring with Pt and Ni probes . . . . . . . . . . . . . 9 1.34 CE declaration of conformity . . . . . . . . . . . . . . 25
1.14 Measuring with NTC probes . . . . . . . . . . . . . . . 10 2. Output and control modules . . . . . . . . . . . . . . . . . 26
1.15 Measuring with PTC probes . . . . . . . . . . . . . . . 10 2.1 Modules A1 and A2 (relay output) . . . . . . . . . . . . 26
1.16 Process measures . . . . . . . . . . . . . . . . . . . . 11 2.2 Module M1 (analog output) . . . . . . . . . . . . . . . 26
1.17 Measuring frequency . . . . . . . . . . . . . . . . . . 11 2.3 Module S1 (Modbus RTU) . . . . . . . . . . . . . . . . 27
1.18 Measuring resistances . . . . . . . . . . . . . . . . . . 12
3. Other options . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.19 Measuring potentiometers . . . . . . . . . . . . . . . 12
3.1 Option NBT . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.20 ‘Fast access’ menu . . . . . . . . . . . . . . . . . . . . 13
3.2 Option 65 . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.21 Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3 Option ‘customized’ . . . . . . . . . . . . . . . . . . . . 28
1.22 Offset reading . . . . . . . . . . . . . . . . . . . . . . 13
1.23 ‘Eco’ mode . . . . . . . . . . . . . . . . . . . . . . . . 13 4. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 29
1.24 External control . . . . . . . . . . . . . . . . . . . . . 13 4.1 Adapter DRA-M . . . . . . . . . . . . . . . . . . . . . . 29
1.25 Second scaling . . . . . . . . . . . . . . . . . . . . . . 13 4.2 Adapter KA96 . . . . . . . . . . . . . . . . . . . . . . . 29
1.26 To open the instrument . . . . . . . . . . . . . . . . . 14 4.3 Protector KIP . . . . . . . . . . . . . . . . . . . . . . . . 29
1.27 How to operate the menus . . . . . . . . . . . . . . . 15 4.4 WME wall housing . . . . . . . . . . . . . . . . . . . . . 29
1.28 Messages and errors . . . . . . . . . . . . . . . . . . . 15 4.5 THM benchtop housing . . . . . . . . . . . . . . . . . . 29
4.6 Set of units (included) . . . . . . . . . . . . . . . . . . . 29

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 FEMA ELECTRÓNICA . Series C . C40-D

1.2 Front view 1.5 Signal connections

Signals up to 600 V and 200 V (AC and DC) must be connected at
Alarm 2 Alarm 1 terminals 1 and 4. Signals for 5 A current (AC and DC) must be con-
nected at terminals 3 and 4. All other signals must be connected
between terminals 2 and 4. Terminal 5 is a ‘multifunction’ terminal,
configurable with one of the following functions :
• +15 Vdc excitation voltage (Vexc) for process signals
• +5 Vdc excitation for potentiometer signals
• connection for the Pt100 third wire compensation
• external contact ‘EK’ function
Logo Units
Units
To select the terminal 5 function, select the position of internal jump-
er ‘T’ (see section 1.9).

Key ‘LE’ Key ‘UP’ Key ‘SQ’

‘Fast access‘ ‘Configuration menu’ 1 2 3 4 5
(see section 1.29.4) (see section 1.29)

1.3 Rear view multifunc.{ Vexc, Pt100 3 wire, Pot+,

‘EK’ external control
Option 2 Option 1 Common { neutral, 0 V, common

5A { 5 Aac, ±5 Adc
~

Signal { thermocouple+,
Vac, ±Vdc, resistance, mA, pot,
~
Pt+, Ni+, PTC+, NTC+
HV signal {
600 Vac, 200 Vac
~ ~
±600 Vdc, ±200 Vdc

1.6 Mechanical dimensions (mm)

1 2 3 4 5 8 9 0

48
Signal Power
(see section 1.5) (see section 1.4) Units

96 16 75 8

Detail of the plug-in screw terminals provided with

the instrument. The instrument is provided with all
terminals needed, both male and female.
44 Panel
cut-out
92

1.4 Power connections

Earth connection - The instru-
8 9 0
ment does not need earth con-
nection for correct operation nor
1.7 Installation and start-up
for compliance with security reg-
ulations. Terminal 9 is is not con- + 1. Open the instrument as indicated at section 1.26 and access
~
nected to any internal circuit and the internal board.
Power 18 to 265 Vac/dc 2. Select jumpers ‘S’ for the signal range required (see section
is provided only as a safe place
for earth wire. ~ - 1.9).
3. Select jumper ‘T’ to assign to multifunction terminal 5 the re-
Fuse - This instrument has not internal fuse. Conforming to security quired functionality (see section 1.9).
regulation 61010-1, add a protection fuse to the power line to act as 4. Close the instrument ad indicated at section 1.26.
disconnection element, easily accessible to the operator and identi- 5. Connect the input signal and the power supply as indicated at
fied as a protection device. sections 1.4 and 1.5.
250 mA time-lag for power voltage > 50 Vac/dc 6. Enter the ‘configuration menu’ to configure the instrument
400 mA time-lag for power voltage < 50 Vac/dc (scaling, alarms, ...) (see section 1.29).

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FEMA ELECTRÓNICA . Series C . C40-D

1.8 Technical specifications

Digits
Functions included Section
number of digits 4
led 7 segments led Fast access to alarm setpoints, maxi- 1.20
color red mum and minimum
height 14 mm
External control second scaling 1.24
Reading
decimal point 0, 1, 2 or 3
max. reading 9999
‘hold’ reading
min. reading -1999
tare function
decimal point configurable X.X.X.X
memory of maximum
readings 3 readings / second
memory of minimum
display refresh 3 refresh / second
step response 300 mSec. (0 % to 99 % signal) ‘Eco’ mode reduced consumption 1.23
overrange reading flashes at ‘9999’
underrange reading flashes at ‘-1999’ Alarms setpoint 1.29.3
hysteresis
Accepted input signals set as max or min type
AC voltages and currents 600 Vac, 200 Vac, 20 Vac, 2 Vac
200 mVac, 60 mVac, 5 Aac, 20 mAac Offset reading subtract a fixed number 1.22
(see section 1.10) of counts to reading
DC voltages and currents ±600 Vdc, ±200 Vdc, ±20 Vdc, ±2 Vdc
±200 mVdc, ±60 mVdc, ±5 Adc, ±20 mAdc
Display filter recursive 1.29.7
(see section 1.11)
‘steps’
thermocouples K, J, E, N, L, R, S, B, T y C
(see section 1.12)
Simplified scaling 1.21
temperature ‘Pt’ Pt100 (2 and 3 wires with automatic
compensation up to 30 R), Pt500, Pt1000 Memory max and min memory 1.29.4
(see section 1.13)
Password blocks configuration 1.29.7
temperature ‘Ni’ Ni100, Ni200, Ni1000
(see section 1.13) Display brightness 5 levels 1.29.7
temperature ‘NTC’ (see section 1.14) Table 1 - Functions included
temperature ‘PTC’ (see section 1.15)
process 4/20 mA, 0/10 Vdc (active and passive)
(see section 1.16) Power wires 1 mm2 to 2.5 mm2 (AWG17 to AWG14)
frequency up to 100 Hz
Configuration 3 front push buttons
(see section 1.17)
resistances ranges of 5 K and 50 K
(see section 1.18) Front protection IP50 standard
potentiometers nominal value 500 Ohm up to 20 KOhm IP65 optional (see section 3.2)
(see section 1.19)
Output options relay, analog, serial
Accuracy at 25 ºC see following sections for each signal (see section 2)
Thermal drift 150 ppm/º
Mechanical
Excitation voltage +15 Vdc (max. 30 mA) for process signals mounting panel
+5 Vdc for potentiometers connections plug-in screw terminals
(at terminal 5, see sections 1.5 and 1.16) housing material ABS, polycarbonate (V0)
weight <150 grams
Power supply front size 96 x 48 mm (1/8 DIN)
power ‘U’ 18 to 265 Vac/dc panel cut-out 92 x 44 mm
isolation 1500 Veff. deep 91 mm (including terminals)
isolation tested for 60 sec.
AC frequency 50/60 Hz Temperature
consumption (without ‘Eco’) <1.5 W meter only operation from 0 to +50 ºC
<2.5 W meter with options storage from-20 to +70 ºC
consumption (with ‘Eco’) <0.3 W meter only ‘warm-up’ time 15 minutes
<1.5 W meter with options

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 FEMA ELECTRÓNICA . Series C . C40-D

1.9 Internal jumpers

Internal jumpers ‘S’ are associated to the signal range. The position Range Jumpers Jumper Range Jumpers Jumper
of internal jumper ‘T’ assigns the function of the multifunction termi- ‘S’ ‘T’ ‘S’ ‘T’
nal 5. At ‘Table 2’ see a list of signal ranges and associated jumper ‘S’
and ‘T’. At Table 3 see the position for jumper ‘T’ associated to each AC voltages and currents Thermocouples
function of the multifunction terminal 5. To access the internal jump- ~ 600 Vac GI Tc. K
ers, open the housing as explained at section 1.26. For additional
information on each signal range see the following sections : ~ 200 Vac I Tc. J
• Ranges for AC voltages and currents, see section 1.10 ~ 20 Vac AI Tc. E E
• Ranges for DC voltages and currents, see section 1.11
• Ranges for thermocouples, see section 1.12 ~ 2 Vac BI Tc. N
• Ranges for Pt and Ni probes, see section 1.13 4-5
• Ranges for NTC probes, see section 1.14 ~ 200 mVac CI Tc. L
4-5
• Ranges for PTC probes, see section 1.15 ~ 60 mVac EI Tc. R
• Ranges for process signals, see section 1.16
• Ranges for frequency signals, see section 1.17 ~ 5 Aac I Tc. S EJ
• Ranges for resistance measures, see section 1.18
• Ranges for potentiometer measures, see section 1.19 ~ 20 mAac DI Tc. T
DC voltages and currents Tc. C E
Displays
±600 Vdc G Tc. B EJ
±200 Vdc --- Pt and Ni probes
±20 Vdc A Pt100 (3 wire) FHJ 5-6
±2 Vdc B Pt100 (2 wire) FH
4-5
±200 mVdc C Pt500 F
Jumpers ‘T’ for terminal 5
function selection ±60 mVdc E Pt1000 F
4-5
±5 Adc --- Ni100 FH

Jumpers ‘S’ for signal K ±20 mAdc D Ni200 FH

range selection J
Process Ni1000 F
I
H 4/20 mA D NTC probes
G 1-2*
F 0/10 Vdc A NTC FK 4-5
E
1
* jumper 1-2 to activate Vexc. PTC probes
D
2 Select 4-5 to activate function ‘EK’
C KTY 121 F
3
B 4-5
4
A Resistances KTY 210, 220 FHK
5
6 0 to 5 K FHK Potentiometers
4-5
0 to 50 K FK 0/100 % A 2-3
5
6 Table 2 - Jumpers ‘S’ and ‘T’ and signal Table 2 - Jumpers ‘S’ and ‘T’ and signal
ranges ranges

Input signal terminals Jumpers ‘T’ Active function at terminal 5

12 Vexc (excitation voltage +15 Vdc) for process
K
J 23 Potentiometer excitation (+5 Vdc)
Jumpers not used can be stored for Jumpers stored at I
H
future use by placing them at the ‘no contact’ position 45 External control (‘EK’ function)
G
‘no contact’ positions indicated be- F
56 Pt100 third wire
low. Only the 3 positions indicated E
are safe to store jumpers. D Table 3 - Jumpers ‘T’ and function at multifunction terminal 5
C
B
A

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FEMA ELECTRÓNICA . Series C . C40-D

1.10 Measuring AC voltages and AC currents

• AC signal ranges See below a list of typical connections :
The instrument accepts the measure of AC voltages and
currents, with ranges from 60 mVac up to 600 Vac, cov- • 600 Vac • 20 Vac to 60 mVac​ • 5 Aac
ering from shunt signals to typical power line voltages • 200 Vac • 20 mAac
of 48 Vac, 115 Vac, 230 Vac and even 380 Vac. Both
phase - to - neutral and phase - to - phase measures are accepted.
AC currents signals up to 5 Aac are accepted, and it has a range of 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
20 mAac.
• ‘True RMS’ measure
AC measure are TrueRMS. The instrument assigns a ‘dead band’ ~600 Vac ~60 mVac ~5 Aac
around 0, with a configurable value between 0 and 100. Value is em-
~600 Vac ~60 mVac ~5 Aac
pirical, and by default is set to 20. The ‘dead band’ can be configured
at the ‘Configuration menu’ (see section 1.29.7).
• Scaling Applications
The instrument allows to scale the reading to 4 digits (9999 / -1999) measure of AC currents through a cur-
with configurable decimal point to any position. The ‘second scaling’ ... with shunts ... rent shunt of 60 mV, 100 mV or 150 mV
function can also be used (see section 1.25). and scaled reading
• Maximum oversignal measure of AC currents through a X/5
... with X/5, X/1 current
‘Maximum oversignal’ is the maximum signal accepted by the in- or X/1 current transformer and scaled
transformers ...
strument. Higher signal values may cause instrument damage. Low- reading
er values are non destructive but may be out of accuracy specifica-
tions. ... direct measure ... direct measure of currents up to 5 Aac
• Response times
The response time to a signal step is 300 mSeconds, independent of measure of voltages over power lines
the signal range selected. ... with power line voltages ... phase and neutral, of 230 Vac, 115 Vac,
...
• Terminal 5 ‘multifunction’ - External control
Terminal 5 remains configured as ‘EK’ external control function. See measure of phase to phase lines on
... with power voltages ...
section 1.9 for a list of available functions. power lines 380 Vac, 230 Vac, ...
• Start-up, connections and jumpers
measure of AC voltages in panels using
For instrument start-up follow the steps listed at section 1.7. Signal ... with AC voltages
24 Vac, 48 Vac, ...
connections are indicated at section 1.5. Location for internal jump-
ers is indicated at section 1.9. Table 6 - Applications with measure of AC signals

Vac ranges Scale Scalable Jumper ‘S’ Jumper ‘T’ Accuracy Max. Connection Zin
(Veff.) by default (see section 1.9) (see section 1.9) (% FS) oversignal (terminals)
~ 600 Vac* 600 GI 800 Vac 12 M
1(~ ) 4(~ )
~ 200 Vac 200.0 I 800 Vac 12 M
~ 20 Vac 20.00 from 9999 AI <0.30 % 150 Vac 1M
4-5
~ 2 Vac 2.000 to -1999 BI (up to 150 Hz) 100 Vac 100 K
2(~ ) 4(~ )
~ 200 mVac 200.0 CI 30 Vac 10 K
~ 60 mVac 60.0 EI 3 Vac 1M
Table 4 - Measuring ranges in Vac. *See section 1.34 for category of measure.

Aac ranges Scale Scalable Jumper ‘S’ Jumper ‘T’ Accuracy Max. oversig- Connection Zin
(Veff.) by default (see section 1.9) (see section 1.9) (% FS) nal (terminals)
5 Aac 5.00 I 7 Aac 3(~ ) 4(~ ) 20 mOhm
~
from 9999 <0.50 % (max. 7 sec.)
4-5
~ 20 mAac 20.00 to -1999 DI (up to 150 Hz) 25 mAac 2(~ ) 4(~ ) 4.7 R
Table 5 - Measuring ranges in Aac

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 FEMA ELECTRÓNICA . Series C . C40-D

1.11 Measuring DC voltages and DC currents

• Measuring DC signal ranges See below a list of typical connections :
The instrument accepts the measure of DC voltages
and currents, with ranges from 60 mVdc up to 600 Vdc, • ±600 Vdc • ±20 Vdc to ±60 mVdc​ • ±5 Adc
covering applications with current shunts, tachometric • ±200 Vdc • ±20 mAdc
dynamos, batteries, process, etc. DC currents signals up
to 5 Adc are accepted, and it has a range of 20 mAdc. 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
• Bipolar ranges
All signal ranges are bipolar, and the instrument can measure both
the positive and the negative signal.
common common common
• Scaling
±600 Vdc ±60 mVdc ±5 Adc
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with configurable decimal point to any position. The ‘second scaling’
function can also be used (see section 1.25).
Applications
• Maximum oversignal
measure of DC currents through a cur-
‘Maximum oversignal’ is the maximum signal accepted by the in-
... with shunts ... rent shunt of 60 mV, 100 mV or 150 mV
strument. Higher signal values may cause instrument damage. Low-
and scaled reading
er values are non destructive but may be out of accuracy specifica-
tions. direct measure of currents up to 5 Adc
... direct measure ...
• Response times and voltages up to 600 Vdc
The response time to a signal step is 300 mSeconds, independent of
the signal range selected. measure of the battery voltage at
... with batteries ...
12 Vdc and 24 Vdc
• Terminal 5 ‘multifunction’ - External control
Terminal 5 remains configured as ‘EK’ external control function. See
... with tachometric dyna- read the speed in RPM from a tacho-
section 1.9 for a list of available functions.
mos ... metric dynamo voltage signal
• Start-up, connections and jumpers
For instrument start-up follow the steps listed at section 1.7. Signal measure the voltage signal from the
connections are indicated at section 1.5. Location for internal jump- ... with speed variators ... variator, proportional to the RPM speed
ers is indicated at section 1.9. of the motor
Table 9 - Applications with DC signals

Vdc ranges Scale Scalable Jumper ‘S’ Jumper ‘T’ Accuracy Max. oversig- Connection Zin
by default (see section 1.9) (see section 1.9) (% FS) nal (terminals)
±600 Vdc 600 G 800 Vdc 12 M
1(+) 4(-)
±200 Vdc 200.0 --- 800 Vdc 12 M
±20 Vdc 20.00 from 9999 A <0.20 % 150 Vdc 1M
4-5
±2 Vdc 2.000 to -1999 B 100 Vdc 100 K
2(+) 4(-)
±200 mVdc 200.0 C 30 Vdc 10 K
±60 mVdc 60.0 E <0.25 % 3 Vdc 1M
Table 7 - Measuring ranges in Vdc

Adc ranges Scale Scalable Jumper ‘S’ Jumper ‘T’ Accuracy Max. oversig- Connection Zin
by default (see section 1.9) (see section 1.9) (% FS) nal (terminals)
±5 Adc ±5.00 --- <0.25 % 7 Aac 3(+) 4(-) 20 mOhm
from 9999 (max. 7 sec.)
4-5
±20 mAdc ±20.00 to -1999 D <0.15 % 25 mAdc 2(+) 4(-) 4.7 R
Table 8 - Measuring ranges in Adc

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FEMA ELECTRÓNICA . Series C . C40-D

1.12 Measuring thermocouples

• Thermocouples accepted • Compensated cable
The instrument accepts direct connection of thermo- To correctly measure a thermocouple signal, always use compensat-
couples type K, J, E, N, L, R, S, B, T and C. ed cable, of the thermocouple used, to connect the instrument and
the thermocouple.
• Temperature ranges and total error
Temperature ranges and total error for each type of thermocouple • Response times
are indicated on ‘Table 10’ below. The response time to a signal step is 300 mSeconds, independent of
the signal range selected.
• Cold junction compensation
The thermocouple cold junction is automatically compensated by • Terminal 5 ‘multifunction’ - External control
the instrument. The automatic compensation can be disabled from Terminal 5 remains configured as ‘EK’ external control function. See
the configuration menu. section 1.9 for a list of available functions.
• Resolution and units • Start-up, connections and jumpers
The instrument resolution when measuring thermocouples is 1º. For instrument start-up follow the steps listed at section 1.7. Signal
Reading can be configured in ºC (degrees Celsius) or ºF (degrees connections are indicated at section 1.5. Location for internal jump-
Fahrenheit). ers is indicated at section 1.9.
• Sensor break detection See below connections for thermocouple :
1 2 3 4 5
In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’
(see section 1.28) depending on the broken cable.

tc -
tc +

Thermocouple Jumper ‘S’ Jumper ‘T’ Range in ºC Connection Total error

(see section 1.9) (see section 1.9) (in ºF) (terminals) (cold junction included)

-100 / 1350 ºC
Thermocouple K
(-148 / 2462 ºF)

-100 / 1200 ºC
Thermocouple J
(-148 / 2192 ºF)

-100 / 1000 ºC
Thermocouple E E
(-148 / 1832 ºF)

-100 / 1300 ºC
Thermocouple N
(-148 / 2372 ºF)
4-5 <3 º
-100 / 900 ºC
Thermocouple L
(-148 / 1652 ºF)
2 (tc +)
4 (tc -)
0 / 1768 ºC
Thermocouple R
(32 / 3214 ºF)

0 / 1768 ºC
Thermocouple S EJ
(32 / 3214 ºF)

-100 / 400 ºC
Thermocouple T
(-148 / 752 ºF)

0 / 2300 ºC
Thermocouple C E
(32 / 4172 ºF)
<5 º
700 / 1820 ºC
Thermocouple B EJ
(1292 / 3308 ºF)

Table 10 - Temperature ranges for thermocouples

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 FEMA ELECTRÓNICA . Series C . C40-D

1.13 Measuring with Pt and Ni probes

• Accepted Pt and Ni probes • Terminal 5 ‘multifunction’ - ‘Pt100 3 wire’ or ‘External control’
The instrument accepts connection of Pt100, Pt500 and To configure for 3 wire Pt100 probes, set internal jumper ‘T’ at posi-
Pt1000 temperature probes, and also Ni100, Ni200 and tion 5-6 (see section 1.9). Terminal 5 will be assigned to the connec-
Ni1000 temperature probes. Temperature ranges for tion of the third wire of the Pt100 probe, for automatic wire resis-
each type of probe are indicated on ‘Table 11’ below. tance compensation purposes, up to 30 R.
• Pt100 with 2 and 3 wires To configure for 2 wire Pt100 probes, set internal jumper ‘T’ at posi-
The instrument accepts connection for 2 and 3 wire Pt100 probes. tion 4-5 (see section 1.9). Terminal 5 will be configured as ‘EK’ exter-
For 3 wire Pt100 probes, configure internal jumper ‘T’ at position 5-6 nal control function. See section 1.9 for a list of available functions.
(see section 1.9). For 2 wire Pt100 probes, configure internal jumper • Start-up, connections and jumpers
‘T’ at position 4-5. Compensation of the wire resistance for 2 wire
For instrument start-up follow the steps listed at section 1.7. Signal
probes can be manually configured with the parameter ‘Offset read-
connections are indicated at section 1.5. Location for internal jump-
ing’ (‘oFFS’) (see section 1.22) which allows to configure a fixed num-
ers is indicated at section 1.9.
ber of counts to be added to the reading.
See below a list of typical connections :
• Resolution and units
The temperature resolution using Pt and Ni temperature probes is
configurable to 1º or 0.1º. Reading can be configured in ºC (degrees • Pt100 3 wires • other probes 2 wires
Celsius) or ºF (degrees Fahrenheit).
• Sensor break detection
In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’ 1 2 3 4 5 1 2 3 4 5
(see section 1.28) depending on the broken cable.
Sense
• Alpha temperature coefficient
Pt-
The instrument accepts Pt probes (Pt100, Pt500, Pt1000) with ‘Al- Pt-, Ni-
pha’ parameter of ‘0.0385’ and ‘0.0390’ (see section 1.29.7). This pa-
Pt+ Pt+, Ni+
rameter is associated to the specific model of probe installed.

Sensor Jumper ‘S’ Jumper ‘T’ Range in ºC Total error Connection Current at
(see section 1.9) (see section 1.9) (in ºF) (terminals) sensor
2 (Pt+)
-200 / 700 ºC
Pt100 3 wires FHJ 5-6 4 (Pt -) < 900 uA
(-328 / 1292 ºF)
5 (sense)

-200 / 700 ºC
Pt100 2 wires FH
(-328 / 1292 ºF)

-150 / 630 ºC
Pt500 F < 90 uA
(-238 / 1166 ºF)

-190 / 630 ºC <1º

Pt1000 F < 90 uA
(-310 / 1166 ºF)
2 (Pt+, Ni+)
4-5
4 (Pt -, Ni-)
-60 / 180 ºC
Ni100 FH < 900 uA
(-76 / 356 ºF)

-60 / 120 ºC
Ni200 FH < 900 uA
(-76 / 248 ºF)

-60 / 180 ºC
Ni1000 F < 90 uA
(-76 / 356 ºF)

Table 11 - Ranges of temperature for Pt and Ni probes

9
FEMA ELECTRÓNICA . Series C . C40-D

1.14 Measuring with NTC probes

• Accepted NTC probes • Sensor break detection
The NTC probe is a temperature variable resistor with a In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’
temperature - resistance curve defined by two param- (see section 1.28) depending on the broken cable.
eters called ‘R25’ and ‘beta’. By default, the instrument
• Terminal 5 ‘multifunction’ - External control
is configured for a standard NTC with ‘R25’ of 10K and
‘beta’ of 3500. The measured temperature ranges from -60 ºC to Terminal 5 remains configured as ‘EK’ external control function. See
150 ºC. section 1.9 for a list of available functions.

Different NTC probes can be used, by configuring the instrument for • Start-up, connections and jumpers
different values of ‘R25’ and ‘beta’. The instrument measures resis- For instrument start-up follow the steps listed at section 1.7. Signal
tance from 100 R up to 1 MOhm. Use ‘Table 12’ to write down values connections are indicated at section 1.5. Location for internal jump-
for your NTC. ers is indicated at section 1.9.
• Parameters ‘R25’ and ‘Beta’ See below connections for NTC probe :
The instrument accepts values of ‘beta’ between 2500 and 5500, and
values of R25 between 1.0 K and 200.0 K
1 2 3 4 5
• Resolution and units
The temperature resolution using NTC temperature probes is con-
figurable to 1º or 0.1º. Reading can be configured in ºC (degrees Cel-
sius) or ºF (degrees Fahrenheit).
ntc -
ntc +

NTC ‘R25’* Jumper ‘S’ Jumper ‘T’ Range Accuracy Connection Beta* Range NTC probe
(configurable) (see section 1.9) (see section 1.9) of measure (% of reading) (terminals) (configurable) of measure Temp. R25 Beta

100 R
from -60 ºC <1.5% of 2 (NTC +)
10K FK 4-5 3500
to 150 ºC reading 4 (NTC -)
1 MR

Table 13 - *‘Beta’ is configurable from 2000 to 5500. ‘R25’ is configurable from 1.0 K up to 200.0 K. Table 12 - Data from NTC datasheet

1.15 Measuring with PTC probes

• Accepted PTC probes • Sensor break detection
The instrument accepts direct connection of PTC In case of sensor break, the instrument will show ‘h.ovr’ or ‘h.udr’
probes. Accepted PTC probes are listed at ‘Table 14’. (see section 1.28) depending on the broken cable.
• Resolution and units • Terminal 5 ‘multifunction’ - External control
The temperature resolution using PTC temperature probes is con- Terminal 5 remains configured as ‘EK’ external control function. See
figurable to 1º or 0.1º. Reading can be configured in ºC (degrees Cel- section 1.9 for a list of available functions.
sius) or ºF (degrees Fahrenheit).
• Start-up, connections and jumpers
Family Sensor Jumper ‘S’ Jumper ‘T’ Range in ºC Total error For instrument start-up follow the steps listed at section
(see section 1.9) (see section 1.9) (in ºF) 1.7. Signal connections are indicated at section 1.5. Loca-
tion for internal jumpers is indicated at section 1.9.
KTY81-121 See below connections for PTC probe :
KTY 121 F
KTY82-121

KTY81-210 -55 / 150 ºC 1 2 3 4 5

KTY 210 FHK 4-5 <1º
KTY82-210 (-67 / 302 ºF)

KTY81-220
KTY 220 FHK
KTY82-220
ptc -
Table 14 - Ranges of temperature for PTC probes ptc +

10
 FEMA ELECTRÓNICA . Series C . C40-D

1.16 Process measures

• Measuring process signals • Start-up, connections and jumpers
The instrument accepts the measure of process signals in For instrument start-up follow the steps listed at section 1.7. Signal
4/20 mA and 0/10 Vdc. The instrument provides excita- connections are indicated at section 1.5. Location for internal jumpers
tion voltage to power up transducers. is indicated at section 1.9.
• Scaling See below a list of typical connections :
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with configurable decimal point to any position. The ‘second scaling’ • signal 4/20 mA passive • signal 0/10 Vdc passive
function can also be used (see section 1.25).
1 2 3 4 5 1 2 3 4 5
• Maximum oversignal
‘Maximum oversignal’ is the maximum signal accepted by the instru-
ment. Higher signal values may cause instrument damage. Lower val- +15 Vdc (mA+) +15 Vdc
ues are non destructive but may be out of accuracy specifications.
signal (mA-) common
• Response times
+Vdc
The response time to a signal step is 300 mSeconds, independent of
the signal range selected.
• signal 4/20 mA active • signal 0/10 Vdc active
• Terminal 5 ‘multifunction’ - ‘Vexc’ or ‘External control’
To configure the +15 Vdc excitation voltage at terminal 5, set internal 1 2 3 4 5 1 2 3 4 5
jumper ‘T’ at position 1-2 (see section 1.9). Transducers with a con-
sumption of up to 30 mA can be powered from this terminal.
To configure the ‘EK’ external contact function at terminal 5, set inter-
nal jumper ‘T’ at position 4-5 (see section 1.9). See section 1.9 for a list mA - common
of available functions.
mA + +Vdc

Ranges Scale Scalable Jumper ‘S’ Jumper ‘T’ Accuracy Max. Connection Zin
of measure by default (see section 1.9) (see section 1.9) (% FS) oversignal (terminals)
passive 2 (signal)
1-2 5 (Vexc)
(needs Vexc.)
4/20 mA D <0.15 % 25 mA 4.7 Ohm
active 4-5 2 (mA+)
de 9999 4 (mA-)
passive 0/100.0 2 (+Vdc)
a -1999 1-2 4 (comm.)
0/10 Vdc (needs Vexc.) A <0.20 % 25 Vdc 5 (Vexc) 1M
active 4-5 2 (+Vdc)
4 (comm.)
Table 15 - Ranges of measure for process signals

1.17 Measuring frequency

• How the instrument measures frequency measure frequency from Aac signals. See example at section below.
The instrument measures frequency from an AC voltage • Scaling
(Vac) or AC current (Aac) signal. The instrument detects The default resolution is 0.1 Hz. The instrument allows to scale the
each ‘0’ crossing of the signal, either ‘0 Vac’ or ‘0 Aac’. All reading to 4 digits (9999 / -1999) with configurable decimal point
available Vac and Aac signal ranges are accepted as frequency input to any position. The ‘second scaling’ function can also be used (see
signal. section 1.25).
• How to configure the instrument to measure frequency • Maximum and minimum signal
To measure frequency from a Vac signal, select the internal jumpers for Frequency signals below 15 Hz are measured as ‘0’. Frequency sig-
the desired AC voltage range (see section 1.9), connect the signal for nals higher than 100 Hz are out of accuracy. Signals higher than
the selected voltage range (see section 1.10), and configure the instru- 1000 Hz will read ‘display overflow’ ‘d.oVr’ error.
ment to measure frequency (see section 1.29.1). The same applies to
• Example
Ranges Scale Scalable AC signal Jumper ‘T’ Response Accuracy
of measure by default (see section 1.9) (see section 1.9) time (% reading) To measure the 50 Hz frequency from a 230 Vac
power line, select jumpers ‘GI’ for 600 Vac signal
15 Hz to from 9999 select Vac or <0.15% of range (see section 1.9), connect signal to termi-
0/100.0 4-5 70 mSec. nals ‘1’ and ‘4’ (see section 1.10), and configure
100 Hz to -1999 Aac range reading
‘frequency’ at the input signal configuration
Table 16 - Ranges of measure for frequency menu (see section 1.29.1).

11
FEMA ELECTRÓNICA . Series C . C40-D

1.18 Measuring resistances

• Measuring resistive signals • Response times
The instrument accepts the measure of resistances and The response time to a signal step is 300 mSeconds, independent of
provides two ranges of measure from 0 to 5 K and from the signal range selected.
0 to 50 K.
• Terminal 5 ‘multifunction’ - External control
• Compensating the resistance of the signal wire
Terminal 5 remains configured as ‘EK’ external control function. See
Resistances are measured with 2 wires system. To compensate for section 1.9 for a list of available functions.
the possible error introduced by the resistance of the signal wires,
the instrument allows to configure a fixed number of counts to be • Start-up, connections and jumpers
added to the reading, both in positive or negative. This is done with For instrument start-up follow the steps listed at section 1.7. Signal
the parameter ‘Offset reading’ (‘oFFS’) (see section 1.22). connections are indicated at section 1.5. Location for internal jump-
ers is indicated at section 1.9.
• Scaling
The instrument allows to scale the reading to 4 digits (9999 / -1999) See below connections for resistance measures :
with configurable decimal point to any position. The ‘second scaling’
function can also be used (see section 1.25). 1 2 3 4 5

Ranges Scale Scalable Jumper ‘S’ Jumper ‘T’ Accuracy

of measure by default (see section 1.9) (see section 1.9) (% of reading)
res -
0 to 5 K 5.000 from 9999 FHK <1.5% of res +
4-5
0 to 50 K 50.00 to -1999 FK reading

Table 17 - Ranges of measure for resistances

1.19 Measuring potentiometers

• Measuring potentiometers • Start-up, connections and jumpers
The instrument accepts the measure of 3 wire potenti- For instrument start-up follow the steps listed at section 1.7. Signal
ometers, with a single default range of 0/100 % of the connections are indicated at section 1.5. Location for internal jump-
potentiometer span. ers is indicated at section 1.9.
See below connections for measure of potentiometers ::
• Scaling
The instrument allows to scale the reading to 4 digits (9999 / -1999)
with configurable . 1 2 3 4 5

• Response times
The response time to a signal step is 300 mSeconds, independent of Pot+ (5 Vdc)
the signal range selected. Pot- (comm.)
• Terminal 5 ‘multifunction’ - ‘Vexc’ Signal
To measure potentiometer signals, set internal jumper ‘T’ at position
2-3 (see section 1.9). Terminal 5 will be assigned to a +5 Vdc excita-
tion voltage for the potentiometer.

Nominal Ranges Scale Scalable Jumper ‘S’ Jumper ‘T’ Accuracy

pot. value of measure by default (see section 1.9) (see section 1.9) (% FS)

from 500 R from 9999

0 to 100 % 0/100.0 A 2-3 <0.5%
up to 20 K to -1999

Table 18 - Ranges of measure for potentiometers

12
 FEMA ELECTRÓNICA . Series C . C40-D

1.20 ‘Fast access’ menu 1.23 ‘Eco’ mode

The ‘fast access’ menu allows to configure the front key ‘UP’ (‘5’) as The ‘Eco’ mode reduces the consumption of the instrument to a level
a direct access to the alarm 1 and / or alarm 2 setpoint values, and / or of 0.3 W. The ‘Eco’ mode turns off the display, while the right decimal
the memory of maximum and minimum reading. The objective is to point remains flashing gently on and off, showing that the instrument
provide the operator with a fast and direct access to alarm setpoints, is running on the background.
without accessing the standard configuration menu. Display will turn on when an alarm activates, or when the opera-
Access to ‘fast access’ menu is still allowed even with active ‘pass- tor touches any of the front keys. If no alarms are active, and there
word’ function, allowing the operator to modify the alarm setpoints, is no interaction from the operator, the instrument will turn off the
while still blocking any other change on the configuration. display. The waiting time before display turn off is configurable from
The ‘fast access’ menu is configurable, and it allows to assign to the 5 to 255 seconds.
front key none, one, several or all of the available functions. In case To configure the ‘Eco’ mode see the configuration menu at ‘Tools’ \
of configuring access only to alarm 1, when pushing front key ‘UP’ ‘Eco’ (see section 1.29.7).
(‘5’), the display directly access the setpoint value of alarm 1 (same
for alarm 2)
To configure the ‘fast access’ menu see section 1.29.4.
1.24 External control
The ‘external control’ function allows to activate, by closing a free
1.21 Scaling potential contact, one of the following configurable functions :
• activation of the second scaling
The instrument can scale the reading to any value between 9999 and • change the active decimal point
-1999 and configure the decimal point position, for all signal ranges • ‘hold’ the reading
except temperature ranges (thermocouples, Ni and Pt sensors, NTC • ‘tare’ function
and PTC sensors) are not scalable. The scaling configuration is a sim- • visualize de memory of maximum (or minimum)
plified two steps process : To configure the ‘EK’ external contact function, set internal jumper
1. configure at the ‘Display Low’ (‘d.Lo’) parameter the reading ‘T’ at position 4-5 (see section 1.9). The ‘EK’ external control function
value associated to the low signal range is not compatible with function ‘Vexc’ (excitation voltage), the mea-
sure of 3 wire Pt100, and the measure of potentiometers.
2. configure at the ‘Display High’ (‘d.Hi’) parameter the reading
value for the high signal range To assign a function to the ‘external control’ see the configuration
Some examples are explained below: menu at ‘External control’ (see section 1.29.6).
• for AC voltage and current ranges, for example 0/600 Vac, The function associated to the ‘EK’ external control activates when
configure at ‘d.Lo’ the reading for a signal of 0 Vac. Configure at short-circuiting terminal 5 and terminal 4.
‘d.Hi’ the reading for a signal of 600 Vac.
* Risk of electric shock. The ‘EK’ external control function shares termi-
• for DC voltage and current ranges, for example ±600 Vdc, con- nal 4 with the common of the input signal connection. When measur-
figure at ‘d.Lo’ the reading for a signal of 0 Vdc. Configure at ing dangerous voltages AND using ‘EK’ external control contact, apply
‘d.Hi’ the reading for a signal of 600 Vdc. the appropriate protections to isolate the operator from dangerous voltages.
• for process ranges, for example 4/20 mA, configure at ‘d.Lo’ the
reading for a signal of 4 mA. Configure at ‘d.Hi’ the reading for a
signal of 20 mA.
• for potentiometer ranges, configure at ‘d.Lo’ the reading for a 1.25 Second scaling
signal of 0% (0 R). Configure at ‘d.Hi’ the reading for a signal of
100% (nominal of the potentiometer). The instrument provides a ‘second scaling’, independent and addi-
tional to the standard scaling explained at section 1.21. Control of
To configure the scaling see section 1.29.2.
the scaling to be applied, with a free potential contact called ‘Exter-
nal control’. To configure the ‘second scaling’ :
1.22 Offset reading 1. configure the internal jumper ‘T’ to activate the ‘EK’ external
control function (see section 1.9).
The ‘Offset reading’ (‘oFFS’) parameter allows a number of counts
2. associate the external control to the ‘second scaling’ function,
to be subtracted from the reading. This is specially useful to manu-
at the configuration menu ‘ScL.2’ set the value ‘EXt.c’ (‘External
ally compensate for resistance errors due to wire resistance, when
control’) (see section 1.29.6)
measuring with 2 wires Ni and Pt probes, and resistances. Applies
to all signal ranges. See configuration menu at ‘Tools’ \ ‘oFFS’ (see 3. configure the scaling at the configuration menu ‘Tools’ \ ‘ScL.2’
section 1.29.7). (see section 1.29.7).
4. apply connections to the external control

13
FEMA ELECTRÓNICA . Series C . C40-D

1.26 To open the instrument

B D

To open the housing and access the internal circuits, use a flat screw-
driver to unlock clips ‘D’, ‘C’, ‘B’ and ‘A’, in this order. Remove the
front filter. Let the inside of the instrument slide out of the housing.
To reinsert the instrument make sure that all modules are correctly
connected to the pins on the display module. Place all the set into
the housing, assuring that the modules correctly fit into the internal
guiding slides of the housing. Once introduced, place again the front
filter at cover ‘X’, and then insert clips ‘A’, ‘B’, ‘C’ and ‘D’, in this order.
C

X
A
Risk of electric shock. Removing the front cover will
grant access to the internal circuits. Disconnect the in-
put signal to prevent electric shock to the operator. Op-
eration must be performed by qualified personnel only.
Observe precautions for handling ESD (electrostatic dis-
charge) sensitive devices

The internal structure of the instrument is shown in the graphic be-

low.
Module ‘Opt.2’ connects to module ‘Opt.1’. Module ‘Opt.1’ connects
to the display. Optional modules can be replaced, changed, added or
removed simply by placing the proper module at the proper location.
See section 2 for a list of available optional modules.

Optional modules

Front filter Display

Opt.1

Opt.2
Opt.1

Motherboard

Housing

14
 FEMA ELECTRÓNICA . Series C . C40-D

1.27 How to operate the menus

The instrument has two menus accessible to the user : Example of operation inside the
‘configuration menu’.
‘Configuration menu’ (key SQ) (<) (1)
(6) 1. The SQ (<) key enters into the
‘Fast access’ menu (key UP) (5) (2) (4)
‘configuration menu’.
(5)
Configuration menu Input (3)
2. The SQ (<) key enters into the
(4)

The ‘configuration menu’ modifies the configuration parameters to (3)

(5) ‘InP’ option menu.
adapt the instrument to the application needs. To access the ‘con- (3)
3. The UP (5) key moves through
(4)
figuration menu’ press for 1 second the SQ (<) key. This access can the menu options.
(5)
be blocked by activating the ‘Password’ (‘PASS’) function. While (3)
operating the ‘configuration menu’, the alarm status is ‘hold’ to the (4) 4. The SQ (<) key selects the
status they had before accessing the menu, and the output and con- (5) desired range and returns to the
(6)
trol modules remain in ‘error’ state. When leaving the ‘configuration (3) ‘InP’ menu.
menu’, the instrument applies a system reset, followed by a brief (3) (3) 5. The LE (3) key leaves the ac-
disconnection of the alarms and the output and control modules. tual menu level and moves to the
Functionality is then recovered. previous menu level.
Note : example menu indicated
For a detailed explanation on the ‘configuration menu’ see section above is for information purposes 6. The LE (3) key leaves the ‘con-
1.30, and for a full view of the ‘configuration menu’ structure see only, and may not match with the figuration menu’. Changes are ap-
section 1.30. actual menu entries of the instru-
plied and saved at this moment.
ment.
‘Fast access’ menu
The ‘fast access’ menu is an operator configurable menu, providing
fast and direct access to the most usual functions of the instrument
with a single key pad stroke. Press key UP (5) to access this menu.
1.28 Messages and errors
See section 1.20 for a list of functions eligible for ‘fast access’ in this The error messages are shown on display in flash mode.
instrument. The ‘Password’ (‘PASS’) function does not block access
to this menu. Accessing and modifying parameters in the ‘fast access’
menu does not interfere with the normal functionality of the instru- Messages and errors
ment, and it does not generate any system reset when validating the ‘h.udr’ Hardware underrange (‘h.udr’) / overrange (‘h.ovr’). In-
changes. ‘h.oVr’ put signal is lower / higher than the minimum / maxi-
Front key pad description mum signal the instrument can detect.

Key SQ (<) - press the SQ (<) key for 1 second to access the ‘con- ‘d.udr’ display underrange (‘d.udr’) / overrange (‘d.ovr’). The
figuration menu’. Inside the menu, the SQ (<) key functions as a ‘d.oVr’ instrument already displays the minimum / maximum
‘ENTER’ key. It selects and accesses the menu option currently dis- value possible (9999 / -1999).
played. At menus with numerical value entries, it validates the num- ‘Err.1’ incorrect password.
ber displayed.
Table 19 - Messages and error codes
Key UP (5) - the UP (5) key gives access to the ‘fast access’ menu.
Inside the menus, it moves vertically through the different menu op-
tions. At menus with numerical value entries, it modifies the digit
selected by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
Key LE (3) - inside the menus, the LE (3) key functions as the ‘ES-
CAPE’ key. It leaves the selected menu, and eventually, will leave the
whole menu. When leaving the ‘configuration menu’ with the LE (3)
key, the changed parameters are activated. At menus with numeri-
cal value entries, the LE (3) key allows to select the active digit. To
modify the value of the selected digit use the UP (5) key.

Menu ‘rollback’
After 30 seconds without interaction from the operator, the instru-
ment will rollback and leave the ‘configuration menu’ or the ‘fast ac-
cess’ menu. All changes will be discarded.

15
FEMA ELECTRÓNICA . Series C . C40-D

1.29 Configuration menu

Press ‘SQ’ (<) for 1 second to access the ‘configuration menu’.
For a description on how to operate inside the menus see section
1.29.1 Input signal ranges
1.27. For a full vision of the ‘configuration menu’ structure see Access the ‘Input’ (‘InP’) menu to select the input signal range. For a
section 1.30. correct reading, the internal jumper ‘T’ (see section 1.9) must also be
selected accordingly.
600 Vac range
Input AC signals The instrument offers the following signal ranges :
200 Vac range

20 Vac range • ‘AC signals’ (‘Ac’) - select a range between 600 Vac, 200 Vac,
20 Vac, 2 Vac, 200 mVac, 60 mVac, 5 Aac and 20 mAac. The AC mea-
2 Vac range
sure ranges provide ‘True RMS’ reading.
200 mVac range

60 mVac shunt range • ‘DC signals’ (‘dc’) - select a range between ±600 Vdc, ±200 Vdc,
±20 Vdc, ±2 Vdc, ±200 mVdc, ±60 mVdc, ±5 Adc and ±20 mAdc. Dc
5 Aac range measures are bipolar.
20 mAac range

• ‘Process’ (‘Proc’) - select 4/20 mA or 0/10 Vdc. The instrument

provides excitation voltage to power up transducers at terminal 5.
To configure the excitation voltage, see section 1.16.
±600 Vdc range
DC signals
±200 Vdc range
• ‘Thermocouples’ (‘tc’) - select the thermocouple type between
±20 Vdc range
K, J, E, N, L, R, S, B, T and C. The instrument automatically compen-
sates for the thermocouple cold junction.
±2 Vdc range

±200 mVdc range • ‘RTD probes’ (‘rtd’) - the ‘rtd’ menu offers temperature resis-
tive probes type Pt (platinum) and Ni (Nickel). Select the type of
±60 mVdc shunt range probe from the available options Pt100 3 wire, Pt100 2 wire, Pt500,
Pt1000, Ni100, Ni200 and Ni1000. For measures with 2 wires, a
±5 Adc range
manual compensation for the wire resistance error is available us-
±20 mAdc range ing parameter ‘Offset reading’ (‘oFFS’) (see section 1.22).

• ‘NTC probes’ (‘ntc’) - select the ‘ntc’ menu to configure the input
for NTC probes. To correctly configure the measure for NTC, two pa-
4/20 mA range
rameters need to be defined : first the resistance of the NTC probe
Process at 25º (‘r.25’) and parameter ‘beta’ (‘bEtA’). The instrument accepts
0/10 Vdc range
beta values between 2000 and 5500, and values of R25 between
1.0 K and 200.0 K. For more information on NTC measures see sec-
thermocouple K tion 1.14.
Thermocouples
thermocouple J
• ‘PTC probes’ (‘Ptc’) - select the ‘ptc’ menu to configure the input
thermocouple E for PTC probes. Select K121 for PTC probes from the KTY-121 family
(KTY81-121 and KTY82-121). Select K220 for PTC probes from the
thermocouple N
KTY-210 family (KTY81-210 and KTY82-210) and KTY-220 (KTY81-
thermocouple L
220 and KTY82-220). For more information on PTC probes see sec-
tion 1.15.
thermocouple R

thermocouple S

thermocouple B

thermocouple T

thermocouple C

16
 FEMA ELECTRÓNICA . Series C . C40-D

1.29 Configuration menu (cont.)

Pt100 2 wires • ‘Resistance’ (‘rES’) - select 5 K for a measuring range from 0 to
5 KOhms or select 50 K for a measuring range of 0 to 50 KOhms.
RTD probes
Pt100 3 wires For a manual compensation for the error introduced by the signal
wires, see parameter ‘Offset reading’ (‘oFFS’) (see section 1.22).
pt500
• ‘Potentiometer’ (‘Pot’) - potentiometer measure has a single
Pt1000 range, valid for any potentiometer with nominal value between
500 R and 20 K.
Ni100
• ‘Frequency’ (‘FrEq’) - frequency measure has no selectable rang-
Ni200 es. The instrument reads frequency up to 100 Hz, within accuracy
specifications. For more information on frequency measuring see
Ni1000 section 1.17.

res. at
25º
1.29.2 Scaling
NTC probes
beta Scale the reading at the ‘Scaling’ (‘ScAL’) menu. Temperature ranges
(thermocouples, Pt and Ni probes, NTC and PTC probes) have direct
temperature indication and are not scalable.
KTY 121 family
PTC probes To configure the scaling, enter the ‘Decimal point’ (‘dP’) parameter
KTY 210 and 220 family and select the desired position for the decimal point, using key ‘LE’
(3).
range 0 to 5 K Then configure at the ‘Display Low’ (‘d.Lo’) parameter the reading
Resistance value associated to the low signal range and configure at the ‘Display
range 0 to 50 K
High’ (‘d.Hi’) parameter the reading value for the high signal range.
For more information see section 1.21.
Potentiometer

Frequency

1.29.3 Alarms
The instrument has 2 independent and configurable alarms.
Scaling Decimal point
Control the independent activation of relays A1 installed (optionally)
at slots 1 and 2 (see section 2.1) from menu entries ‘Alarm 1’ (‘ALr1’)
Display Low and ‘Alarm 2’ (‘ALr2’). Alarms control also the activation of front leds
‘1’ and ‘2’ located as indicated at section 1.2.
To configure the alarms, enter at the alarm menu (‘ALr1’, or ‘ALr2’)
Display High and configure the following parameters :
• at the ‘Alarm type’ (‘TypE’) parameter select alarm as as a max-
imum type alarm (‘MAX’) or a minimum type alarm (‘MIn’). The
maximum type alarm (or minimum type) activates when the dis-
play value is higher (or lower) than the setpoint value.
Alarm 1 Alarm type
• at the ‘Setpoint’ (‘SEt’) parameter enter the value for the alarm
activation point. This parameter is eligible for configuration through
the ‘Fast access’ menu (see section 1.20).
Setpoint
• configure the hysteresis value at ‘Hysteresis’ (‘hySt’). The hys-
teresis applies to the deactivation process of the alarm. The alarm
Hysteresis deactivates when the reading has passed the setpoint value plus
the hysteresis value. Hysteresis helps to avoid repetitive switching
of the alarm relays, due to fluctuating input signals around the set-
point.

17
FEMA ELECTRÓNICA . Series C . C40-D

1.29 Configuration menu (cont.)

1.29.4 Fast access
Alarm 2 Alarm type The key ‘UP’ (5) at the front of the instrument gives access to a list
of functions configurable by the operator. See section 1.27 for an ex-
planation on how to operate the ‘fast access’ menu.

Setpoint
The ‘Key UP (Fast access)’ (‘K.uP’) menu allows to select which func-
tions will be accessible when pressing the front key ‘UP’ (5). Select
‘on’ to activate each function.
Hystereses • the ‘Setpoint 1’ (‘ALr1’) function allows to visualize and modify
the setpoint value of alarm 1.
• the ‘Setpoint 2’ (‘ALr2’) function allows to visualize and modify
the setpoint value of alarm 2.
Key UP Setpoint 1
(fast access)
•the ‘Memory of maximum’ (‘MAX’) or ‘Memory of minimum’
(‘MIn’) allows to visualize the memory of maximum and minimum
reading. The memory resets when the instrument restarts (power
Setpoint 2
off-on cycle, or when leaving the configuration menu with a change
to be applied).
Memory of max. • the ‘Tare function’ (‘tArE’) allows to visualize the actual tare value.

Memory of min.
1.29.5 Super fast access
If only a single function is selected for the ‘fast access’ menu, press-
‘Tare’ function ing the the ‘UP’ (5) key will shortly display the function name and
then automatically jump to the function value.

1.29.6 External control

External control Disabled
An external on / off control can be connected to the rear of the in-
strument. The operator can then control the activation of a config-
ured function based on the state of this control. Function remains ac-
Memory of max.
tivated while the external contact is closed, and will deactivate when
contact is open. To configure the function associated to the external
control, enter the menu ‘External control’ (‘EXt.c’).
Memory of min.
• select ‘Disabled’ (‘oFF’) to have no function associated.
• select parameter ‘Memory of maximum’ (‘MAX’) to visualize on
Display hold display the memory of maximum reading.
• select parameter ‘Memory of minimum’ (‘MIn’) to visualize on
‘Tare’ function display the memory of minimum reading.
• select parameter ‘Display hold’ (‘hoLd’) to maintain the actual
reading ‘on hold’. Open the external contact to free the reading.
Decimal point 0
Parameters ‘Memory of maximum’ (‘MAX’), ‘Memory of minimum’
(‘Min’) and ‘Display hold’ (‘hoLd’) show on display a value which is
Decimal point 1 not the actual measured input signal, therefor the values for this
parameters will be shown in flash mode, indicating that the actual
value is not the actual input value.
Decimal point 2
• select ‘Tare function’ (‘tArE’) to activate a tare to the signal. The
actual signal will read ‘0’. The calibration is not changed.
Decimal point 3 • select parameter ‘Decimal point 0’ (‘dP.0’) to remove the decimal
point on display.
• select parameter ‘Decimal point 1’ (‘dP.1’) to activate the decimal
Second scaling
point at position XXX.X

18
 FEMA ELECTRÓNICA . Series C . C40-D

1.29 Configuration menu (cont.)

• select parameter ‘Decimal point 2’ (‘dP.2’) to activate the decimal
point at position XX.XX
• select parameter ‘Decimal point 3’ (‘dP.3’) to activate the decimal
point at position X.XXX
Parameters ‘Decimal point 0’ (‘dP.0’)and similar ‘dP.1’, ‘dP.2’ and
dP.3’ control which decimal point is on. When the external contact
closes, the decimal point selected lights on and the decimal point
that was activated before will power off. When the external contact
opens, the previous decimal point powers on again while removing
the new decimal point. Display does not show in flash mode when
decimal point functions are activated.
• select parameter ‘Second scaling’ (‘ScL.2’) to activate the second
scaling configured at menu ‘Tools’ (‘TooL’) \ ‘Second scaling’. The
activation of the ‘Second scaling’ function is accepted for all signal
input ranges based on AC input signals, DC input signals, process
and resistances. Display does not show in flash mode when second
scaling function is activated. For more information on the ‘Second
scaling’ seer section 1.25
Tools Option 1 disabled

relay
1.29.7 Menu ‘Tools’
the parameter ‘420’ gives
The ‘Tools’ (‘tooL’) menu contains multiple configuration options of
access to the calibration the instrument.
analog output menu for the analog out-
put. See section 2.2 for • select at the ‘Option 1’ (‘out.1’) parameter the module type
more information. installed at the ‘Opt.1’ (see section 2) slot. Select ‘relay’ (‘rELE’)
Modbus RTU
for the relay output module ‘A1’. Select ‘analog output’ (‘420’)
for the analog output module ‘M1’. Select ‘Modbus RTU’ (‘r.485’)
for the Modbus RTU serial output module ‘S1’.
Note : the parameter ‘420’ gives access to the calibration menu
for the analog output module. See section 2.2 for more informa-
Steps
tion about this menu and the calibration.

• the ‘Steps’ (‘StEP’) parameter allows to configure a defined

minimum step change on the reading. Reading will change in
steps of 1, 2, 5, 10, 20 or 50 counts.

• the ‘Average filter’ (‘AVr’) function allows to reduce reading

oscillations due to noisy signals, by applying a recursive filter on
the reading values. The strength of the recursive filter is a value
configurable between ‘0’ and ‘100’. Value ‘0’ means ‘filter dis-
Average filter 0 to 100 abled’. Filter strength increases with the value. Increasing the fil-
ter strength, increases the response time of the instrument.

• the ‘Offset reading’ (‘oFFS’) parameter allows to configure a

Offset reading
fixed number of counts to be subtracted from the reading. Ac-
cepts values from -500 to 500. This function allows to compen-
sate for the possible error introduced by the resistance of the
signal wires when measuring Pt probes, Ni probes or resistances.
For more information see section 1.22

19
FEMA ELECTRÓNICA . Series C . C40-D

1.29 Configuration menu (cont.)

• the ‘second scaling’ (ScL.2’) function allows to configure the
reading associated to the ‘second scaling’, which can be activated
Second scaling Decimal point by controlling a contact at the ‘external control’. For more infor-
mation on the ‘second scaling’ function see section 1.25.
• the ‘Eco mode’ (‘Eco’) is a function to reduce consumption of
Display Low
the instrument, by powering off the display when display is not
needed. For consumption data in ‘Eco’ mode see section 1.8. For
more information in ‘Eco’ mode see section 1.23. The operation
Display High
of the ‘Eco’ mode is explained below :
- the waiting time until display is powered off display is con-
figurable from 5 to 255 seconds.

‘Eco’ mode 5 to 255 seconds - after the configured time is over, without interaction from
the operator, the display powers off the reading. It will not
power off if the instrument is into ‘configuration menu’ or in
‘fast access’ menu or there is an active alarm.
- the instrument will power on the display when an alarm acti-
vates (either alarm 1 or 2) and will remain on if alarm remains
active.
- the instrument will power on the display if the operator
press any front key.
1º resolution • at the ‘Temperature resolution’ (‘t.rES’) menu select the reso-
Temperature lution to 1º or 0.1º. This resolution applies to temperature probes
resolution 0.1º resolution
Pt100, Pt500, Pt100, Ni100, Ni200, Ni1000, PTC and NTC. For
thermocouple probes resolution is fixed to 1º.
Degrees Celsius
• at the ‘Degrees’ (‘dEG’) menu select the temperature values to
Degrees
Degrees Fahrenheit be read in ºC (degrees Celsius) or in ºF (degrees Fahrenheit).
• at the ‘Alpha’ (‘ALPh’) menu select the value for the alpha pa-
Alpha 0.0385 rameter to ‘0.0385’ o ‘0.0390’. This parameter affects to Pt probes
Alpha (Pt100, Pt500, Pt1000) and it depends on the probe.
Alpha 0.0390
• at the ‘Cold junction’ (‘cJc’) menu select ‘on’ to activate the
thermocouple cold junction compensation. Select ‘off’ to deac-
Thermocouple cold tivate.
junction compensation
Cold junction
‘on’ or ‘off’ • the ‘AC deadband’ (‘d.bnd’) parameter applies only to AC mea-
suring ranges. The True RMS measures deal with a considerable
noise when signal is near to 0. This parameter allows to set a
Deadband for AC signals
value between 0 and 100 (by default is 20) to empirically set the
‘AC deadband’
signal level at which reading will be forced to 0, when signal is
below that level.
Minimum
• at the ‘Brightness’ (‘LIGh’) menu select between 5 levels of
Brightness brightness intensity for the display. It adapts the instrument to
environments with higher or lower brightness is needed or to
Standard adapt the intensity to other meters in the area.
• the ‘Version’ (‘VEr’) menu informs about the firmware version
installed on the instrument.
Maximum • at the ‘Password’ (‘PASS’) menu select a 4 digit code to block
access to the ‘configuration menu’. Use the ‘Password’ function
to prevent modifications on the instrument configuration. To ac-
Version tivate the ‘Password’ select ‘on’ and enter the numerical code.
The code will be requested when trying to access the ‘configura-
tion menu’. The ‘fast access’ menu is not blocked by the ‘Pass-
Password word’.

20
 FEMA ELECTRÓNICA . Series C . C40-D

1.29 Configuration menu (cont.)

• At the ‘Factory reset’ (‘FAct’) menu, select ‘yes’ to load the de-
fault factory configuration for the instrument. See section 1.32
for a list of values at default factory configuration.
Factory reset

1.29.8 Configuring the options

Option 1 Analog output Display Low
configuration* At the ‘Option 1 configuration’ (‘out.1’) configure the module in-
(*value selected stalled at slot Opt.1. This menu varies depending on the module in-
at /Tool/Out.1) stalled (relay, analog output or serial output). The type of module
Display High
installed is indicated at the menu ‘Tools’ / ‘out.1’.
• ‘Analog output’ (‘420’) : select ‘analog output’ (‘420’) at ‘Tools’
/ ‘out.1’ / ‘420’, to have the analog output configuration at this
Modbus RTU Address 1 to 247
menu entry. Introduce the reading value associated to 4 mA (Dis-
play Low (‘d.Lo’)) and the reading value associated to 20 mA (Dis-
play High (‘d.Hi’))
Speed Kbps
• ‘Modbus RTU’ (‘r.485’) : select ‘Modbus RTU’ (‘r.485’) at ‘Tools’
/ ‘out.1’ / ‘r.485’, to have the serial output configuration at this
menu entry. Configure the address for the instrument (parameter
Format ‘Address 1 to 247’ (‘Addr’)), the bus speed (parameter ‘Speed
kbps’ (‘bAud’)) configurable to 9.600 bps or 4.800 bps, and the
bus format (parameter ‘Format’ (‘bItS’)) configurable at 8n1, 8E1,
8o1 or 8n2.
The slot at Opt.2 allows only for a relay module, and configuration is
done through the menu entry ‘Alarm 2’ (‘ALr2’).

21
FEMA ELECTRÓNICA . Series C . C40-D

1.30 Full configuration menu

Press ‘SQ’ (<) for 1 second to access the ‘Configuration menu’. See
Pt100 (2 wires)
section 1.29 for a description of each menu entry.
RTD probes
Pt100 (3 wires)
600 Vac range
Input AC signals Pt500
200 Vac range
Pt1000
20 Vac range
Ni100
2 Vac range
Ni200
200 mVac range
Ni1000
60 mVac shunt range

5 Aac range
res.
20 mAac range at 25º
NTC probes
beta

KTY 121 family

±600 Vdc range
PTC probes
DC signals KTY 210 and 220 families
±200 Vdc range

±20 Vdc range range 0 to 5 K

Resistance
±2 Vdc range range 0 to 50 K

±200 mVdc range

Potentiometer
±60 mVdc range

±5 Adc range
Frequency
±20 mAdc range

4/20 mA range
Scaling Decimal point
Process
0/10 Vdc range

Display Low
thermocouple K
Thermocouples
thermocouple J Display High

thermocouple E

thermocouple N
Alarm 1 Alarm type
thermocouple L

thermocouple R
Setpoint
thermocouple S

thermocouple B
Hysteresis
thermocouple T

thermocouple C

22
 FEMA ELECTRÓNICA . Series C . C40-D

1.30 Full configuration menu (cont.)

Alarm 2 Alarm type Tools Option 1 disabled

relay
Setpoint
the parameter ‘420’ gives
access to the calibration
analog output menu for the analog out-
Hysteresis put. See section 2.2 for
more information.
Modbus RTU

Key UP Setpoint 1
(fast access)

Steps
Setpoint 2

Memory of max.

Memory of min.

Function ‘tare’

Average filter 0 to 100

External control Disabled

Offset reading

Memory of max.

Second scaling Decimal point

Memory of min.

Display Low
Display hold

Display High
Function ‘tare’

Decimal point 0
‘Eco’ mode 5 to 255 seconds

Decimal point 1
1º resolution
Temperature
Decimal point 2 resolution 0.1º resolution

degrees Celsius
Decimal point 3
Degrees
degrees Fahrenheit

Second scaling

23
FEMA ELECTRÓNICA . Series C . C40-D

1.30 Full configuration menu (cont.)

Alpha 385
Alpha
Alpha 390

Thermocouple cold
junction compensation
Cold junction
‘on’ or ‘off’

Deadband fo AC signals
‘AC deadband’

Minimum
Brightness

Standard

Maximum

Version

Password

Factory reset

Analog output Display Low

Option 1
configuration*
(*value selected
at /Tool/Out.1) Display High

Modbus RTU Address 1 to 247

Speed Kbps

Format

24
 FEMA ELECTRÓNICA . Series C . C40-D

1.31 Precautions on installation 1.33 Warranty

This instrument is warranted against all manufacturing defects for a period
Risk of electrical shock. Instrument terminals can be connected
of 24 months, as requested by the European legislation. This warranty does
to dangerous voltage.
not apply in case of misuse or accident, and the scope of the warranty is lim-
ited to repair of the instrument, not being the manufacturer responsible for
Instrument protected with double isolation. No earth connection
additional damages or additional costs. Within the warranty period and after
required.
examination by the manufacturer, the unit will be repaired or substituted
when found to be defective.
Instrument conforms to CE rules and regulations. Extended warranty available at www.fema.es / docs / 4153_Warranty1_
en.pdf
This instrument has been designed and verified conforming to the 61010-1 CE Security
Regulation, for industrial applications. Installation of this instrument must be performed
by qualified personnel only. This manual contains the appropriate information for the in-
1.34 CE declaration of conformity
stallation. Using the instrument in ways not specified by the manufacturer may lead to a Manufacturer FEMA ELECTRÓNICA, S.A.
reduction of the specified protection level. Disconnect the instrument from power before Altimira 14 - Pol. Ind. Santiga
starting any maintenance and / or installation action. E08210 - Barberà del Vallès
The instrument does not have a general switch and will start operation as soon as power is BARCELONA - SPAIN
connected. The instrument does not have protection fuse, the fuse must be added during www.fema.es - info@fema.es
installation. Products C40-D
The instrument is designed to be panel mounted. An appropriate ventilation of the in-
strument must be assured. Do not expose the instrument to excess of humidity. Maintain The manufacturer declares that the instruments indicated comply with the
clean by using a humid rag and do NOT use abrasive products such as alcohols, solvents, directives and rules indicated below.
etc. General recommendations for electrical installations apply, and for proper functional- Electromagnetic compatibility directive 2014/30/EU
ity we recommend : if possible, install the instrument far from electrical noise or magnetic Low voltage directive 2014/35/EU
field generators such as power relays, electrical motors, speed variators, ... If possible, do ROHS directive 2011/65/EU
not install along the same conduits power cables (power, motor controllers, electrovalves, WEEE directive 2012/19/EU
...) together with signal and/or control cables. Before proceeding to the power connection, Security rules EN-61010-1
verify that the voltage level available matches the power levels indicated in the label on
Instrument Fixed, Permanently connected
the instrument. In case of fire, disconnect the instrument from the power line, fire alarm
Pollution degree 1 and 2 (without condensation)
according to local rules, disconnect the air conditioning, attack fire with carbonic snow,
Isolation Double
never with water.
Category CAT-III up to 300V
CAT-II up to 600V (only with ‘Pollution degree 1’)
1.32 Factory configuration Electromagnetic compatibility rules EN-61326-1
EM environment Industrial
Range 600 Vac CISPR 11 Instrument Class A & Class B Group 1
Scaling and decimal point 0/600 Vac = 0/600
Alarms 1
Type alarm as maximum For a detailed declaration see document www.fema.es / docs / 4152_CE-
Setpoint 1000 Declaration_C40-D_en.pdf
Hysteresis 0 counts
Alarm 2
Barberà del Vallès, January 2017
Type alarm as maximum
Xavier Juncà - Product Manager
Setpoint 1000
Hysteresis 0 counts
External control off
Fast access all off
Tools According to directive 2012/19/EU, electronic equip-
Option.1 off (retains last configuration value) ment must be recycled in a selective and controlled
Step 1 way at the end of its useful life.
Average 0
Offset reading 0
Second scaling 0/600
‘Eco’ mode off
Temperature resolution 1º
Degrees ºC
Alpha 385
cJc on
AC deadband 20
Brightness 3
Password off
Option 1 configuration
Option analog output 0/100.0=4/20 mA
Option serial Modbus RTU 9600 bps, address 1, format 8n1

Jumpers ‘S’ selected for 600 Vac

Jumper ‘T’ selected for ‘EK’ external control function

25
FEMA ELECTRÓNICA . Series C . C40-D

2. Output and control modules

2.1 Modules A1 and A2 (relay output) 2.2 Module M1 (analog output)
The A1 (and A2) modules offer 1 relay output to be installed at slot The M1 module offers 1 analog output at 4/20 mA, isolated, to be
Opt.1 (module A2 at Opt.2). The relay installed at Opt.1 is controlled installed at slot Opt1.
by alarm 1, and is configured from the ‘Alarm 1’ (‘Alr1’) menu ex-
The 4/20 mA output signal is fully scalable, both with positive and
plained at section 1.29.3. The relay installed at Opt.2 is controlled
negative slopes, and is proportional to the reading of the instrument.
by alarm 2, and is configured from the ‘Alarm 2’ (‘Alr2’) explained
The mA output can be connected to work in active loop (the module
at section 1.29.3. Relay with 3 contacts (Common, Normally closed,
provides the power of the loop) or passive mode (the power of the
Normally open) accepting voltages up to 250V @8A.
loop is not provided by the instrument)
The A1 and A2 modules can be ordered installed in to a Series C in-
Connections
strument or standalone for later installation, as they do not require
soldering or special configuration.. For an active 4/20 mA loop, connect terminal A (‘Vexc +15 Vdc’) as
current output and terminal B (‘Signal in mA’) as return of current.
For a passive 4/20 mA loop, connect terminal B (‘signal in mA’) as
current output and terminal C (‘GND’) as return of current.

Type of relay 3 contact relay (NC, NO, common) Output signal 4/20 mA (active and passive)
Current maximum 8 A per relay (resistive load) Active output connect terminal A (+15 Vdc) and B (mA)
Voltage maximum 250 Vac continuous RL <350 R
when switching power lines, with overvoltage category 3, maximum switch-
ing voltage is 150Veff to comply with CE safety requirements. Passive output connect terminal C (GND) and B (mA)
RL < 700 R
Isolation 3500 Veff
Accuracy <0.5% FS
Type of terminal plug-in screw terminal, pitch 5.08 mm
Slots allowed Opt.1 for A1 module Response time <100 mSeg. + meter response time
Opt.2 for A2 module Isolation 1000 Vdc
Slots allowed Opt.1
Opt.2 Opt.1 Opt.1
Com. Com. Vexc
NO NO 4/20 mA
NC NC Common

G H I A B C A B C

Signal Power Signal Power

Terminal A, G Common Terminal A Vexc +15 Vdc

Terminal B, H NO - Normally open Terminal B Signal in mA
Terminal C, I NC - Normally closed Terminal C Common

26
 FEMA ELECTRÓNICA . Series C . C40-D

2.3 Module S1 (Modbus RTU)

Installing, calibrating and configuring a M1 module The S1 module offers 1 Modbus RTU serial output, isolated, to be
installed at slot Opt1.
If the M1 module has been acquired installed in the instrument, then
the module has been factory calibrated. In this case you can jump Configuration is done from the front keypad, through the configura-
directly to point 7 below. tion menu. The instrument must be informed that there is a Mod-
bus RTU module at slot.1 and this is done at the configuration menu
If the M1 module has been acquired separately and installation is ‘Tool’ \ ‘out.1’ (see section 1.29.7). Then configure the bus param-
needed, follow the next steps : eters at the configuration menu ‘out.1’ \ ‘r485’ (see section 1.29.8).
1. Access the instrument and install the M1 module at slot Opt.1 The S1 module can be ordered installed in to a Series C instrument
(see section 1.26). or standalone for later installation, as it does not require soldering or
2. From the ‘Configuration menu’ go to ‘tool’ \ ‘out.1’ and select special configuration.
value ‘420’ (see section 1.29.7) to inform the instrument that there
is a M1 analog output module installed.
From this point you will need the calibration sheet provided together
with the module M1. This sheet shows the values for parameters
‘cAL.y / 4mA’ and ‘cAL.y / 20mA’.
3. When selecting ‘420’ the instrument shows ‘cAL.n’. (‘Do not cali-
brate’). Press ‘UP’ (5) to read ‘cAL.y’ (‘Calibrate’).
4. When selecting ‘cAL.y’ (‘Calibrate’) select ‘4 mA’. Display shows
a number. Introduce the value of the ‘cAL.y / 4mA’ indicated at the
calibration sheet provided together with the M1 module. Increase
the numerical value with key ‘UP’ (5) and reduce the value with
Protocol Modbus RTU
key ‘LE’ (3). Validate the value with key ‘SQ’ (<). See below an
image of the configuration menu. Bus type RS-485, configurable for 9.600 or 4800 bps
5. Repeat with the ‘20 mA’ parameter, and update with the value Addresses 1 to 247
‘cAL.y / 20mA’ indicated at the calibration sheet. Validate with key
Formats configurable 8n1, 8e1, 8o1, 8n2
‘SQ’ (<), and press key ‘LE’ (3) several times to exit the ‘Configu-
ration menu’. Function code 4 read register
6. The instrument will reboot when exiting the menu. The analog Registers 0 reading value (16 bits)
output is calibrated. 1 number of decimals (16 bits)
Note : if you do not have the calibration sheet which was attached Errors 0 function not supported
to the M1 module at manufacturing time, you can use a miliamme- 1 register not accessible
ter to measure the mA at the output loop. Then access parameters
Isolation 1000 Vdc Opt.1
‘cAL.y / 4mA’ and ‘cAL.y / 20mA’ and adjust the calibration value by B
checking the miliammeter value. Slots allowed Opt.1 A
At this point the module is installed and calibrated. Now configure GND
the reading associated to the output signal 4 mA and 20 mA.
B A G
7. Configure the reading associated to the 4 mA output signal and
the reading associated to the 20 mA output signal, at the configu-
ration menu ‘out.1’ \ ‘420’ (see section 1.29.8).

Tools Option 1 Disabled

Signal Power
relay

Terminal B B
analog output Do not calibrate Terminal A A
Terminal G GND
Calibrate

Modbus RTU

27
FEMA ELECTRÓNICA . Series C . C40-D

3. Other options
3.1 Option NBT
Instruments without front key-
pad. To configure the instrument,
remove the meter from the panel
and remove the front filter. Inter-
nal press buttons for configuration
are accessible. Optionally, request
the instrument preconfigured
from factory.
Without front keypad

3.2 Option 65

O-ring for IP65 front protection

3.3 Option ‘customized’

Instruments can be adapted to your

needs :
• improved technical specifications
• custom configurations
• special functions
• ...

28
 FEMA ELECTRÓNICA . Series C . C40-D

4. Accessories
4.1 Adapter DRA-M 4.4 WME wall housing
Adapter for DIN rail mount, for Wall mount housing. Together
Series C with the KIP protector, offers a
full IP65 protection. For Series C
of panel meters.

4.2 Adapter KA96 4.5 THM benchtop housing

Adapter 96 x 96 mm for 96 x 48 mm Benchtop housing for Series C
instruments. and of panel meters. Handle with
three selectable positions. Power
connector with manual switch
and fuse holder.

4.3 Protector KIP 4.6 Set of units (included)

Removable front cover for addi- Set of labels ‘Vdc’, ‘Vac’, ‘Adc’, ‘Aac’,
tional mechanical and IP65 front ‘mVdc’, ‘mVac’, ‘mAdc’, ‘mAac’, ‘%’,
protection. ‘ºC’, ‘ºF’, ‘ph’, ‘m’, ‘cm’, ‘mm’, ‘bar’,
‘psi’, ‘Pa’, N’, ‘Ω’, ‘KΩ’, ‘W’, ‘kW’,
‘MW’, ‘kV’, ‘kA’,
‘m/min’, ‘rpm’, ‘l’
(1 set included with each instru-
ment)

29
FEMA ELECTRÓNICA . Series C . C40-D

Notes

30
 FEMA ELECTRÓNICA . Series C . C40-D

Notes

31