DOL 534 • DOL 539

Climate Controller
Circuit Diagrams and Cable Plans

English For other language variants of this document we refer to:

Español Para otras variantes del idioma de este documento, visite:
Français Pour les versions dans d'autres langues de ce document veuillez consulter:
http://docs.skov.com/1017

611861 • 2022-09-30 Software version 7.8

 DOL 534 • DOL 539

Product and Documentation Changes

SKOV A/S reserves the right to change this document and the product herein described without further notice.
In case of doubt, please contact SKOV A/S.
The date of change appears from the front and back pages.
IMPORTANT
Notes concerning alarm systems
Breakdowns, malfunctions or faulty settings may cause substantial damage and financial losses when regulat-
ing and controlling the climate in a livestock house. It is therefore essential to install a separate, independent
alarm system that monitors the house climate concurrently with the climate and production controller. According
to EU-directive No. 98/58/EU, an alarm system must be installed in all mechanically ventilated houses.
We would like to draw your attention to the fact that the product liability clause of general terms and conditions
of sale and delivery specifies that an alarm system must be installed.

Note
• All rights belong to SKOV A/S. No part of this manual may be reproduced in any manner whatsoever without
the expressed written permission of SKOV A/S in each case.
• All reasonable efforts have been made to ensure the accuracy of the information contained in this manual.
Should any mistakes or imprecise information occur in spite of this, SKOV A/S would appreciate being noti-
fied thereof.
• Irrespective of the above, SKOV A/S shall not accept any liability with regard to loss or damage caused or
alleged to be caused by reliance on any information contained herein.
• Copyright by SKOV A/S.

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1 Product description ....................................................................................................................................... 7

1.1 LPV (Low Power Ventilation) .................................................................................................... 7
1.2 Tunnel ......................................................................................................................................... 8
1.3 Combi-Tunnel............................................................................................................................. 9
1.4 Tunnel-Plus ................................................................................................................................ 9

2 Mounting guide............................................................................................................................................. 10
2.1 Mounting of controller together with emergency opening .................................................. 10
2.2 Mounting of house controller ................................................................................................. 10
2.3 Mounting of auxiliary contactor ............................................................................................. 11
2.4 Mounting of extra 24 V power supply .................................................................................... 12
2.4.1 Power supply 24 V, 2.1 A in box ................................................................................................ 12
2.4.2 Power supply 24 V, 2.1 A, printed circuit board ......................................................................... 12
2.5 Mounting of emergency opening ........................................................................................... 12
2.6 Mounting of climate sensors .................................................................................................. 13

3 Installation guide.......................................................................................................................................... 14
3.1 Electrical connection............................................................................................................... 14
3.1.1 Connection of cables ................................................................................................................. 14
3.1.2 Connection of backup units to controller.................................................................................... 14
3.1.3 Setting the supply voltage on the power supply......................................................................... 14
3.1.4 Connection of extra 24 V power supply ..................................................................................... 15
3.1.5 Connection of seven or more I/O modules ................................................................................ 16
3.2 Connection via the installation menu of the controller........................................................ 17
3.3 Automatic registrations of of extra I/O modules................................................................... 17
3.4 Setup of modules..................................................................................................................... 18
3.5 Positioning of jumper .............................................................................................................. 18
3.6 Printing the Installation Setup via the PC simulator ............................................................ 19
3.7 Setting CAN address ............................................................................................................... 20
3.8 Setting CAN termination jumpers .......................................................................................... 21
3.9 Setting CAN protocol jumper.................................................................................................. 22

4 Basic cable plans ......................................................................................................................................... 23

4.1 Systems without emergency opening ................................................................................... 23
4.2 Systems with ON/OFF emergency opening .......................................................................... 23
4.3 Systems with temperature-controlled emergency opening................................................. 23
4.4 Winch motors ........................................................................................................................... 24
4.5 Cable dimensions for 24V DC depending on length ............................................................ 25
4.6 MultiStep (with internal fan speed controller)....................................................................... 26
4.7 MultiStep (with external fan speed controller) ...................................................................... 26
4.8 Dynamic MultiStep (with LPC) ................................................................................................ 27
4.9 Three-phase fans ..................................................................................................................... 27
4.10 One-phase fans ........................................................................................................................ 28
4.11 BF 50 wall fan .......................................................................................................................... 29
4.12 DA 1700 wall fan ...................................................................................................................... 30
4.13 DA 1700 LPC MultiStep ........................................................................................................... 31
4.14 DA 1700 ON/OFF wall fan MultiStep ...................................................................................... 31
4.15 Fan speed controller, door opening, heating, cooling and air circulator .......................... 32
4.16 Sensors, water meter, 24-hour clock, light and energy meter............................................. 33

Circuit Diagrams and Cable Plans

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5 Circuit diagrams ........................................................................................................................................... 34

5.1 General information about circuit diagrams ......................................................................... 34
5.1.1 Color code.................................................................................................................................. 34
5.1.2 Power supply isolator................................................................................................................. 34
5.1.3 Letter code ................................................................................................................................. 34
5.1.4 Example of connection............................................................................................................... 35
5.1.5 Connection of DC supplied coil.................................................................................................. 36
5.1.6 Overview of connection terminals .............................................................................................. 37
5.1.6.1 Power supply (-K1.1) ................................................................................................................. 37
5.1.6.2 Main module (-K1.2) .................................................................................................................. 37
5.1.6.3 I/O module (-K1.3) ..................................................................................................................... 37
5.1.6.4 Triac module (-K1.4) .................................................................................................................. 37
5.1.6.5 Loop modules (-K1.5) and (-K1.6) ............................................................................................. 37
5.2 Supply voltage for I/O module /main module........................................................................ 38
5.3 Alarm......................................................................................................................................... 38
5.4 Emergency opening................................................................................................................. 39
5.4.1 ON/OFF - medium / large / xtra large ........................................................................................ 39
5.4.2 Temperature controlled - medium and large.............................................................................. 40
5.4.3 Emergency opening with Mini-UPS ........................................................................................... 40
5.5 Air circulator............................................................................................................................. 41
5.5.1 One-phase / Three-phase.......................................................................................................... 41
5.5.2 0-10V analog.............................................................................................................................. 41
5.5.3 Chill Unit..................................................................................................................................... 42
5.6 Wall fan ..................................................................................................................................... 42
5.6.1 BF 50 LPC ON/OFF .................................................................................................................. 42
5.6.2 BF 50 LPC VAR ........................................................................................................................ 43
5.6.3 BF 50 ON/OFF EL .................................................................................................................... 43
5.6.4 BF 50 ON/OFF AIR ................................................................................................................... 44
5.6.5 DA 1700 LPC 1x230 V .............................................................................................................. 44
5.6.6 DA 1700 LPC 3x400 V or 3x230 V ............................................................................................ 45
5.6.7 DA 1700 3x400 V or 3x230 V .................................................................................................... 45
5.7 Fan speed controller................................................................................................................ 46
5.7.1 Internal fan speed controller, two parallel fans .......................................................................... 46
5.7.2 DOL 31 fan speed controller ...................................................................................................... 46
5.7.3 Frequency converter .................................................................................................................. 47
5.7.4 Frequency converter DA 74CV stepless / Dynamic MultiStep................................................... 47
5.7.5 LPC motor controller .................................................................................................................. 48
5.7.6 LPC / DA 74CO ON/OFF / Dynamic MultiStep .......................................................................... 48
5.7.7 LPC / DA 74CV stepless / Dynamic MultiStep........................................................................... 49
5.8 Winch motors, all positions .................................................................................................... 50
5.8.1 DA 74CO ON/OFF ..................................................................................................................... 50
5.8.2 DA 74CV / BC stepless.............................................................................................................. 50
5.8.3 DA 75A ON/OFF 24 V................................................................................................................ 51
5.8.4 DA 75A stepless 24 V ................................................................................................................ 51
5.8.5 DA 75A stepless 230 V without potentiometer........................................................................... 52
5.8.6 DA 75A stepless 230 V .............................................................................................................. 52
5.8.7 Connection of two or several DA 75A 230 V.............................................................................. 53
5.8.8 DA 174 stepless 24 V ................................................................................................................ 54
5.8.9 DA 175 ON/OFF 24 V ................................................................................................................ 54
5.8.10 DA 175 stepless 24 V ................................................................................................................ 55
5.8.11 DA 175 ON/OFF 230 V .............................................................................................................. 55
5.8.12 DA 175 230 V stepless .............................................................................................................. 56
5.9 MultiStep, FreeRange (houses with pop holes) .................................................................... 57
5.9.1 Air outlet DA 74CO ON/OFF fan / stop relay ............................................................................. 57
5.9.2 Air outlet with several fans / stop relays..................................................................................... 58
5.9.3 Pop holes detection ................................................................................................................... 59
5.10 Door opening............................................................................................................................ 59

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5.11 Door opening using DA 175 ................................................................................................... 60

5.12 Room/Floor heating ................................................................................................................. 61
5.12.1 0-10V analog 230V with slave relay........................................................................................... 61
5.12.2 Relay heat ON/OFF ................................................................................................................... 61
5.12.3 Heating 24V ............................................................................................................................... 62
5.12.4 Floor heating unit 0-10 V............................................................................................................ 62
5.12.5 ACU Blow heater / air circulator 24 V ........................................................................................ 63
5.12.6 ACU Blow heater / air circulator 230 V ...................................................................................... 63
5.12.7 IBH Blow heater ......................................................................................................................... 64
5.13 Sensors..................................................................................................................................... 64
5.13.1 DOL 10/DOL 12 temperature sensor ......................................................................................... 64
5.13.2 DOL 114 temperature / humidity sensor .................................................................................... 65
5.13.3 DOL 53 NH3 ammonia sensor................................................................................................... 65
5.13.4 DOL 119 CO2 sensor ................................................................................................................ 66
5.13.5 Sub-pressure gauge .................................................................................................................. 66
5.13.6 Current sensor ........................................................................................................................... 67
5.13.7 Dynamic Air sensor.................................................................................................................... 67
5.13.8 Auxiliary sensor.......................................................................................................................... 68
5.13.9 DOL 58 weather station ............................................................................................................. 68
5.14 Cooling...................................................................................................................................... 69
5.14.1 Humidification / Soaking ............................................................................................................ 69
5.14.2 High-pressure pump 1x230V / 3x230V ...................................................................................... 69
5.14.3 High-pressure cooling pump 3x400V......................................................................................... 70
5.14.4 High-pressure pump 2 zone / shared between several controllers............................................ 70
5.14.5 Tunnel cooling 1x230V / 3x230V ............................................................................................... 71
5.14.6 Tunnel cooling 0-10V ................................................................................................................. 71
5.15 Water meter .............................................................................................................................. 72
5.16 24-hour clock/Interval timers .................................................................................................. 72
5.17 Catching function key / press................................................................................................. 73
5.18 Energy meter ............................................................................................................................ 73
5.19 Connection to equal pressure system................................................................................... 74
5.19.1 MultiStep .................................................................................................................................... 75
5.19.2 Stepless ..................................................................................................................................... 75

Circuit Diagrams and Cable Plans

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1 Product description
This document contains a collection of cable plans and circuit diagrams to be used for installing a controller in
any livestock house. The document may therefore contain sections that are not applicable to the livestock house
in question.

1.1 LPV (Low Power Ventilation)

FarmOnline Explorer

Humidity sensor
Temperature sensor
Pressure
sensor

Outside humidity sensor

Auxiliary sensor Outside temperature
sensor

CO2

Alarm
Actuator Wall inlet

NH3
Side mode

Blow heater Stir fan House Cooling

heaters Step 1 Step 2 Step 6 Step 7 Step 16

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1.2 Tunnel
FarmOnline Explorer

Humidity sensor
Temperature sensor
Aux. sensor

Outside humidity sensor

Outside temperature sensor
Pressure
sensor

Tunnel cooling sensor

CO2

Alarm

Tunnel mode

NH3

Blow heater Stir fan House heaters Tunnel cooling Step 1 Step 16

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1.3 Combi-Tunnel
FarmOnline Explorer

Humidity sensor
Temperature
sensor
Temperature sensor
Outside humidity sensor Tunnel cooling sensor
Aux. sensor Outside temperature sensor

Pressure
sensor

Pad cooling
CO2
Wall inlet Front and Rear

Alarm High pressure cooling in tunnel inlet

NH3
Side mode Tunnel mode

Blow heater Stir fan House Tunnel cooling Cooling

heaters
Step 1 Step 2 Step 16 Step 1 Step 16

1.4 Tunnel-Plus
FarmOnline Explorer

Humidity sensor
Auxiliary sensor Temperature sensor

Outside humidity sensor

Temperature sensor Pad alarm temperature sensor
Pressure
sensor

Tunnel cooling sensor

CO2

Alarm

NH3
Side mode Tunnel mode

Blow heater Stir fan House Tunnel cooling Wall inlet Wall fans
heaters

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2 Mounting guide
2.1 Mounting of controller together with emergency opening
Controller
Emergency opening

2.2 Mounting of house controller

1. Place the controller with the display (A) at eye level for the daily user
2. Remember free space around the cabinet:
• 43 cm (B) so that the front panel can be placed on top of the cabinet base during service.
• 10 cm (C) below the cabinet base to enable air cooling.
• 10 cm (D) on the right side for operation of the AUT/MAN (Auto/Manual) change-over switches.

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2.3 Mounting of auxiliary contactor

Contactor or auxiliary relay must not be installed in the controller.

The contactors cause electrical disturbance which can make the controller reset/restart.
Mount the contactors in an external box next to the controller.

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2.4 Mounting of extra 24 V power supply

2.4.1 Power supply 24 V, 2.1 A in box
The extra power supply (A) is mounted at the side or close to the controller.

2.4.2 Power supply 24 V, 2.1 A, printed circuit board

The extra power supply (B) (power supply 24 V 2.1 A, printed circuit board) can be mounted in a pre-existing
extension box together with the I/O module.

2.5 Mounting of emergency opening

See Technical Manual regarding emergency opening.

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2.6 Mounting of climate sensors

• Never use a plug on the DOL 12 temperature sensor as a bad connection here could have disas-
trous results.
• Never use shrink-on sleeves when splicing wires inside the livestock house. Use a contact box.

Placing of sensors inside the house

• Place the sensor in the middle of the livestock house.
• In case of animals on floor the sensor is placed 1 meter over the animals (make sure the animals cannot
reach sensors).

• In cages (poultry) the sensor is placed in the middle of the cage height 100 mm from the edge of the cage.
• When using Tunnel place the DOL 10 tunnel cooling sensor ¼ in the front zone see drawing.

Tunnel cooling sensor

• Remember that temperature, humidity, alarm and emergency sensors should be placed together, if possible
use board for sensors (are available as accessory).
Do not place the sensor Cause
Above housing equipment. The pigs can reach them.
Near cooling system. Water and humidity will affect the sensors.
In a drafty area. Measures the wrong temperature in the live-
So it is directly affected by the air intake. stock house.
Where sunrays can shine on the sensor through windows. Measures a too high temperature. Ventilation
Take into account that the altitude of the sun varies with the level too high.
season/time of day.
Above or in a position where it is otherwise affected by the The heat moves up towards the sensors.
heating system/heating pipe.

Placing of sensors outside the house

• In Combi-Tunnel systems radiation shield must be mounted, in LPV and tunnel systems it is recommended
to mount the radiation shield (available as accessories). Sensor with radiation shield must be placed in the
open air.
• Sensor without radiation shield must be placed on the shady side of the house to avoid the sun. Take into
account that the altitude of the sun varies with the season/time of day.
• As much in the open as possible, but protected from rain and snow.

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3 Installation guide
3.1 Electrical connection
Installation, servicing and troubleshooting of all electrical equipment must be carried out by quali-
fied personnel in compliance with the applicable national and international standard EN 60204-1
and any other EU standards that are applicable in Europe.
The installation of a power supply isolator is required for each motor and power supply to facilitate
voltage-free work on the electrical equipment. The power supply isolator is not included.

3.1.1 Connection of cables

Connect Cables according to the circuit diagrams that correspond to the system.

3.1.2 Connection of backup units to controller

In areas with unstable power supply, one of the following backup units may be mounted in front of
the controller so as to compensate for frequent power failures.

With/without emer- Type of backup unit Comment

gency opening
With emergency Mini UPS for climate con- Supplies the controller in max. 5 min. in the event of
opening troller, backup function power failure.
Without emergency Mini Power Backup Unit, Supplies the controller in 5 min. on average in the
opening 20V 1A event of power failure for max. 0.5 - 3 hours.

3.1.3 Setting the supply voltage on the power supply

Before you connect supply voltage, it is important to set the voltage in the power supply so that it
corresponds to the voltage level in the local house.

1. Set the voltage in the power supply.

2. Connect the supply voltage.
200-230 V Leave the plug in (factory setting)

100-115 V Move the plug to 100-115 V

Fan speed controller modules can only operate at 230 V.

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3.1.4 Connection of extra 24 V power supply

Internal power supply (A) may only be used to supply factory-installed modules.
In case of a greater power consumption than 0.8 A from the loop module (B), an extra power supply (C) must be
used and possibly (D). The A5 minus terminal is connected in parallel (terminal A5 to A5).

+24 V max. 2.1 A +24 V max. 2.1 A +24 V max. 0.8 A

The power supply must be connected to the controller using a multi-conductor cable. Number of conductors in
the multi-conductor cable is determined by the connected products.
The multi-conductor cable is used for input and output signals from the connected products and to the minus
wire of the power supply.

Multi-conductor cable
Multi-conductor cable

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3.1.5 Connection of seven or more I/O modules

A maximum of 10 I/O modules may be connected, of which 2 can be weighing modules.
When 7 or more I/O modules/weighing modules are connected, the flat cable is supplemented by two wires (D)
with a minimum of 1.0 mm2 between the internal power supply (A) and the terminal block on I/O module number
7.

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3.2 Connection via the installation menu of the controller

The connection terminals in the controller are all-purpose, allowing different components to be connected to the
individual terminals. The circuit diagrams in this document should therefore be considered examples only.

The installation menu in the house controller Technical | Installation | Show connection displays pre-
cisely which terminals a component should be connected to.

24 V DC power supply, ground terminal/minus terminal clamp for sensor and feedback is not displayed.

Displayed on I/O module including jumper.

ON = Emergency opening can override relay so inlet
opens.
OFF = Factory setting. Emergency opening cannot
override relay.
AI = Analogue input.
DI = Digital input
DOL 12 = DOL 12 input

Displayed on I/O module.

Pull-down = A 1 KΩ pull-down resistor must be mounted be-
tween the 0-10 V input and ground/minus termi-
nal.
Pull-up = A 10 KΩ pull-up resistor must be mounted be-
tween the 0-10 V input and + 10 V.

3.3 Automatic registrations of of extra I/O modules

The controller detects automatically if an extra I/O module, silo weighing box or external box is mounted.
If no other module is installed on the address, it will be installed.
In rare cases, it may be necessary to select another I/O module type, for example, if an old I/O module type has
been used.

The registration is displayed in the controller menu

Technical | Installation | Manual installation | Additional I/O
modules.

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3.4 Setup of modules

Carry out setup of main module and selection of I/O modules
according to the requirements of the house controller in the
Technical | Installation | Run installation or Manual in-
stallation menu.

The terminals B2-A, B2-B, B15-A and B15-B can be set up to

either 0-10V input or output depending on how many are re-
quired of each type.

Please note that if the setup of the main module is changed

after the components have been selected, the controller may
move around on the connections.

B2-A B2-B B15-A B15-B

11 in/2 out Input Input Input Input
9 in/4 out Input Output Input Output
7 in/6 out Output Output Output Output

3.5 Positioning of jumper

The jumper is only present on I/O module type 3.

AI DI DOL 12

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3.6 Printing the Installation Setup via the PC simulator

The software for the house controller is also available as a simulator variant for installation on a PC.
Once the installation menu has been set up using the PC simulator and the user has been into Show connec-
tion, the setup can be saved as a file separated by a semicolon on the PC. The file thus contains a list of the in-
stalled components and the connection terminals to which they are to be connected in the house controller.

The file can be opened using MS Excel or a text editor

and be printed in the usual way.

Open the PC simulator and select the File/System set-

tings menu.

Choose a location for the setup file to be saved.

Path to USB drive: Corresponds to the house com-
puter's filing of e.g. log files and setup files on a USB
flash drive.
Can be set in the PC simulator to save on a USB flash
drive or locally on the PC.
Folder: You can also choose to save the file in a folder.
Save the file using the name: ConnectionList.csv.

Each time the user goes into the Technical | In-

stallation | Show connection menu, the PC simulator
saves a version of the current setup of the file.
If the file already exists, it will be overwritten.
There may only be one ConnectionList on the same
USB stick.

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3.7 Setting CAN address

Each I/O module must have a specific CAN address so that the controller can communicate with it. The address
of the individual module corresponds to the address in the controller’s Technical | Installation | Manual
installation | Additional I/O modules menu.

Set the I/O Modules' Rotary switches as follows:

Module 1 Type 15 10RL 8AI 8AO Address=1
Module 2 Type 15 10RL 8AI 8AO Address=2
Module 3 Type 15 10RL 8AI 8AO Address=3
Module 4 Type 15 10RL 8AI 8AO Address=4

I/O module

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3.8 Setting CAN termination jumpers

The modules are controlled via CAN bus communication. To obtain a safe communication between the mod-
ules, it is important that the CAN termination jumpers are set correctly. The jumper must be ON on the module
where communication ends.
Example of the setting of a CAN termination jumper on the main module.

Example of the setting of CAN termination jumpers on the main module and two I/O modules.

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3.9 Setting CAN protocol jumper

CAN protocol jumpers are factory-set to CANopen.

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4 Basic cable plans

1. Select the basic cable plan suitable for the system’s emergency opening.
2. Select cables for the remaining components based on the other cable plans.

4.1 Systems without emergency opening

OUTSIDE SERVICE ROOM

DOL 12

LIVESTOCK Controller
HOUSE Alarm system

DOL 114

4.2 Systems with ON/OFF emergency opening

OUTSIDE SERVICE ROOM

DOL 12

Controller
LIVESTOCK Emergency opening
Alarm system
HOUSE

DOL 114

4.3 Systems with temperature-controlled emergency opening

OUTSIDE SERVICE ROOM

DOL 12

LIVESTOCK Controller
Emergency opening
HOUSE Alarm system

DOL 114

DOL 12

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4.4 Winch motors

DA 74CV 24 V stepless

For larger systems, see cable

plan for MultiStep
DA 74CV 24 V ON/OFF

DA 75A 24 V stepless

DA 75A 230 V stepless

DA 174 24 V stepless

DA 74BC 24 V stepless

DA 175 24 V ON/OFF

DA 175 24 V stepless

DA 175 230 V ON/OFF

DA 175 230 V stepless

DA 175 230 V stepless

DA 75A 24 V ON/OFF

DA 75A 24 V stepless

230V DA 75 motors for air inlet and air outlet cannot be connected in parallel. They must be separated
by means of two contactors. See section Connection of two or several DA 75A 230 V [} 53]

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4.5 Cable dimensions for 24V DC depending on length

Cable dimensions for DA 74 24V DC
Cross sec- Length
tion
1.5 mm2 0 - 100 m
2.5 mm2 101 - 200 m
4.0 mm2 201 - 300 m

Cable dimensions for DA 174 24V DC

Cross sec- Length
tion
1.5 mm2 0 - 100 m
2.5 mm2 101 - 165 m
4.0 mm2 166 - 265 m

Cable dimensions for DA 175 24V DC

DA 175-100 DA 175-150 DA 175-300 DA 175-600
Cross sec- Length Length Length Length
tion
1.5 mm2 0 - 290 m 0 - 220 m 0 - 135 m 0 - 60 m
2.5 mm2 136 - 225 m 61 - 100 m
4.0 mm2 101 - 165 m

Cable dimensions for DA 75 24V DC

Cross sec- Length
tion
1.5 mm2 0 - 100 m
2.5 mm2 101 - 165 m
4.0 mm2 166 - 265 m

Cable dimensions for DOL 119, DOL 114, DOL 111, DOL 58, DOL 53, DOL 19, DOL 18, DOL 12, DOL 10 24
V DC
Cross sec- Length
tion
1.5 mm2 0 - 200 m
2.5 mm2 201 - 330 m
4.0 mm2 331 - 530 m

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4.6 MultiStep (with internal fan speed controller)

Supply voltage for fans is divided into DA 74CV stepless 1 DA 74CV stepless 2
several groups depending on how
many there are and the power
consumption.
NOTE: Number of conductors
depends on type of fan. Air outlet 1 Air outlet 2

Controller

4.7 MultiStep (with external fan speed controller)

Supply voltage for fans is divided into DA 74CV stepless 1 DA 74CV stepless 2
several groups depending on how
many there are and the power
consumption.
NOTE: Number of conductors
depends on type of fan. Air outlet 1 Air outlet 2

Controller

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4.8 Dynamic MultiStep (with LPC)

Supply voltage for fans is divided into DA 74CV stepless 1 DA 74CV stepless 2
several groups depending on how
many there are and the power
consumption.
NOTE: Number of conductors
depends on type of fan. Air outlet 1 Air outlet 2

Controller

4.9 Three-phase fans

Supply voltage for fans is divided into several groups
depending on how many there are and the power
Controller
consumption.

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4.10 One-phase fans

Supply voltage for fans is divided into several groups
depending on how many there are and the power
consumption.
Controller

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4.11 BF 50 wall fan

Wiring box
Controller

1x230V
3x230V or 3x400V

BF 50 LPC ON/OFF

1x230V
3x230V or 3x400V

BF 50 LPC VAR

1x230V
3x230V 1x230V
3x400V
3x230V or 3x400V

BF 50 ON/OFF EL

1x230V
3x230V or 3x400V 1x230V
3x230V or 3x400V
BF 50 ON/OFF AIR

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4.12 DA 1700 wall fan

Wiring box
Controller

DA 1700 LPC 1x230 V

DA 1700 LPC 3x230 V

DA 1700 LPC 3x400 V

DA 1700 3x230 V
DA 1700 3x400 V

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4.13 DA 1700 LPC MultiStep

Wiring box
Controller

4.14 DA 1700 ON/OFF wall fan MultiStep

Wiring box
Controller

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4.15 Fan speed controller, door opening, heating, cooling and air
circulator
Internal speed controller
Max. 6.8 A
LPC

DOL 38

DOL 31 max. 16A

Door opening / door opening

DA 175

Room heating 0-10V

Circulation pump

Room heating 24V

Room heating 230 V

Floor heating unit

Blow heater

Solenoid valve
3x400V
3x230V
Cooling 1x230V

3x230V
Tunnel cooling 1x230V

Tunnel cooling 0-10V

3x230V
Air circulator 1x230V

Air circulator 0-10V

32 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

4.16 Sensors, water meter, 24-hour clock, light and energy meter

DOL 12 temperature sensor

DOL 10 temperature sensor

DOL 114 temperature and

humidity sensor

DOL 53 NH3 sensor

DOL 119 CO2 sensor

Dynamic Air sensor

Pressure sensor

Auxiliary sensor

DOL 58 weather station

Light sensor

Water meter

24-hour clock

Key / Press

Light

Energy meter

Current sensor

Circuit Diagrams and Cable Plans 33

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5 Circuit diagrams
5.1 General information about circuit diagrams
Symbols are in accordance with the IEC/EN 60617 standard.
The classification of the symbols ("letter codes") on the symbols is in accordance with the IEC/EN 81346-2 stan-
dard.
Reference designations are in accordance with IEC/EN 81346-1:2001 structuring principles and reference des-
ignations. This standard indicates structured methods for naming electrotechnical systems.

5.1.1 Color code

Letter Code Color Standard
BK Black
BN Brown
RD Red
OG Orange
YE Yellow
GN Green Color coding on wires are in accor-
dance with standard IEC 60757:
BU Blue (incl. light blue) Letter codes to identify colors used
VT Violet (purple red) on drawings, diagrams, labelling,
GY Grey (slate) etc.:
WH White
PK Pink
GD Gold
TQ Turquoise
SR Silver
GNYE Green-and-yellow

5.1.2 Power supply isolator

The installation of a power supply isolator is required for each motor and
motor control.
Power supply isolator

5.1.3 Letter code

The letter codes used in accordance with standard IEC/EN61346-2.
-F -K -M -Q -S -T -W
Protective equipment RCCB / Controller Fan Power supply Switch Motor con- Cable
Initial fuse Protective motor Contactor Motor isolator troller
switch

34 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.1.4 Example of connection

Example: Connection of a DA74CV winch motor to controller K1

-K1.1 Terminal number

-K1.2 in controller
-K1.3
-K1.4
-K1.5
-K1.6

Power supply from emergency opening

Power supply from controller:

+24V DC from
terminal +24V max 0.8A on K1.6
0V from
terminal controller GND - on K1.6 Cable name

Cable lead
DA 74CV winch motor
Terminal

-K1.6 loop module

Power supply from emergency opening 0V-1 = Q1 terminal in controller.

Power supply from emergency opening 24V-1 = Q2 or Q3 terminal in controller.
Power supply from emergency opening 24V-2 = Q4 or Q5 terminal in controller.
Power supply from emergency opening 24V-12 = F6 terminal in the controller/emergency opening.

In case of doubt, please contact Service or your dealer.

Circuit Diagrams and Cable Plans 35

DOL 534 • DOL 539

5.1.5 Connection of DC supplied coil

In order to protect the relays in the house controller, a protective diode must always be mounted in a connected
product if a DC supplied coil such as a relay, contactor, solenoid coil, solenoid valve or similar is activated.
The protective diode is mounted in the terminal box on the connected product.

The area around the protective diode must fit with the current supply voltage and power.

The example below is of a -K1 product with coil.

Product with mounted TransZorb diode.

The TransZorb diode can be mounted regardless of
the polarity. The TransZorb diode is part of the
supplied resistor set.

Transzorb

36 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.1.6 Overview of connection terminals

5.1.6.1 Power supply (-K1.1)

5.1.6.2 Main module (-K1.2)

5.1.6.3 I/O module (-K1.3)

5.1.6.4 Triac module (-K1.4)

5.1.6.5 Loop modules (-K1.5) and (-K1.6)

Circuit Diagrams and Cable Plans 37

DOL 534 • DOL 539

5.2 Supply voltage for I/O module /main module

Power supply 1x230 V+ PE Alarm light

5.3 Alarm
For cable plans, see sections Systems without emergency opening [} 23] and Systems with ON/OFF emergency
opening [} 23]
Climate alarm Production alarm

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Alarm system Alarm system

38 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.4 Emergency opening

5.4.1 ON/OFF - medium / large / xtra large
For cable plan, see section Systems with ON/OFF emergency opening [} 23], see also the Technical Manual for
emergency opening.

Emergency
opening

Medium / Large / Xtra large

Circuit Diagrams and Cable Plans 39

DOL 534 • DOL 539

5.4.2 Temperature controlled - medium and large

For cable plan, see section Systems with temperature-controlled emergency opening [} 23], see also the Tech-
nical Manual for emergency opening.

Emergency
opening

Medium/Large

5.4.3 Emergency opening with Mini-UPS

Also see the Technical User Guide for Mini-UPS.

Emergency
opening Mini-UPS

Medium/Large

40 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.5 Air circulator

5.5.1 One-phase / Three-phase
For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal
number Example of terminal
For correct connection number
see the setup menu For correct connection
Show connection in see the setup menu
controller Show connection in
controller

Air circulator Air circulator

5.5.2 0-10V analog

For cable plan, see the section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Air circulator 0-10V

Circuit Diagrams and Cable Plans 41

DOL 534 • DOL 539

5.5.3 Chill Unit

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Fan speed
controller

Chill unit

5.6 Wall fan

5.6.1 BF 50 LPC ON/OFF
For cable plan, see the section BF 50 wall fan [} 29] or see the Technical User Guide for BF 50. Analog signal
default 10-0V.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Wiring box

LPC 3 x 400 V
Motor controller LPC actuator time-controlled

LPC fan

42 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.6.2 BF 50 LPC VAR

For cable plan, see the section BF 50 wall fan [} 29] or see the Technical User Guide for BF 50. Analog signal
default 10-0V.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Wiring box

LPC 3 x 400 V
Motor controller LPC actuator
stepless

LPC fan

5.6.3 BF 50 ON/OFF EL
For cable plan, see the section BF 50 wall fan [} 29] or see the Technical User Guide for BF 50.

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

ON/OFF actuator box

*Zero wire
from star point
in fan motor

ON/OFF actuator
Fan 3x400 V

Circuit Diagrams and Cable Plans 43

DOL 534 • DOL 539

5.6.4 BF 50 ON/OFF AIR

For cable plan, see the section BF 50 wall fan [} 29] or see the Technical User Guide for BF 50.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Fan 3x400V

5.6.5 DA 1700 LPC 1x230 V

For cable plan, see section DA 1700 wall fan [} 30] or DA 1700 LPC MultiStep [} 31] Analogue signal default
10-0 V

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Inlet flap
LPC

Fan

44 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.6.6 DA 1700 LPC 3x400 V or 3x230 V

For cable plan, see section DA 1700 wall fan [} 30] orDA 1700 LPC MultiStep [} 31]. Analogue signal default
10-0 V.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Inlet flap
LPC

Fan

5.6.7 DA 1700 3x400 V or 3x230 V

For cable plan, see section DA 1700 wall fan [} 30] or DA 1700 ON/OFF wall fan MultiStep [} 31]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Inlet flap

Fan

Circuit Diagrams and Cable Plans 45

DOL 534 • DOL 539

5.7 Fan speed controller

5.7.1 Internal fan speed controller, two parallel fans
For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Fan Fan

5.7.2 DOL 31 fan speed controller

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Fan speed controller

Fan

46 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.7.3 Frequency converter

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]. Ana-
logue signal default 10-0 V.

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Frequency converter

Fan

5.7.4 Frequency converter DA 74CV stepless / Dynamic MultiStep

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]. Ana-
logue signal default 10-0 V.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Inlet flap, stepless

Frequency converter

Fan

Circuit Diagrams and Cable Plans 47

DOL 534 • DOL 539

5.7.5 LPC motor controller

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]. Ana-
logue signal default 10-0 V.

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

LPC motor controller

LPC fan

5.7.6 LPC / DA 74CO ON/OFF / Dynamic MultiStep

For cable plan, see section Dynamic MultiStep (with LPC) [} 27]. Analogue signal default 10-0 V.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Winch motor

LPC motor controller

LPC fan

48 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.7.7 LPC / DA 74CV stepless / Dynamic MultiStep

For cable plan, see section Dynamic MultiStep (with LPC) [} 27]. Analogue signal default 10-0 V.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Winch motor

LPC motor controller

LPC fan

Circuit Diagrams and Cable Plans 49

DOL 534 • DOL 539

5.8 Winch motors, all positions

5.8.1 DA 74CO ON/OFF
For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Winch motor ON/OFF

Fan

5.8.2 DA 74CV / BC stepless

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Winch motor stepless

50 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.8.3 DA 75A ON/OFF 24 V

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Winch motor ON/OFF 24V

5.8.4 DA 75A stepless 24 V

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Winch motor stepless 24 V

Circuit Diagrams and Cable Plans 51

DOL 534 • DOL 539

5.8.5 DA 75A stepless 230 V without potentiometer

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Winch motor stepless 230V

5.8.6 DA 75A stepless 230 V

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Winch motor stepless 230V

52 Circuit Diagrams and Cable Plans

DOL 534 • DOL 539

53
Example of terminal number
For correct connection
see the setup menu
show connections in the controller
5.8.7 Connection of two or several DA 75A 230 V
For cable plan, see section Winch motors [} 24]

Circuit Diagrams and Cable Plans

Winch motor Winch motor Winch motor
230V winch motors for air intake and air outlet cannot be connected in parallel.
They must be separated by means of two contactors.
DOL 534 • DOL 539

5.8.8 DA 174 stepless 24 V

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Winch motor stepless 24 V

5.8.9 DA 175 ON/OFF 24 V

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connection in the controller

Actuator ON/OFF
24V

54 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.8.10 DA 175 stepless 24 V

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connection in the controller

Actuator stepless 24V

5.8.11 DA 175 ON/OFF 230 V

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Winch motor ON/OFF 230V

Circuit Diagrams and Cable Plans 55

DOL 534 • DOL 539

5.8.12 DA 175 230 V stepless

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Winch motor stepless 230V

56 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.9 MultiStep, FreeRange (houses with pop holes)

With stop relay when FreeRange ventilation is used.

5.9.1 Air outlet DA 74CO ON/OFF fan / stop relay

For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
Show connections
in the controller

Winch motor ON/OFF

Fan

Circuit Diagrams and Cable Plans 57

DOL 534 • DOL 539

5.9.2 Air outlet with several fans / stop relays

With stop relay when FreeRange ventilation is used.
Fans are distributed on phases L1, L2, L3.
For cable plan, see section Winch motors [} 24]

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Winch motor ON/OFF Winch motor ON/OFF

Fan Fan

58 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.9.3 Pop holes detection

When FreeRange without pop-hole control is selected, it is necessary to know when the pop-holes are open for
the purpose of regulating the climate.

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Only if pull-down
is
displayed in
‘Show
connections’

Detection

5.10 Door opening

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Only if pull-down
is
displayed in
‘Show
connections’

Open Close Detect Detect

open close
Door opening

Circuit Diagrams and Cable Plans 59

DOL 534 • DOL 539

5.11 Door opening using DA 175

For cable plan, see the section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Door opening
DA 175

60 Circuit Diagrams and Cable Plans

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5.12 Room/Floor heating

5.12.1 0-10V analog 230V with slave relay
For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Control valve

Circulation pump

5.12.2 Relay heat ON/OFF

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Solenoid valve

Circulation pump

Circuit Diagrams and Cable Plans 61

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5.12.3 Heating 24V

For cable plan, see the section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Control valve

Circulation pump

5.12.4 Floor heating unit 0-10 V

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

0-10 V actuator

DOL 12 DOL 12 Circulation pump

supply flow return flow

62 Circuit Diagrams and Cable Plans

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5.12.5 ACU Blow heater / air circulator 24 V

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

+24V external power supply

0V external power supply

Blow heater Blow heater

5.12.6 ACU Blow heater / air circulator 230 V

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Blow heater Blow heater

Circuit Diagrams and Cable Plans 63

DOL 534 • DOL 539

5.12.7 IBH Blow heater

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Indirect blow heater Indirect blow heater

Air circulator Heating Alarm signal 230 V Alarm signal 230 V

5.13 Sensors
5.13.1 DOL 10/DOL 12 temperature sensor
For cable plan, see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Temperature sensor

64 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.13.2 DOL 114 temperature / humidity sensor

For cable plan, see the section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Temperature
Humidity

Temperature / humidity sensor

5.13.3 DOL 53 NH3 ammonia sensor

For cable plan, see the section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

NH3 ammonia sensor

Circuit Diagrams and Cable Plans 65

DOL 534 • DOL 539

5.13.4 DOL 119 CO2 sensor

For cable plan, see the section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

0-10 V 10000 ppm

0-5 V 5000 ppm

CO2 sensor

5.13.5 Sub-pressure gauge

For cable plan see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in the controller

Sub-pressure Sub-pressure Sub-pressure

gauge Belimo gauge 0-100 Pa gauge DOL 18 Jumper DOL 18

66 Circuit Diagrams and Cable Plans

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5.13.6 Current sensor

For cable plan, see the section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Current sensor

5.13.7 Dynamic Air sensor

For cable plan, see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Run the blue and black wire separately

to the climate controller where the
wires should be connected in a
negative terminal.
The wires must not be connected to
other ground wires on the way to the
controller.

Dynamic Air sensor

Circuit Diagrams and Cable Plans 67

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5.13.8 Auxiliary sensor

For cable plan, see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Auxiliary sensor

5.13.9 DOL 58 weather station

For cable plan, see the section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Weather station

68 Circuit Diagrams and Cable Plans

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5.14 Cooling
5.14.1 Humidification / Soaking
For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
show connections in the controller

Solenoid valve

5.14.2 High-pressure pump 1x230V / 3x230V

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal
Example of terminal number
number
For correct connection
For correct connection
see the setup menu
see the setup menu
Show connection in controller
Show connection in
controller

Pump Pump

Circuit Diagrams and Cable Plans 69

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5.14.3 High-pressure cooling pump 3x400V

For cable plan, see section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Pump

5.14.4 High-pressure pump 2 zone / shared between several controllers

For cable plan, see the section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connections in the
controller

Pump Solenoid valve

70 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.14.5 Tunnel cooling 1x230V / 3x230V

For cable plan, see the section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal
Example of terminal number
number
For correct connection
For correct connection
see the setup menu
see the setup menu
Show connection in controller
Show connection in
controller

Pump Pump

5.14.6 Tunnel cooling 0-10V

For cable plan, see the section Fan speed controller, door opening, heating, cooling and air circulator [} 32]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Frequency converter

Pump

Circuit Diagrams and Cable Plans 71

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5.15 Water meter

For cable plan, see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in controller

Only if pull-down is
displayed in ‘Show
connections’

Water meter

5.16 24-hour clock/Interval timers

For cable plan, see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in
controller

72 Circuit Diagrams and Cable Plans

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5.17 Catching function key / press

For cable plan, see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connection in house controller

Only if pull-
down is
displayed in
‘Show
connections’

Key / Press

5.18 Energy meter

For cable plan, see section Sensors, water meter, 24-hour clock, light and energy meter [} 33]

Example of terminal number

For correct connection
see the setup menu
Show connections in the controller

Only if pull-down is
displayed in ‘Show
connections’

Circuit Diagrams and Cable Plans 73

DOL 534 • DOL 539

5.19 Connection to equal pressure system

A distinction is made between two types of equal pressure system:
• MultiStep air outlet: The swivel shutters are controlled by the MultiStep principle and open alternately.
• Stepless air outlet: The swivel shutters open no matter what.

Swivel shutter

Winch motor
Cable

Fan

Recirculation fan

74 Circuit Diagrams and Cable Plans

 DOL 534 • DOL 539

5.19.1 MultiStep
Recirculation
Recirculation fans are connected to external fan speed controller DOL 31 or internal fan speed controllers.
See diagram in section DOL 31 fan speed controller [} 46].
See diagrams in section Internal fan speed controller, two parallel fans [} 46].

Air supply
See diagram in section DOL 31 fan speed controller [} 46].

Air intake
See diagrams in section Winch motors, all positions [} 50].

Air outlet
The air outlet is connected as an ordinary MultiStep.
See diagrams in section Winch motors, all positions [} 50].

5.19.2 Stepless
Recirculation
Recirculation fans are connected to internal fan speed controllers or external fan speed controllers.
See diagrams in section Fan speed controller [} 46].

Inlet and outlet

Fans for both inlet and outlet are connected to external fan speed controller DOL 31.
See diagram in section DOL 31 fan speed controller [} 46].

Air intake
See diagrams in section Winch motors, all positions [} 50].

Air outlet
See diagrams in section Winch motors, all positions [} 50].

Circuit Diagrams and Cable Plans 75

 611861 • 2022-09-30 • en-US • Made in Denmark

SKOV A/S • Hedelund 4 • Glyngøre • DK-7870 Roslev

Tel. +45 72 17 55 55 • www.skov.com • E-mail: skov@skov.dk