Skov DA 74C Series Manual

2018.12.18 • 604148
DA 74C Winch Motor
Technical User Guide
For other language variants
of this document we refer to
http://docs.skov.com/1077 or
your local dealer.

DA 74C Winch Motor
Program Version
The product described in this manual holds software. This manual corresponds to:
•Software version 3.3
•It was released in 2013.
Product and Documentation Changes
SKOV A/S reserve the right to change this document and the product herein described without further notice. In case of
doubt, please contact SKOV A/S.
Date of change appears from the front and back of this manual.
Note
•All rights reserved SKOV A/S. No part of this manual may be reproduced in any manner whatsoever without
the express written permission from SKOV A/S.
•SKOV A/S has made all reasonable efforts 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 notified thereof.
•Irrespective of the above, 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 2013 by SKOV A/S.

4 Technical User Guide
DA 74C Winch Motor
1Product Description..................................................................................................5
2General information..................................................................................................6
2.1 Recommended Tools............................................................................................................ 6
2.2 Warnings and Symbols ........................................................................................................ 6
3Mounting Guide ........................................................................................................7
3.1 Mounting DA 74C.................................................................................................................. 7
3.1.1 On the Inlet Funnel..................................................................................................................................7
3.1.2 Mounting in Chimney...............................................................................................................................8
3.1.3 Mounting the Cover.................................................................................................................................8
3.1.4 Checking Manual Operation....................................................................................................................8
3.1.5 Before Putting the System into Use the First Time.................................................................................8
3.1.6 Installation of adapter for swivel shutter..................................................................................................8
4Installation Guide......................................................................................................9
4.1 Electrical Connection ........................................................................................................... 9
4.1.1 Cable Routing..........................................................................................................................................9
4.1.2 Colour code.............................................................................................................................................9
4.1.3 Setting the Jumper................................................................................................................................10
4.1.4 Connection and Circuit Diagram for DA 74C........................................................................................11
4.1.4.1 Connection in DA 74CO ON/OFF 230 V ...............................................................................................................11
4.1.4.2 Circuit Diagram for DA 74CO ON/OFF 230V ........................................................................................................11
4.1.4.3 Connection in DA 74CO ON/OFF 230 V with External Capacitor..........................................................................12
4.1.4.4 Circuit Diagram for DA 74CO ON/OFF 230 V with External Capacitor..................................................................12
4.1.4.5 Connection in DA 74CO ON/OFF 400 V ...............................................................................................................13
4.1.4.6 Circuit Diagram for DA 74CO ON/OFF 400 V .......................................................................................................13
4.1.4.7 Connection in DA 74CV Stepless 230 V................................................................................................................14
4.1.4.8 Circuit Diagram for DA 74CV Stepless 230 V........................................................................................................14
4.1.4.9 Connection in DA 74CV Stepless with External Capacitor ....................................................................................15
4.1.4.10 Circuit Diagram for DA 74CV Stepless with External Capacitor ............................................................................15
4.1.4.11 Connection in DA 74CV Stepless 400 V................................................................................................................16
4.1.4.12 Circuit Diagram for DA 74CV Stepless 400 V........................................................................................................16
4.1.4.13 Connection in DA 74CVA 0-10 V...........................................................................................................................17
4.1.4.14 Circuit Diagram for DA 74CVA 0-10 V...................................................................................................................17
4.1.4.15 Connection in DA 74CO ON/OFF to DA 600 LPC-2..............................................................................................18
4.1.4.16 Circuit Diagram for DA 74CO ON/OFF to DA 600 LPC-2......................................................................................18
4.1.4.17 Connection in DA 74CV stepless to DA 600 LPC-2...............................................................................................20
4.1.4.18 Circuit Diagram for DA 74CV stepless to DA 600 LPC-2 ......................................................................................20
5Maintenance Guide.................................................................................................22
5.1 Cleaning............................................................................................................................... 22
5.1.1 Annual Inspection..................................................................................................................................22
5.1.2 Replacing the Motor..............................................................................................................................22
5.1.3 Dismantling for Recycling / Disposal.....................................................................................................23
5.2 LED Indication..................................................................................................................... 24
5.3 Troubleshooting / Remedy................................................................................................. 24
6Technical Data ........................................................................................................25
EU - DECLARATION OF CONFORMITY...................................................................26

Technical User Guide 5
DA 74C Winch Motor
1 Product Description
The DA 74CV is a winch motor for stepless regulation of swivel shutters in house ventilation systems.
The DA 74CO is a winch motor for ON/OFF regulation of swivel shutters in house ventilation systems.
The DA 74CVA is a winch motor for analog stepless regulation of swivel shutters in house ventilation systems.
When it says DA 74C, it applies to all winch motor variants.
The DA 74C can be mounted directly on the swivel shutter shaft and operated manually. The DA 74C has been
developed specifically for installation in the very harsh house environment.
The DA 74C supports the range of our computers capable of controlling MultiStep®functions.
The DA 74C can open the swivel shutter manually if you press the manual release.
Figure 1: DA 74C
Position
Article no.
Winch motor DA 74C
1
527272
DA 74 cover
2
301074
Relay cable 0.75 mm 2x300 + 1x80
3
Retaining disc
4
Locking screw
5
432975
Gear unit complete (green)
6
290074
Printed circuit board (PCB)
7
Connection terminals on PCB
8
280060
Contactor 3-pole 400 V, 230 V 50/60 Hz, for 3-phase fan
9
432952
Motor
10
Pull rod manual release
11
310323
Mounting clip for DIN rail, black
12
344174
Label for DA 74 terminal block 12p
13
310000
Terminal block 12P
14
310237
Phase busbar cobber 3p 10mm-spacing
Table 1: Partlist
1
3
2
4
5
6
7
13
9
10
8
11
14
12

6 Technical User Guide
DA 74C Winch Motor
2 General information
2.1 Recommended Tools
The following or similar tools are required to troubleshoot and service the DA 74C. The tools are not supplied
by SKOV A/S.
Item
Description
Multimeter
Screwdriver set
Side cutting pliers
Long-nose pliers
Knife
Water pump pliers
Cordless drill
Drill bits, various sizes
Adjustable spanner
Ladder
Table 2: The most necessary tools for servicing the DA 74C.
2.2 Warnings and Symbols
This manual uses the following symbols:
Warns of general dangers

Technical User Guide 7
DA 74C Winch Motor
3 Mounting Guide
Check that all parts are present and undamaged before mounting the DA 74C winch motor.
3.1 Mounting DA 74C
3.1.1 On the Inlet Funnel
If, on delivery, the DA 74C is not mounted on the inlet funnel or it has to be retrofitted, follow the instructions
below.
Turn the swivel shutter to closed position.
The factory has prepared the winch motor for mounting on a
closed swivel shutter.
Figure 2: Swivel shutter in closed position
Press the DA 74C onto the swivel shutter shaft.
Mount the retaining disc (A) and locking screw(B) .
Check the position by activating the manual release (C), and turn
the swivel shutter counter- clockwise until it opens against
the mechanical end stop, Figure 4.
Figure 3: DA 74C
Activate the manual release (C), and turn the swivel shutter
clockwise until it is in closed position, Figure 2.
Figure 4: Swivel shutter in open position
(B)
(C)
(A)

8 Technical User Guide
DA 74C Winch Motor
3.1.2 Mounting in Chimney
Push the inlet funnel vertically upwards into place and lock it
using the four screws and washers included. See Figure 5.
Figure 5: Mounting the inlet funnel in the chimney
3.1.3 Mounting the Cover
Mount the cover before putting the DA 74C winch motor into use. Check that the seal is undamaged and placed
correctly. Then mount the cover. Secure the cover by turning the six click screws, Figure 6 (A).
3.1.4 Checking Manual Operation
Check the release when the cover has been mounted. Press the push button, Figure 6 (B) and check by turning
the swivel shutter.
3.1.5 Before Putting the System into Use the First Time
To provide the winch motors with numbers, attach the included set
of stickers to the flat part of the cabinet, Figure 6.(C)
Figure 6: DA 74C
3.1.6 Installation of adapter for swivel shutter
Using the DA 74 adapter for swivel shutter, the DA 74C winch motor can be mounted on an axle diameter from
15–20 mm. The DA 74 adapter is ordered separately.
Mount the axle in the shackle and tighten the two nuts.
Torque should be between 15–20 Nm.
Figure 7: DA 74 adapter for swivel shutter
Before the axle and winch motor are connected, both must be in the same position (open/open or
closed/closed).
(C)
(B)
(A)

Technical User Guide 9
DA 74C Winch Motor
4 Installation Guide
4.1 Electrical Connection
Installation, service and troubleshooting of electrical equipment must be carried out by expert
staff in compliance with applicable national regulations –in Europe, this would be the EN
60204-1 or other current EU regulations.
A supply separator must be installed for each motor and power supply to facilitate voltage-free
work on the electrical equipment. Supply separators are not supplied by SKOV A/S.
4.1.1 Cable Routing
All cables must be mounted in M25 glands according to Figure 8, protection class minimum IP65. Cables are to
be secured in the usual way outside the cabinet. Close holes which are not used with IP65safety plugs.
Correct
Incorrect
Figure 8: Placement of cable
4.1.2 Colour Code
Colour coding on wires in accordance with IEC standard 60757: Letter coding to identify colours used on
drawings, diagrams, labelling, etc.
Letter Code
Colour
BK
Black
BN
Brown
RD
Red
OG
Orange
YE
Yellow
GN
Green
BU
Blue (incl. light blue)
VT
Violet (purple red)
GY
Grey (slate)
WH
White
PK
Pink
GD
Gold
TQ
Turquoise
SR
Silver
GNYE
Green-and-yellow

10 Technical User Guide
DA 74C Winch Motor
4.1.3 Setting the Jumper
Jumper setting on the PCB to give the DA 74C the desired function.
Figure 9: Jumper setting
O.C. = Open Collector (transistor output)
ON/OFF
Control voltage +24 V => Close.
Control voltage 0 V => Open.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 1.8 V (15 degree opening) => relay turns ON.
STEPLESS
Control voltage +24 V/0 V => Open. 0 V/24 V => Close.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 9.2 V (85 degree opening) => relay turns ON.
0-10 V ANALOG
The control voltage increases together with the opening degree. 2.3 V = 23% open.
The feedback signal increases together with the opening degree.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 0.5 V => relay turns ON.
ON/OFF REVERSE
Control voltage +24 V => Close.
The feedback signal increases together with the opening degree 0.25 V= closed=90°.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 1.8 V (15 degree opening) => relay turns ON.
ANALOG REVERSE
The control voltage increases reverse the opening degree. 2.3 V = 77% open.
The feedback signal increases reverse the opening degree.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 0.5 V => relay turns ON.
STEPLESS –15°
Control voltage +24 V/0 V => Open. 0 V/24 V => Close.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 1.8 V (15 degree opening) => relay turns ON.
STEPLESS REVERSE
Control voltage +24 V/0 V => Open. 0 V/24 V => Close.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 9.2 V (85 degree opening) => relay turns ON.
90º
0º 90º
0º
REVERSE

Technical User Guide 11
DA 74C Winch Motor
4.1.4 Connection and Circuit Diagram for DA 74C
4.1.4.1 Connection in DA 74CO ON/OFF 230 V
ON/OFF
Control voltage +24 V => Close.
Control voltage 0 V => Open.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 1.8 V (15 degree opening) => relay turns ON.
Figure 10: Jumper for ON/OFF
Figure 11: Connection ON/OFF 230 V
4.1.4.2 Circuit Diagram for DA 74CO ON/OFF 230V
Figure 12: Circuit diagram ON/OFF 230 V
230 V L1
N
230 V L1
N
BK BN
N
ON/OFF
H10 H11 H12 H13 H14 H15
PE
H1
H2
H3
H6
H7
H8
H9
H
H10a
11a
+
CALIBRATE
24V
ON/OFF
0V
24V
12a
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Q1
F6
Q2-Q5
When installing DOL 278 ON/OFF
emergency opening, connection of the
H6 is not necessary

12 Technical User Guide
DA 74C Winch Motor
4.1.4.3 Connection in DA 74CO ON/OFF 230 V with External Capacitor
ON/OFF
Control voltage +24 V => Close.
Control voltage 0 V => Open.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 1.8 V (15 degree opening) => relay turns ON.
Figure 13: Jumper for ON/OFF
Figure 14: Connection ON/OFF 230 V external capacitor
4.1.4.4 Circuit Diagram for DA 74CO ON/OFF 230 V with External Capacitor
Figure 15: Circuit diagram ON/OFF 230 V external capacitor
230 V L1
N
230 V L1
N
BK BN
N
ON/OFF
L
H10 H11 H12 H13 H14 H15
PE
H1
H2
H3
H6
H7
H8
H9
H
H10a
+
CALIBRATE
24V
ON/OFF
0V
24V
12a
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Q1
F6
Q2-Q5
When installing DOL 278 ON/OFF
emergency opening, connection of the
H6 is not necessary

Technical User Guide 13
DA 74C Winch Motor
4.1.4.5 Connection in DA 74CO ON/OFF 400 V
ON/OFF
Control voltage +24 V => Close.
Control voltage 0 V => Open.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 1.8 V (15 degree opening) => relay turns ON.
Figure 16: Jumper for ON/OFF
Figure 17: Connection ON/OFF 400 V
4.1.4.6 Circuit Diagram for DA 74CO ON/OFF 400 V
Figure 18: Circuit diagram ON/OFF 400 V
BK BN
400 V L1
L2
L3
N
L1
N
A2 14 L3 L2 L1
A1 13 W V U
L2
L3
400 V
H10 H11 H12 H13 H14 H15
PE
H1
H2
H3
H6
H7
H8
H9
H
H10a
+
CALIBRATE
24V
ON/OFF
0V
24V
12a
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from
emergency opening
or internal 24 V
Q1
F6
Q2-Q5
When installing DOL 278 ON/OFF
emergency opening, connection of the
H6 is not necessary

14 Technical User Guide
DA 74C Winch Motor
4.1.4.7 Connection in DA 74CV Stepless 230 V
STEPLESS
Control voltage +24 V/0 V => Open. 0 V/24 V => Close.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 9.2 V (85 degree opening) => relay turns ON.
Figure 19: Jumper for stepless
Figure 20: Connection stepless 230 V
4.1.4.8 Circuit Diagram for DA 74CV Stepless 230 V
Figure 21: Circuit diagram stepless 230 V
230 V L1
N
230 V L1
N
N
H10 H11 H12 H13 H14 H15
PE
H1
H2
H3
H6
H7
H8
H9
H
H10a
11a
+
CALIBRATE
0V
0-10V
24V
+/-24V
+/-24V
12a
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Q1
F6
Q2-Q5
When using ON/OFF 278M and 378M,
connect Q1 to C17/B17 on the main
module.

Technical User Guide 15
DA 74C Winch Motor
4.1.4.9 Connection in DA 74CV Stepless with External Capacitor
STEPLESS
Control voltage +24 V/0 V => Open. 0 V/24 V => Close.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 9.2 V (85 degree opening) => relay turns ON.
Figure 22: Jumper for stepless
Figure 23: Connection stepless 230 V external capacitor
4.1.4.10 Circuit Diagram for DA 74CV Stepless with External Capacitor
Figure 24: Circuit diagram stepless 230 V external capacitor
230 V L1
N
230 V L1
N
N
L
H10 H11 H12 H13 H14 H15
PE
H1
H2
H3
H6
H7
H8
H9
H
H10a
11a
+
CALIBRATE
0V
0-10V
24V
+/-24V
+/-24V
12a
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Q1
F6
Q2-Q5
When using ON/OFF 278M and 378M,
connect Q1 to C17/B17 on the main module.

16 Technical User Guide
DA 74C Winch Motor
4.1.4.11 Connection in DA 74CV Stepless 400 V
STEPLESS
Control voltage +24 V/0 V => Open. 0 V/24 V => Close.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 9.2 V (85 degree opening) => relay turns ON.
Figure 25: Jumper for stepless
Figure 26: Connection stepless 400 V
4.1.4.12 Circuit Diagram for DA 74CV Stepless 400 V
Figure 27: Circuit diagram stepless 400 V
400 V L1
L2
L3
N
L1
N
A2 14 L3 L2 L1
A1 13 W V U
L2
L3
400 V
H10 H11 H12 H13 H14 H15
PE
H1
H2
H3
H6
H7
H8
H9
H
H10a
11a
+
CALIBRATE
0V
0-10V
24V
+/-24V
+/-24V
12a
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Q1
F6
Q2-Q5
When using ON/OFF 278M
and 378M,
connect Q1 to C17/B17 on
the main module.

Technical User Guide 17
DA 74C Winch Motor
4.1.4.13 Connection in DA 74CVA 0-10 V
0-10 V ANALOG
The control voltage increases together with the opening degree. 2.3 V = 23% open.
The feedback signal increases together with the opening degree.
Feedback signal > 0.5 V => O.C. turns ON.
Feedback signal > 0.5 V => relay turns ON.
Figure 28: Jumper for 0-10V
Figure 29: Connection 0-10 V winch motor
4.1.4.14 Circuit Diagram for DA 74CVA 0-10 V
Figure 30: Circuit diagram 0-10 V winch motor
H10 H11 H12 H13
PE
0-10V
0-10V
24V
0V
0-10V
0-10V
24V
0V
H1
H2
H3
H6
H7
H8
H9
H
H10a
11a
+
CALIBRATE
12a
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Temperature 278T and 378T = F6
ON/OFF 278M and 378M= Q2-Q5
Q1

18 Technical User Guide
DA 74C Winch Motor
4.1.4.15 Connection in DA 74CO ON/OFF to DA 600 LPC-2
Figure 31: Connection DA 74CO and DA 600 LPC-2
4.1.4.16 Circuit Diagram for DA 74CO ON/OFF to DA 600 LPC-2
Figure 32: Circuit diagram DA 74CO and DA 600 LPC-2
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Q1
F6
Q2-Q5
When installing DOL 278 ON/OFF
emergency opening, connection of the H6
is not necessary

Technical User Guide 19
DA 74C Winch Motor
4.1.4.16.1 Circuit Diagram for DA 74CO ON/OFF to DA 600 LPC-2 w/thermal circuit
breaker
Figure 33: Circuit diagram DA 74CO and DA 600 LPC-2 w/thermal circuit breaker
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in Computer
Supply from emergency
opening or internal 24 V
Q1
F6
Q2-Q5
When installing DOL 278 ON/OFF
emergency opening, connection of the H6
is not necessary

20 Technical User Guide
DA 74C Winch Motor
4.1.4.17 Connection in DA 74CV stepless to DA 600 LPC-2
Figure 34: Connection DA 74CV and DA 600 LPC-2
4.1.4.18 Circuit Diagram for DA 74CV stepless to DA 600 LPC-2
Figure 35: Circuit Diagram DA 74CV and DA 600 LPC-2
Supply from emergency opening
or internal 24 V
Q1
F6
Q2-Q5
When using ON/OFF 278M and 378M,
connect Q1 to C17/B17 on the main
module.
Example of terminal no.
For correct connection,
see the setup menu
Show Installation in
Computer