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

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.

Technical User Guide 
 
DA 74C Winch Motor 
1Product Description..................................................................................................5
2General information..................................................................................................6
1 Recommended Tools............................................................................................................ 6 
2 Warnings and Symbols ........................................................................................................ 6 
3Mounting Guide ........................................................................................................7
1 Mounting DA 74C.................................................................................................................. 7 
1.1 On the Inlet Funnel..................................................................................................................................7 
1.2 Mounting in Chimney...............................................................................................................................8 
1.3 Mounting the Cover.................................................................................................................................8 
1.4 Checking Manual Operation....................................................................................................................8 
1.5 Before Putting the System into Use the First Time.................................................................................8 
1.6 Installation of adapter for swivel shutter..................................................................................................8 
4Installation Guide......................................................................................................9
1 Electrical Connection ........................................................................................................... 9 
1.1 Cable Routing..........................................................................................................................................9 
1.2 Colour code.............................................................................................................................................9 
1.3 Setting the Jumper................................................................................................................................10 
1.4 Connection and Circuit Diagram for DA 74C........................................................................................11 
1.4.1 Connection in DA 74CO ON/OFF 230 V ...............................................................................................................11 
1.4.2 Circuit Diagram for DA 74CO ON/OFF 230V ........................................................................................................11 
1.4.3 Connection in DA 74CO ON/OFF 230 V with External Capacitor..........................................................................12 
1.4.4 Circuit Diagram for DA 74CO ON/OFF 230 V with External Capacitor..................................................................12 
1.4.5 Connection in DA 74CO ON/OFF 400 V ...............................................................................................................13 
1.4.6 Circuit Diagram for DA 74CO ON/OFF 400 V .......................................................................................................13 
1.4.7 Connection in DA 74CV Stepless 230 V................................................................................................................14 
1.4.8 Circuit Diagram for DA 74CV Stepless 230 V........................................................................................................14 
1.4.9 Connection in DA 74CV Stepless with External Capacitor ....................................................................................15 
1.4.10 Circuit Diagram for DA 74CV Stepless with External Capacitor ............................................................................15 
1.4.11 Connection in DA 74CV Stepless 400 V................................................................................................................16 
1.4.12 Circuit Diagram for DA 74CV Stepless 400 V........................................................................................................16 
1.4.13 Connection in DA 74CVA 0-10 V...........................................................................................................................17 
1.4.14 Circuit Diagram for DA 74CVA 0-10 V...................................................................................................................17 
1.4.15 Connection in DA 74CO ON/OFF to DA 600 LPC-2..............................................................................................18 
1.4.16 Circuit Diagram for DA 74CO ON/OFF to DA 600 LPC-2......................................................................................18 
1.4.17 Connection in DA 74CV stepless to DA 600 LPC-2...............................................................................................20 
1.4.18 Circuit Diagram for DA 74CV stepless to DA 600 LPC-2 ......................................................................................20 
5Maintenance Guide.................................................................................................22 
1 Cleaning............................................................................................................................... 22 
1.1 Annual Inspection..................................................................................................................................22 
1.2 Replacing the Motor..............................................................................................................................22 
1.3 Dismantling for Recycling / Disposal.....................................................................................................23 
2 LED Indication..................................................................................................................... 24 
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

527272

DA 74 cover

301074

Relay cable 0.75 mm 2x300 + 1x80

Retaining disc

Locking screw

432975

Gear unit complete (green)

290074

Printed circuit board (PCB)

Connection terminals on PCB

280060

Contactor 3-pole 400 V, 230 V 50/60 Hz, for 3-phase fan

432952

Motor

Pull rod manual release

310323

Mounting clip for DIN rail, black

344174

Label for DA 74 terminal block 12p

310000

Terminal block 12P

310237

Phase busbar cobber 3p 10mm-spacing

Table 1: Partlist

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

Black

Brown

Red

Orange

Yellow

Green

Blue (incl. light blue)

Violet (purple red)

Grey (slate)

White

Pink

Gold

Turquoise

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.