Skov ECT 920/DCT 920 fans Technical User Guide

Brand: Skov

Model: ECT 920/DCT 920 fans

Type: Technical User Guide

ECT 920 • DCT 920

Fans

Technical User Guide

604187 • 2021-02-04

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Français Pour les versions dans d'autres langues de ce document veuillez consulter:

http://docs.skov.com/1053

ECT 920 • DCT 920

Technical User Guide 3

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.

ECT 920 • DCT 920

Technical User Guide

1 Product description........................................................................................................................................5

2 Product survey ...............................................................................................................................................6

3 Mounting guide...............................................................................................................................................7

3.1 Recommended tools.................................................................................................................. 7

3.2 Positioning of fan in the exhaust unit...................................................................................... 8

3.3 Safety distance........................................................................................................................... 8

4 Installation guide ............................................................................................................................................9

4.1 Electrical connection................................................................................................................. 9

4.1.1 Disclaimer at retrofitting fans ....................................................................................................... 9

4.1.2 Cabling in the exhaust unit........................................................................................................... 9

4.2 Adjusting the jumper and connection in the winch motor ..................................................10

4.3 General information about circuit diagrams ......................................................................... 11

4.3.1 Color code.................................................................................................................................. 11

4.3.2 Power supply isolator................................................................................................................. 11

4.3.3 Letter Code ................................................................................................................................ 11

4.4 Cable plans and circuit diagrams........................................................................................... 12

4.4.1 DCT 920-1 ON/OFF 400 V ........................................................................................................ 12

4.4.1.1 Cable plan.................................................................................................................................. 12

4.4.1.2 Terminals in DCT 920-1............................................................................................................. 12

4.4.1.3 Circuit diagram........................................................................................................................... 13

4.4.2 ECT 920-1E EC stepless - ON/OFF 230 V................................................................................ 14

4.4.2.1 Cable plan ON/OFF ................................................................................................................... 14

4.4.2.2 Terminals in ECT 920-1E........................................................................................................... 14

4.4.2.3 Circuit diagram ON/OFF ............................................................................................................ 15

4.4.2.4 Cable plan stepless.................................................................................................................... 16

4.4.2.5 Terminals in ECT 920-1E........................................................................................................... 16

4.4.2.6 Circuit diagram stepless............................................................................................................. 17

4.4.3 DCT 920-2 ON/OFF 400 V ........................................................................................................ 18

4.4.3.1 Cable plan.................................................................................................................................. 18

4.4.3.2 Terminals in DCT 920-2............................................................................................................. 18

4.4.3.3 Circuit diagram........................................................................................................................... 19

4.4.4 DCT 920-2F VFD 400 V............................................................................................................. 20

4.4.4.1 Cable plan.................................................................................................................................. 20

4.4.4.2 Terminals in DCT 920-2F........................................................................................................... 20

4.4.4.3 Circuit diagram........................................................................................................................... 21

4.4.5 DCT 920-4E EC stepless - ON/OFF 400 V................................................................................ 22

4.4.5.1 Cable plan ON/OFF ................................................................................................................... 22

4.4.5.2 Terminals in DCT 920-4E .......................................................................................................... 22

4.4.5.3 Circuit diagram ON/OFF ............................................................................................................ 23

4.4.5.4 Cable plan stepless.................................................................................................................... 24

4.4.5.5 Terminals in DCT 920-4E .......................................................................................................... 24

4.4.5.6 Circuit diagram stepless............................................................................................................. 25

5 Maintenance instructions ............................................................................................................................26

5.1 Cleaning.................................................................................................................................... 26

5.1.1 Fan............................................................................................................................................. 26

5.2 Recycling/Disposal .................................................................................................................. 26

6 Troubleshooting guide.................................................................................................................................27

7 Technical data...............................................................................................................................................29

7.1 ErP/Ecodesign.......................................................................................................................... 33

ECT 920 • DCT 920

Technical User Guide 5

1 Product description

ECT/DCT fans are supplied with an integrated motor and fan

blades cast in aluminum. ECT/DCT fans are used as ON/OFF fans.

ECT fans can also be used as a Triac regulated fan.

The fan is designed for mounting in exhaust units and wall exhaustion in livestock houses where the ventilation

system operates in the low-pressure range, i.e. in LPV, diffuse livestock houses and Combi-Tunnel livestock

houses.

The fans bear a CE marking and have a sturdy four-point suspension.

ECT 920 • DCT 920

6 Technical User Guide

2 Product survey

409150 DCT 920-1 ON/OFF fan 400V3 50Hz

Three fan blades, 3x400 V fan with aluminium fan blades which fits a duct

with an inside duct dimension of 920mm.

It is used as ON/OFF fan.

High output and good pressure stability.

409152 ECT 920-1E EC stepl. fan 230V1 50/60Hz

Three fan blades, 1x230 V fan with aluminium fan blades which fits a duct

with an inside duct dimension of 920mm. It is equipped with an EC motor

(internal fan speed controller).

It is used as stepless or ON/OFF fan.

High output and good pressure stability.

409153 DCT 920-2 ON/OFF fan 400V3 50Hz

Five fan blades, 3x400 V fan with aluminium fan blades which fits a duct

with an inside duct dimension of 920mm. Special fan blade coating for max-

imum protection.

It is used as ON/OFF fan.

High output and very pressure-stable. It is typically used in special systems

with common duct or the like. High output and noise level must be ex-

pected.

409159 DCT 920-2F VFD fan 400V3 50/60Hz

This product consists of the fan 409153 + a frequency converter.

The frequency controller reduces the power consumption of the individual

fan at partial load.

The frequency converter included is controlled via a 0-10 V signal.

A shielded cable is not used between the motor and the frequency con-

verter, as a sinus filter is incorporated into the frequency converter. The

supply to the frequency converter does not require a shielded cable either.

The distance between the frequency converter and the motor is not limited

to 2 m as is the case when DOL 38 is applied.

409158 DCT 920-4E EC stepl. fan 400V3 50/60Hz

Five fan blades, 3x400 V fan with aluminium fan blades which fits a duct

with an inside duct dimension of 920mm. It is equipped with an EC motor

(internal fan speed controller). Can be used for biological air cleaning as the

fan has a special fan blade coating for maximum protection.

It is used as stepless or ON/OFF fan.

High output and very pressure-stable. It is typically used in special systems

of high standards as regards pressure requirements. High power consump-

tion and noise level must be anticipated at maximum output.

ECT 920 • DCT 920

Technical User Guide 7

3 Mounting guide

3.1 Recommended tools

A list of the recommended tools for mounting purposes can be seen below.

Item Description

Cordless drill

Screwdriver bits

Drill kit

Multimeter

Utility knife

Side cutter

Pointed pliers

Screwdriver

Allen key kit

Ladder

ECT 920 • DCT 920

8 Technical User Guide

3.2 Positioning of fan in the exhaust unit

Place the fan legs in the duct's integrated holes.

The legs are secured in place with cable ties.

Check that the fan is turned correctly and according to

fan type.

Be careful, the fan may rotate if gripped by air flow.

3.3 Safety distance

If the distance from the floor to the fan blade is less than

270cm, mounting a protective mesh in the inlet bell

mouth may be required to meet the statutory require-

ments.

ECT 920 • DCT 920

Technical User Guide 9

4 Installation guide

4.1 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.

4.1.1 Disclaimer at retrofitting fans

In the case of retrofitting fans in an existing house, regardless of ON/OFF or LPC fans, SKOV recommends that

a local expert is involved in checking the electrical installations. The focus should be on cable dimensions, over-

load protections, local transformers, etc. It is of outmost importance to take the fan specifications into account

and, at the same time, ensure that local requirements are fulfilled.

4.1.2 Cabling in the exhaust unit

Drill a hole for the cable and pull it along a leg to the

same side as the winch motor. Seal the hole from the in-

side before the next duct/inlet is mounted.

ECT 920 • DCT 920

10 Technical User Guide

4.2 Adjusting the jumper and connection in the winch motor

Set the jumper on the PCB to give actuator the desired

function.

LED indication

OK = slow flashing

Error = quick flashing (10 times/second)

H1 Actuator controller or +24 V DC supply

H2 Actuator controller

H3 0 V

H6 +24 V DC supply

H7 0-10 V position feedback

H8 0 V

H9 Open collector (transistor output) is used for fan with motor

controller.

H10/11a and H12a relay output is used for fan without motor

controller.

ECT 920 • DCT 920

Technical User Guide 11

4.3 General information about circuit diagrams

Symbols are pursuant to the IEC/EN 60617 standard.

The classification of the symbols ("letter codes") on the symbols is pursuant to the IEC/EN 81346-2 standard.

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.

4.3.1 Color code

Letter Code Color Standard

BK Black

Color coding on wires are in accor-

dance with standard IEC 60757:

Letter codes to identify colors used

on drawings, diagrams, labelling,

etc.:

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

4.3.2 Power supply isolator

Power supply isolator

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

motor control.

4.3.3 Letter Code

The letter codes used in accordance with standard IEC/EN61346-2.

-F -K -M -Q -S -T -W

Protective

equipment

RCCB / Initial

fuse Protective

motor switch

Controller

Contactor

Fan

Motor

Power supply

isolator

Switch Motor con-

troller

Cable

ECT 920 • DCT 920

12 Technical User Guide

4.4 Cable plans and circuit diagrams

4.4.1 DCT 920-1 ON/OFF 400 V

4.4.1.1 Cable plan

Connection box

4.4.1.2 Terminals in DCT 920-1

ECT 920 • DCT 920

Technical User Guide 13

4.4.1.3 Circuit diagram

Example of terminal

number

For correct connection

see the setup menu

Show connection in

controller

Connection box

ECT 920 • DCT 920

14 Technical User Guide

4.4.2 ECT 920-1E EC stepless - ON/OFF 230 V

4.4.2.1 Cable plan ON/OFF

4.4.2.2 Terminals in ECT 920-1E

ECT 920 • DCT 920

Technical User Guide 15

4.4.2.3 Circuit diagram ON/OFF

Example of terminal number

For correct connection

see the setup menu

Show connection in controller

Winch motor

ECT 920 • DCT 920

16 Technical User Guide

4.4.2.4 Cable plan stepless

4.4.2.5 Terminals in ECT 920-1E

ECT 920 • DCT 920

Technical User Guide 17

4.4.2.6 Circuit diagram stepless

Example of terminal

number

For correct connection

see the setup menu

Show connection in

controller

Winch motor

ECT 920 • DCT 920

18 Technical User Guide

4.4.3 DCT 920-2 ON/OFF 400 V

4.4.3.1 Cable plan

Connection box

4.4.3.2 Terminals in DCT 920-2

ECT 920 • DCT 920

Technical User Guide 19

4.4.3.3 Circuit diagram

Example of terminal number

For correct connection

see the setup menu

Show connection in

controller

Connection box

ECT 920 • DCT 920

20 Technical User Guide

4.4.4 DCT 920-2F VFD 400 V

4.4.4.1 Cable plan

4.4.4.2 Terminals in DCT 920-2F

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Skov ECT 920/DCT 920 fans Technical User Guide

Skov ECT 920/DCT 920 fans Technical User Guide

Skov ECT 920/DCT 920 fans Technical User Guide

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