Skov DOL 38-2 Manual

DOL 38-2 Frequency
Converter
Technical User Guide
604277 • 2022-07-01
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DOL 38-2 Frequency Converter
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.

DOL 38-2 Frequency Converter
Technical User Guide
1 Product description ....................................................................................................................................... 5
2 Product survey ............................................................................................................................................... 6
3 Mounting guide............................................................................................................................................... 7
3.1 Recommended tools.................................................................................................................. 7
3.2 Position of motor controller/frequency converter .................................................................. 8
3.3 Mounting distances for the motor controller/frequency converter....................................... 8
3.4 Position of motor controller/frequency converter .................................................................. 9
4 Installation guide.......................................................................................................................................... 10
4.1 Electrical connection............................................................................................................... 10
4.1.1 Disclaimer at retrofitting fans ..................................................................................................... 10
4.1.2 Mains supply dimensioning regarding harmonic distortion ........................................................ 10
4.1.3 Overvoltage protection............................................................................................................... 10
4.1.4 Cabling in the exhaust unit......................................................................................................... 11
4.1.5 Cabling into the motor controller/frequency converter ............................................................... 11
4.2 Connection in the LPC motor controller/frequency converter ............................................ 12
4.2.1 Terminals for power supply........................................................................................................ 13
4.2.2 Terminals for supply of the fan motor ........................................................................................ 13
4.2.3 Signal terminals ......................................................................................................................... 14
4.2.4 Terminals on relay module......................................................................................................... 14
4.3 LED indication on the motor controller/frequency converter.............................................. 15
4.4 Alarms....................................................................................................................................... 15
4.5 Adjusting the jumper and connecting the shutter................................................................ 16
4.6 General information about circuit diagrams ......................................................................... 17
4.6.1 Color code.................................................................................................................................. 17
4.6.2 Power supply isolator................................................................................................................. 17
4.6.3 Letter code ................................................................................................................................. 17
4.7 Cable plans and circuit diagrams........................................................................................... 18
4.7.1 DOL 38-2 with fan ...................................................................................................................... 18
4.7.1.1 Cable plan.................................................................................................................................. 18
4.7.1.2 Circuit diagram........................................................................................................................... 19
4.7.2 DOL 38-2 with DA 74CV and DA 600 fan .................................................................................. 20
4.7.2.1 Cable plan.................................................................................................................................. 20
4.7.2.2 Terminals in DA 74CV ............................................................................................................... 20
4.7.2.3 Circuit diagram........................................................................................................................... 21
4.7.2.4 Circuit diagram - thermal cutout................................................................................................. 22
4.7.3 DOL 38-2 and DA 600 fan with reverse ..................................................................................... 23
4.7.3.1 Cable plan.................................................................................................................................. 23
4.7.3.2 Circuit diagram........................................................................................................................... 24
4.7.4 DOL 38-2 and DA 600 fan with alarm ........................................................................................ 25
4.7.4.1 Cable plan.................................................................................................................................. 25
4.7.4.2 Circuit diagram........................................................................................................................... 26
5 Maintenance instructions ............................................................................................................................ 27
5.1 Cleaning.................................................................................................................................... 27
5.1.1 Fan............................................................................................................................................. 27
5.1.2 Motor controller/frequency converter ......................................................................................... 27
5.2 Recycling/Disposal .................................................................................................................. 27
6 Troubleshooting guide ................................................................................................................................ 28
7 Technical data .............................................................................................................................................. 30
7.1 Dimensioned sketch ................................................................................................................ 31

DOL 38-2 Frequency Converter
Technical User Guide 5
1 Product description
DOL 38-2 is a sturdy frequency converter for three-phase fans.
DOL 38-2 is controlled by a 10--0 V signal from a climate controller.

DOL 38-2 Frequency Converter
6 Technical User Guide
2 Product survey
110451 DOL 38-2 VFD 4.5A 230V1 50/60Hz
Frequency converter is used for regulating three-phase fans.
The frequency converter is controlled via a 10-0 V signal.
The distance between the frequency converter and fan should not exceed 5
m (shielded cable).
409145 Thermal protection for fan 230 V with alarm contact
For the protection of a DA 600 fan with thermal cutout.

DOL 38-2 Frequency Converter
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
Cable clip pliers
Side cutter
Pointed pliers
Screwdriver
Allen key kit
Ladder

DOL 38-2 Frequency Converter
8 Technical User Guide
3.2 Position of motor controller/frequency converter
Motor controller/frequency converter must not be built-in
or covered and must be mounted on a solid, level sur-
face.
In order to uphold protection classifications, access and
cooling, the motor controller/frequency converter must
be positioned as shown in section Mounting distances
for the motor controller/frequency converter [}8].
3.3 Mounting distances for the motor controller/frequency converter
In order to ensure access of cables and cooling of the
motor controller/frequency converter, the distances to
the surroundings must be met.

DOL 38-2 Frequency Converter
Technical User Guide 9
3.4 Position of motor controller/frequency converter
The motor controller/frequency converter is positioned
so that the ambient temperature is between ÷ 40 °C and
+ 50 °C.
Mount the motor controller/frequency converter as close
to the fan as possible.
The 2 m cable included must not be extended.
However, for fan 1x230 V, a motor cable on 5 m can be
ordered if the 2 m is not sufficient.
The controller/frequency converter can be mounted on a
wooden plate fastened to a rafter on the ceiling or di-
rectly on the chimney.

DOL 38-2 Frequency Converter
10 Technical User Guide
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 fans, LPC fans or frequency convert-
ers SKOV recommends that a local expert is involved in checking the electrical installations. The focus should
be on cable dimensions, overload 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 Mains supply dimensioning regarding harmonic distortion
LPC motor controllers and frequency converters function like any other electronic power converter by converting
AC to DC. As this conversion produces a non-sinusoidal current, the mains supply for the controller is affected
by harmonic distortion.
The electrician or the user of the equipment must ensure, possibly through contact with the supply company,
that the equipment is connected to a properly sized mains supply.
4.1.3 Overvoltage protection
SKOV A/S equipment are protected for high level of surge transient, but in some cases, specially in areas with
frequent lightning strikes and power outage, additional protection is necessary. To reduce the risk of damaging
the electronic equipment by large surge overvoltage, it is therefore recommended, always to install Surge Pro-
tection Devices (SPD) in the mains supply.
As a minimum a Type 2/Class II device should be installed in each livestock house wiring box. A device of
8/20us - 40kA/phase or higher is recommended.
In areas with a high amount of surge overvoltage a Type 1/Class I device is reccomended to be installed at the
transformer/ATS as the first protection device, together with Type 2 in each livestock house wiring box as sec-
ond protection device. A Type 1 device of 10/350us - 25kA/phase or higher is are recommended.
Local electrical engineers must be consulted for correct dimensioning and installation of the SPD device.
Figure1: Example of installation of SPD