Skov DA 820 LPC -3 Manual

DA 820 LPC -3
Fans
Technical User Guide
604478 • 2022-01-13
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DA 820 LPC -3
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.

DA 820 LPC -3
Technical User Guide
1 Product description........................................................................................................................................6
2 Product survey ...............................................................................................................................................7
2.1 DA 820 LPC -3 ........................................................................................................................... 7
2.2 LPC accessories ........................................................................................................................ 8
3 Mounting guide...............................................................................................................................................9
3.1 Recommended tools.................................................................................................................. 9
3.2 Positioning of fan in the exhaust unit.................................................................................... 10
3.3 Safety distance......................................................................................................................... 10
3.4 Position of motor controller.................................................................................................... 11
3.5 Mounting distances for the motor controller ........................................................................ 11
3.6 Position of motor controller.................................................................................................... 11
4 Installation guide ..........................................................................................................................................12
4.1 Electrical connection............................................................................................................... 12
4.1.1 Disclaimer at retrofitting fans ..................................................................................................... 12
4.1.2 Mains supply dimensioning regarding harmonic distortion ........................................................ 12
4.1.3 Overvoltage protection............................................................................................................... 12
4.1.4 Cabling in the exhaust unit......................................................................................................... 13
4.1.5 Cabling into the motor controller ................................................................................................ 13
4.2 Connection in the LPC motor controller................................................................................ 14
4.2.1 Terminals for one-phase supply................................................................................................. 15
4.2.2 Terminals for three-phase supply .............................................................................................. 15
4.2.3 Terminals for power supply of fan.............................................................................................. 15
4.2.4 Signal terminals ......................................................................................................................... 16
4.3 LED indication on display ....................................................................................................... 17
4.4 Operation .................................................................................................................................. 17
4.4.1 Change 10-0 V analog input into 0-10 V.................................................................................... 19
4.5 Adjusting the jumper and connection in the winch motor ..................................................21
4.6 General information about circuit diagrams ......................................................................... 22
4.6.1 Color code.................................................................................................................................. 22
4.6.2 Power supply isolator................................................................................................................. 22
4.6.3 Letter Code ................................................................................................................................ 22
4.7 Cable plans and circuit diagrams........................................................................................... 23
4.7.1 Circuit diagrams for OFF/AUTO/ON switch ............................................................................... 23
4.7.1.1 Control voltage (LPC with DA 74CO)......................................................................................... 23
4.7.1.2 Control voltage (LPC with DA 74CV) ......................................................................................... 24
4.7.2 DA 820 LPC -3 .......................................................................................................................... 25
4.7.2.1 Cable plan.................................................................................................................................. 25
4.7.2.2 Terminals in LPC 230 V fan ....................................................................................................... 25
4.7.2.3 Circuit diagram........................................................................................................................... 26
4.7.3 DA 820 LPC -3 230 V with DA 74CO ON/OFF ......................................................................... 27
4.7.3.1 Cable plan.................................................................................................................................. 27
4.7.3.2 Terminals in LPC 230 V fan ....................................................................................................... 27
4.7.3.3 Terminals in DA 74CO ............................................................................................................... 28
4.7.3.4 Circuit diagram .......................................................................................................................... 28
4.7.4 DA 820 LPC -3 230 V with thermal cutout and DA 74CO ON/OFF .......................................... 29
4.7.4.1 Cable plan.................................................................................................................................. 29
4.7.4.2 Terminals in LPC 230 V fan with thermal cutout........................................................................ 29
4.7.4.3 Terminals in DA 74CO ............................................................................................................... 30
4.7.4.4 Circuit diagram .......................................................................................................................... 30
4.7.5 DA 820 LPC -3 230 V with DA 74CV stepless .......................................................................... 31
4.7.5.1 Cable plan.................................................................................................................................. 31
4.7.5.2 Terminals in LPC 230 V fan ....................................................................................................... 31
4.7.5.3 Terminals in DA 74CV ............................................................................................................... 32
4.7.5.4 Circuit diagram .......................................................................................................................... 32

DA 820 LPC -3
4.7.6 DA 820 LPC -3 230 V with thermal cutout and DA 74CV stepless ........................................... 33
4.7.6.1 Cable plan.................................................................................................................................. 33
4.7.6.2 Terminals in LPC 230 V fan with thermal cutout........................................................................ 33
4.7.6.3 Terminals in DA 74CV ............................................................................................................... 34
4.7.6.4 Circuit diagram .......................................................................................................................... 34
4.7.7 DA 820 LPC -3 400 V with DA 74CO ON/OFF ......................................................................... 35
4.7.7.1 Cable plan.................................................................................................................................. 35
4.7.7.2 Terminals in LPC 400 V fan ...................................................................................................... 35
4.7.7.3 Terminals in DA 74CO ............................................................................................................... 36
4.7.7.4 Circuit diagram .......................................................................................................................... 36
4.7.8 DA 820 LPC -3 400 V with DA 74CV stepless .......................................................................... 37
4.7.8.1 Cable plan.................................................................................................................................. 37
4.7.8.2 Terminals in LPC 400 V fan ...................................................................................................... 37
4.7.8.3 Terminals in DA 74CV ............................................................................................................... 38
4.7.8.4 Circuit diagram .......................................................................................................................... 38
4.7.9 DA 820 LPC -3/DA 74CV stepless with reverse ....................................................................... 39
4.7.9.1 Cable plan.................................................................................................................................. 39
4.7.9.2 Circuit diagram .......................................................................................................................... 40
4.7.10 DA 820 LPC/DA 74CV stepless with alarm relay ...................................................................... 41
4.7.10.1 Cable plan.................................................................................................................................. 41
4.7.10.2 Circuit diagram........................................................................................................................... 42
5 Maintenance instructions ............................................................................................................................43
5.1 Cleaning.................................................................................................................................... 43
5.1.1 Fan............................................................................................................................................. 43
5.1.2 Motor controller .......................................................................................................................... 43
5.2 Recycling/Disposal .................................................................................................................. 43
6 Trouble shooting instructions.....................................................................................................................44
6.1 Resetting errors ....................................................................................................................... 46
7 Technical data...............................................................................................................................................47
7.1 DA 820 LPC -3 1x230 V ........................................................................................................... 47
7.1.1 ErP/Ecodesign DA 820 LPC -3 1x230 V ................................................................................... 49
7.2 DA 820 LPC -3 3x400 V ............................................................................................................ 50
7.2.1 Erp/Ecodesign DA 820 LPC -3 3x400 V ................................................................................... 52
7.3 Dimensioned sketch ................................................................................................................ 53
7.3.1 DA 820 LPC -3 .......................................................................................................................... 53
Technical User Guide

DA 820 LPC -3
6 Technical User Guide
1 Product description
An LPC (Low Power Consumption) fan is an energy efficient fan
unit consisting of a PM (Permanent Magnet) motor with matching
motor control and optimized fan blade design for LPC and Dynamic
MultiStep systems.
All variants of LPC fans are completed at the factory, so both the
motor and fan blade match the current application.
The fans are designed for mounting in exhaust units and wall exhaustion in livestock houses where the ventila-
tion system operates in the low-pressure range, i.e. in LPV, diffuse livestock houses and Combi-Tunnel live-
stock houses.
The fans bear a CE marking and have a sturdy four-point suspension.

DA 820 LPC -3
Technical User Guide 7
2 Product survey
2.1 DA 820 LPC -3
445126 DA 820 LPC 10-3 fan 230V1 50/60Hz
445128 DA 820 LPC 12-3 fan 230V1 50/60Hz
The motor controller is to receive a 10-0 V signal.
The fan comes with a 2-meter cable for the wiring between motor and motor
controller.
445983 DA 820 PM motor cable 230V LPC 5 m can be ordered, if 2 m is in-
sufficient.
The power supply to the motor controller does not require a shielded cable.
It comes with motor controller, fan blades and fan suspension.
3-blade, 230 V adjustable fan.
To be applied if you require a low energy consumption, both at partial and
full load.
ErP 2015 approved.
DA 820 LPC 10-3 should not be used for negative pressure higher than 90
Pa.
DA 820 LPC 12-3 should not be used for negative pressure higher than 130
Pa.
445127 DA 820 LPC 10-3 fan 400V3 50/60Hz
445129 DA 820 LPC 12-3 fan 400V3 50/60Hz
The motor controller is to receive a 10-0 V signal
Motor 1.2 kW.
The fan comes with a 2-meter cable for the wiring between motor and motor
controller.
The power supply to the motor controller does not require a shielded cable.
It comes with motor controller, fan blades and fan suspension.
3-blade, 400 V adjustable fan.
To be applied if you require a low energy consumption, both at partial and
full load.
ErP 2015 approved.
DA 820 LPC 10-3 should not be used for negative pressure higher than 90
Pa.
DA 820 LPC 12-3 should not be used for negative pressure higher than 130
Pa.

DA 820 LPC -3
8 Technical User Guide
445136 DA 820 LPC 10-3 fan 230V1 50/60Hz TH
The fan is the same as part no. 445126, but includes a thermal cutout.
445139 DA 820 LPC 12-3 fan 230V1 50/60Hz TH
The fan is the same as part no. 445129, but includes a thermal cutout.
The thermal circuit breaker ensures that the motor disconnects if it gets too
hot. For safety reasons, the fan must be connected manually before it can
be activated again.
Fans with thermal circuit breakers are normally only used in places where
this is a legal requirement, e.g. in Sweden.
ErP 2015 approved.
2.2 LPC accessories
409145 Thermal protection for fan 230 V with alarm contact
409147 Thermal protection for fan 400 V with alarm contact
For the protection of a LPC fan with thermal cutout.
445983 DA 820 PM motor cable 230V LPC 5m
Is used for LPV fan 1x230 V in cases where 2 m cable is insufficient.

DA 820 LPC -3
Technical User Guide 9
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

DA 820 LPC -3
10 Technical User Guide
3.2 Positioning of fan in the exhaust unit
The connection box on the fan must face downwards when the fan is used as a wall exhaustion.
Mount the four fan suspensions using 6 x 25 screws in
the marked positions. Be careful not to over-tighten the
screws.
DA- fans must face the fan blades downward.
Position the legs of the fan in the four fan suspension
units.
Fasten all four fan supports using cable ties around the
fan suspension and rubber suspension.
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.

DA 820 LPC -3
Technical User Guide 11
3.4 Position of motor controller
Motor controller must not be built-in or covered and
must be mounted on a solid, level surface.
In order to uphold protection classifications, access and
cooling, the motor controller must be positioned as
shown in section Mounting distances for the motor
controller [}11].
3.5 Mounting distances for the motor controller
200 mm
200 mm
10 mm 10 mm
In order to ensure access of cables and cooling of the
motor controller, the distances to the surroundings must
be met.
Distance to top and bottom = 200 mm
Distance to both sides = 10 mm
3.6 Position of motor controller
The motor controller is positioned so that the ambient
temperature is between ÷ 20°C and + 40°C and pro-
tected against direct sunlight.
Temperature, operating ÷ 20 °C to + 40.
Start temperature ÷ 15 °C to + 40.
Mount the motor controller as close to the fan as possi-
ble.
The 2 m cable included must not be extended.
However, a motor cable of 5 m can be ordered if the 2 m
is not sufficient.
The controller can be mounted on a wooden plate fas-
tened to a rafter on the ceiling or directly on the chimney.

DA 820 LPC -3
12 Technical User Guide
4 Installation guide
4.1 Electrical connection
Wait 10 minutes for the capacitors to discharge to a safe voltage level before servicing and trou-
bleshooting.
Failure to observe this precaution could result in serious injury or loss of life.
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

DA 820 LPC -3
Technical User Guide 13
4.1.4 Cabling in the exhaust unit
Drill a hole in the exhaust unit duct for the fan cable and
lay it along a support to the same side as the motor con-
troller.
4.1.5 Cabling into the motor controller
In order to prevent water from running into the motor
controller via cables and screwed connections, the ca-
bling must be carried out so that it can stand water
around the cable in the gasket of the screwed connec-
tion.

DA 820 LPC -3
14 Technical User Guide
4.2 Connection in the LPC motor controller
(A)
(D)
(F)
(C)
(B) (E)
(G)
(E)
(I)
(H)
(I)
(I)
(I)
(H)
(E)
(A) Supply terminals one-phase (L1/L, L2/N). Three-phase (L1/L, L2/N, L3)
(B) Screw for ground wire
(C) Motor connection terminals (U, W, V)
(D) Screw for ground wire
(E) Shield connection to fan cable
(F) Signal terminals
(G) Factory mounted ground wire
(H) Bottom plate with cable glands
(I) Screws for mounting of bottom plate
Before mounting the bottom plate, bend up the shield connection (E) so that it can go into the bottom plate.
Bend up the two sides of the shield connection.

DA 820 LPC -3
Technical User Guide 15
4.2.1 Terminals for one-phase supply
Supply one-phase.
L1/L = phase
L2/N = neutral
Mount the supplied cable clip on the ground wire and
mount it under the ground screw.
4.2.2 Terminals for three-phase supply
Supply three-phase.
L1/L = phase
L2/N = phase
L3 = phase
Mount the supplied cable clip on the ground wire and
mount it under the ground screw.
4.2.3 Terminals for power supply of fan
Connection from motor controller to fan motor.
U = brown
W = gray
V = black
Mount the ground wire under the ground screw.
Remember that the shield on the fan cable must have an
electrical connection to the motor controller.
The shield connection is clamped around the shield on
the fan cable.

DA 820 LPC -3
16 Technical User Guide
4.2.4 Signal terminals
*Ground
Alarm NC
Signal from house controller (factory setting 10-0 V) in case of change, see section
4.4.1
*Ground (connected to ground screw)
Stop = open
Start = GND (Jumper connection between terminal 8 and GND)
Max. 30 V DC / 24 V AC
*Ground
Normal = open
Reverse = GND (Jumper connection between terminal 15 and GND)
* All GND (ground) are electrically connected and have the same potential (0V) and can be used arbitrarily.

DA 820 LPC -3
Technical User Guide 17
4.3 LED indication on display
To display certain warnings, the motor controller has a
built-in 6-digit 7-segment LED display.
LED segments Display Meaning
a, b, c, d, e, f All flashing Overload, the motor output current
exceeds the maximum limit
a and f Flashes alternately Power failure (V AC supply missing)
4.4 Operation
Navigate Used to display real-time information, to access and exit parameter
edit mode and to store parameter changes.
Up Used to increase parameter values in parameter editing mode.
Down Used to reduce parameter values in parameter editing mode.
Reset/Stop Used to reset an interrupted motor controller.
Start Not used.
StoP
Motor controller stopped / interrupted.

DA 820 LPC -3
18 Technical User Guide
H 50.0
Motor controller is activated / running, display shows
the output frequency [Hz].
A 2.3
Press Navigate. The display will show the motor cur-
rent [A].
P 1.50
Press Navigate. The display will show the motor power
[kW].
1500
Press Navigate. The display will show the motor speed
[RPM].

DA 820 LPC -3
Technical User Guide 19
4.4.1 Change 10-0 V analog input into 0-10 V
StoP
The factory setting is 10-0 V.
Press and hold the Navigate key for more than 2 sec-
onds.
P-16
Press Up and select P-16.
U 10-0
Press Navigate.
U 0-10
Press Down 7 times and select U 0-10.
Note that the display must show U 0-10.

DA 820 LPC -3
20 Technical User Guide
P-16
Press Navigate. The new setting is now saved.
StoP
Press and hold the Navigate key for more than 2 sec-
onds to return to operating mode.