Skov DOL 278T Temperature Controlled Owner's manual

Brand: Skov

Model: DOL 278T Temperature Controlled

Type: Owner's manual

Skov DOL 278T Temperature Controlled is a device designed to provide optimum safety in livestock houses in the event of technical failures. It achieves this by using a separate temperature sensor and allowing for manual setting of the temperature limit for emergency opening. This means that the DOL 278T only opens as much as needed, preventing excessive heat loss or cold stress on livestock.

The DOL 278T is well-suited for harsh livestock house environments, being resistant to both climatic and electrical influences. It features a built-in 24 VDC motor power supply unit, maintenance-free battery, and charger. The system regulates every three minutes, opening shutters for varying amounts of time depending on the difference between the current house temperature and the set temperature limit.

DOL 278AT

Emergency Opening

Technical Manual

603923 • 2023-10-13

DOL 278AT

2 Technical Manual

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.

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 278AT

1 Product description ....................................................................................................................................... 4

2 Procedure........................................................................................................................................................ 5

3 Product survey ............................................................................................................................................... 6

4 Mounting guide............................................................................................................................................... 7

4.1 Mounting of climate sensors .................................................................................................... 8

5 Installation guide............................................................................................................................................ 9

5.1 Installation of battery................................................................................................................. 9

5.2 Installation of the TEST supply separator ............................................................................... 9

5.3 Cable dimensions for 24V DC depending on length ............................................................ 10

5.4 Setting the supply voltage on the power supply .................................................................. 10

5.5 Connection to the house controller ....................................................................................... 11

5.5.1 Setting of jumpers ...................................................................................................................... 12

5.5.1.1 Jumper setting for Combi-Tunnel mode..................................................................................... 12

5.6 Setup options at high power consumption ........................................................................... 13

5.7 Cable plan................................................................................................................................. 14

5.8 Wiring diagrams....................................................................................................................... 15

5.8.1 Emergency opening - Medium ................................................................................................... 15

5.8.2 Emergency opening - Large....................................................................................................... 16

5.8.3 Emergency opening - Temperature controlled and with DOL 278 ON/OFF ............................. 17

5.9 Number of fans and actuators on emergency opening........................................................ 18

5.10 Setting of house controller ..................................................................................................... 18

5.10.1 Active functions when the control fails ....................................................................................... 18

6 Testing........................................................................................................................................................... 20

6.1 Lamp indications ..................................................................................................................... 20

6.2 Testing the installation............................................................................................................ 21

6.3 Testing battery capacity.......................................................................................................... 22

6.3.1 Testing battery voltage............................................................................................................... 22

6.3.2 Testing the battery capacity with disconnected supply voltage/phase break............................. 22

6.4 Temperature Sensor Control Table........................................................................................ 23

6.4.1 Table relating to DOL 12 temperature sensor control................................................................ 23

7 Troubleshooting guide ................................................................................................................................ 24

8 Technical data .............................................................................................................................................. 25

8.1 Dimensioned sketch ................................................................................................................ 26

Technical Manual

DOL 278AT

4 Technical Manual

1 Product description

DOL 278T is an advanced emergency opening unit providing optimum safety in connection with technical fail-

ures. This is achieved by means of a separate temperature sensor and manual setting of the temperature limit

for emergency opening. DOL 278T opens only as much as needed.

DOL 278T is specially designed for harsh livestock house environments. This applies to both climatic and elec-

trical influences. The system has a built-in 24 VDC motor power supply unit, maintenance-free battery and

charger.

DOL 278T regulates every three minutes. If the house temperature exceeds the setting of the temperature but-

ton by e.g. one degree, the shutters open only for a few seconds every three minutes. If the house temperature

exceeds the setting of the temperature button by e.g. six degrees, the shutters open for several seconds every

three minutes.

With it own outside temperature sensor DOL 278T takes high summer temperatures into consideration. Thus,

when the house is already open due to summer temperatures, the DOL 278T does not trigger an emergency

opening alarm.

DOL 278T and its settings are monitored by the house controller. It triggers an alarm, for example if DOL 278T´s

temperature button for emergency opening has been set too high or if the battery voltage is too low.

Emergency operation the first 3 minutes after supply voltage is restored

If the supply voltage is interrupted DOL 278T takes over the control system from the house controller and DOL

278T can open the shutters if necessary (emergency operation). When the supply voltage returns and the

house controller starts up again, there will be a risk heat loss during cold periods (outside temperature of less

than 20°C) when shutters are opened during start-up.

To lower this heat loss the DOL 278T controls the winch motors during the first 3 minutes after the supply volt-

age is restored, while the house controller starts up again. After this period the house controller resumes con-

trol.

On the other hand, during hot periods (outside temperature over 20°C) the DOL 278T makes sure that the cli-

mate control is restored as soon as possible by starting the fans as the house controller starts up.

DOL 278T in warm climates/Combi-Tunnel

When DOL 278T is used with a Combi-Tunnel house controller the jumper is to be set to WARM, so that un-

wanted emergency opening is avoided when the house controller runs in tunnel mode.

The following occurs when DOL 278T is set to WARM:

• Emergency opening is not triggered for high livestock house temperatures at outside temperatures over

20°C.

• Emergency opening is still triggered at power failure.

• At outside temperatures below 20°C the DOL 278T works as normal.

DOL 278T in normal climate

The following occurs when DOL 278T is set to NORM:

• Emergency opening is triggered even if the outside temperature is over 20°C.

• Emergency opening is still triggered at power failure.

At high power consumption

When a high power consumption exceeding 8 A is required, the DOL 278T can be extended with DOL 278 ON/

OFF of 4.2 A, 8 A or 10 A. See section Setup options at high power consumption [}13].

A mini UPS Mini Power unit is available as an accessory. This unit enables the house controller to regulate ven-

tilation for a short period during a power failure so that emergency control via the emergency opening unit does

not need to take over. The mini UPS module can be connected to an alarm system so that alarms will be gener-

ated when the module is active.

DOL 278AT

Technical Manual 5

2 Procedure

This manual describes the mounting, installation and commissioning of a DOL 278T controlled emergency

opening system and is aimed primarily at the technicians and electricians who will be mounting, installing and

testing the emergency opening system.

The following checklist indicates the main points of the work flow regarding set up of the emergency opening

system.

Mounting

1. DOL 278T.

2. Temperature sensors.

Installation

1. Battery.

2. Test supply separator.

3. Setting the supply voltage.

4. Connect cables according to the wiring diagram.

5. Connection to the house controller.

6. Connecting supply voltage.

7. Setting of house controller.

Testing

1. DOL 278T.

2. Battery.

3. Temperature sensors.

Start-up

1. Setting

DOL 278AT

6 Technical Manual

3 Product survey

134692 DOL 278AMT-1 EmergencyOpen Temp Medium 4.2A

Temperature-controlled emergency opening in a one-house version.

Max. power consumption: 4.2 A

Battery: 4 Ah

Two temperature sensors are included (1 inside temperature sensor + 1

outside temperature sensor).

134693 DOL 278AMT-2 EmergencyOpen Temp Medium 4.2A

Temperature-controlled emergency opening in a two-house version.

Max. power consumption: 4.2 A

Battery: 4 Ah

Three temperature sensors are included (2 inside temperature sensors + 1

outside temperature sensor).

134694 DOL 278ALT-1 EmergencyOpen Temp Large 8A

Temperature-controlled emergency opening in a one-house version.

Max. power consumption: 8 A

Battery: 7 Ah

Two temperature sensors are included (1 inside temperature sensor + 1

outside temperature sensor).

134695 DOL 278ALT-2 EmergencyOpen Temp Large 8A

Temperature-controlled emergency opening in a two-house version.

Max. power consumption: 8 A

Battery: 7 Ah

Three temperature sensors are included (2 inside temperature sensors + 1

outside temperature sensor).

134792 Mini-UPS, Mini-Power, Universal

Five minutes' battery backup of house computer via emergency opening

battery.

For fitting or retrofitting in a emergency opening unit.

Used in areas where 230V mains failures frequently occur.

Use one Mini UPS per house controller.

Two Mini UPS can be mounted in an emergency opening unit.

134784 DOL 278 connecting cable 354 cm

The cable is used to connect the emergency opening to the house con-

troller if the supplied 134 cm cable is not long enough.

DOL 278AT

Technical Manual 7

4 Mounting guide

1. Drill holes in the bottom of the cabinet (A).

2. Place the emergency opening unit:

- close enough to the house controller for the rubber sleeve supplied (B) to fit neatly between them (the

emergency opening unit can be placed on either side of the house controller).

- so that there is enough space, particularly above the emergency opening unit for service setting (C) of the

front panel.

3. Knock out large knock-out pieces (D) from the house controller and the emergency opening unit and mount

the rubber sleeve in one of the holes.

4. If the ventilation plug (H) is removed, move it to the left side (I) to maintain the battery ventilation.

5. Mount the emergency opening unit using Ø5 screws and, if necessary, Ø8 wall plugs (E), so that the rubber

sleeve is squeezed approx. 10 mm.

6. Mount the rubber sleeve (B) so it is waterproof.

7. Run the cables through the rubber sleeve (B).

If space is inadequate right next to the house controller, the rubber sleeve can be left out, and the cables can be

extended and routed through M25 screwed cable connections (F).

Contactor or auxiliary relay (G) must not be installed in an emergency opening unit, as the battery

may explode in the event of a fault.

DOL 278AT

8 Technical Manual

4.1 Mounting of climate sensors

• Never use a plug on the DOL 12 temperature sensor as a bad connection here could have disas-

trous results.

• Never use shrink-on sleeves when splicing wires inside the livestock house. Use a contact box.

Placing of sensors inside the house

• Place the sensor in the middle of the livestock house.

• In case of animals on floor the sensor is placed 1 meter over the animals (make sure the animals cannot

reach sensors).

• In cages (poultry) the sensor is placed in the middle of the cage height 100 mm from the edge of the cage.

• When using Tunnel place the DOL 10 tunnel cooling sensor ¼ in the front zone see drawing.

Tunnel cooling sensor

• Remember that temperature, humidity, alarm and emergency sensors should be placed together, if possible

use board for sensors (are available as accessory).

Do not place the sensor Cause

Above housing equipment. The pigs can reach them.

Near cooling system. Water and humidity will affect the sensors.

In a drafty area.

So it is directly affected by the air intake.

Measures the wrong temperature in the live-

stock house.

Where sunrays can shine on the sensor through windows.

Take into account that the altitude of the sun varies with the

season/time of day.

Measures a too high temperature. Ventilation

level too high.

Above or in a position where it is otherwise affected by the

heating system/heating pipe.

The heat moves up towards the sensors.

Placing of sensors outside the house

• In Combi-Tunnel systems radiation shield must be mounted, in LPV and tunnel systems it is recommended

to mount the radiation shield (available as accessories). Sensor with radiation shield must be placed in the

open air.

• Sensor without radiation shield must be placed on the shady side of the house to avoid the sun. Take into

account that the altitude of the sun varies with the season/time of day.

• As much in the open as possible, but protected from rain and snow.

DOL 278AT

Technical Manual 9

5 Installation guide

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.

5.1 Installation of battery

Use only VRLA battery set 18 V (3 x 6 V) as the battery otherwise may explode.

Battery module 4 Ah for emergency opening unit Medium.

Tick and attach the supplied battery date label to the outside of the cabinet.

Place the battery on the shelf in the cabinet.

Battery module 7 Ah for emergency opening unit Large.

5.2 Installation of the TEST supply separator

Place the TEST supply separator next to the emergency opening unit and the house controller for weekly testing

of the emergency opening unit.

A two-pole supply separator must be used if the two-house controller is supplied from separate phases. A three-

pole supply separator must be used at several house controllers for the same emergency opening unit.

The emergency opening unit must be supplied from the same phase as the house controller.

DOL 278AT

10 Technical Manual

5.3 Cable dimensions for 24V DC depending on length

2 A motor 4 A motor 8 A motor 10 A motor

AWG Cross

section

Length Length Length Length

16 1.5 mm20 - 41 m 0 - 20 m - -

14 2.5 mm242 – 68 m 21 – 34 m 0 – 17 m -

11 4 mm269 - 109 35 – 54 m 18 – 27 m 0 – 22 m

88 mm2110 - 217 55 – 109 m 28 – 54 m 23 – 43 m

Example Note the limited maximum distance between emergency opening/house controller and motor of

max. 22 meters by 4 mm2 cable at 10 A motor.

5.4 Setting the supply voltage on the power supply

Before you connect supply voltage, it is important to set the voltage in the power supply so that it

corresponds to the voltage level in the local house.

1. Set the voltage in the power supply.

2. Connect the supply voltage.

200-230 V Leave the plug in (factory setting)

100-115 V Move the plug to 100-115 V

Emergency opening Medium 4 A: Supply voltage must be set on one module.

Emergency opening Large 8 A: Supply voltage must be set on two modules.

DOL 278AT

Technical Manual 11

5.5 Connection to the house controller

1. Remove the jumper plug (A) (place it in the bottom of the cabinet).

2. Connect the enclosed connecting cable (B).

3. Fasten the six conductors in the terminal block (C) Q1-Q5 and F6.

4. Connect the thirteen-pole cable in the emergency opening (D) in the terminal block F6 and T1-T12 (the ca-

ble can be replaced by a longer one (max. 3 m.), run it through the cable glands). Connect wire 1 to T1 etc.

See sectionWiring diagrams [}15].

5. Set jumpers (E) in the house controller, see section Setting of house controller [}18].

Additional I/O module type 3

For additional I/O module type 15,

the jumper is factory set to ON.

DOL 278AT

12 Technical Manual

5.5.1 Setting of jumpers

Jumper adjustment should be carried out while there is no voltage across the PCB.

Function Jumper Setting (period for air inlet)

Outside tempera-

ture compensa-

tion

J7 (F) OFF: Outside temperature compensation not active

ON: Outside temperature compensation active (fac-

tory setting)

Run time

(For complete

opening of inlet)

J8 (G) 2 min. (minutes) for: DA 74, DA 75-1, DA 75-3 winch

motors (factory setting)

4 min. (minutes) for: DA 175, DA 75-6, DA 75-12

(slow) winch motors

5.5.1.1 Jumper setting for Combi-Tunnel mode

In areas with a hot climate, the emergency opening is often used in combination with Combi-Tunnel house con-

trollers. In such a situation emergency opening in Tunnel mode is not desired as that will destroy the ventilation

chill effect.

The setting can be found on the PCB at the top of the cover.

NORM = Normal

WARM = Combi-Tunnel-mode (for warm climatic zones)

The jumper should be installed while there is no voltage across the PCB. Remove the supply voltage by

dismantling the flat cable from the relay panel to the cover.

Ensure that the jumper is positioned correctly, as it otherwise can damage the printed circuit board when power-

ing up.

Check setup:

1. Connect voltage

2. Light-emitting diodes for battery voltage:

•WARM/Combi-Tunnel mode: Red light-emitting diode. Flashes rapidly (0.5 sec.) after start-up.

•NORM/Normal emergency opening: Green light-emitting diode. Flashes rapidly (0.5 sec.) after start-up.

In the WARM/Combi-Tunnel mode the DOL 278T does not allow for emergency opening for high inside temper-

ature when the outside temperature is above 20 °C. It will, however, still allow for emergency opening at power

failure.

DOL 278AT

Technical Manual 13

5.6 Setup options at high power consumption

When the distance between the climate controller and wall fan or actuator is long, you can avoid long, thick low-

power cables by placing DOL 278 ON/OFF close to the power-consuming units.

An unlimited number of DOL 278 ON/OFF can be installed close to wall fans and actuators to supply 24 V DC.

DOL 278 ON/OFF at wall fan

DOL 278T at climate controller

24V / 4A, 8A or 10A supply for actuators

If fans and actuators use DOL 278T, the jumper for ‘Emergency opening ON/OFF’ must be set to ON on the re-

lays in the climate controller.

On additional I/O module type 15 all relays for ‘Emergency opening ON/OFF’ are set to ON from the factory.

If fans and actuators use DOL 278 ON/OFF, the jumper for ‘Emergency opening ON/OFF’ must be set to OFF

on the relays in the climate controller.

Use additional I/O module type 3 with jumper settings option when expanding number of relays in the climate

controller.

DOL 278AT

14 Technical Manual

5.7 Cable plan

House 1 House 2 Shady side

DOL 12 outside temperature

DOL 12 temperature

DOL 114

temperature /

humidity

DOL 114

temperature / humidity

DOL 12 temperature

Service room

Controller Emergency opening

Power supply

Only two-house

DOL 278AT

Technical Manual 15

5.8 Wiring diagrams

5.8.1 Emergency opening - Medium

Emergency opening

- Medium

Winch motor - chimney

Winch motor - wall

House controller

DOL 278AT

16 Technical Manual

5.8.2 Emergency opening - Large

Emergency opening -

Large

Winch motor - chimney

Winch motor - wall

House controller

DOL 278AT

Technical Manual 17

5.8.3 Emergency opening - Temperature controlled and with DOL 278 ON/

OFF

DOL 278T placed at climate controller and DOL 278 ON/OFF placed at fan. DOL 278 ON/OFF is used as extra

power supply.

No. 2

No. 1

No.

Fuse

DOL 278 ON/OFF no. 2

BF 50 LPC actuator

(ON/ OFF emergency opening)

DA 1700 dual actuator

(ON/OFF emergency opening)

DOL 278 ON/OFF no. 1

Supply for

actuators

24 V DC supply cables

See table 5.3 cable dimensions

Control signal

1.5 mm2 (16AWG)

DA 600/ 820 with

DA 74C winch motor

(Temperature controlled

emergency opening)

DA 175 actuator

(Temperature controlled

emergency opening)

Emergency opening

Jumper in climate controller

Climate controller

Fuse

Supply for

actuators

Fuse

DOL 278AT

18 Technical Manual

5.9 Number of fans and actuators on emergency opening

The table states the maximum number of fans and actuators that can be connected to DOL 278 ON/OFF, when

DOL 278 ON/OFF is used as additional 24 V DC power supply.

DOL 278AM emergency

opening ON/OFF

Medium,

4.2A

DOL 278AL emergency

opening ON/OFF Large,

DOL 278AXL emergency

opening ON/OFF X-

Large,

10A

BF 50 LPC fan 5 10 12

BF 50 ON/OFF fan 4 8 10

DA 1700 LPC and ON/OFF

dual actuator

3* 6* 7

DA 1700 LPC and ON/OFF

winch motor

30* 60* 70

DA 600/ 820 – 74C 40 80 100

DA 75A-6 245

DA 175-300 actuator 4 8 10

DA 175-600 actuator 245

* DA 1700 shutter and actuators must not be controlled by signal from temperature controlled emergency open-

ing. They must always be configured as ON/OFF emergency opening.

DA 75 winch motors are special and cannot be used when placing the DOL 278 ON/OFF next to the winch mo-

tor. DA 75 must be connected and supplied via thick cables from the relays of the climate controller. This is

most efficiently done by or placing the DOL 278 ON/OFF or DOL 278T next to the climate controller.

The documentation for the individual products shows the power consumption to be used when calculating the

total power consumption for the emergency opening system. It is important that the maximum consumption for

DOL 278 ON/OFF and DOL 278T is and not exceeded.

5.10 Setting of house controller

5.10.1 Active functions when the control fails

Jumpers for emergency opening

In connection with the installation of the emergency opening

system, the jumpers of the main module and the I/O module

must be set as indicated at the end of the house controller’s

menu Technical | Setup | Show connection.

The emergency opening system overrules functions only where the jumper is set to ON (e.g. winch mo-

tors and MultiStep steps).

When installing MultiStep air outlet and side cooling, you must decide how these functions is to react in an

emergency situation, see Technical Manual for the house controller.

MultiStep air outlet

DOL 278AT

Technical Manual 19

Yes: When the control fails, the air outlet is active.

No: When the control fails, the air outlet is inactive.

Side cooling

Yes: When the control fails, side cooling is active and runs until

the emergency situation is over.

No: When the control fails, the side cooling is not active.

DOL 278AT

20 Technical Manual

6 Testing

6.1 Lamp indications

Flashing sequence Cause

2 sec. - endless

Outdoor temperature compensation active:

Switches on in the relevant side(s) (yellow).

0.1 sec./1 sec. - 3 sec.

Misplaced outside sensor:

Move the outside sensor away from the sunlight.

Flashes in both sides (yellow).

0.1 sec./1 sec.

Short-circuited or disconnected outdoor tempera-

ture sensor:

Flashes in both sides (yellow).

1 sec./1 sec.

Blocked by falling inside temperature:

Flashes on the relevant side(s) (yellow).

0.1 sec./1 sec.

Short-circuited or disconnected indoor temperature

sensor:

Flashes on in the relevant side(s) (red).

2 sec. - endless

Emergency opening:

Switches on in the relevant side(s) (red).

As long as the emergency opening is active.

2- 80 sec.

Opens:

Switches on in the relevant side(s) (green).

While motor is opening.

0.1 sec./0.5 sec.

Power-ON indication NORM / WARM setting:

Flashing (green) Power-ON = NORM = Normal cold cli-

mate.

Flashing (red) Power-ON = WARM = Combi-Tunnel

warm climate.

5- 10 sec. 1 sec./1 sec.

Phase break/mains failure 115/230 V:

The relevant battery lamp is flashing (green, yellow or

red) after 5-10 sec.

Both emergency opening lamps switches on (red).

0.5 sec./0.5 sec.

3 min.

Maintain emergency opening for 3 minutes

After phase break/power failure has been restored

(when outside temp. is < 20’C).

In the meantime emergency opening lamps lit (red).

The relevant battery lamp is flashing (green, yellow or

red).

Opening lamps are flashing on both sides (green).

Page is loading ...

Skov DOL 278T Temperature Controlled Owner's manual

Skov DOL 278T Temperature Controlled Owner's manual

Skov DOL 278T Temperature Controlled Owner's manual

Related papers

Other documents