Skov 278A User manual

DOL 278A ON/OFF
Emergency Opening
Technical Manual
603919 • 2023-10-16

DOL 278A ON/OFF
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 278A ON/OFF
1 Product description ....................................................................................................................................... 4
2 Procedure........................................................................................................................................................ 5
3 Product survey ............................................................................................................................................... 6
4 Mounting guide............................................................................................................................................... 7
5 Installation guide............................................................................................................................................ 8
5.1 Installation of battery................................................................................................................. 8
5.2 Installation of the TEST supply separator ............................................................................... 8
5.3 Cable dimensions for 24V DC depending on length ............................................................ 10
5.4 Setting the supply voltage on the power supply .................................................................. 10
5.5 Setup options at high power consumption ........................................................................... 11
5.6 Wiring diagrams....................................................................................................................... 12
5.6.1 Emergency opening - Medium ................................................................................................... 12
5.6.2 Emergency opening - Large....................................................................................................... 13
5.6.3 Emergency opening - Xtra Large ............................................................................................... 14
5.6.4 Emergency opening at high power consumption ....................................................................... 15
5.7 Number of fans and actuators on emergency opening........................................................ 16
6 Testing........................................................................................................................................................... 17
6.1 Testing the installation............................................................................................................ 17
7 Troubleshooting guide ................................................................................................................................ 18
8 Technical data .............................................................................................................................................. 19
8.1 Dimensioned sketch ................................................................................................................ 20
Technical Manual

DOL 278A ON/OFF
4 Technical Manual
1 Product description
DOL 278 ON/OFF is a simple emergency opening unit, which in combination with the house controller can
emergency open in case of simple types of error. In case of emergency, the system opens completely. Emer-
gency opening is not available for all types of control failures.
DOL 278 ON/OFF has a built-in 24 V DC motor power supply, battery and charger.
Available in the following variants:
• DOL 278 ON/OFF, Medium (4.2 A)
• DOL 278 ON/OFF, Large (8 A)
• DOL 278 ON/OFF, Xtra Large (10 A)
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.
At high power consumption
When a high power consumption is required, the DOL 278 ON/OFF 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 [}11].

DOL 278A ON/OFF
Technical Manual 5
2 Procedure
This manual describes the mounting, installation and commissioning of a DOL 278 ON/OFF controlled emer-
gency 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 278 ON/OFF.
Installation
1. Battery.
2. Test supply separator.
3. Setting the supply voltage.
4. Connect cables according to the wiring diagram.
Testing
1. DOL 278 ON/OFF.
2. Battery.
Start-up

DOL 278A ON/OFF
6 Technical Manual
3 Product survey
134690 DOL 278AM EmergencyOpen. ON/OFF Medium 4.2A
ON/OFF controlled emergency opening.
Max. power consumption: 4.2 A
Battery: 4 Ah
Medium is including battery and a power supply. Medium supplies max. 4.2
A.
Supports e.g. 4 DA 175-600 and 20 DA 74 winch motors.
134691 DOL 278AL EmergencyOpen ON/OFF Large 8A
ON/OFF controlled emergency opening.
Max. power consumption: 8 A
Battery: 7 Ah
Large is including battery and two power supplies. Large supplies max. 8 A.
Supports e.g. 4 DA 175-600 and 20 DA 74 winch motors.
136700 DOL 278AXL EmergencyOpen ON/OFF XL 10A
ON/OFF controlled emergency opening.
Max. power consumption: 10 A
Battery: 14 Ah ( 2x7 Ah)
Xtra Large is including battery and three power supplies. Xtra Large sup-
plies max. 10 A.
Supports e.g. 4 DA 175-600 and 20 DA 74 winch motors.
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.

DOL 278A ON/OFF
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 278A ON/OFF
8 Technical Manual
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.
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 4 Ah for emergency opening unit Medium.
Battery module 7 Ah for emergency opening unit Large.
Battery modules 2 x 7Ah for emergency opening Xtra 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.

DOL 278A ON/OFF
Technical Manual 9
The emergency opening unit must be supplied from the same phase as the house controller.

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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.
Emergency opening Xtra Large 10 A: Supply voltage must be set on three modules.