Skov DOL 31 Speed Controller Technical User Guide

Brand: Skov

Model: DOL 31 Speed Controller

Type: Technical User Guide

Skov DOL 31 Speed Controller

The Skov DOL 31 Speed Controller is a versatile device that can be used in a variety of applications to control the speed of AC motors. It is a compact and easy-to-use device that can be mounted on a DIN rail or in a control panel.

The DOL 31 has three operating modes:

Automatic - Master mode: In this mode, the DOL 31 uses a built-in temperature sensor to automatically adjust the speed of the motor to maintain a desired temperature.
Automatic - Slave mode: In this mode, the DOL 31 is controlled by a master controller, which sends a signal to the DOL 31 to adjust the speed of the motor.

Skov DOL 31 Speed Controller

The DOL 31 has three operating modes:

Automatic - Master mode: In this mode, the DOL 31 uses a built-in temperature sensor to automatically adjust the speed of the motor to maintain a desired temperature.
Automatic - Slave mode: In this mode, the DOL 31 is controlled by a master controller, which sends a signal to the DOL 31 to adjust the speed of the motor.

DOL 31 Speed Controller

Technical User Guide

612061 • 2023-08-31

DOL 31 Speed Controller

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.

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 31 Speed Controller

Technical User Guide

1 Product description ....................................................................................................................................... 6

1.1 DOL 31 Automatic – Master mode............................................................................................ 6

1.2 DOL 31 Automatic – Slave mode.............................................................................................. 7

1.3 DOL 31 manual control.............................................................................................................. 7

2 Product survey ............................................................................................................................................... 8

3 Mounting guide............................................................................................................................................... 9

3.1 Recommended tools.................................................................................................................. 9

3.2 Mounting of DOL 31 speed controller.................................................................................... 10

4 Installation guide.......................................................................................................................................... 11

4.1 Cabling...................................................................................................................................... 11

4.2 Dismantling the AUT-0-MAN switch in DOL 31 16 A ............................................................ 11

4.3 Connection in DOL 31 ............................................................................................................. 12

4.4 Cable plans and circuit diagrams........................................................................................... 13

4.4.1 General information about circuit diagrams ............................................................................... 13

4.4.2 Color code.................................................................................................................................. 13

4.4.3 Power supply isolator................................................................................................................. 13

4.4.4 Letter code ................................................................................................................................. 13

4.4.5 Cable plan controller DOL 31..................................................................................................... 14

4.4.6 Circuit diagram controller to DOL 31.......................................................................................... 14

4.4.7 Cable plan DOL 31 Master and Slave ....................................................................................... 15

4.4.8 Circuit diagram DOL 31 Master and Slave ................................................................................ 15

5 User guide..................................................................................................................................................... 16

5.1 Operation .................................................................................................................................. 16

5.2 Alarm lamp ............................................................................................................................... 16

5.3 Display ...................................................................................................................................... 16

5.4 AUT-0-MAN switch................................................................................................................... 16

5.5 Keyboard .................................................................................................................................. 17

5.6 Menu Survey............................................................................................................................. 17

6 Menu mode ................................................................................................................................................... 18

6.1 Automatic - Master mode ........................................................................................................ 18

6.1.1 Set temperature ......................................................................................................................... 18

6.2 Automatic Slave mode ............................................................................................................ 18

6.3 Manual mode ............................................................................................................................ 19

6.3.1 Set output................................................................................................................................... 19

6.4 Minimum regulation of AC output .......................................................................................... 19

6.5 Minimum regulation of AC output .......................................................................................... 20

7 Service menu ................................................................................................................................................ 21

7.1 Active Alarms ........................................................................................................................... 21

7.2 Set temperature alarm ............................................................................................................. 21

7.3 Set control temperature .......................................................................................................... 22

7.4 Set P band ................................................................................................................................ 22

7.5 Set mininmum analog DC output ........................................................................................... 23

7.6 Set maximum analog DC output............................................................................................. 23

7.7 Selecting temperature scale ................................................................................................... 23

7.8 Invert ......................................................................................................................................... 23

7.9 Turn off functions .................................................................................................................... 24

DOL 31 Speed Controller

7.9.1 Turn off....................................................................................................................................... 24

7.9.2 Set turn off limit .......................................................................................................................... 25

7.10 Contrast .................................................................................................................................... 25

7.11 Backlight................................................................................................................................... 25

7.12 Language .................................................................................................................................. 25

7.13 Version Information ................................................................................................................. 25

8 Settings ......................................................................................................................................................... 26

8.1 Factory settings ....................................................................................................................... 26

8.2 Functions in menu mode ........................................................................................................ 26

8.3 Table relating to DOL 12 temperature sensor control.......................................................... 27

9 Replacing Triac............................................................................................................................................. 28

10 Maintenance.................................................................................................................................................. 29

10.1 Cleaning.................................................................................................................................... 29

10.2 Recycling/Disposal .................................................................................................................. 29

11 Trouble shooting instructions .................................................................................................................... 30

12 Technical data .............................................................................................................................................. 31

Technical User Guide

DOL 31 Speed Controller

6 Technical User Guide

1 Product description

DOL 31 is a single-phase triac speed controller for e.g. regulation of fans, stand-alone heating units or light.

DOL 31 can with advantage be used in applications where a complete climate controller is not required.

DOL 31 can be set to three different modes of operation:

• Automatic - Master mode in which the DOL 31 output is controlled on the basis of the ambient temperature.

Each DOL 31 is supplied with one DOL 12 temperature sensor.

• Automatic - Slave mode in which the DOL 31 output is controlled by a 0-10 V input signal.

• Manual control in which the DOL 31 output is set manually by means of the keyboard on the front.

In addition, DOL 31 has an alarm relay (max. 24 V, 1A), and 1 control relay (max. 230 V, 12 A). The control re-

lay could for instance be used for turning a heat or cooling source on and off.

DOL 31 speed controller is available in a 6.8 A and a 16 A version.

1.1 DOL 31 Automatic – Master mode

Temperature-controlled by means of a DOL 12 temperature sensor.

Fan

DOL 12

Heating

DOL 12

Fan/Heating

DOL 12

Regulation of fans Regulation of heating Control of one or more DOL 31, ex-

tended capacity.

Fan

DOL 12

Regulation of fan

0-10 V or 10-0 V

DOL 31 Speed Controller

Technical User Guide 7

1.2 DOL 31 Automatic – Slave mode

Controlled by a 0-10 V input signal.

Controlled by a SKOV A/S controller Controlled by DOL 31

1.3 DOL 31 manual control

Fan

Light

Fan

Controlled manually with setting via the keyboard. Output can be

set to 0 to 100 %.

DOL 31 Speed Controller

8 Technical User Guide

2 Product survey

130171 DOL 31 speed controller 6.8 A

0-10 V input or DOL 12 input (1)

0-10 V output (1)

60-230 V output (1)

24 V output (1)

24 V alarm relay (1)

230 V control relay (1)

Supplied with:

1 DOL 12 temperature sensor, 3 plastic glands M25 and 3 plastic nuts M25.

130172 DOL 31 speed controller 16 A

0-10 V input or DOL 12 input (1)

0-10 V output (1)

60-230 V output (1)

24 V output (1)

24 V alarm relay (1)

230 V control relay (1)

Supplied with:

1 DOL 12 temperature sensor, 3 plastic glands M25 and 3 plastic nuts M25.

DOL 31 Speed Controller

Technical User Guide 9

3 Mounting guide

3.1 Recommended tools

Below follows a list of tools recommended for installation of the DOL 31.

Topic Description

Cordless drill

Drill kit

Hammer

Marker pen

Multimeter

Tape measure

Side cutter

Screwdriver

Spirit level

DOL 31 Speed Controller

10 Technical User Guide

3.2 Mounting of DOL 31 speed controller

1. Remove the front panel and the flat cable plug (A).

2. Knock out the required number of knock-out pieces (B) at the bottom of the cabinet and mount the plastic

glands.

3. Prick/drill holes for the 4 screws (C) in the bottom section of the cabinet.

4. Remember free space around the cabinet:

• 10 cm (D) on the right side for operation of the AUT–0–MAN (Auto/Manual) change-over switches.

• 27 cm (E) above the cabinet so that the front panel can be placed here during service.

• 10 cm (F) below the cabinet to enable air cooling.

5. Align the box horizontally. Hold the cabinet base against the wall and mark out the 4 screws.

6. Drill 4 8 mm holes.

7. Mount the cabinet using the enclosed wall dowels and screws.

8. Place one or more washer(s) under one of the cabinet feet if the wall is not level and the cabinet base

moves.

DOL 31 Speed Controller

Technical User Guide 11

4 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.

4.1 Cabling

Cables are led through plastic glands in the bottom section. It is recommended to use armored cable in loca-

tions where there is a risk of rodent attacks.

4.2 Dismantling the AUT-0-MAN switch in DOL 31 16 A

Disconnect the supply voltage.

Dismantle the AUT-0-MAN switch in order to gain access to the screw

terminals.

Turn the lock in the opposite direction of the arrow.

Set the switch to 0.

Dismantle the AUT-0-MAN switch by means of a screwdriver. Push the

switch housing to the left.

Lift out the switch.

Connect power supply in X13-X15.

Connect output in X16-X18.

Set the switch to 0.

Push the AUT-0-MAN switch to the right.

Turn the lock. The arrow indicates the direction.

DOL 31 Speed Controller

12 Technical User Guide

4.3 Connection in DOL 31

Terminal block

X1 0-10 V input signal from DOL 12; controller or another DOL 31.

X2 0 V

X3 0-10 V or 10-0 V output signal

X4 0 V

X5 +24 V DC output

X6 0 V

X7 Alarm relay NO

X8 Alarm relay COMMON

X9 Alarm relay NC

X10 Control relay NO

X11 Control relay COMMON

X12 Control relay NC

X13 Supply ground

X14 Supply, phase

X15 Supply, neutral

X16 Output, neutral

X17 Output, variable phase

X18 Output ground

X19 Ground to cooling plate

DOL 31 Speed Controller

Technical User Guide 13

4.4 Cable plans and circuit diagrams

4.4.1 General information about circuit diagrams

Symbols are in accordance with the IEC/EN 60617 standard.

The classification of the symbols ("letter codes") on the symbols is in accordance with the IEC/EN 81346-2 stan-

dard.

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.

4.4.2 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

4.4.3 Power supply isolator

Power supply isolator

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

motor control.

4.4.4 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

DOL 31 Speed Controller

14 Technical User Guide

4.4.5 Cable plan controller DOL 31

4.4.6 Circuit diagram controller to DOL 31

31 6.8 A = 10 A fuse

31 16 A = 16 A fuse

DOL

DOL31

DOL 31 Speed Controller

Technical User Guide 15

4.4.7 Cable plan DOL 31 Master and Slave

4.4.8 Circuit diagram DOL 31 Master and Slave

DOL

31 16 A = 16 A fuse

DOL

DOL31 6.8 A = 10 A fuse

DOL31

From X3 on Master

From X4 on Master

To X1 on Slave

To X2 on Slave

DOL 31 Speed Controller

16 Technical User Guide

5 User guide

5.1 Operation

Alarm lamp

Keyboard

AUT-0-MAN switch

Display

5.2 Alarm lamp

The alarm lamp is on when:

DOL 12 temperature sensor is disconnected Low temperature alarm

Short-circuited DOL 12 temperature sensor High temperature alarm

5.3 Display

Automatic

Manual

5.4 AUT-0-MAN switch

AUT (I) Auto (DOL 31 runs in the current user mode).

0Service mode (outputs are dead).

MAN (II) 100 % (phase directly to output).

DOL 31 Speed Controller

Technical User Guide 17

5.5 Keyboard

Up, down, right, left keys

The arrow keys are used for navigation and changing of data and values.

< 0.5 sec. By pressing you change the value by one either a menu or data.

> 0.5 sec. Pressing quickly changes the value/the menu.

Return key

Return is used for:

Returning to previous level or function.

Data remains unchanged.

OK key

OK is used for:

Selecting function.

Confirming and saving data.

5.6 Menu Survey

24 C° 0% 100% Automatic / manual Service

Alarms 3 C° -8 C° 4 C° 5.7 V 10 V VER.

Language

60 %60 %

YES/NO

NO/YESC / F

Set temperature/output Set maximum analog output

Set minimum output Set temperature scale

Set maximum output Invert

Set mode Deactivating Functions

Service menu Contrast

Active Alarms Backlight

Set temperature alarm

Temperature alarm high

Language

Set P band Version Information

Set minimum analog output

DOL 31 Speed Controller

18 Technical User Guide

6 Menu mode

Set DOL 31 to the required mode. (Automatic Master/Slave and Manual).

6.1 Automatic - Master mode

It is controlled by a signal from the temperature sensor. DOL 31 automatically adjusts according to the set tem-

perature.

Set mode Automatic Master

6.1.1 Set temperature

Set required temperature. DOL 31 automatically adjusts according to the set temperature.

Set temperature 26 °C

6.2 Automatic Slave mode

DOL 31 is controlled by the controller or a master DOL 31. No setting of temperature.

Set mode Automatic Slave

DOL 31 Speed Controller

Technical User Guide 19

6.3 Manual mode

Manual control of output.

Set mode Manual

6.3.1 Set output

DOL 31 is manually controlled. Direct control of the output by pressing the up or down key. Output can be set to

0 to 100 %. Min. and max. output are left out of account.

NOTE: Please note that certain fans require a minimum voltage.

Set output 26 %

6.4 Minimum regulation of AC output

Setting minimum power on output. The setting is made as a percentage of the supply voltage. Control of the

output by pressing the up or down key. Min. setting (0-50 %) cannot exceed 50 %.

For use with e.g. heating control:

Set minimum output to 0%. DOL 31 will then turn off the output, if there is no need for adjustment.

For Automatic Slave mode, see section Set turn off limit [}25].

NOTE: Please note that certain fans require a minimum voltage.

Set minimum output 26 %

DOL 31 Speed Controller

20 Technical User Guide

6.5 Minimum regulation of AC output

Setting maximum power on output. The setting is made as a percentage of the supply voltage. Control of the

output by pressing the up or down key. Min. setting (50 - 100 %) cannot be set higher than 50 %.

Set maximum output 26 %

Example:

Set minimum output = 0 %

Triac output = 0 V

Set minimum output = 1 %

Triac output = 60 V

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Skov DOL 31 Speed Controller Technical User Guide

Brand: Skov

Model: DOL 31 Speed Controller

Type: Technical User Guide

Skov DOL 31 Speed Controller

The DOL 31 has three operating modes:

Automatic - Master mode: In this mode, the DOL 31 uses a built-in temperature sensor to automatically adjust the speed of the motor to maintain a desired temperature.
Automatic - Slave mode: In this mode, the DOL 31 is controlled by a master controller, which sends a signal to the DOL 31 to adjust the speed of the motor.

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Skov DOL 31 Speed Controller Technical User Guide

Skov DOL 31 Speed Controller Technical User Guide

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