DoorHan DCUT-1 User manual

© DoorHan, 12.2019
Owner’s Manual
DCUT-1 Control Unit
for Electro-Hydraulic
Dock Leveler with
Telescopic Lip
General Information 2
Safety Rules 2
Design 3
Installation 3
Electrical Connections 4
Control Unit Operation 5
Troubleshooting 6
Appendix 7

2
DCUT-1 control unit operates electro-hydraulic dock leveler
with telescopic lip of DS/DSI/DSIM series.
The unit is equipped with an uncontrolled movement pro-
tection system, which is activated if the dock leveler was
halted in the event of a potential emergency or if power
supply failed.
This control unit does not require programming. After all
the necessary connections, it is ready for operation.
The control unit works with DC coils only.
1. GENERAL INFORMATION
Options DCUT-1
Automatic return to stored position by pressing the P button
Supply voltage, 380-415 V / 50-60 Hz 
External traffic light
Internal traffic light
Dock leveler lighting
Leveler locking when door is closed (interlock) 
Door locking when leveler is open (interlock) 
Connection of additional safety devices 
Service indicator
Menu screen (LCD display)
Door control
Inflatable dock shelter control
Table 1.1. Control units options
Table 1.2. Control unit specifications
Parameters Value
Supply voltage 380-415 V / 50-60 Hz
Control voltage 24 VDC
Max. power of the hydraulic station 1,5 kW
Operating temperature -20…+50 °С
Dimensions (W × H × D) 195 × 355 × 165 mm
Protection class IP54
Use the control unit only for its intended purpose, any
other use is prohibited.
The manufacturer assumes no liability for damage or
injury to persons or property which occur as a result of
failure to observe safety rules specified herein or incor-
rect use of the control panel.
Only trained personnel should install, operate or service
this equipment.
Correct operation of the control unit can only be guar-
anteed if the supply voltage complies with the specified
in the instructions.
Prior to first actuation of the control unit, make sure
that all electrical connections are securely fastened and
insulated, safety devices are installed and ready for use.
2. SAFETY RULES
WARNING!
Carefully follow all the instructions specified herein. Failure to do so could cause equipment damage and/or personal
injury!
GENERAL INFORMATION

3
DESIGN
3. DESIGN
1. Power indicator
2. LIP OUT button
3. Dock leveler LOWER button
4. Dock leveler RAISE button
5. LIP IN button
6. Main power switch
1. Main board
2. Control board
Fig. 3.1. Closed view
Fig. 4.1. Control unit installation
Fig. 3.2. Open view
1
12
2
3 4
5
6
Mount the control unit so the distance between control unit bottom and dock floor is approximately 1–1,5 m. Choose the
fasteners corresponding to the type of wall.
4. INSTALLATION
Anchor points

4
5. ELECTRICAL CONNECTIONS
WARNING!
Before performing electrical connection of the control unit disconnect all electric power and ensure it won’t be sup-
plied during the work.
L1 L2 L3 N PE PE U V W
OUT
+24
OUT
+24
OUT
+24
M
CONTACTOR
PROTECTOIN
RELAY
TRANSFORMER
HYDRAULIC STATION
MOTOR
ELECTROMAGNETIC
VALVE COILS
L1 L2 L3 N PE
1 2 3
~ 380 – 415 V
~ 380 – 415 V
Fig. 5.1. Electrical connections diagram
ELECTRICAL CONNECTIONS
FU1
FU2
SAFETY DEVICES
CONNECTION
1 – leveler lower/raise coil
2 – lip extension coil
3 – lip retraction coil
FU1 fuse 2 A / 500 V AC
FU2 fuse 3,15 A / 250 V AC

5
When loading or unloading is finished resume the stored
position of the dock leveler immediately. Press and hold
the RAISE button till the platform is well above vehicle
bed. Then press and hold the LIP IN button and wait until
the lip retracts completely. Then press the LOWER button
and wait the platform to resume the stored position. After
that turn the main power switch 0FF.
Should any emergency arise halt the dock leveler in place by turning the main power switch OFF.
6. CONTROL UNIT OPERATION
6.1. TO RAISE THE LEVELER
6.2. TO STORE THE LEVELER
6.3. EMERGENCY STOP
WARNING!
Keep the main power switch ON till the platform stops working and returns to the stored position!
CONTROL UNIT OPERATION
WARNING!
To resume operations turn the main power switch ON and press RAISE button shortly.
* Connection scheme refers to DoorHan operators of Shaft series only.
Fig. 5.2. Connection scheme for lip inductive position sensor*
1. Park the transport vehicle with an open body in front of
the leveler so that it is positioned squarely against dock
bumpers.
2. Chock the vehicle wheels to prevent accidental depar-
ture.
3. Turn the main power switch ON to operate the leveler.
4. Make sure the power led on the control unit is lit, then
press the leveler control button.
5. Keep the button pressed until the leveler platform is
fully raised and the lip is extended. Then release the
button and wait till the leveler platform lowers on the
vehicle bed. The lip should have a minimum of 100 mm
overlap on the vehicle bed surface.
Shaft operator
control post
Lip inductive
position sensor
Shaft operator control board terminals
brown
black
blue
COM OPEN STOP CLOSE
+24V
white
red
yellow

6
TROUBLESHOOTING
7. TROUBLESHOOTING
Symptom Possible cause Solution
Platform won’t rise
(pump does not rotate)
No supply voltage Check the electrical wires
and the voltage in the socket
Faulty power switch Replace main power switch
Blown fuse Replace fuse (FU1, FU2)
Faulty contactor Replace main board
No power to the contactor coil Replace main board
No jumper on terminals
for safety devices Set the jumper
Platform lock switch open Check the switch
Platform does not respond to pressing the
control button Replace control board
Platform won’t rise
(pump rotates) Incorrect phasing Swap any two phases in the control unit
Platform won’t lower
No power to electromagnetic valve coil
Check wiring from control unit to coil 1.
Check coil 1 voltage (24 VDC)
Replace main board
Faulty electromagnetic valve coil or valve
Replace coil or valve (see Owner’s Manual for
Electrohydraulic Dock Leveler with Telescopic
Lip of DS, DSI Series)
Lip won’t extend
No power to electromagnetic valve coil
Check wiring from control unit to coil 2.
Check coil 2 voltage (24 VDC)
Replace main board
Faulty electromagnetic valve coil or valve
Replace coil or valve (see Owner’s Manual for
Electrohydraulic Dock Leveler with Telescopic
Lip of DS, DSI Series)
Lip won’t retract
No power to electromagnetic valve coil
Check wiring from control unit to coil 3.
Check coil 3 voltage (24 VDC)
Replace main board
Faulty electromagnetic valve coil or valve
Replace coil or valve (see Owner’s Manual for
Electrohydraulic Dock Leveler with Telescopic
Lip of DS, DSI Series)
Table 7.1. Possible faults, their causes and solutions

7
* Cables are connected to hydraulic stations and supplied with the dock levelers.
Table 2. Connecting cables to the dock leveler control unit*
# Part name Length Part number
- Connecting cable for DCUT-1, 2, 3 control units 7 m DKTL02-2
- Connecting cable for DCUT-1, 2, 3 control units 10,5 m DKTL02-3
APPENDIX
Table 1. Control unit spare parts
# Part name Part number
1 DCUT-1 main board PCB_DCUТ1-M/V.1.2
2 DCUT-1 control board PCB_DCUT1-BT/V.1.0
3 Switch assembly DCU007
Fig. 1. Control unit design
3
2
1
APPENDIX. RECOMMENDED SPARE PARTS

We very much appreciate that you have chosen
the product manufactured by our company and
believe that you will be satisfied with its quality.
For information on purchasing, distribution and
servicing contact DoorHan central office at:
120 Novaya street, Akulovo village,
Odintsovo district, Moscow region,
143002, Russia
Phone: [phone]
E-mail: [email protected]
www.doorhan.com
NO. 5188, West BaoDai Road Xukou Town,
Suzhou, Jiangsu, China
Phone: [phone]
E-mail: [email protected]
www.doorhan.com