Duty Cycle Monitoring; Trouble-Shooting; Possible Faults And Remedies - gumpo Contec plus Bedienungsanleitung

3.6.4 Duty cycle monitoring

1.3 Important notes for service
The duty cycle monitoring ensures that when a defined duty cycle has been reached, the control unit is taken out of
operation for a defined time (e.g. after 2 minutes of continuous operation, the control unit is automatically disabled for
Danger: In the event of a fault, please contact your customer service immediately. Only original spare
the next 18 minutes – the initiated lifting movement, however, can always be completed).
parts may be used for repairs. Parts may only be replaced by qualified service technicians; otherwise
the warranty/guarantee shall be null and void.
4. Technical data of the control unit
Danger: Never open the housing of the control unit or the hand switch.
Supply voltage
Unauthorised opening and improper repairs could result in dangers for the user, and the entitlement to
Standby power, (typically)
guarantee claims shall be null and void.
Operating voltage, internal and external
Only the qualified technicians of the manufacturer are authorised to open or repair the electrical
electronics and Hall sensors
equipment.
Accuracy of the motor current measurement
at 100% output voltage and 4-8 A per motor
2. Functions and features
Ambient temperature
Relative humidity (for operation)
The desk system Contec-plus is exclusively intended for indoor use as office furniture in the commercial sector.
Storage and transport temperature
Relative humidity (for storage)
The hand switch of the desk serves as the control of the electrically powered, height-adjustable desk system.
IP-class
The basic function is to raise and lower the desktop.
Protection class
Dimensions of the control unit (L-W-H) [mm]
Advanced functions are to store height positions, and to move to these positions (memory control).
Tolerances
Control
During commissioning, an initialization (manual reset) must be carried out (see section 3.3).
This will normally be carried out by the qualified technician of the specialized dealer/manufacturer during assembly
Max. current per motor channel
and commissioning at the installation site.
In the event of a power outage while the drives are operating, another reset must be carried out, before the desk can
be used normally again.
The reset movement will be performed at a reduced speed.

5. Trouble-Shooting

The movements of the drives are electronically monitored by the control unit. On exceeding the maximum duty cycle,

5.1 Possible faults and remedies

the electronics will prevent any further travel of the drives in order to protect the electrical and mechanical components
against overload.
Drives do not function
In the event of unacceptably high temperatures, a shutdown will occur.
Possible cause
In this case, the LED display on the hand switch will blink, when pressing the keys.
Mains cable is not plugged in
The maximum duty cycle is 2 minutes, after which the control unit is automatically disabled for the next 18 minutes.
The drives are not plugged in
If the control system detects excessive weight loads it will also be automatically disabled.
Poor plug contact
Control unit is defective
The maximum distributed load of the desk is 70 kg.
Hand switch is defective
Drives only run in one direction
The maximum noise emission during movement of the desk is 50dB(A).
Possible cause
Power outage during drive movement, or the After starting and before stopping, the drives will temporarily run at a reduced speed (soft start/soft stop).
control unit was disconnected during drive
A certain zone (ca. 40 mm before the lower end position), is defined as a safety area. If the drives reach this point, a
movement
safety stop will be triggered. After pressing the key again, movement will be resumed at a reduced speed.
Control unit is defective
Hand switch is defective
If a desk meets an obstruction when moving downwards, the internal collision protection system will prevent a tilting
Drive is defective
position and stops the desk from toppling over. If an obstruction is detected, a safety function is triggered and the
Control unit or hand switch do not function
desktop automatically moves a defined distance in the opposite direction.
Possible cause
Mains cable is not plugged in
Control unit is defective
Hand switch is defective
Hand switch is not plugged in
Mains cable is defective
Danger:
Poor plug contact In spite of the collision protection system in place, there may still be a risk of pinching in exceptional cases.
For physical reasons „soft" obstructions are difficult or impossible to detect and evaluate. In the event of a
collision with an obstruction, damage occurring to the obstruction cannot be ruled out.
32
207 - 254,4 V / 50 Hz
<= 0,3 W
5 VDC ±15% 300 mA
±15%
0 - 30° C
5 - 85% (non-condensing)
-40 - +85° C
5-90% (non-condensing)
IP 20
I
319x119x37 mm
In accordance with DIN ISO 2768-1 c
Normal-cycle 2/18:
2 min movement: 7 A@33 V 231 W
8 A per motor channel
Maximum total current limited
Remedy
Connect the mains cable of the control unit
Connect the motor cable with the control unit
Connect the motor cable, mains cable and the hand switch properly
Contact customer service
Replace the hand switch
Remedy
Manual reset (see section 3.3)
(If the drives only move downwards)
Contact customer service
Replace the hand switch
Contact customer service
Solution
Plug in the mains cable into the control unit
Contact customer service
Replace the hand switch
Plug in the hand switch
Contact customer service
Connect the plug properly
Pause: 18 min