21
www
.wittur
.com
Changes can be made without notice
PM.2.004923.EN - 811-000-000 SDS
©
DC-PWM Compatible · Edition 22 July 2020
Drive - Instruction Manual
6.11 ALARMS
The Sematic Drive System
©
controller has the ability to diagnose and record a number of defects; such diagnostics is very helpful to the
maintenance personnel in order to locate possible operational problems.
When any monitored error occurs, the Door Controller display will signal it and the error code will show.
The following table illustrates the type of signalling and the relevant alarm detected by the Door Controller:
ALARMS TABLE
Code on display
Viewed error
Error description
Action undertaken by Door
controller
01
No MLC Signal
(No MAIN LIFT CONTROLLER
signal)
No MLC Signal
Main lift controller is disconnected
or has failed (Note 1)
Auto reset when proper condition is
restored.
02
Over current protection
Motor over current due to door
mechanical strain (Note 2)
Auto reset after a time depending
on motor
03
Reversing system fault
The main lift controller does not
send the reopening command after
the Door Controller has signalled an
obstacle (Note 3)
Door drive keeps on closing at low
speed.
06
Motor thermal protection
Motor over-heating (with motors
where internal PTC sensor is
present)
Auto reset when normal operating
conditions are restored.
07
Motor jerk
Interruption of the motor cables
(Note 4)
Auto reset after 5 seconds; after 5
occurrences within 5 minutes the
system stops
08
Over-voltage
Over-voltage in the power supply
Door controller switches to low
speed, signals the error, and
performs an auto-reset; after 5
occurrences within 5 minutes the
system stops
09
PWM-Trip
Impulse over-current
Auto reset when proper condition is
restored; after 5 occurrences within
5 minutes the system stops.
10
Internal
Generic alarm due to an internal
malfunction of the Door Controller
Auto reset when proper condition is
restored.
11
Power supply protection
Internal switching power supply
over current, due to mechanical
strain
Auto reset when proper condition is
restored; after 5 occurrences within
5 minutes the system stops.
Notes:
1.
This alarm can only occur if the MAIN LIFT CONTROLLER TEST has been set either to “WHEN Moving” or “Parking” and
the “MAIN LIFT CONTROLLER INPUT ALARM” parameter has been set to “ON” (see
“6.4 Main Lift Controller Test” a pag. 19
2.
This alarm indicates an excessive strain in the operator’s functioning; it is advisable to check that the system has no friction
whatsoever, especially during the opening phase.
3.
This alarm can only occur if the REVERSING SYSTEM parameter has been set to “EXTERNAL” (see
INTERNAL or EXTERNAL” a pag. 19
4.
If motor connections are inverted, the door opens when a closing signal is received and closes with an opening signal. The Door
Operator is pre-wired and tested by the manufacturer; so special attention must be taken when replacing motor and/or cables.
