Pedestrian Barrier High Door MPH 112
Malfunctions
80
5817,5005EN / Version 01
13 Malfunctions
This chapter describes possible causes of malfunctions and trouble
shooting tasks.
Contact the manufacturer in case of malfunctions that cannot be
repaired by means of the following information (
Page 2)!
13.1 Malfunction table – Pedestrian barriers
Malfunction
Possible cause
Corrective action
To be carried
out by
Motor is overheated.
–
I²t surveillance has reduced
speed to protect the motor.
As soon as the motor has cooled down,
the speed will return to normal.
–
Glass wings
move too
slowly
A mechanical obstruction
disables the movement.
Remove obstruction.
Operator
Green LED is switched off:
Check that there is +42V between
terminals DC+ and DC–. If not, check
the wiring and power supply.
Electrical
specialist
Cabling inaccurate or
defective. Green LEDs
must be permanently
illuminated at both MMC-
120.
Green LED blinks:
Safety input signal is missing: Check
that there is 24V at input IN1 of
MBC-110 (red LED on IN1 must be
illuminated).
Check that the CAN cables between
the controllers are not damaged.
Check that the CAN addresses on all
controllers are correctly set.
Check that the CAN termination
resistors on all controllers are correctly
set.
Electrical
specialist
Check if one or both
MMC-120’s are showing an
error.
The red LED shows the error code:
Count the number of blink impulses and
look up the error code.
Refer to Table 18.
Specialist /
Electrical
specialist
Check if the MBC-110
display is showing an error.
Read the error code in the display:
Look up the error code.
Refer to Table 15.
Specialist /
Electrical
specialist
Emergency input has
possibly been interrupted.
Red LED at IN1 of the
MBC-110 must be
illuminated.
If the red LED is not illuminated, check
the emergency input.
Specialist
One or both
glass wings do
not move.
Light barrier covered.
Remove obstruction.
Operator
