Pedestrian Pivot Barrier
MPP-112 / MPP-122 / MPP-132 / MPP-212 / MPP-222
Malfunctions
5817,0016EN / Version 00
71
12.2 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.
–
The blocking
element moves
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 the MMC-
120.
Green LED blinks:
Safety input signal is missing: Check
that there is 24 V 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 the MMC-120 is
showing an error. The red
LED shows the error code.
Count the number of blink impulses and
look up the error code.
See page 78, Table 15.
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.
See page 75, Table 12.
Specialist /
Electrical
specialist
The blocking
element does
not move.
Emergency input IN1 or
IN4 of the MBC-110 has
possibly been interrupted.
Red LED must be
illuminated.
If the red LED is not illuminated, check
the emergency input.
Specialist
Barrier End
Display does
not work.
Incorrect connection of the
Barrier End Display.
Check wiring and connection of the
Barrier End Display.
Electrical
specialist
Table 11: Malfunction table – pedestrian barrier
