Motor control unit DCM31
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b) Check connection of the closing edge safety device,
especially the earth connection at terminal [Kl.23].
c) If a) and b) correct, there is possibly a hardware error
in the control unit. The control unit must be replaced.
13 Hardware LS Switch off power, wait 10 sec, switch power back on.
If the error message is still active:
a) check setting [M.b4] and [M.C4] (external LS test)
with respect to connected photoelectric barrier.
b) Check connection of the photoelectric barrier,
especially earth connection at terminal [Kl.23].
c) if a) and b) correct, there is possibly a hardware error
in the control unit. The control unit must be replaced.
{Er.20} to {Er.29} are fault messages and show the cause of the last motor stop.
Fault No. Fault message Action
20 No current in the startup motor 1 Give renewed start command.
If gate travel interrupted again with error
message this means that no motor current
was measured.
a) Current of motor 1 is too low (<1A) =>
Motor and control unit do not match
b) no motor connected to [Kl.5]+[Kl.6].
c) Motor defective or cable break.
21 No current in startup motor 2 Give renewed start command.
If gate travel interrupted again with error
message this means that no motor current
was measured.
a) Current of motor 2 is too low (<1A) =>
Motor and control unit do not match
b) no motor connected to [Kl.5]+[Kl.6].
c) Motor defective or cable break.
22 Motor stop by LS Gate travel was stopped by actuation of the
LS input.
Check whether obstruction in the way.
If no, check photoelectric barrier and setting
of [M.b4]
23 Motor stop by SE Gate travel was stopped by actuating the SE
inputs.
Check whether obstruction in the way.
If no, check safety strip and setting of [M.b6]
24 Motor stop due to exceeding of running
time
Motor operation was longer than set in
[M.C5].
Check motor, transmission, emergency
release. If necessary adjust [M.C5] to gate
running time.
25 Emergency stop actuated Gate travel was interrupted by actuation of
the emergency stop input or simultaneous
actuation of input A and input B (or radio
receiver channel 1 + 2).
26 Electricity stop motor 1 The control unit stopped gate travel, as the
forces at motor 1 exceeded the teaching and
permitted values.
a) Check whether obstruction in the way.
b) Check gate leaf for smooth running and
M1.
c) Delete forces and travel path and carry out
new teaching runs.
d) Check force values in [M.A7] and [M.A8]
and increase if necessary.
27 Electricity stop motor 2 The control unit has stopped gate travel, as
the forces at motor 2 exceeded the teachin
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