Chapter 7 Maintenance and Troubleshooting
- 94 -
Fault
Code
Description Cause Troubleshooting Remarks
Er26
Parameter
setting
incorrect
1. F5-01 (Door open time
limit) is smaller than the
total door open time.
2. F5-02 (Door close time
limit) is smaller than the
total door close time.
3. During door width auto-
tuning, F0-02 (Command
source selection) is not set
to 2 (Door machine manual
control), or F0-01 (Door
open/close control mode)
is not set to 1 (Distance
control).
4. F0-00 (Control mode) is
set to 0 (SVC).
2. F0-00 is set to 0 (SVC)
when the controller drives
a PMSM.
1. Set F5-01 to larger than
the total door open time.
2. Set F5-02 to larger than
the total door close time.
3. Set F0-02 to 2 or F0-
01 to 1 during door width
auto-tuning.
4. When F1-00 (Motor
type selection) is set
to 1 (PMSM), set F0-
00 (Control mode) to 1
(CLVC).
It is only a
prompt, and not
recorded as a
fault.
Er27
Door width
auto-tuning
fault
1. The door width obtained
through door width auto-
tuning is smaller than 20
pulses.
2. Distance control running
is performed before door
width auto-tuning.
1. Check wiring of the
encoder and related
parameters.
2. Check the mechanical
system of the door
machine.
3. Perform door width
auto-tuning before starting
distance control running.
Er28
Door open
timeout
1. The door open limit
signal is abnormal or
incorrectly set.
3. The wire to the pulse
encoder is broken.
1. Check the door open
limit signal.
2. Check wiring of the
encoder.
The controller
can reset
automatically.
Er30
Low speed
door open/
close timeout
1. The door open/close
limit signal is abnormal or
incorrectly set.
2. The wire of the pulse
encoder is broken.
1. Check the door close
limit signal.
2. Check wiring of the
encoder.
The controller
can reset
automatically.
Er31
Door open
hindered
protection
1. The guide rail of the
elevator door is blocked by
stuff.
2. The door open hindering
parameters are incorrectly
set.
1. Clear the stuff in the
guide rail.
2. Set the upper limit of
door open torque to a
proper value.
3. Set F3-11 (Door open
hindered judging time) to a
proper value.
The controller
can reset
automatically.
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