THK TSC Series - Causes and Counter Measures of Alarms

6. Troubleshooting
3.
Causes and counter measures of alarms
6-6
TSC
• After removing the alarm cause and then implementing the counter measure, turning the REST
input (pin.17) ON allows the alarm to be reset. If the alarm cannot be reset, the alarm cause is not
removed.
No. Alarm name Generation status Causes Counter measures
51 EEPROM error
When 24 V power is
activated
Driver controller board
has a fault
Replace the driver controller
with new one
52 Detection error
When the servo is
turned ON
Encoder has a fault
Replace the actuator with new one
Actuator connection cable
has a fault
Replace the cable with new one
Driver controller board
has a fault
Replace the driver controller
with new one
The unit hits an obstacle. Remove the obstacle
53 Encoder error At 24 V power ON Actuator connection cable fault Replace the cable with new one
54 Servo error
When in positioning
operation
Inhibition of operation by
external force
Remove the inhibitor
Actuator has a fault
Replace the actuator with new one
Motor has a fault Replace the actuator with new one
Brake has a fault
(when a brake is provided)
Replace the actuator with new
one
Actuator connection cable
has a fault
Replace the cable with new one
Driver controller board has a
fault
Replace the driver controller
with new one
55 Overheat While energizing
Ambient temperature is high
Set the ambient temperature
within the product specification
range
Bad ventilation is likely to
cause the heat to be stayed
inside the unit
Set the surrounding space ac-
cording to the product specifi-
cations
Driver controller board
has a fault
Replace the driver controller
with new one
63 EMG stop While energizing
External emergency stop
switch has operated
Restore the external emergency
stop to the normal status
Voltage reduction in
motor power supply
Set the input voltage within the
product specification range
Driver controller board
has a fault
Replace the driver controller
with new one