Specifications

8. TROUBLESHOOTING
8– 10
CN1B-
19 pin
CN1A-
18 pin
CN1A-
19 pin
Name Definition Action
Cause
Alarm Code
A. 35 1 0 1 Command
pulse alarm
Input command
pulses are too
high.
1. Command pulse frequency is
too high.
Reduce the command
pulse frequency to
proper value.
2. Noise entered command pulses. Take measures
against noise.
3. Command unit faulty. Change the
command unit.
A. 37 0 0 0 Parameter
error
Parameter
setting is wrong.
1. Servo amplifier fault caused the
parameter setting to be
rewritten.
Change the
servo amplifier.
2. Regenerative brake option not
used with servo amplifier was
selected in parameter No. 0.
Set parameter
No. 0 correctly.
A. 46 0 1 1 Servo motor
overheat
Servo motor
temperature rise
actuated the
thermal
protector.
1. Ambient temperature of servo
motor is over 40°C.
Review environment
so that ambient
temperature is
0 to 40°C.
2. Servo motor is overloaded. 1. Reduce load.
2. Review operation
pattern.
3. Use servo motor
that provides
larger output.
3. Thermal protector in encoder is
faulty.
Change servo
motor.
A. 50
0
1 1 Overload 1 Load exceeded
overload
protection
characteristic of
servo amplifier.
Load ratio 300%:
2.5s or more
Load ratio 200%:
100s or more
1. Servo amplifier is used in
excess of its continuous output
current.
1. Reduce load.
2. Review operation
pattern.
3. Use servo motor
that provides
larger output.
2. Servo system is instable and
hunting.
1. Repeat
acceleration/
deceleration to
execute auto
tuning.
2. Change auto
tuning response
level setting.
3. Set auto tuning to
OFF and make
gain adjustment
manually.
3. Machine struck something. 1. Review
operation
pattern.
2. Install limit
switches.
Display