Alarm
Alarm name
Detecting method
Cause and counter measures
AL14
Brake error(BERR)
1
．
When the dynamic brake is used, brake
output turning ON did not generate the
brake confirmation signal input.3
2
．
When the holding brake is used, brake
output turning ON kept the brake
confirmation signal ON.
Read the descriptions on the dynamic and holding brake
connections and check the wiring and used accessories.
AL15
Over-current detection
(OCS)
The motor current exceeded 120% of the
current limit setting.
1
．
The motor in rotation was locked mechanically.
2
．
Short-circuit or grounding of the A, B, and C phases of the
motor.
3
．
Parameter setting error. Please take contact with us.
AL16
Speed amplifier saturation
(VAS)
The speed amplifier was saturated and
current exceeding the maximum level flew
more than 3 seconds.
1
．
The motor is locked mechanically.
2
．
The load inertia is too great to accelerate or decelerate.
3
．
Parameter setting error. Please take contact with us.
AL17
Motor overload (MOL)
Motor temperature calculated from the
actual load level rose exceeding 110% of the
maximum temprature setting.
1
．
Load is too much for the motor output capacity.
2
．
Operation cycles are too short for the motor capacity.
AL18
Instant thermal (POL)
This alarm is issued when output current is
more than 120% of the motor rated current.
1
．
The motor is locked mechanically.
2
．
Load is too much for the motor output capacity.
3
．
Parameter setting error. Please take contact with us.
AL19
Resolver error (RESERR)
The resolver feedback counter made errone-
ous counting.
1
．
Bad contact of the resolver cabling.
2
．
The resolver cable is installed near the power line and
affected by noises. Check the resolver cable.
3
．
The ground line between the motor and the amplifier is
broken or disconnected.
AL20
Overspeed (OSPD)
The rotation rate exceeded 120% of the
maximum rotation setting.
1
．
The servo adjustment value is overshooting. Couduct auto
tuning.
2
．
A command value was too much.
3
．
Bad contact of the resolver cabling.
4
．
The resolver cable is installed near the power line and
affected by noises.
5
．
The ground line between the motor and the amplifier is
broken or disconnected.
AL21
Deviation counter over
(FULL)
Accumulated pulses in the deviation counter
exceeded the following detection level.
1
．
Load is too much for the motor output capacity.
2
．
The load inertia is too great to accelerate or decelerate.
3
．
The value for TP2 (Target loop gain) is set too high.
4
．
Current limit is set too low.
Example: Max.rpm 2000 rpm, Motor sensor: resolver
Target loop gain TP2
=
60
AL22
Resolver ABS phase error
(ABSE)
The ABS sensor had phase shift.
Adjust ABS sensor phases or replace the sensor.
Please contact the manufacturer.
AL23
Resolver ABS broken
line (ACN)
The ABS cable was disconnected or the
+
10
CTD signal line was disconnected.
Even when the power is turned OFF, disconnecting the ABS
cable will trigger the alarm. Absolute position must be set
again after the ABS cable was disconnected and reconnected
for moving the machine or another purpose.
E5. Electronic Terry Motion
104
