Okuma Alarm-P 0885 MCS Speed deviation over
Actual motor speed excessively deviates from the speed command.
Object
Axis name or none (spindle)
Character-string
None
Code
XXXXYYYY
XXXX: Detected torque (sum of the torque data collected for 3.2 ms)
+-2^-12[MAXTRQ]
If Tv = 0.4 ms, the momentary maximum torque is H’7FFF.
If Tv = 0.8 ms, the momentary maximum torque is H’3FFF.
If Tv = 0.4 ms, the momentary maximum torque is H’7FFF.
If Tv = 0.8 ms, the momentary maximum torque is H’3FFF.
YYYY: Detected acceleration (average value measured for 3.2 ms)
+-2^-16[vr/3.2 ms/3.2 ms]
= about 0.1 [rpm/ms]
= about 0.1 [rpm/ms]
The code number 00000001 means that the error data is replaced by zero because of exponent underflow.
Probable Faulty Locations
– The motor does not turn because of (mechanical lock or) application of large load.