Okuma Alarms Errors

Okuma Alarm-P 0853 MCS CON APA deviation Difference between CON and APA values has exceeded the allowable limit. The CON-APC deviation is the absolute value of difference between [calculated value…

Okuma Alarm-P 0854 MCS Power supply unit error The power unit caused an error. Object Axis name or none (spindle) Character-string None Code AAAAAAXX AAAAAA is always 0. X Alarm…

Okuma Alarm-P 0855 MCS Converter link error The convertor link (used for communication between power unit and inverter unit) caused an error, disabling the NC from monitoring the power unit…

Okuma Alarm-P 0856 MCS DC-bus voltage alarm The DC-bus voltage in the inverter unit has abnormally risen or fallen, disabling the inverter from supplying the current. Object Axis name or…

Okuma Alarm-P 0857 MCS Motor overcurrent The inverter unit has detected excessive current flowing in the motor cable. Object Axis name or none (spindle) Character-string None Code XXXXYYYY XXXX= U-phase…

Okuma Alarm-P 0858 MCS Power unit overheat The inverter unit has detected excessive current flowing in the motor cable. The inverter unit temperature has risen abnormally. Object Axis name or…

Okuma Alarm-P 0862 MCS Winding change failure The winding-change magnet switch does not come on. Object Axis name or none (spindle) Character-string None Code YYYYZZZZ If YYYY = 0000 ZZZZ…

Okuma Alarm-P 0865 MCS Encoder initialization failure An error occurred in initialization of the motor encoder. Object Axis name or none (spindle) Character-string None Code XXYYZZZZ XX= Encoder link sequence…

Okuma Alarm-P 0866 MCS Encoder with shaft detected error The encoder with shaft has become unable to detect positional data. Object Axis name or none (spindle) Character-string None Code Same…

Okuma Alarm-P 0867 MCS Encoder with shaft initialization failure An error occurred in initialization of the encoder with shaft. Object Axis name or none (spindle) Character-string None Code Same with…

Okuma Alarm-P 0864 MCS Encoder detected error The motor encoder has become unable to detect positional data. Object Axis name or none (spindle) Character-string None Code XXYYZZZZ XX= Encoder error…

Okuma Alarm-P 0871 MCS Resolver alarm The resolver does not send any signal. Object Axis name or none (spindle) Character-string None Code 1 (fixed) Probable Faulty Locations – Resolver trouble,…

Okuma Alarm-P 0869 MCS ABSO SCALE initialization failure An error occurred in initialization of ABSO SCALE. Object Axis name or none (spindle) Character-string None Code Same with Probable Faulty Locations…

Okuma Alarm-P 0870 MCS Magnetic encoder alarm The magnetic pulse generator has become unable to detect the motor speed. Or, the number of magnetic encoder gear teeth does not match…

Okuma Alarm-P 0877 MCS Servo data error The servo data sent from the NC for initialization or operation is not applicable to the inverter unit. If this alarm occurs after…

Okuma Alarm-P 0878 MCS Illegal command The NC and the inverter unit exchange commands and responses through the servo link. In this communication, the NC sent an abnormal or inexecutable…

Okuma Alarm-P 0868 MCS ABSO SCALE error An error occurred in initialization of ABSO SCALE. Object Axis name or none (spindle) Probable Faulty Locations – ABSO SCALE

Okuma Alarm-P 0872 MCS Pulse generator count over The PG (pulse generator) count value per one turn differs from the corresponding data specified in servo data file. Object Axis name…

Okuma Alarm-P 0875 MCS Servo link disconnection The servo link is disconnected, disabling the servo unit from receiving commands from the NC. Object Axis name or none (spindle) Character-string None…

Okuma Alarm-P 0876 Mistake in data from NC to MCS The NC and the inverter unit exchange commands and responses at constant intervals according to the specified protocol through the…

Okuma Alarm-P 0881 MCS DIFF over Axis movement caused a large positioning error. While the axis is in a target position or stopped, the target value and the calculated value…

Okuma Alarm-P 0873 MCS Motor overheat The motor temperature is abnormally high. Object Axis name or none (spindle) Character-string None Code YYYYZZZZ YYYY=0 (fixed) ZZZZ= 0010: Motor overheat ZZZZ= 0011:…

Okuma Alarm-P 0874 MCS Servo link error A communication error occurred in the servo link, disabling the servo unit from receiving commands from the NC. Object Axis name or none…

Okuma Alarm-P 0879 MCS CON speed over Increments for positioning command (SRCOND) issued from the NC to the inverter unit exceed the allowable limit. If this alarm occurs in the…

Okuma Alarm-P 0880 MCS Speed command over Speed command value issued from the NC to the inverter unit exceeds the allowable limit. Object Axis name or none (spindle) Character-string None…

Okuma Alarm-P 0886 MCS Collision detected The NC torque limiter has detected collision of axis by monitoring the relation between motor output torque and motor acceleration. Object Axis name or…

Okuma Alarm-P 0882 MCS APA speed over The position encoder value(RAPA) changes as the motor rotates. The NC checks this change with preset frequency. This alarm occurs if the change…

Okuma Alarm-P 0883 MCS Full-closed APA error Difference between the full-closed loop encoder value and the motor encoder value exceeds the allowable range. Object Axis name or none (spindle) Character-string…

Okuma Alarm-P 0884 MCS Over speed Actual motor speed is too high. Object Axis name or none (spindle) Character-string None Code Motor speed detected when this alarm occurred [(rev/4294967296)/Tv] Where,…

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…

Okuma Alarm-P 0891 MCS Calculated current position lies outside range An error occurred during calculation of APA. Object Axis name or none (spindle) Code XXXXXXXX 1: Linear axis division stroke…

Okuma Alarm-P 0894 MCS ABSO SCALE sub-slider detected error ERROR occurred by sub-slider of absoscale for the transfer spec. Index Axis or None Character-string None Code XXYYZZZZ XX E-link sequence…

Okuma Alarm-P 0895 MCS Tandem control communication error Concerning tandem control of synchronism-axis, The communication data that slave-axis received in communication between slave-station was ERROR. Object Axis(Main-spindle) or None Character-string…

Okuma Alarm-P 0896 MCS Full abso scale link error An alarm occurred in full absolute scale communication. Object AXIS or none (spindle) Character-string None Code XXYYZZZZ XX=FF Fixed YY=00 Fixed…

Okuma Alarm-P 0897 MCS Full abso scale error The full absolute scale has become unable to detect positional data. Object Axis name or none (spindle) Character-string None Code XXYYZZZZ XX=…