Fanuc DC Axis Alarms
Fanuc DC Axis Unit Alarms and Error Codes listed on this page only cover the M Series DC Axis units series 6047 (Yellow cap motors).
If your interested in finding stock of Fanuc DC Axis drive units (Velocity Control Unit).
| Indication | Type | Description of Alarms |
| NC | Overload | Overload alarm occurs if the motor current exceeds the current required to actuate the thermal relay. Or if the power transformer thermostat or the regenerative discharge unit thermostat operates |
| TGLS | Tacho Generator | Motor speed exceeds the specified upper limit due to a break in in the velocity feedback wire, the TGLS indicator goes on. The motor is stopped by the dymanic brake. |
| OVC | Over Current | Motor current exceeds the specified upper limit for more than the fixed period ( about 600 msec), the OVC indicator goes on. The motor is stopped by the dynamic brake. |
| BRK | Circuit Breaker | Abnormal current exceeding the rating limit of the breaker is applied to the motor, the circuit breaker operates. The motor is stopped by the dynamic brake. |
| HVAL | Over Voltage | AC input voltage applied to the servo transformer exceeds the allowable value, the HVAL indictator goes on. The motor is stopped by the dynamic brake. |
| HCAL | Low Voltage | AC power source voltage drops abnormally, the LVAL indicator goes on. The motor is stopped by the dynamic brake. |
| DCAL | DC Issue | Abnormal current is applied to the transistor bridge circuit, the HCAL indicator goes on. The motor is stopped by the dynamic brake. |
Contact us if you require further information about your drive being faulty. We only deal with companies from the US or Canada. We have agents whom deal with companies in different countries of the world. Please visit directory section.