FANUC AC Servo Amplifier alarms
Fanuc AC Servo Amplifier alarms. These Alarm and Error Codes cover AC digital servo amp series A06B-6057, and S series amplifier servo drives A06B-6058
The LED indicators on the printed circuit boards of a servo amplifier indicate states of the servo amplifier.
|Alarm Code||Colour||Description of Alarm/Error|
|5V||Green||SIGN FOR CONTROL POWER ON|
5V indicates the state of power source applied on the board
|DRDY||Green||SIGN FOR PWM SIGNAL AVAILABLE|
DRDT indicates the ready state f servo servo amplifier. The condition of DRDY is no alarm and MCON from NC being low.
|HV||Red||HIGH VOLTAGE ALARM|
HV occurs when excessive current has crossed the DC link
|HC||Red||HIGH CURRENT ALARM|
HC occurs when excessive current has crossed the DC link.
|LV||Red||LOW VOLTAGE ALARM|
LV occurs when the DC link voltage is excessively low or the regulator circuit has a malfunction.
DC occurs when the capacity of the the discharge circuit has been exceeded.
OH occurs when a normally closed thermostat contact which is mounted either in the servo amplifier, on a separate discharge unit, or in a power transformer has opened.
|FAL||Red||In case of fuse alarm NFB1-3 and trip of F4/F5.|