Faults and Alarms | Issue 01/06 |
A0707 CB alarm 8
Cause
-
Diagnosis & Remedy
-refer to the CB User Manual
A0708 CB alarm 9
Cause
-
Diagnosis & Remedy
-refer to the CB User Manual
A0709 CB alarm 10
Cause
-
Diagnosis & Remedy
-refer to the CB User Manual
A0710 CB communications error
Cause
-loss of communications with the CB (communications module)
Diagnosis & Remedy
-check the CB hardware
A0711 CB communications error
Cause
-CB (communications module) signals a communications error.
Diagnosis & Remedy
-check the CB parameters
A0910 Vdc-max controller disabled/switched-out
Cause
-Vdc max controller was
This occurs,
-if the line supply voltage is permanently too high.
-if the motor is driven by an active load, which means that the motor goes into regenerative operation.
-while decelerating (short
Diagnosis & Remedy
Please check the following:
-is the input voltage (P0756) within the permissible range ?
-are load duty cycle and load limits within the permissible limits ?
A0911 Vdc-max controller active
Cause
-Vdc max controller is active
-the
A0912 Vdc-min controller active
Cause
-Vdc min controller is activated, if the DC link voltage (r0026) falls below the minimum value (refer to r0026 or P1240).
-the kinetic energy of the motor is used to buffer the DC link voltage and therefore to slow down the drive.
-therefore brief line failures no longer automatically result in an undervoltage trip.
318 | MICROMASTER 440 Parameter List |