Zapi ACE2 User Manual

AF2ZP0CL - ACE2 - User Manual Page - 79/85
Troubleshooting:
- It could be a problem of the contacts in the MC that are not working
(does not pull-in), try replacing the MC.
- If the contactors of MC are working correctly than the problem is in the
controller, replace it.
27) LOGIC FAILURE #2
Cause:
Fault is in the hardware section of the logic board which manages the
phase’s voltage feedback.
Troubleshooting:
This type of fault is not related to external components, so when it happens it
is necessary to replace the ACE2 logic board.
28) CONTACTOR DRIVER
Cause:
The MC coil driver is not able to drive the load. The device itself or its driving
circuit is damaged.
Troubleshooting:
This type of fault is not related to external components; replace the ACE2
logic board.
29) AUX DRIVER OPEN
Cause:
The EB/AUX coil driver is not able to drive the load. The device itself or its
driving circuit is damaged.
Troubleshooting:
This type of fault is not related to external components; replace the ACE2
logic board.
30) ENCODER ERROR
Cause:
This fault is signalled in following conditions: the frequency supplied to the
motor is higher than 40 Hz and the signal feedback from the encoder has a
jump higher than 40 Hz in few tens mSec. This condition is related to a
malfunctioning of the encoder.
Troubleshooting:
- Check both the electric and the mechanical encoder functionality, the
wires crimping.
- Check the encoder mechanical installation, if the encoder slips inside its
compartment raising this alarm condition.
- Also the electromagnetic noise on the sensor bearing can be a cause for
the alarm. In these cases try to replace the encoder.
- If the problem is still present after replacing the encoder, the failure is in
the controller.
31) WRONG RAM MEMORY
Cause:
The algorithm implemented to check the main RAM registers finds a wrong
contents: the register is “dirty”. This alarm inhibit the machine operations.
Troubleshooting:
Try to switch the key off and then on, if the alarm is still present replace the
ACE2 logic board.

Zapi ACE2 Specifications

General

Brand	Zapi
Model	ACE2
Category	Inverter
Language	English