WEG MVW3000 Series, Programming Manual

Page: 196 / 264

7
DIAGNOSTICS AND TROUBLESHOOTING
Fault/alarm Reset Possible causes
F0078
Motor Over Temperature
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Motor temperature above the fault level set on the
thermal protection relay.
Digital input signal, coming from the thermal pro-
tection relay, set to ”Fault on the motor” at low
level.
F0079
Signals of the motor speed sensor
defective
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Wiring between the motor speed sensor and the
inverter interface board defective.
Speed sensor defective.
Cable length longer than the specified limit.
Speed sensor incorrectly installed on the motor.
F0080
CPU watchdog error
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Electric noise on the control boards.
F0082
Copy function not allowed
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Attempt to copy parameters from the HMI to the
inverter with incompatible software versions.
F0083
Inverter Setup Fault
Automatically eliminated when incom-
patible parameters are changed. Attempt to set a parameter incompatible with the
others.
See Table 4.5 on page 4-10 .
A0084
Incorrect programming of inverter
model
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Incorrect programming of inverter model.
Incompatibility between the inverter current
(P0295) and voltage (P0296) parameters; see
values in the product manual.
F0085
Electronic power supply fault
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Power supply monitoring signal keeps indicating
electronics power supplies not OK.
F0087
Control boards communication
fault
Automatically eliminated when the
MVC3 and MVC4 control boards
reestablish communication
Fault on the serial communication circuit of the
MVC3 board.
Fault on the serial communication circuit of the
MVC4 board.
Fiber optic cables not connected or defective.
F0090
External DIx open fault
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Digital input set to ”No external fault” open (no
feedback of +24 V).
For further details on this DI function, refer to the
inverter project.
F0092
Pre-charge supply fault
Power-on.
Manual (
O
/RESET key).
Auto-reset.
DIx.
Networks.
Short-circuit on the pre-charge system.
Pre-charge capacitors defective.
Pre-charge resistors defective.
Pre-charge circuit breaker open.
Wiring of DI7 input of PIC board (XC7:16) open
(no feedback of +24 V).
A0094
Cooling system supply fault
It resets automatically after the cause is
eliminated. Short circuit in the ventilation system.
Fan locked.
Circuit breakers that feed the inverter ventilation
system open.
Wiring of DI10 input of PIC board (XC7:15) open
(no feedback of +24 V).
MVW3000 | 7-4