CHAPTER 7 - DIAGNOSTICS AND TROUBLESHOOTING
Power Supply voltage is too low, check Power Supply voltage:
220-230 V Models - Power Supply < 154 V
380-480 V Models - Power Supply < 266 V
500-600 V and 500-690 V Models - Power Supply < 361 V
660-690 V Models - Power Supply < 462 V
Phase loss at the inverter input
Ambient temperature too high (> 40 °C) and/or output current too high;
or ambient temperature < -10 ºC
Blowers locked or defective
Auxiliary circuit fuse blown (only valid for 105 A and 130 A/220-230 V,
86 A to 600 A/380-480 V and 44A to 79 A/500-600 V refer to item 3.2.3)
Problem with the supply voltage - voltage sag or interruption (phase
loss) - last for more than 2 seconds and with the phase loss detection
Signal with inverted Polarity at Analog inputs AI1/AI2
P156, P157 and P158 set too low for the motor being used
Motor is under an actual overload condition
Any DIx (DI3 to DI7) programmed for external fault detection (P265 to
P270 set to 4 – No Ext Flt) is open (not connected to + 24 V)
Terminal block XC12 on the control board CC9 is not properly connected
Miswiring between encoder and terminal block XC9 (optional board
Memory with corrupted values
A bid to copy the HMI parameters to the inverter with different Software
Short-circuit between one or more output phases and ground
Motor cable capacitance to ground is too high
- Faults and possible causes
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