Omron Healthcare VARISPEEDF7 specifications EN-21, ‹ General Faults and Alarms

Troubleshooting

‹General Faults and Alarms

Faults and Alarms indicate unsusal inverter / application conditions.

An alarm does not necessarily switch off the inverter but a message is displayed on the keypad (i.e. a flashing alarm code) and an alarm output can be generated at the multi-function outputs (H2-01 and H2-02) if programmed. An alarm automatically disappears if the alarm condition is not present anymore.

A fault switches the inverter output off immediately, a message is displayed on the keypad and the fault output is switched. The fault must be reset manually after the cause and the RUN signal have been removed.

The following table shows a list of faults and alarms with their corrective actions.

Display	Alarm	Fault	Meaning		Corrective Actions
BUS			Option Card Communication Alarm	Check the connections and all user-side soft-
			After initial communication was established, the
Option Com Err			connection was lost.	ware configurations.
			Control Fault
CF			A torque limit was reached continuously for 3	Check the motor parameters
Out of Control			seconds or longer during a deceleration stop in
			Open Loop Vector control
CPF00				• Disconnect the Digital Operator and then
COM-			Digital Operator Communication Fault 1/2
ERR(OP&INV)			• Communication fault between Operator and		connect it again.
CPF01			Inverter	• Cycle the Inverter power supply.
COM-			• CPU External RAM Fault	•	Replace the Inverter.
ERR(OP&INV)
CPF02			CPF02 Fault
BB Circuit Err			Baseblock circuit error	• Perform an initialization to factory defaults.
CPF03			CPF03
				• Cycle the Inverter power supply.
EEPROM Error			EEPROM error	•	Replace the Inverter.
CPF04			CPF04
INternal A/D Err			CPU Internal A/D Converter Fault
			F1-04 = 0, 1 or 2 and A1-02 = 1 or 3	•	Reduce the load.
			The speed deviation has been greater than the	• Lengthen the acceleration and deceleration
			setting in F1-10 for a time longer than the setting		time
DEV			F1-11.	• Check the mechanical system
Speed Deviation				• Check the settings of F1-10 and F1-11
			F1-04 = 3 and A1-02 = 1 or 3
			The speed deviation has been greater than the	• Check the sequence and if the brake is
			setting in F1-10 for a time longer than the setting		opened when the inverter starts to increase
			F1-11.		the speed.
			Forward/Reverse Run Commands Input
EF			Together	Check external sequence logic, so that only
External Fault			Both the forward and the reverse run commands
			are input simultaneously for 500ms or more.	one input is activated at a time.
			This alarm stops the motor.
EF0			External fault input from Communications	• Check for an external fault condition.
				•	Verify the parameters.
Opt External Flt			Option Card	•	Verify communication signals
EFx			External fault at terminal Sx (x stands for termi-	Eliminate the cause of the external fault con-
Ext Fault Sx			nals S3 to S7)	dition.
Ext Run Active			Detected after a fault when a RESET command	Remove the RUN signal first and reset the
Cannot Reset			is input while the RUN command is still active	error.
				• Remove the motor and run the Inverter
					without the motor.
			Ground Fault	• Check the motor for a phase to ground
GF			The ground current at the Inverter output		short.
Ground Fault			exceeded 50% of the Inverter rated output cur-	• Check the output current with a clampmeter
			rent and L8-09=1 (Enabled).		to verify the DCCT reading.
				• Check the control sequence for wrong
					motor contactor signals.

EN-21