Nx Networks NX series user manual 6086, Fault codes

7

60(86) Control keypad

7.3.4.2Fault codes

The fault codes, their causes and corrective actions are presented in the table below. The shadowed faults are A faults only. The faults written in white on black background may appear as both A and F fault.

Fault	Fault		Possible cause	Correcting measures
code
1	Overcurrent	Frequency converter has detected too		Check loading.
		high a current (>4*In) in the motor cable:		Check motor.
		− sudden heavy load increase		Check cables.
		− short circuit in motor cables
		−	unsuitable motor
2	Overvoltage	The DC-link voltage has exceeded the		Make the deceleration time longer. Use
		limits defined in Table 4-1.		brake chopper or brake resistor
		− too short a deceleration time		(available as options)
		− high overvoltage spikes in supply
3	Earth fault	Current measurement has detected that		Check motor cables and motor.
		the sum of motor phase current is not
		zero.
		− insulation failure in cables or motor
5	Charging switch	The	charging switch is open, when the	Reset the fault	and restart.
		START command has been given.
				Should the fault re-occur, contact your
		−	faulty operation
				nearest distributor..
		−	component failure
6	Emergency stop	Stop signal has been given from the
		option board.
7	Saturation trip	Very high overload		Cannot be reset from the keypad.
		Defective component		Switch off power. If this does not help
				contact your nearest distributor.
8	System fault	The	frequency converter troubleshooting	Reset the fault	and restart.
		system is unable to locate the fault.
				Should the fault re-occur, contact your
				nearest distributor.
9	Undervoltage	DC-link voltage is under the voltage limits		In case of temporary supply voltage
		defined in.		break reset the fault		and restart
		− most probable cause: too low a
				the frequency converter. Check the
			supply voltage
		−		supply voltage. If it is adequate, an
			frequency converter internal fault
				internal failure has occurred.
				Contact your nearest distributor.
10	Input line	Input line phase is missing.		Check supply voltage and cable.
	supervision
11	Output phase	Current measurement has detected that		Check motor cable and motor.
	supervision	there is no current in one motor phase.
12	Brake chopper	− no brake resistor installed		Check brake resistor.
	supervision	− brake resistor is broken		If the resistor is ok, the chopper is faulty.
		−	brake chopper failure	Contact your nearest distributor..
13	Frequency	Heatsink temperature is under –10°C
	converter under-
	temperature
14	Frequency	Heatsink temperature is over 90° C.		Check the correct amount and flow of
	converter over			cooling air.
	temperature	Over temperature warning is issued when		Check the heatsink for dust.
			°	Check the ambient temperature.
		the heatsink temperature exceeds 85 C.		Make sure that the switching frequency
				is not too high in relation to ambient
				temperature and motor load.
15	Motor stalled	Motor stall protection has tripped.		Check motor.