Nx Networks NX series user manual 8586

9

Fault tracing 85(86)

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.
16	Motor	Motor overheating has been detected by		Decrease the motor load.
	overtemperature	frequency converter motor temperature		If no motor overload exists, check the
		model. Motor is overloaded.		temperature model parameters.
17	Motor underload	Motor underload protection has tripped.
22	EEPROM	Parameter save fault
23	checksum fault	−	faulty operation
		−	component failure
24	Changed data	Changes may have occurred in the		No special actions required. Take a
	warning	different counter data due to mains		critical attitude to the counter data.
		interruption
25	Microprocessor	−	faulty operation	Reset the fault	and restart.
	watchdog fault	−	component failure
				Should the fault re-occur, contact your
				nearest distributor.
32	Fan cooling	Cooling fan of the frequency converter		Contact your nearest distributor.
		does not start, when ON command is
		given
34	CAN bus	Sent message not acknowledged.		Ensure that there is another device on
	communication			the bus with the same configuration.
36	Control unit	NXS Control Unit can not control NXP		Change control units
		Power Unit and vice versa
37	Device change	Option board changed.		Reset
		Different power rating of drive.
38	Device added	Option board added.		Reset
		Drive of different power rating added.
39	Device removed	Option board removed.		Reset
		Drive removed.
40	Device unknown	Unknown option board or drive.
41	IGBT temperature	IGBT Inverter Bridge overtemperature		Check loading.
		protection has detected too high a short		Check motor size.
		term overload current
42	Brake resistor	Brake resistor overtemperature protection		Set the deceleration time longer.
	overtemperature	has detected too heavy braking		Use external brake resistor.
43	Encoder fault	Note the exceptional Fault data record.		Check encoder channel connections.
		See 7.3.4.3. Additional codes:		Check the encoder board.
		1 = Encoder 1 channel A is missing
		2 = Encoder 1 channel B is missing
		3 = Both encoder 1 channels are missing
		4 = Encoder reversed
50	Analogue input	Current at the analogue input is < 4mA.		Check the current loop circuitry.
	Iin < 4mA	− control cable is broken or loose
	(selected signal	− signal source has failed
	range 4 to 20
	mA)
51	External fault	Digital input fault.
52	Keypad	The connection between the control		Check keypad connection and possible
	communication	keypad and the frequency converter is		keypad cable.
	fault	broken.

Table 9-1. Fault codes