Baldor VS1MD instruction manual Cooling system has Check for foreign

Table 9.2 – Corrective Actions

Inverter	•	Cooling system has	•	Check for foreign
overheat		problems.		substances clogged in
				the heat sink.
	•	Cooling fan has failed.	•	Replace the old
				cooling fan with a new
				one.
	•	Ambient temperature	•	Keep ambient
		is too high.		temperature under 50
				degrees C.
Output Phase	•	Faulty contact in	•	Replace or repair
loss		output contactor.		output contactor.
	•	Faulty output wiring	•	Check output wiring.
Cooling Fan	•	An foreign substance	•	Check the ventilating
Fault		is clogged in a		slot and remove the
		ventilating slot.		clogged substances.
	•	Cooling fan has failed.	•	Replace the cooling
				fan.
Over voltage	•	Decel time is too short	•	Increase the Decel
		for the inertia of the		time.
		load.
	•	Regenerative load is	•	Use Dynamic Brake
		connected to the		Unit.
		drive.
	•	Line voltage is too	•	Check to see if line
		high.		voltage exceeds the
				rating.
Low voltage	•	Line voltage is low.	•	Check to see if line
				voltage is below the
				rating.
	•	Load larger than line	•	Check the incoming
		capacity is connected		AC line. Adjust the
		to line (ex: welding		line capacity
		machine, motor with		corresponding to the
		high starting current		load.
		connected to the
		commercial line).
	•	Faulty contactor on	•	Change contactor.
		the input of the
		inverter.

9-8 VS1-MD AC Drive User Manual