Mitsubishi Electronics Q172HCPU, Q173HCPU manual 415

APPENDICES

Table 1.12 Servo error (2000 to 2899) list (Continued)

Error		Error cause	Error check	Error	Corrective action
code	Name	Description		processing
		• Servo amplifier failure			• Replace the servo amplifier.
		• The power supply was turned on and off			• The drive method is reviewed.
		continuously by overloaded status.
2045	Main circuit	• Ambient temperature of servo amplifier			• Review environment so that
	device overheat
		is over 55[°C] (131[°F]).			ambient temperature is 0 to
					55[°C] (32 to 131[°F]).
		• Used beyond the specifications of close			• Use within the range of
		mounting of servo amplifier.			specifications.
		• Ambient temperature of servomotor is			• Review environment so that
		over 40[°C] (104[°F]).			ambient temperature is 0 to
					40[°C] (32 to 104[°F]).
2046	Servomotor	• Servomotor is overloaded.			• Reduce load.
	overheat				• Review operation pattern.
					• Use servomotor that provides
					larger output.
		• Thermal sensor in encoder is faulty.			• Replace the servomotor.
		• Cooling fan life expiration			• Replace the cooling fan of the
					servo amplifier.
2047	Cooling fan	• Foreign matter caught in the fan stopped			• Remove the foreign matter.
	alarm	rotation.
		• The power supply of the cooling fan			• Replace the servo amplifier.
		failed.
		• Servo amplifier is used in excess	Any time during	Immediate	• Reduce load.
		of its continuous output current.	operation	stop	• Review operation pattern.
					• Use servomotor that provides
					larger output.
		• Servo system is instable and hunting.			• Repeat acceleration/
					deceleration to execute auto
					tuning.
					• Change auto tuning response
					setting.
					• Set auto tuning to OFF and make
					gain adjustment manually.
		• Machine struck something.			• Review operation pattern.
2050	Overload 1				• Install limit switches.
		• Wrong connection of servo motor.			• Connect correctly.
		(Servo amplifier's output terminals U, V,
		W do not match servo motor's input
		terminals U, V, W.)
		• Encoder faulty.			• Replace the servomotor.
		[Checking method]
		When the servomotor shaft is rotated
		with the servo off, the cumulative
		feedback pulses do not vary in
		proportion to the rotary angle of the shaft
		but the indication skips or returns
		midway.

APP - 28