Mitsubishi Electronics QD75P Outside unit setting, Range Outside pulse, Amount per rotation

15 TROUBLESHOOTING

MELSEC-Q

Classification	Error	Error name	Error	Operation status at error occurrence
of errors	code
	900	Outside unit setting	The set range of the basic parameter
		range	1 "Unit setting" is outside the setting
			range.
		Outside pulse	The set range of the basic parameter
	901	number per rotation	1 "No. of pulses per rotation" is
		range	outside the setting range.
		Outside movement	The set range of the basic parameter
	902	amount per rotation	1 "Movement amount per rotation" is
		range	outside the setting range.
		Outside unit	The set range of the basic parameter
	903		1 "Unit magnification" is outside the
		magnification range		The QD75 READY signal (X0) is not
			setting range.	turned ON.
		Pulse output mode	The set range of the basic parameter
	904		1 "Pulse output mode" is outside the
		error	setting range.
		Rotation direction	The set range of the basic parameter
	905		1 "Rotation direction setting" is
		setting error
			outside the setting range.
			• The set range of the basic
		Outside bias speed	parameter 1 "Bias speed at start" is
	906		outside the setting range.
		range
			• The bias speed exceeds the speed
			limit.
			• The set range of the basic
Parameter			parameter 2 "Speed limit value" is
			outside the setting range.
			• The value obtained by the
	910	Outside speed limit	conversion of the speed limit value
		value range	with respect to the frequency	When the power is turned ON or PLC
			exceeds the maximum output	READY signal (Y0) is turned from
			frequency of the unit.	OFF to ON:
			• The speed limit value is smaller	QD75 READY signal (X0) is
			than the OPR speed.	not turned ON.
	911	Outside acceleration	The set range of the basic parameter	At start: The system will not operate.
		time 0 range	2 "Acceleration time 0" is outside the
			setting range.
		Outside deceleration	The set range of the basic parameter
	912		2 "Deceleration time 0" is outside the
		time 0 range	setting range.
		Backlash	The value converted into pulse
	920	compensation	number using the movement amount
		amount error	per pulse is 256 pulses or more.
			• In the unit of degree, the set value
			of the detailed parameter 1	The QD75 READY signal (X0) is not
			"Software stroke limit upper limit
				turned ON.
	921	Software stroke limit	value" is outside the setting range.
		upper limit	• In a unit other than degree, the
			software stroke limit upper limit
			value is smaller than the software
			stroke limit lower limit value.

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