Mitsubishi Electronics MR-J2S- A instruction manual Y4A, ABS Y4B

15. ABSOLUTE POSITION DETECTION SYSTEM

15.10Absolute position data transfer errors 15.10.1 Corrective actions

(1)Error list

The number within parentheses in the table indicates the output coil or input contact number of the

A1SD71 (AD71).

Name	Output coil		Description		Cause	Action
	AD71	1PG
(Note)	Y49	Y11	1. The ABS data transfer mode	1.	Wiring for ABS transfer mode	Correct the wiring.
ABS			signal (Y41) is not completed		signal, ABS data request
communication			within 5s.		signal, or ready to send signal
error			2. The ready to send signal		is disconnected or connected to
			(X32) is not turned OFF		the SG terminal.
			within 1s after the ABS data	2.	PC ladder program wrong.	Correct the ladder.
			request signal (Y42) is turned	3.	Faulty PLC output or input	Change the input or output
			ON.		module.	module.
			3. The ready to send signal	4.	Faulty printed board in the	Change the amplifier
			(X32) remains OFF for longer		servo amplifier.
			than 1s.	5.	Power supply to the servo	Turn on the power to the servo
					amplifier is OFF.	amplifier.
ABS data	Y4A	Y12	ABS data sumcheck resulted	1.	Wiring for the ABS data	Correct the wiring.
check sum			in mismatch four times		signal (ABS bit 0 (PF), bit 1
error			consecutively.		(ZSP)) is disconnected or
					connected to the SG terminal.
				2.	PC ladder program wrong.	Correct the ladder.
				3.	Faulty PLC input module.	Change the input module.
				4.	Faulty printed board in the	Change the amplifier.
					servo amplifier.
ABS	Y4B		The motor position is in the	1.	The servo is turned ON or the	1. Reconsider the position
coordinate			negative coordinate value		power supply is turned ON	where the servo is turned
error			range when the servo is		near the machine home	ON.
			turned ON or when power		position or in the zone in	2. Set the home position for
			supply is turned ON.		which addresses decrease.	positioning apart from the
						machine home position.
				2.	The machine falls on a	Change the electromagnetic
					vertical axis when the servo	brake operation sequence.
					signal is turned ON/OFF.
Servo alarm	Y48	Y10	Alarm occurred in the servo	1.	Emergency stop (EMG) of the	After ensuring safety, turn
			amplifier.		servo amplifier was turned	EMG on.
					off.
				2.	Trouble (ALM) of the servo	Refer to Section 10.2.2 and take
					amplifier was turned on.	action.

Note: Refer to (2) in this section for details of error occurrence definitions.

15 - 64