Bose MR-J2S- B instruction manual Troubleshooting, Board error

9. TROUBLESHOOTING

Display	Name	Definition				Cause	Action
17	Board error 2	CPU/parts fault	Faulty parts in the servo amplifier				Change the servo amplifier.
19	Memory error 3	ROM memory fault			Checking method
				Alarm (17 or 19) occurs if power
				is switched on after CN1A, CN1B
				and CN3 connectors are
				disconnected.
1A	Motor	Wrong combination	Wrong combination of servo				Use correct combination.
	combination	of servo anplifier	amplifier and servo motor connected.
	error	and servo motor.
20	Encoder error 2	Communication	1.	CN2 connector disconnected.			Connect correctly.
		error occurred	2.	Encoder fault			Change the servo motor.
		between encoder	3.	Encoder cable faulty			Repair or change cable.
		and servo amplifier.		(Wire breakage or shorted)
24	Main circuit	Ground fault	1.	Power input wires and servo motor			Connect correctly.
	error	occurred at the		output wires are in contact at
		servo motor outputs		main circuit terminal block (TE1).
		(U,V and W phases)	2.	Sheathes of servo motor power			Change the cable.
		of the servo		cables deteriorated, resulting in
		amplififer.		ground fault.
			3.	Main circuit of servo amplifier			Change the servo amplifier.
				failed.
					Checking method
				Alarm (24) occurs if the servo is
				switched on after disconnecting
				the U, V, W power cables from
				the servo amplifier.
25	Absolute	Absolute position	1.	Battery voltage low			Change battery.
	position erase	data in error	2.	Battery cable or battery is faulty.			Always make home position setting again.
		Power was switched	3.	Super capacitor of the absolute			After leaving the alarm occurring for a few
		on for the first time		position encoder is not charged			minutes, switch power off, then on again.
		in the absolute					Always make home position setting again.
		position detection
		system.
30	Regenerative	Permissible	1.	Mismatch between used			Set correctly.
	alarm	regenerative power		regenerative brake option and
		of the built-in		parameter No. 2 setting
		regenerative brake	2.	Built-in regenerative brake			Connect correctly
		resistor or		resistor or regenerative brake
		regenerative brake		option is not connected.
		option is exceeded.	3.	High-duty operation or continuous			1. Reduce the frequency of positioning.
				regenerative operation caused the			2. Use the regenerative brake option of
				permissible regenerative power of			larger capacity.
				the regenerative brake option to			3. Reduce the load.
				be exceeded.
					Checking method
				Call the status display and check
				the regenerative load ratio.
			4.	Power supply voltage is abnormal.			Review power supply
				MR-J2S-		B:260V or more
				MR-J2S-		B1:135V or more
			5.	Built-in regenerative brake			Change servo amplifier or regenerative
				resistor or regenerative brake			brake option.
				option faulty.
		Regenerative	6.	Regenerative transistor faulty.			Change the servo amplifier.
		transistor fault
					Checking method
				1) The regenerative brake option
				has overheated abnormally.
				2) The alarm occurs even after
				removal of the built-in
				regenerative brake resistor or
				regenerative brake option.

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