Bose MR-J2S- B Overcurrent, overload 1 or overload, Regenerative alarm, Off, Yes

3. SIGNALS AND WIRING

3.3 Alarm occurrence timing chart

When an alarm has occurred, remove its cause, make sure that the operation CAUTION signal is not being input, ensure safety, and reset the alarm before restarting

operation.

When an alarm occurs in the servo amplifier, the base circuit is shut off and the servo motor is coated to a stop. Switch off the main circuit power supply in the external sequence. To deactivate the alarm, power the control circuit off, then on or give the error reset or CPU reset command from the servo system controller. However, the alarm cannot be deactivated unless its cause is removed.

Main circuit	power		ON
Control circuit
			OFF
Base circuit			ON
			OFF
Dynamic brake			Valid
		Invalid
Servo-on command			ON
(from controller)			OFF
Alarm
Reset command			ON
(from controller)			OFF

	Power off	Power on
Brake operation	Brake operation
NO	YES	NO

1s

50ms or more 60ms or more

Alarm occurs. Remove cause of trouble.

(1)Overcurrent, overload 1 or overload 2

If operation is repeated by switching control circuit power off, then on to reset the overcurrent (32), overload 1 (50) or overload 2 (51) alarm after its occurrence, without removing its cause, the servo amplifier and servo motor may become faulty due to temperature rise. Securely remove the cause of the alarm and also allow about 30 minutes for cooling before resuming operation.

(2)Regenerative alarm

If operation is repeated by switching control circuit power off, then on to reset the regenerative (30) alarm after its occurrence, the external regenerative brake resistor will generate heat, resulting in an accident.

(3)Instantaneous power failure

Undervoltage (10) occurs if power is restored after a 60ms or longer power failure of the control circuit power supply or after a drop of the bus voltage to or below 200VDC. If the power failure persists further, the control circuit power switches off. When the power failure is reset in this state, the alarm is reset and the servo amplifier returns to the initial state.

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