Bose MR-J2S- B Servo motor with electromagnetic brake, 1Connection diagram, 2Setting, Point

3. SIGNALS AND WIRING

3.7 Servo motor with electromagnetic brake

Configure the electromagnetic brake operation circuit so that it is activated not only by the servo amplifier signals but also by an external forced stop signal.

CAUTION

Contacts must be open when
servo-on signal is off or when an	Circuit must be
alarm (trouble) is present and when	opened during
an electromagnetic brake signal.	forced stop signal.

Servo motor

RA EM1

24VDC

Electromagnetic brake

The electromagnetic brake is provided for holding purpose and must not be used for ordinary braking.

POINT

Refer to the Servo Motor Instruction Manual for specifications such as the power supply capacity and operation delay time of the electromagnetic brake.

Note the following when the servo motor equipped with electromagnetic brake is used for applications requiring a brake to hold the motor shaft (vertical lift applications):

1)Do not share the 24VDC interface power supply between the interface and electromagnetic brake. Always use the power supply designed exclusively for the electromagnetic brake.

2)The brake will operate when the power (24VDC) switches off.

3)Switch off the servo-on command after the servo motor has stopped.

(1)Connection diagram

Servo amplifier					Forced			Servo motor
				RA
	VDD					stop	B1
	COM
			24VDC				Z
	MBR	RA
							B2

(2)Setting

In parameter No.21 (electromagnetic brake sequence output), set the time delay (Tb) from electromagnetic brake operation to base circuit shut-off at a servo off time as in the timing chart in (3) in this section.

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