Valid (OFF)

3. SIGNALS AND WIRING

(3)Timing charts

(a)Servo-on command (from controller) ON/OFF

Tb [ms] after the servo-on is switched off, the servo lock is released and the servo motor coasts. If the electromagnetic brake is made valid in the servo lock status, the brake life may be shorter. Therefore, when using the electromagnetic brake in a vertical lift application or the like, set Tb to about the same as the electromagnetic brake operation delay time to prevent a drop.

Coasting

Servo motor speed

0 r/min

 

(60ms)

Tb

Base circuit

ON

OFF (80ms)

Electromagnetic

Invalid(ON)

 

brake (MBR)

Valid(OFF)

Electromagnetic brake operation delay time

Servo-on command

ON

 

(from controller)

OFF

 

(b) Emergency stop command (from controller) or forced stop signal (EM1) ON/OFF

 

 

Dynamic brake

 

 

Dynamic brake

Servo motor speed

 

Electromagnetic brake

 

Electromagnetic brake

 

 

 

 

Electromagnetic brake release

 

(10ms)

(180ms)

Base circuit

ON

 

OFF

 

 

(180ms)

 

 

Electromagnetic

Invalid (ON)

Electromagnetic brake

brake interlock (MBR)

Valid (OFF)

operation delay time

 

 

Emergency stop command Invalid (ON) (from controller)

or

Forced stop (EM1)

3 - 20

Page 57
Image 57
Bose MR-J2S- B instruction manual Coasting Servo motor speed Min 60ms Base circuit