Servo Motor With An Electromagnetic Brake; Safety Precautions - Mitsubishi Electric MELSERVO-J3 Series Instruction Manual

4. SIGNALS AND WIRING

4.11 Servo motor with an electromagnetic brake

4.11.1 Safety precautions

CAUTION
Note the following when the servo motor equipped with an electromagnetic brake is used.
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 (RYn0) after the servo motor has stopped.
Using parameter No.PC16 (electromagnetic brake sequence output), set a time delay (Tb) at servo-off from
electromagnetic brake operation to base circuit shut-off as in the timing chart shown in section 4.11.2 in this
section.
Configure an electromagnetic brake circuit which is interlocked with an external
emergency stop switch.
Contacts must be opened when
servo-on (RYn0) OFF,
malfunction (ALM) OFF
or electromagnetic brake
interlock (MBR) OFF.
Servo motor
Electromagnetic
brake
The electromagnetic brake is provided for holding purpose and must not be used
for ordinary braking.
Before performing the operation, be sure to confirm that the electromagnetic brake
operates properly.
POINT
Refer to Servo Motor Instruction Manual (Vol.2) for specifications such as the
power supply capacity and operation delay time of the electromagnetic brake.
Refer to Servo Motor Instruction Manual (Vol.2) for the selection of a surge
absorber for the electromagnetic brake.
Circuit must be opened with
the emergency stop switch.
RA
B
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24VDC