Справочник Пользователя для Mitsubishi Electronics MDS-R

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7. Wiring and Connection 
 
 
 
 
 
7 - 18
7-8  Wiring of the motor brake  
 
The magnetic brakes of servomotors with magnetic brakes are driven by the control signal (MBR) output 
by the servo drive unit MDS-R-V1/V2. The servo drive unit releases the brakes when the motor is ON. 
(Servo ON means when torque is generated in the motor.) 
No parameters need to be set to use the motor brake control output (MBR). 
 
7-8-1  Motor brake control signal (MBR) output circuit 
 
The motor brake power supply is controlled via a relay. When using an inductive load, install a diode. 
(Tolerable current: 40mA or less, rush current: 100mA or less) 
 
 
 
When using an internal power supply 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
When using an external power supply 
 
 
 
 
The servo drive unit will fa
if the diode polarity is 
incorrect. 
il 
MDS-R-V1/V2 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
POINT
 
When using the internal power supply, the power can be directly connected 
to VDD if using only the digital output (MC, MBR). When using the digital 
input (EMGX), always connect across VDD-COM. 
 
 
 
CAUTION
 
1.   Always install a surge absorber near the motor's brake terminal to 
eliminate noise and protect the contacts. Refer to section "5-4 Surge 
absorber".  
2.   The magnetic brakes cannot be directly driven with the output signal from 
the servo drive unit. Always install a relay. 
3.   The magnetic brakes cannot be driven by the servo drive unit's VDD 
(24VDC). Always install a separate power supply. 
 
Always install a surge 
absorber. 
24VDC
Brake control relay  
(The brakes cannot be directly driven 
by an internal power supply.) 
Brake 
10  VDD 
5  COM 
13  MBR 
SG 
CN9 
Surge 
absorber 
24VDC
 
MDS-R-V1/V2 
10  VDD 
5  COM 
13  MBR 
SG 
CN9 
24VDC
The servo drive unit will fa
if the diode polarity is 
incorrect. 
il 
27VDC 
or less
24VDC
 
Brake control relay  
(The brakes cannot be directly driven 
by an internal power supply.) 
Always install a surge 
absorber. 
Surge 
absorber 
Brake