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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.
Alwa
ys 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
3 SG
CN9
Surge
absorber
24VDC
MDS-R-V1/V2
10 VDD
5 COM
13 MBR
3 SG
CN9
24VDC
The ser
vo 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