4-17
4-4 Wiring Servo Motor
SIGNALS AND WIRING
- SV Series User’s Manual -
Electromagnetic Brake
When the power of servo amplifier is OFF, an electromagnetic brake should be used to prevent the movement of
movable part of machines because of the dead weight of movable part of servo amplifiers or external forces on them.
*1 I/O assignment of MECHATROLINK-II type.
*2 Power supply for electromagnetic brake can't be used for control I/O.
*3 Incrush current will happen at electromagnetic brake ON/OFF, so relay contacts must be used.
*4 In order to suppress the surge voltage occurred at electromagnetic brake ON/OFF, varistor or diode must be
connected.
If varistor or diode is connected, please pay attention to the braking delay for electromagnetic brake.
"5-5 Electromagnetic Brake Setting", page 5-28
"Electromagnetic brake timing" signal of pulse/analog input type servo amplifier is not assigned to
output terminals at ex-factory setting. Be sure to use the signal after assigned to output terminals.
For assigning method, see "5-3 I/O Signal Setting", page 5-18.
How to Prepare Cables
Encoder and motor power cables can be prepared with optional encoder and motor power connector kit .
Encoder and motor power connector kit are divided according to capacity of servo amplifiers as follows.
50W to 100W OP-84404
200W to 400W OP-84405
750W OP-84406
1kW to 2kW Encoder connector set OP-87066(angle), OP-87065(straight)
Motor power connector set OP-87064(angle), OP-87063(straight)
Electromagnetic brake connector set OP-87068(angle), OP-87067(straight)
3kW to 5kW Encoder connector set OP-87066(angle), OP-87065(straight)
Motor power connector set OP-87071(angle), OP-87070(straight)
Electromagnetic brake connector set OP-87068(angle), OP-87067(straight)
Encoder and motor power connector kit consist of the following accessories. Be sure to check if these accessories are
complete.
* Shape and number of contacts depends on the capacity of servo amplifier.
RA*3
*4
Emergency stop
Electromagnetic brake cable
Black
Black
DC24V *2
DC24V
1
26
RA
Servo amplifier
*2
*1
BRAKE
COM
-
(1) Encoder connector
(Servo amplifier side)
(2) Encoder connector
(Servo motor side)
(3) Motor power connector
*
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