Input Power Supply Circuit; Connection Example - Mitsubishi Electric MELSERVO MR-J2S- A Instruction Manual

3. SIGNALS AND WIRING

3.7 Input power supply circuit

CAUTION

3.7.1 Connection example

Wire the power supply and main circuit as shown below so that the servo-on (SON) turns off as soon as
alarm occurrence is detected and power is shut off.
A no-fuse breaker (NFB) must be used with the input cables of the power supply.
(1) For 3-phase 200 to 230VAC power supply
3-Phase
200 to 230 VAC
When the servo amplifier has become faulty, switch power off on the servo
amplifier power side. Continuous flow of a large current may cause a fire.
Use the trouble signal to switch power off. Otherwise, a regenerative brake
transistor fault or the like may overheat the regenerative brake resistor, causing a
fire.
POINT
For the power line circuit of the MR-J2S-11KA to MR-J2S-22KA, refer to
Section 3.13 where the power line circuit is shown together with the servo
motor connection diagram.
Emergency
RA
NFB MC
Emergency
stop
Servo-on
ON
stop
OFF
MC
Servo amplifier
L
1
L
2
L
3
L
11
L
21
EMG
SON VDD
SG COM
ALM
3 - 46
MC
SK
Trouble
RA