Input Power Supply Circuit; Connection Example - Mitsubishi Electric MR-J2S-CP 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 circuit 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
Always connect a magnetic contactor (MC) between the main circuit power supply
and L L and L of the servo amplifier, and configure the wiring to be able to shut
, ,
1 2 3
down the power supply on the side of the servo amplifier's power supply. If a
magnetic contactor (MC) is not connected, continuous flow of a large current may
cause a fire when the servo amplifier malfunctions.
Use the trouble signal to switch power off. Otherwise, a regenerative transistor
fault or the like may overheat the regenerative resistor, causing a fire.
RA
NFB MC
Forced stop
Servo-on
Forced
ON
OFF
stop
MC
Servo amplifier
L
1
L
2
L
3
L
11
L
21
EMG
SON
SG
3 - 25
MC
SK
VDD
COM
ALM RA
Trouble