Power Line Circuit; Connection Example - Mitsubishi Electric MR-J2S B Series Instruction Manual

3. SIGNALS AND WIRING

3.5 Power line circuit

CAUTION

3.5.1 Connection example

Wire the power supply/main circuit as shown below so that power is shut off and the servo-on command
turned off as soon as an alarm occurs, a servo forced stop is made valid, or a controller forced stop is made
valid. A no-fuse breaker (NFB) must be used with the input cables of the power supply.
(1) For 3-phase 200 to 230V power supply
Power supply
3-phase
200 to 230V
Note 1. Make sure to connect P
2. Configure up the power supply circuit which switches off the magnetic contactor after detection of alarm occurrence on the
controller side.
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.
Switch power off at detection of an alarm. Otherwise, a regenerative transistor fault
or the like may overheat the regenerative resistor, causing a fire.
POINT
For the power line circuit of the MR-J2S-11KB to MR-J2S-22KB, refer to
section 3.12 where the power line circuit is shown together with the servo
motor connection diagram.
(Note 2)
Alarm
RA1
NFB
Forced stop
-P. (Factory-wired.) When using the power factor improving DC reactor, refer to section 12.2.4.
1
Controller
forced stop
Forced
OFF
stop
RA2
MC
(Note 1)
VDD
COM
EM1
3 - 14
ON
MC
MC
SK
Servo amplifier
L
1
L
2
L
3
L
11
L
21
P
P
1
SG