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3. SIGNALS AND WIRING
3.7 Input power supply circuit
CAUTION
When the servo amplifier has become fault y, switch power off on the servo
amplifier power side. Continuous f low of a large current may cause a f ire.
Use the trouble signal to switch power off. O therwise, a regenerative brake
transistor fault or the like may overheat the regenerati ve brake resis tor, causin g 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.
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 su pply
RA OFF
Emergency ON
MC MC
SK
NFB MC
L1
L2
L3
L11
L21
VDD
COM
ALM RA
EMG
SON
SG
Servo-on
Servo amplifier
stop
3-Phase
Trouble
Emergency
stop
200 to 230 VAC