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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 servoamplifier 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 braketransistor fault or the like may overheat the regenerati ve brake resis tor, causin g afire.3.7.1 Connection exampleWire the power supply and main circuit as shown below so that the serv o-on signal turn s off as soon asalarm occurrence is detected and power is shut off.A no-fuse breaker (NFB) must be used with the input cables of the power supply.
L1
L2
L11
L21
MCNFB Servo amplifier
For 1-phase 100VAC or 1-phase 230VAC power supply
Note. Not provided for 1-phase 100 to 120VAC.
1-phase
100 to 120
VAC
or 1-phase
230VAC L3 (Note)
MC MC
SK
NFB MC
L1
L2
L3
L11
L21
EMG
SON
SG
VDD
COM
ALM RA
3-phase
2
00 to 230VAC
Servo amplifier
Trouble
Emergency stop
ON
OFF
Emergency
stop
RA
Servo-on