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3. SIGNALS AND WIRING
3.13.1 Connection example
Wire the power supply/main circuit as shown below so that power is shut off and the servo-on signal
turned off as soon as an alarm occurs, a servo emergency stop is made valid, a controller emergency stop,
or a servo motor thermal relay alarm is made valid. A no-fuse breaker (NFB) must be used with the input
cables of the power supply.
L
1
L2
L
3
L
11
L
21
EMG
SON
SG
CN2
U
V
W
U
V
W
M
BU
RA2
BV
BW
MC
SK
ON
MC
NFB MC
OHS2OHS1
ALM
COM
VDD
RA1
Servo motor
thermal relay
RA2
Alarm
RA1
emergency stop
OFF
3-phase
200 to 230VAC
Servo amplifier
(Note 1)
Dynamic
break
Servo motor
HA-LFS series
Encoder
(Note 2)
Servo motor
thermal relay
24VDC
power supply
Emergency stop
servo-on
MR-JHSCBL M
cable
Trouble
P
P
1
(Note 3)
Cooling fan
Note 1. When using the external dynamic break, refer to section 13.1.4.
2. Cooling fan power supply of the HA-LFS11K2 servo motor is 1-phase. Power supply specification of the cooling fan is
different from that of the servo amplifier. Therefore, separate power supply is required.
3. Always connect P
1 and P. (Factory-wired). When using the power factor improving DC reactor, refer to section 13.2.4.