Yaskawa MP940 - Manual (Page 206)

System Startup
5.5.2 Typical Main Circuit Wiring
5-34
5.5.2 Typical Main Circuit Wiring
The following diagram shows a typical wiring example.
„ Designing a Power ON Sequence
Note the following points when designing the power ON sequence.
• Design the power ON sequence so that power is turned OFF when a servo alarm signal is
output. (See the circuit figure above.)
• Hold the power ON button for at least two seconds. The SERVOPACK will output a
servo alarm signal for two seconds or less when power is turned ON. This is required in
order to initialize the SERVOPACK.
1MCCB: Molded-case circuit breaker (for
the inverter) 1Ry: Relay
FIL: Noise filter 1PL: Indicator lamp
1MC: Magnetic Contactor 1SUP: Surge suppressor
1D: Flywheel diode
M
FIL
1Ry
1Ry 1MC
1MC 1SUP
1MC
L1
L2
L3
L1C
L2C
SGDM-□□AD
U
V
W
A
B
C
D
PG
CN1
31 +24V
ALM
ALM
-SG
32 1D 024V
1Ry
1MCCB
R S T
1PL
SERVOPACK
For servo alarm display
Main power
supply ON Main power
supply OFF
Power supply
2.0 s max.
Servo alarm (ALM)
output signal