Sgd7S-470A And -550A - YASKAWA SGD7S Product Manual

2.2 Block Diagrams

2.2.7 SGD7S-470A and -550A

2.2.7 SGD7S-470A and -550A
Main
circuit
power
supply
Control
power
supply
2-16
Varistor
L1
L2
L3
1
2
Voltage
sensor
Varistor
L1C
+
−
L2C
Panel Operator
CN11 CN12
Option Module Option Module
B1/
+
−
Thyristor
drive
Voltage
sensor
Control
power
supply
CN3 CN7
Digital Operator Computer
+
B2
Fan 1 Fan 2
Overheat/overcurrent
Dynamic
protection
brake circuit
Temperature Current
Gate drive
sensor sensor
Analog
voltage
converter
Processor
(PWM control, position/
speed calculations, etc.)
A/D
I/O
CN8
Safety function signals
Fan 3
Servomotor
U
V
M
W
ENC
CN2
CN5
Analog monitor
output
CN1
Reference pulse input
Encoder divided
pulse output
Reference voltage
input
I/O signals