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

2.2.7

SGD7S-470A and -550A

Varistor
L1
Main
circuit
L2
power
supply
L3
-
1
-
2
Varistor
L1C
Control
L2C
power
supply
Voltage
Thyristor
sensor drive
Control
+
power
−
supply
Status display
CN3
Digital Operator

2.2.7 SGD7S-470A and -550A

B1/ +
B2
+
−
Overheat/overcurrent
protection
Voltage Temperature
Gate drive
sensor
sensor
Processor
(PWM control, position/
speed calculations, etc.)
CN7
Computer
2.2 Block Diagrams
Fan 1 Fan 2 Fan 3
Servomotor
U
V
M
W
Dynamic
brake circuit
Current
sensor
ENC
CN2
CN5
Analog Analog monitor
voltage
output
converter
CN1
Encoder divided
pulse output
I/O I/O signals
DeviceNet
Module
Feedback
Module
CN8
Safety function signals
2
2-17