YASKAWA E-7-Series SGD7S - Power Supply Wiring Diagrams

4.3 Wiring the Power Supply to the SERVOPACK
4.3.4 Power Supply Wiring Diagrams
4-14
• Design the power ON sequence so that main circuit power supply is turned OFF when an
ALM (Servo Alarm) signal is output.
• Make sure that the power supply specifications of all parts are suitable for the input power
supply.
• Allow at least 100 ms after the power supply is turned OFF before you turn it ON again.
4.3.4 Power Supply Wiring Diagrams
Using Only One SERVOPACK
• Wiring Example for Three-Phase, 200-VAC Power Supply Input
* You do not have to connect B2 and B3 for the following models: SGD7S-R70A, SGD7S-R90A, SGD7S-
1R6A, and SGD7S-2R8A. Do not connect them.
Turn ON the control power supply and the main circuit power supply at the same time or turn ON
the control power supply before the main circuit power supply.
Turn OFF the main circuit power supply first, and then turn OFF the control power supply.
WARNING
 Even after you turn OFF the power supply, a high residual voltage may still remain in the
SERVOPACK. To prevent electric shock, do not touch the power supply terminals after you
turn OFF the power. When the voltage is discharged, the CHARGE indicator will turn OFF.
Make sure the CHARGE indicator is OFF before you start wiring or inspection work.
Up to 5.0 s
Control power supply
Servo Alarm (ALM)
output signal
Alarm cleared.
Alarm
Power ON
Main circuit power supply
Important
2KM
L1
SERVOPACK
0 V
1Ry
+
−
31
32
1D
B2
B3
L2
CN1
1KM
L1C
L3
L2C
1QF
R
S T
1FLT
+24 V
1
2
3SA
*
B1/
1QF: Molded-case circuit breaker
1FLT: Noise Filter
1KM: Magnetic Contactor
(for control power supply)
2KM: Magnetic Contactor
(for main circuit power supply)
1Ry: Relay
1PL: Indicator lamp
1SA: Surge Absorber
2SA: Surge Absorber
3SA: Surge Absorber
1D: Flywheel diode
(For servo alarm
display)
1PL
1KM
2KM
1SA
Servo power
ON
Servo power
OFF
2SA
1KM
1Ry
1KM
ALM
ALM
1Ry
S_Analog