4 Electrical Installation
14
YASKAWA ELECTRIC
TOBP C730600 39A YASKAWA AC Drive-Option Card DI-A3 Installation Manual
SINK Mode
• To use the drive’s internal powers supply, short circuit terminals SP and SC.
• To use an external power supply, connect the positive lead from the power supply to
terminal SC on the option card. Do not connect the negative lead to terminal SN on the
option card.
SOURCE Mode
• To use the drive’s internal powers supply, short circuit terminals SN and SC.
• To use an external power supply, connect the negative lead from the power supply to
terminal SC on the option card. Do not connect the positive lead to terminal SP.
䋫
Internal power supply wiring
Photocoupler
Photocoupler
Signal
processor
External power supply wiring
External
power supply
24 Vdc
Signal
processor
360
㩷
Ω
3.3
㫂
Ω
0 V
24 V
360
Ω
㪊㪅㪊㫂
Ω
0 V
24 V
D0
〜
DF,SI,SE
SC
SN
SP
D0
〜
DF,SI,SE
SC
SN
SP
䋫
Photocoupler
Photocoupler
External
24 Vdc
Internal power supply wiring
External power supply wiring
Signal
processor
D0
〜
DF,SI,SE
SC
SN
SP
D0
〜
DF,SI,SE
SC
SN
SP
360
Ω
3.3
㫂
Ω
0 V
24
㩷㪭
360
Ω
3.3
㫂
Ω
0 V
24 V
Signal
processor