YASKAWA GA700 Series

Electrical Installation
3
3.5 Control Circuit Wiring
YASKAWA SIEPC71061705H GA700 Series Technical Manual 99
*4 If the motor shaft can rotate while the 24 V control power supply is energized and the main circuit power supply is de-energized, re-
energize the 24 V control power supply and energize the main circuit power supply.
*5 When you use an external 24 V power supply, the operation of the Analog Output option is different for different drive software
versions. On drives with software versions PRG:09015 and later, the Analog Output option (AO-A3) can output the analog signals.
Note:
The “PRG” column on the nameplate on the right side of the drive identifies the software version. You can also use U1-25
[SoftwareNumber FLASH] to identify the software version.
When you use an external 24 V power supply, if you de-energize the main circuit power supply, the encoder
option will not operate, even when you connect the external 24 V power supply to terminals PS-AC. When you
use an encoder option, energize the drive main circuit power supply.
Note:
Yaskawa recommends that you use different external power supplies for the external power supply input terminals (PS-AC) and MFDI
selection common terminal (SC) / Input signal common terminal (SC).
Wiring MFDI Terminals
If you de-energize the main circuit power supply, the MFDI terminals will not operate, even when you connect the
external 24 V power supply to terminals PS-AC. When you set N.O. functions to H1-xx [MFDI Function Select],
MFDI terminals always deactivate. When you set N.C. functions, MFDI terminals always activate. Connect the
external 24 V power supply to the MFDI selection common terminal (SC).
A - External power supply
Figure 3.36 Wiring MFDI Terminals
Wiring Digital Input Option (DI-A3)
If you de-energize the main circuit power supply, the Digital Input Option terminals will not operate, even when
you connect the external 24 V power supply to terminals PS-AC. When you set N.O. functions to F3-xx [Terminal
Dx Function Selection], the input terminals on the digital input option always deactivate. When you set N.C.
functions, the input terminals on the digital input option always activate. Connect the external 24 V power supply
to the Input signal common terminal (SC).
A - External power supply
B - Photocoupler
C - Signal processor
Figure 3.37 Wiring Digital Input Option (DI-A3)
■ Serial Communication Terminals
Refer to Table 3.11 for a list of serial communication terminals and functions.