YASKAWA GA800 Series, Maintenance & Troubleshooting, Page: 390 / 566

5.5 Control Circuit Wiring
390 YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
A - External power supply
B - Photocoupler C - Signal processor
Figure 5.49 Wiring Digital Input Option (DI-A3)
■
Serial Communication Terminals
Refer to Table 5.12 for a list of serial communication terminals and functions.
Table 5.12 Serial Communication Terminals
Type Terminal Terminal Name Function (Signal Level)
Modbus Communication
D+
Communication
input/output (+) MEMOBUS/Modbus communications
Use an RS-485 cable to connect the drive.
Note:
Set DIP switch S2 to ON to enable the
termination resistor in the last drive in a
MEMOBUS/Modbus network.
• RS-485
• MEMOBUS/Modbus communication protocol
• Maximum 115.2 kbps
D-
Communication
output (-)
AC Shield ground
0 V
◆
Control Circuit Terminal Configuration
The control circuit terminals are in the positions shown in Figure 5.50 .
A - Terminal block (TB5)
B - Terminal block (TB2-3)
C - Terminal block (TB2-2)
D - Terminal block (TB2-1) E - Terminal block (TB1)
F - Terminal block (TB3)
G - Terminal block (TB4)
Figure 5.50 Control Circuit Terminal Arrangement
The tightening torque for the terminal screws is shown on the reverse side or the lower front side of the front cover.