5-22 Control Wiring
MN766
5.9 Communication Expansion Boards
The communication and feedback module slots are shown in Figure 5-24. All option boards are designed as plug-in
modules.
Figure 5-23 Expansion Board Location
Feedback
Module Slot 3
I/O Module Slot 1
I/O Module
Slot 2
Control
Board
RS485
JP3
View From Rear (Opposite J1 Connector)
Keypad
Connector
Ribbon Cable
Regen
Board
Connector
J1
J2
J3
See recommended tightening torques in Table A-2.
5.9.1 RS485 Modbus
The serial communications port on the control board supports RS485 communications, Figure 5-24. The baud rate and node
addresses are selectable from the Keypad. Jumper JP3 (Figure 5-24) on the control board sets termination. As shown (pins 2
and 3 jumpered) no terminating resistor is used. Setting the jumper to pins 1 and 2 selects the 120 ohm terminating resistor
for the RS485 cable. The RS485 connections are described in Table 5-15. Refer to Baldor manual MN744 for connection
and software information. Note that the hardware specifi cations for this port follow the RS485 standard.
Table 5-14 RS485 Multi-Drop Port Connections
S
B
A
S
G
Pin
Signal Name
Description
1
SCR
Screen termination, connected to chassis on the control board
2
B
Data Return
3
A
Data In
4
GND
Power Supply Return
5
SCR
Screen termination, connected to chassis on the control board
Summary of Contents for VS1SD
Page 1: ...05 13 Installation Operating Manual MN766 VS1SD AC Servo Control...
Page 12: ...2 2 General Information MN766...
Page 16: ...3 4 Installing the Drive MN766...
Page 108: ...7 34 Parameter Descriptions MN766...
Page 114: ...8 6 Customizing Your Application MN766...
Page 128: ...9 14 Troubleshooting MN766...
Page 154: ...12 12 Monitor and RTC Description MN766...