GE Industrial Solutions 6KCV301DGF - Manual (Page 9)

9 —————— Digital General Function Card ——————
6KCV301DGF
configuration. When you use RS-485, the line terminator resistors are connected through
S23 and S24 jumpers and must be ON only on the line end device. The protocol used
is SLINK3, detail provided in separate manuals.
5
4
3
2
1
9
8
7
6
X3
0VS
+5VS
470R
470R
120R
S24
S23
100R
TXB/RXB
TXA/RXA
GND
+5V
Figure 1.2.2.1: RS-485 interface
Pin Signal Description
1
2
3
RXA/TXA (+) Positive differential I/O
4 GNDS
Connected with pin 8 GNDS with 110 ohm for
equipotential connection
5 GNDS 0V External power supply
6 +5V
Internal +5V . You need to join with pin 9 for internal
supply
7 RXB/TXB (-) Negative differential I/O
8 GND
Internal GND. You need to join with pin 5 for internal
supply
9 +5VS 5V External power supply Max 120 mA
d0010g
- Reserved
In this configuration you need to join pin 5 with pin 8 and pin 9 with pin 6 of X3
connector. DGF connectors are female connectors.
The configuration without signal isolation is possible only with short connections: for
example, with HIBS during the card configuration. On the drive, you need to use
signal isolation as described below.
Figure 1.2.2.2 shows a single-point connection between a PC or PLC RS-232 interface
and one 6KCV301DGF.
An adapter RS-232/485 is necessary to convert the PC RS-232 COM to an RS-485
signal. A simple two wire twisted cable is necessary to transmit the RS-485 differential
signals TXA/RXA - TXB/RXB.