ABB AC 31 Technical Manual page 125

Page 5-16
Programming
PLC
*
Generally V- is connected to GND of
power supply
RTS with 40 serie:
RTS +
*
RTS – is not connected
RTS with 50 serie:
1) Active on high level:
Power supply (
I max = 2mA
V+
PLC
4,7 K Ω
RTS+
5
RTS-
8
47 K Ω
V-
2) Active on low level:
Power supply (
I max = 2mA
V+
R1
PLC
4 7 K Ω
RTS+
5
RTS-
8
o
TX
o
RX
o
GND
o
RTS +
o
RTS -
General cabling between PLC / Modem
+ 10 V (stand-by level)
Active on low level – 10
V+/V-
max = 30V )
(white colour)
(blue colour)
Modem
RTS signal
V+/V-
max = 30V )
(white colour)
RTS signal
Modem
V - + (V + * 4,7/(R1 +4 ,7))
(blue colour)
V-
o
TX MODEM
o
RX
o
GND
o
Input Modem
o
V + Power
Supply
o
V –
TX signal
0,9 * V +
V -
Frame sent
Delay
TX signal
V +
Frame sent
Delay
ABB Control - AC 31
1SBC 260400 R1001-b 06.99