Campbell CS135, User Manual

Page: 21 / 70

User Guide
13
Table 4.1 Function of the connector pins
Mains Connector
Pin Function Colour of supplied cable
cores
1 Live Brown
2 Not connected NA
3 Neutral Blue
4 Earth Green/yellow
Blower/Heater Connector
Pin Function Colour of supplied cable
cores
1 Neutral Black (1)
2 Fan + Black (2)
3 Therm Black (3)
4 Therm (0V) Black (4)
5 Switched 230/115 AC
Live
Black (5)
6 Fan on Black (6)
E Earth Green/yellow
Communications Connector
Pin Colour of
supplied
cable
cores
9-PIN `D’
Connector
(fig 4.4)
RS232 RS485
Half
duplex
RS485 Full duplex/
RS422
1 Red 8 CTS* Y Y/T
x
non-inverting
2 Yellow 7 RTS* B/R
x
non-inverting
3 Green 5 Gnd
4 Black Gnd Gnd
5 White 2 Tx Z Z/T
x
inverting
6 Blue 3 Rx A/R
x
non-inverting
E Screen
*If hardware handshaking is not used pins 7 and 8 should be connected together.
4.5.2 Wiring Using Supplied Campbell Scientific Cables
Two cables are supplied, each 10m long. One is for the mains power supply, the
other is for communications.
If the power cable is incorrectly wired then irrevocable
damage can be done to the unit and there is risk of
serious injury or death.
WARNING