System Wiring Schematic; Wall-Mounted Instrument Connections - ABB 9438 User Manual

...3 ELECTRICAL CONNECTIONS
3.2.2 System Wiring Schematic – Fig. 3.4
The wiring of a single solenoid/sensor system from a user-
supplied 24 V DC supply is shown in Fig. 3.4.
If the 9438 080 power supply unit is employed, refer to
Appendix A for wiring details.
3.3 Wall-mounted Instrument Connections – Fig. 3.5
Note. Refer to Fig. 3.1 for access to terminals.
1 2 3 4
Channel 1
Channel 1
D.O. Sensor Temperature Compensator
1 – +ve (Red)
3 – –ve (Black)
Braid
Earth Stud (on case)
– see Fig. 3.1
Warning. The power supply earth (ground) must be connected to ensure safety to personnel, reduction of the effects of
RFI and correct operation of the power supply interference filter.
8
1 2 3
5 6 7
4 5 6
Channel 2
Serial
(If fitted)
Channel 2
Serial
PT1000 RS422/
RS485
5 – White
1 –
6 – Green 2 – Rx+
Link 3 – Rx–
7 –
4 – Tx+
5 – Tx–
6 – 0V
Retrans 2 Output (if fitted)
4 –
5 –
Fig. 3.5 Wall-mounted Instrument Connections
+ve
Customer 24 V DC supply
–ve
Solenoid valve powered from
user supplied 24 V DC source
Fig. 3.4 Wiring Schematic
(see Appendix A for wiring using optional PSU)
Caution. Slacken terminal screws fully before making
connections.
1 2
+ –
4
Retrans.
Relay 1
Relay 2
Retransmission
Output
+
Retrans.
Output
NC
-ve
+ve
C
NO
9438 Transmitter
Relay 2
C NO
Solenoid Valve
3
N L
5 6
Power
Supply
Power
Relay 1
Supply
Relay 2
Mains Supply
Relays
N
1 – NC
L
2 – C Relay 1
3 – NO
Solenoid
5 – C
valve
6 – NO
Calibration
Relay
Earth Stud (on case) –
see Fig. 3.1
=
Normally Closed
Common
=
Normally Open
– Neutral
– Line
– Earth