4690 S e rie s
Turbidity systems
4 Electrical Connections
14
IM/4690–EN Rev. A
4.3 Connections
4.3.1 Wall- / Pipe-mount Analyzer Connections
Mounting
Terminal Number
Wall
1
2
3
4
5
6
7
Panel
12
11
10
9
8
7
6
Cleaner
initiate pulse
+12 V
Switched emitter
supply
+12 V
Cleaner / Receiver
supply
Signal input
Cleaner
detect signal
0 V
common
Link
Table 4.1 Analyzer Input Connections
Note.
Refer to Fig. 4.1, page 12 for access to terminals.
Slacken terminal screws fully before making connections.
Fig. 4.4 Wall- / Pipe-mount Analyzer Connections
Note.
1. A second retransmission output is available if the RS485 serial communications facility is not used.
2. If
Test Cleaner
is set to
YES
(see page 28), Relay 2 becomes 'Failed Wiper Alarm' relay.
Turbidity Sensor
7998 Series
(see also Table 4.1)
Serial
RS485
Retransmission
Output
Relay 1
Relay 2
Power Supply
– see
Warning
on page 13
Earth (Ground) Stud
Earth (Ground)
Stud on Case
Earth (Ground)
Stud on Case
1 – White
2 – Yellow
3 – Red
4 – Green
5 – Black
6 –
Blue
7 –
Braid
Serial
Retrans.
Relay 1
Relay 2
Power
Supply
1 –
2 – Rx+
3 – Rx–
4 – Tx+
5 – Tx–
6 – 0V
(Optional)
Retrans.
Output
2
nd
Retrans.
Output
– see
Note 1
.
Relay 1
Relay 2
– see
Note 2
.
N – Neutral
L – Line
– Earth
1 – NC
2 – C
3 – NO
4 – NC
5 – C
6 – NO