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5.2 Electrical Installation
Refer to the Template Applications table and Output Sources table on the rear fold-out to determine the
input and output connections to be made.
Warning. Before making any connections, ensure that the power supply, any powered control circuits
and high common mode voltages are switched off.
Note.
•
Always route signal leads and power cables separately, preferably in grounded metal conduit.
•
It is strongly recommended that screened cable is used for signal inputs and relay connections. Connect
the screen to the ground stud – see Fig. 5.7.
Information. Use cable appropriate for the load currents. The terminals accept cables up to 14AWG
2
(2.5mm
).
5.2.1 Electrical Connections – Figs 5.7 to 5.9
Analog
See
Input 3
Fig 5.8
(I/P3)
Transmitter PSU
Digital / Analog Output 2
(ao2 /do2)
Digital Input Common
Digital Input 3 (di3)
Digital Input 4 (di4)
Relay 3 (RLY3)
Relay 4 (RLY4)
RS485 Tx
RS485 Tx/Rx
RS485 Common
Only available if option board fitted
Caution. The Power Supply ground cable must be connected to the
Ground Stud and NOT to terminal 18.
–
19
+
20
RTD2
21
+
22
+
23
–
24
–
25
+
26
+
27
NO/NC
28
C
29
NO/NC
30
C
31
+
32
–
33
+
34
–
35
36
C
Fig. 5.7 Electrical Connections – General
1
–
2
+
3
RTD1
4
Analog Input 2
–
5
(I/P2)
+
6
+
Transmitter PSU
7
+
Digital / Analog Output 1 ( ao1/do1)
8
–
9
–
Digital Input Common
10
+
Digital Input 1 (di1)
11
+
Digital Input 2 (di2)
NO/NC
12
C
13
NO/NC
14
C
15
16
+
Live (1A fuse)
17
–
Neutral
18
Earth
Ground Stud
5 INSTALLATION...
Analog Input 1
(I/P1)
See
Fig. 5.8
Relay 2 (RLY2)
Relay 1 (RLY1)
+Vs (+)
85 to
0V (–)
265V
a.c.
Earth
24V
d.c.
85
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