34
…4
INSTALLATION
Fig. 4.7 Electrical Connections
Standard Analog
I/P Connector
(Section 4.5)
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
TB1
Analog I/P A1
Analog I/P A2
Analog I/P A3
Analog I/P A4
Analog I/P A5
Analog I/P A6
+
–
3
rd
lead RTD
+
–
3
rd
lead RTD
+
–
3
rd
lead RTD
+
–
3
rd
lead RTD
+
–
3
rd
lead RTD
+
–
3
rd
lead RTD
Logic I/P
0V
L
N
E
+24V
0V
A.C.
Line
Neutral
Earth
+
–
D.C.
+ve
–ve
Earth
2-wire
Transmitter
D.C. Power
Power Supply
(Section 4.5)
1
2
3
4
5
6
7
8
9
10
Relay O/P
(Section 4.5)
NC
NO
C
NC
NO
C
NC
NO
C
Relay 1
Relay 2
Relay 3
Instrument viewed from rear
AUX
PWR
TB1
TB2
A 1
A 2
A 3
A 4
A 5
A 6
A 7
A 8
A 9
A 10
A 11
A 12
A 13
A 14
A 15
A 16
A 17
A 18
A 19
A 20
C 1
C 2
C 3
C 4
C 5
C 6
C 7
C 8
C 9
C 10
B 1
B 2
B 3
B 4
B 5
B 6
B 7
B 8
B 9
B 10
H 1
H 2
H 3
H 4
H 5
H 6
H 7
H 8
1
2
3
4
5
6
7
8
DA1 – Negative polarity digital input
4.4
Electrical Connections – Fig. 4.7
The terminals accept cables up to 2.5mm
2
cross section.
Note.
For the combination of this apparatus with other apparatus and/or for its connection to installations, the following notes apply:
•
Always route signal leads and power cables separately, preferably in earthed metal conduit.
•
It is strongly recommended that screened cable is used for signal inputs and relay connections, with the screen connected
to the earth stud.