Prothermo NMT81
Electrical connection
Hauser
39
6.4
NMS5 (Ex d [ia]) intrinsically safe connection
The intrinsically safe NMT81 must be connected to the intrinsically safe HART terminal on
NMS5.
L
N
G
L
N
G
1
ARS
2
ARS
ARS
3
a
4
5
6
7
8
9
+
-
+
-
+
-
b
c
d
+
-
+
-
+
-
10
11
12
13
14
15
d
d
d
16
17
18
19
20
21
COM
HOIST
STOP
+
-
e
f
+
-
+
-
22
23
24
25
26
g
h
i
A0038529
35
NMS5 terminal
a
Power supply
b
Non-intrinsically safe HART communication: NRF, etc.
c
Digital output Modbus, RS485 serial pulse or HART
d
Alarm contact point
e
Operation contact point input
f
4 to 20 mA channel 1
g
4 to 20 mA channel 2
h
Intrinsically safe HART
i
From NMT81 Ex ia
Do not connect NMT81 HART communication cable to terminals 4 and 5 on NMS5/
NMS7. These terminals are designed to connect to Ex d HART communication.
Summary of Contents for Prothermo NMT81
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