6.5
Alarm and Control Relay Connections
The NetGuardian's discrete alarm inputs, control relay outputs, and analog alarm inputs are connected through the
50-pin connectors labeled "Discretes 1–16, Analogs 1-4, and Relays 1-2" on the back panel.
6.5.1 Alarm and Control Relay Connector Pinout Table
Alarm, amphenol connector, and control relay pinout (continued on next page)
The table shows the pinouts for the 50-pin connectors "Discretes 1-16," and "Analogs 1-4" and "Control Relays 1-2."
Alarm and control relay connectors
Discretes 1–16
RTN
ALM
ALM 1
1
26
ALM 2
2
27
ALM 3
3
28
ALM 4
4
29
ALM 5
5
30
ALM 6
6
31
ALM 7
7
32
ALM 8
8
33
Analogs 1–4
ANA 1
ANA 2
ANA 3
ANA 4
GND
Control Relatys 1–2
NO/NC
CTRL 1
17/42
CTRL 2
19/44
FUSE
20/NA
Alarm, amphenol connector, and control relay pinout
RTN
ALM
ALM 9
9
34
ALM 10
10
35
ALM 11
11
36
ALM 12
12
37
ALM 13
13
38
ALM 14
14
39
ALM 15
15
40
ALM 16
16
41
+
–
21
46
22
47
23
48
24
49
25
50
CO
43
18
45
11
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