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Pelco Manual C501M-B (10/97) 4-15
4.3.8 Relay Output Connection
4.3.8.1 Relay Interface Connector Pin
Assignments
The pin-out number assignments and configurations
shown below match the 50-pin ribbon cables used in
the alarm/relay interface.
IMPORTANT: Please note that the pin
assignments on the 50-pin connector are not
standard.
25 NC 25
25 NO 26
25 Com 27
26 NC 28
26 NO 29
26 Com 30
27 NC 31
27 NO 32
27 Com 33
28 NC 34
28 NO 35
28 Com 36
29 NC 37
29 NO 38
29 Com 39
30 NC 40
30 NO 41
30 Com 42
31 NC 43
31 NO 44
31 Com 45
32 NC 46
32 NO 47
32 Com 48
Ground 49, 50
Relay No: Pin No:
Connector: Relays Out 1-16
Relay No: Pin No:
17 NC 1
17 NO 2
17 Com 3
18 NC 4
18 NO 5
18 Com 6
19 NC 7
19 NO 8
19 Com 9
20 NC 10
20 NO 11
20 Com 12
21 NC 13
21 NO 14
21 Com 15
22 NC 16
22 NO 17
22 Com 18
23 NC 19
23 NO 20
23 Com 21
24 NC 22
24 NO 23
24 Com 24
Relay No: Pin No:
9 NC 25
9 NO 26
9 Com 27
10 NC 28
10 NO 29
10 Com 30
11 NC 31
11 NO 32
11 Com 33
12 NC 34
12 NO 35
12 Com 36
13 NC 37
13 NO 38
13 Com 39
14 NC 40
14 NO 41
14 Com 42
15 NC 43
15 NO 44
15 Com 45
16 NC 46
16 NO 47
16 Com 48
Ground 49, 50
Relay No: Pin No:
1 NC 1
1 NO 2
1 Com 3
2 NC 4
2 NO 5
2 Com 6
3 NC 7
3 NO 8
3 Com 9
4 NC 10
4 NO 11
4 Com 12
5 NC 13
5 NO 14
5 Com 15
6 NC 16
6 NO 17
6 Com 18
7 NC 19
7 NO 20
7 Com 21
8 NC 22
8 NO 23
8 Com 24
Connector: Relays Out 17-32
50-Pin sub “D” connector (sockets)
Facing back of card cage.