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Figure 14 Control wiring, Programmable Relay Board
J74
1.
Customer control wiring connection points are terminals 1 through 15. (Pin 16 not used on J71, J72, and
J73.)
2.
Programmable Relay Board option includes eight signal channels with two Form-C dry contacts per
channel (see Table 6).
3.
All control wiring (by others) must be run separate from power wiring.
4.
Contact ratings: 1A @ 30VDC or 125VAC @ 0.45A
5.
Maximum cable length 500 ft. (152m) with #16AWG and flexible stranded cable.
6.
All wiring must be in accordance with national and local electrical codes.
Table 6
Programmable Relay Board pinout
Terminal
Block
Channel
CH1
J71
CH2
CH3
CH4
J72
CH5
CH6
J73
CH7
CH8
J74
Note: Pin 16 not used on J71, J72, and J73.
1 2 3
1 2 3
1 2 3
1 2 3
Pin No.
Common
A
1-3
1
B
4-6
4
A
7-9
7
B
10-12
10
A
13-15
13
B
1-3
1
A
4-6
4
B
7-9
7
A
10-12
10
B
13-15
13
A
1-3
1
B
4-6
4
A
7-9
7
B
10-12
10
A
13-15
13
B
1-3
1
4
5
6 7 8 9
10
11 12 13 14 15 16
4
5
6 7 8 9
10
11 12 13 14 15 16
4
5
6 7 8 9
10
111213141516
Normally
Normally
Closed
Open
2
3
5
6
8
9
11
12
14
15
2
3
5
6
8
9
11
12
14
15
2
3
5
6
8
9
11
12
14
15
2
3
23
Installation Drawings
J71
J72
J73
Liebert
®
™
eXL
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