April 2, 2004 • Alcorn McBride MP3 Audio Machine User’s Manual • Rev H •
Page 15
Voltage inputs, such as from a PLC, could be wired this way:
24 Volt Output 8
Ground Reference
24 Volt Output 4
24 Volt Output 2
24 Volt Output 1
PLC
Voltage
Contacts
I/O CONNECTOR
CONNECTOR DB37
19
37
18
36
17
35
16
34
15
33
14
32
13
31
12
30
11
29
10
28
9
27
8
26
7
25
6
24
5
23
4
22
3
21
2
20
1
Switch set
to voltage
Diodes are not needed, since the PLC can actuate any combination of lines desired.
Parallel Outputs
Two status outputs are provided. They are dry contact closures rated at 24 VDC and
0.9 amp max. Their function is described below.
Function
Pins
Description
Playing
9,28
Closed when the unit is playing.
Fault
10,29
Closed when the unit detects a fault
condition.
