24 Volts DC - One output per connector. Internally sourced, this will allow up to 60mA to be shared
over all general purpose inputs.
PIN Option A Function
1 Chassis Ground
2 General Purpose Input 1
3 General Purpose Input 2
4 Isolated Ground
5 General Purpose Input 3
6 General Purpose Input 4
7 Isolated Ground
8 General Purpose Input 5
9 General Purpose Input 6
10 Isolated Ground
11 General Purpose Input 7
12 General Purpose Input 8
13 Isolated Ground
14 24V DC (60mA total across both Option A and B pins)
Connections and Input
Types External Connections Both Chassis Ground (
16 connectors.
By default, all input circuits are isolated with respect to the LSI-16 ground. Any external input connections
must be logic referenced to the Isolated Ground. This configuration allows external equipment to be
interconnected to the LSI-16 without ground current interaction between devices.
The IM-16 ground appears on a single terminal (Pin 1) on each of the two connector banks ('Option A'
and 'Option B'). This should only be used if circuit isolation is not required and should only be connected
to the cable screen.
The two isolated grounds of the IM-16 board are connected internally. For ease of wiring each connector,
every Control Input pair has an Isolated Ground connection adjacent to it.
Types of Input Circuit
The logic level of each input on the IM-16 may be independently determined in the Vocia software to
operate one of four ways. These are;
Option B Function
Chassis Ground
General Purpose Input 9
General Purpose Input 10
Isolated Ground
General Purpose Input 11
General Purpose Input 12
Isolated Ground
General Purpose Input 13
General Purpose Input 14
Isolated Ground
General Purpose Input 15
General Purpose Input 16
Isolated Ground
24V DC (60mA total across both Option A and B pins)
) and Isolated Ground ( ) are available on the IM-