Omega Vehicle Security OMP-MODL - Manual (Page 57)

3... I NTERFACE M ODULES
U SING THE OMP-MODL 3-33
implementation of a Counter channel within a Program Net and is covered in the
Master Icon Listing, Appendix A.
Channel input impedance is greater than 30K ohm.
A 40mS debounce circuit can be enabled via software which can be used to filter out
`contact bounce’ (see below).
Event / Counter Input Signal Connections:
To utilize an MLIM-2 channel as an Event or Counter input, connect the
input signal positive lead to an Input terminal (Chan A, B, C, or D) and the
negative lead to one of the four Common terminals on the module terminal
strip (Figure 3... -20). Note that all of the four Common terminals are
interconnected and connect directly to the OMP-MODL circuit ground. Refer
to Chapter 7 for steps to generate a Terminal Strip Wiring printout for use in
making field wiring connections.
12
VDC
Lamp
TTL or CMOS
Isolation from Relay contact closure
Contact Closure
15VDC Max
Channel A Channel B Channel C Channel D Common Common
ML058
Contact Closure Application
Powered Signal Application
1 2 3 4 5 6 7
Figure 3... -20: Contact closure and Powered type Event or Counter signal input
connections