SNAP High-Density Digital Module User’s Guide
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Chapter 1
1: Installation and Testing
INTRODUCTION
SNAP high-density digital modules from Opto 22 provide 16 or 32 points (channels) on one compact SNAP
input or output module.
These modules are ideal for OEMs and others who have
applications with high point counts, or for any application
requiring a large number of digital points on one SNAP I/O
rack.
Several high-density digital modules are available:
•
SNAP-IDC-32
and
SNAP-IDC-32-FM
digital input
modules, with 32 input points, can be used to sense
on/off status for 10–32 VDC inputs from sources such
as proximity switches, limit switches, push buttons, and
pilot switches (PNP or sourcing type).
•
The
SNAP-IDC-32N
is similar, but its input range is -10
to -32 VDC and its common connections are positive
rather than negative, making it ideal for NPN or sinking
type inputs.
•
The
SNAP-IDC-32D
has an input range of 2.5 to 12
VDC.
•
The
SNAP-IDC-32DN
offers a -2.5 to -12 VDC input
range and has positive common connections, also
suited to NPN (sinking) inputs.
•
The
SNAP-IDC-16
digital input module offers 16 points
with channel-to-channel isolation. It can sense on/off
status for 10–32 VDC/VAC loads.
•
The
SNAP-IDC-HT-16
leakage tolerant digital input
module is used with proximity switches. It offers
channel-to-channel isolation for 16 points and senses
on/off status for loads of 15–28 VDC/VAC.
•
SNAP-IAC-16
,
SNAP-IAC-A-16
, and
SNAP-IAC-K-16
digital input modules each have 16 points with
channel-to-channel isolation. These modules sense
on/off status for 90–140 VAC (SNAP-IAC-16), 180–280
VAC (SNAP-IAC-A-16), or 70–130 VAC (SNAP-IAC-K-16).
SNAP-IDC-16
SNAP-ODC-32-SNK
