Impulse SCMD-MIDC User Manual
Scmd-miac/midc, Miniature digital input modules, Scmd
Isolated Digital I/O Products
SCMD
For information call 800-444-7644
120
SCMD-MIAC/MIDC
Miniature Digital Input Modules
Description
SCMD digital input modules provide highly reliable and safe interfaces to
harsh industrial measurement and control applications. With SCMD modules
installed near individual field signals, a reliable isolation barrier is provided
between the field wiring computer system. Other benefits include reduction of
field wiring costs and establishment of a cost effective and manageable method
for system expansion and repair.
The SCMD-MIAC digital input modules are used for sensing ON/OFF AC or
DC voltage levels in the ranges of 18-36, 90-140 and 180-280VAC or VDC
respectively. They are protected from damage due to high-voltage transients
on the input signal.
The SCMD-MIDC digital input modules provide DC voltage sensing at the lower
ranges of 3.3 to 32VDC and 10 to 60VDC.
High voltage, low voltage, fast switching, and low noise options are available,
designated by suffixes A, E, F, and N respectively.
Five backpanels are available for mounting SCMD-M digital input modules. See
Accessories section.
▲
Features
Plug into Backpanels for Miniature or
Full-Sized Modules
AC Inputs for 24V, 120V, 240V
DC Inputs for 3.3 to 32V, 10 to 60V
UL Listed, CSA Certified, CE Compliant
4kV Optical Isolation
Open-Collector Output
Industry-Standard Pinout and Footprint
Operating Temperature -30 to +80
°
C
Figure 2: SCMD-MIAC/MIDC Circuit Diagrams
Figure 1: SCMD-MIAC/MIDC Physical Dimensions
Ordering Information
Model
Input Range
Supply Voltage
SCMD-MIAC5
90 to 140VAC/DC
5V
SCMD-MIAC5A
180 to 280VAC/DC
5V
SCMD-MIAC5E
10 to 60VAC/DC
5V
SCMD-MIAC24
90 to 140VAC/DC
24V
SCMD-MIAC24A
180 to 280VAC/DC
24V
SCMD-MIDC5
3.3 to 32VDC
5V
SCMD-MIDC5F
3.3 to 32VDC
5V
SCMD-MIDC5N
10 to 60VDC
5V
SCMD-MIDC24
3.3 to 32VDC
24V
Digital Input Modules - Model No. Suffixes Identifying Optional Features
Suffix
Feature
A
High voltage versions (280VAC for AC modules).
E
Low voltage 10VAC input for AC modules.
F
Fast-switching version of DC modules.
N
Enhanced noise immunity version of DC modules.