Hardware reference guide

I/O Modules
35013379 02 October 2007 727
140DDM39000 I/O DC Input 24 Vdc 2x8 Sink/DC Output 24 Vdc 2x4 Source
Module
Overview The DC Input 24 Vdc 2x8 Sink / DC Output 24 Vdc 2x4 Source module accepts and
switches 24 Vdc inputs/outputs and is for use with sink input and source output
devices.
Topology The following table shows the topology for the DDM39000 module.
Input
Specifications
The following table shows input specifications for the DDM39000 module.s
Topology
Number of Input Points 16 in two 8 point groups
Number of Output Points 8 in two 4 point groups
LEDs Active
F (red) - No power applied to the group(s) or
blown fuse
1 ... 16 (Green - right two columns) -
Indicates input status
1 ... 8 (Green - left column) - Indicates output
status
Required Addressing 1 Word In
0.5 Word Out
Input Specifications
Operating Voltages and Currents (Input)
ON (voltage) +15 ... +30 Vdc
OFF (voltage) -3 ... +5 Vdc
ON (current) 2.0 mA min
OFF (current) 0.5 mA max
Absolute Maximum Input
Continuous 30 Vdc
1.3 ms 56 Vdc decaying pulse
Internal Resistance (Input) 2.5 kΩ
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com