Hardware reference guide

I/O Modules
35013379 02 October 2007 611
140DDI35300 Quantum I/O DC Input 24 Vdc 4x8 Sink Module
Overview The DC Input 24 Vdc 4x8 Sink module accepts 24 Vdc inputs and is for use with
shared input common wired to positive potential.
Specifications The following table shows the specifications for the DDI35300 24 VDC IN module.
Specifications
Number of Input Points 32 in four 8 point groups
LEDs Active
1 ... 32 (Green) - Indicates point status
Required Addressing 2 words in
Operating Voltages and Currents
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
Response
OFF - ON 1 ms (max)
ON - OFF 1 ms (max)
Internal Resistance 2.5 k
Input Protection Resistor limited
Isolation
Group to Group 500 Vac rms for 1 minute
Group to Bus 1780 Vac rms for 1 minute
Fault Detection None
Bus Current Required 330 mA
Power Dissipation 1.7 W + 0.36 W x the number of points on
External Power Not required for this module
Fusing
Internal None
External User discretion
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com