Hardware reference guide

I/O Modules
35013379 02 October 2007 729
Common
Specifications
The following table shows the common specifications for the DDM39000 module.
Common Specifications
Response (Input and Output)
OFF - ON 1 ms (max) - (resistive load output)
ON - OFF 1 ms (max) - (resistive load output)
Module Protection
Input Protection Resistor limited
Output Protection Transient voltage suppression (internal)
Isolation (Input and Output)
Group to Group 500 Vac rms for 1 minute
Group to Bus 1780 Vac rms for 1 minute
Fault Detection
Input None
Output Blown fuse detect, loss of field power
Bus Current Required (Module) 330 mA
Power Dissipation 1.75 W + 0.36 x input points on + 1.1 V x total
outputs load currents
External Power (Module) Not required for this module
Fusing
Input Internal – None
External – User discretion
Output Internal - 5 A fuse for each group
(Part # 043502405 or equivalent). For the
location of the fuses, (see Fuse Locations,
p. 730).
External - Each group is protected with a 5 A
fuse to protect the module from catastrophic
failure. The group fuse is not guaranteed to
protect each output for all possible overload
conditions. It is recommended that each
point be fused with a 1.25 A fuse, Part #
043508930 (Littlefuse 3121.25, 1.25 A, 250
V).
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com