Rockwell Automation 1771-OBD Series C INSTL INSTR DC(10-60V) OUTPUT - Manual (Page 4)

4 dc (10…60V) Output Module
Publication 1771-IN054C-EN-P - November 2006
Before You Begin
Before you begin, make sure that the following decisions are made.
Determining Module Placement in the I/O Chassis
You can place your module in any I/O module slot of the I/O chassis, except for the extreme
left slot. This slot is reserved for programmable controllers or adapters.
Group your module to minimize adverse effects from radiated electrical noise and heat. We
recommend the following:
• Group analog input and low voltage dc modules away from ac modules or high voltage dc
modules to minimize electrical noise.
• Do not place this module in the same module I/O group with a digital high-density I/O
module when using two-slot addressing. This module uses a byte in both the input and
output image tables for block transfer.
Important Preinstallation Considerations
The 1771-OBD series C module is compatible with all 1771 universal I/O chassis except
1771-A1, 1771-A2, and 1771-A4. Make sure no other output module or single-slot block
transfer module is placed in the same module group when using two-slot addressing.
Calculate Power Requirements
Your module receives its power through the 1771 I/O chassis backplane from the chassis
power supply. The module requires 400 mA from the output of this supply. To calculate the
requirements for the backplane power supply, add 400 mA to the power requirements of all
other modules in the I/O chassis. Calculating the requirements will prevent an overload to the
chassis backplane and/or backplane power supply.