Allen-Bradley 1771-OBD

The Allen-Bradley 1771-OBD is a 10-30V DC output module, 16 outputs. 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.

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.

You can use a dc (10...60V) output module (771-OBD series C) to directly drive terminals on the following modules:
- dc (5...30V) input module (1771-IQ)
- dc (10...30V) input module (1771-IBD, 1771-IBN)
- dc (20...60V) input module (1771-ICD)
- dc (12...24V) input module (1771-IB)
- dc (24V) input module (1771-IQ16)
- dc (48V) input module (1771-IC)


Outputs per module 16 nonisolated
Module location 1771-A1B through 1771-A4B I/O chassis (Do not use this module with 1771-A4 I/O chassis)
User supply voltage 10...60V dc
Voltage, on-state output, nom 48V dc
Current rating (see Derating Curve) 2 A per output resistive, not to exceed 8 A per module