1791-24BR

The Allen-Bradley 1791-24BR is a block I/O module. This relay output module can support 24 input modules, with 3 groups of 8 inputs. Its on-state voltage range is from 10-30 Volts DC and off-state voltage is a maximum of 5 Volts DC. The on-state current is a minimum of 2.5 milliamps at 10 Volts DC and a maximum of 11 milliamps at 30 Volts DC and off-state current is a minimum of 1.5 Amps. The external power of this module is 19.2-30 Volts DC for the voltage and 300 milliamps for the current. The maximum power dissipation is 14.5 Watts and the maximum thermal dissipation is 49.4 BTU/hour. It has an isolation of 500 Volts AC for the power supply to remote I/O, I/O group-to-group, and I/O group-to-logic. The module has an operating temperature of 0-60 degrees Celsius, a storage temperature of 40-85 degrees Celsius, and a non-condensing relative humidity of 5-95%.

The entire 1791-24BR module measures 6.95 x 4.35 x 3.85 inches. These modules are small and self-sustained remote I/O devices, having their own input/output connections, programmable controller interface, signal conditioning circuitry, and power supplies. Compatible controllers are PLC-2, PLC-3, PLC-5/250 and PLC-5 family programmable controllers and SLC 5/02 modular controllers. Its status indicators allow you to monitor communication and input/output states. Terminal strips on the left and right sides are for remote I/O link, input/output connections, and power. The module's two switch assemblies let you configure the I/O rack number, communication rate, starting I/O group, last state, and the last chassis.