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1791-IOBW Allen-Bradley
Original price
$375.00
-
Original price
$2,205.00
Original price
$375.00
$375.00
-
$2,205.00
Current price
$375.00
Trusted By
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The Allen-Bradley 1791-IOBW is a 1791 series Block I/O module serving as a Remote I/O interface for legacy PLC systems. Part number 1791-IOBW incorporates sinking DC inputs and sourcing DC outputs, along with integrated power, communications interface for RIO bus topology, and signal conditioning. It is typically deployed in industrial distributed I/O architectures supporting platforms such as PLC-2, PLC-3, PLC-5, and SLC-500 with RIO scanners. The module accommodates up to 32 inputs and 32 outputs and is employed in factory automation, retrofits, and remote I/O configurations.
Best Suited For
- Remote I/O expansion on legacy PLC or SLC-500 platforms
- Applications requiring combined input/output block modules
- Distributed I/O installations using Belden 9463 RIO cabling
- Environments needing integrated power supply and interface in one module
Inputs / Outputs
32 sinking inputs / 32 sourcing outputs
External power
18-26.4 V DC, 100 mA @ 24 V typical, 2.0 A inrush 10 ms
Power dissipation
15.1 W maximum; 7.6 W typical
Operating temperature
0 to 60 °C (32 to 140 °F)
Dimensions (W×H×D)
156.21 × 178.0 × 43.7 mm (6.15 × 7.0 × 1.72 in)
Technical Specifications
I/O & Electrical
Number of inputs
32 (2 groups of 16)
Input type
Sinking
On-state voltage range
12.0 to 26.4 V DC
Minimum on-state input current
1.56 mA; 5.2 mA @ 24 V typical
Maximum off-state voltage
7.0 V DC
Maximum off-state current
1.0 mA DC
Input impedance (nominal)
4.6 kΩ
Number of outputs
32 (2 groups of 16)
Output type
Sourcing
Maximum output voltage range
18.0 to 26.4 V DC @ 300 mA resistive
Maximum on-state current
300 mA per point
Output current per group
2.4 A maximum continuous
Maximum on-state voltage drop
1.5 V DC @ 25 °C
Maximum off-state leakage current
0.5 mA
Maximum surge current
1.0 A for 25 ms, 1 pulse per second
On-state current (typical inputs)
5.2 mA @ 24 V DC
Turn-on time (inputs)
10 ms (±4 ms)
Turn-off time (inputs)
10 ms (±4 ms)
Turn-on time (outputs)
2.0 ms
Turn-off time (outputs)
2.0 ms
Communication & Power
External power
18 to 26.4 V DC, 100 mA @ 24 V DC; inrush 2.0 A for 10 ms
Remote I/O isolation
850 V DC (transformer) for 1 second
Input to system isolation
1500 V AC (opto) for 1 second
Group-to-group isolation (input)
1500 V AC (air gap) for 1 second
Output to system isolation
1500 V AC (opto) for 1 second
Group-to-group isolation (output)
1500 V AC (air gap) for 1 second
RIO cable lengths
57.6 K baud → 10,000 ft; 115.2 K → 5,000 ft; 230.4 K → 2,500 ft
Physical & Environmental
Dimensions
156.21 mm W × 178.0 mm H × 43.7 mm D (6.15 × 7.0 × 1.72 in)
Conductors
14 AWG (2 mm²) stranded max; 3/64 in (1.2 mm) insulation max
Cable type
Belden 9463 (RIO)
Power dissipation
15.1 W maximum; 7.6 W typical
Thermal dissipation
51.8 BTU/hr maximum; 25.9 BTU/hr typical
Operating temperature
0 to 60 °C (32 to 140 °F)
Storage temperature
-40 to 85 °C (-40 to 185 °F)
Relative humidity
5 to 95 % non-condensing
