1756-OB32 | Allen-Bradley | 24VDC 32-Channel Sourcing I/O
Manufacturer: Allen Bradley
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Part Number: 1756-0B32
Condition：New with Original Package
Product Type: 32-Channel Sourcing I/O
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1756-OB32 Series A ControlLogix 32-Point DC Output Module
Product Overview
The Allen-Bradley 1756-OB32 is a high-density digital output module designed for the ControlLogix® platform, providing 32 sourcing outputs in a single-slot form factor. This module is engineered to interface PLC logic with a high volume of field devices such as interposing relays, solenoids, indicator lamps, and small actuators.
By offering 32 points per module, the 1756-OB32 significantly reduces the required rack space and overall system cost for high-I/O count applications. It operates on a 12/24V DC nominal voltage and features integrated electronic protection. The module supports multiple communication formats, including direct-connect and rack-optimized paths, ensuring seamless integration into localized or distributed ControlLogix architectures.
Technical Specifications
Detailed hardware parameters and performance ratings for the 1756-OB32:
| Parameter | Specification Details |
| Model Number | 1756-OB32 |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | High-Density DC Digital Output Module |
| Number of Outputs | 32 Channels (Sourcing) |
| Operating Voltage Range | 10 VDC to 31.2 VDC |
| Current per Point | 0.5 A @ 50 °C; 0.35 A @ 60 °C (Linear derating) |
| Current per Module | 16 A @ 50 °C; 10 A @ 60 °C |
| Backplane Current (5.1V) | 300 mA |
| Backplane Current (24V) | 2.0 mA |
| Output Delay Time (OFF to ON) | 60 µs nominal / 1 ms maximum |
| Output Delay Time (ON to OFF) | 200 µs nominal / 1 ms maximum |
| Power Dissipation (Max) | 4.8 Watts @ 60 °C |
| Isolation Voltage | 50V Continuous (Group-to-Backplane) |
| Compatible RTB | 1756-TBCH, 1756-TBS6H (36-Pin) |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |