Product Description
Product Details: Allen-Bradley 1756-OB32 DC Digital I/O Module
| Manufacturer | Model/Part Number | Description |
|---|---|---|
| Allen-Bradley | 1756-OB32 | DC Digital I/O Module |
Technical Specifications
| Attribute | 1756-OB32 / 1756-OB32K | 1756-OB32XT |
|---|---|---|
| Outputs | 32 (16 points/group) | 32 (16 points/group) |
| Voltage Category | 12/24V DC source | 12/24V DC source |
| Operating Voltage Range | 10…31.2V DC | 10…31.2V DC |
| Output Delay Time | Off to On: 60 µs nom/1 ms max On to Off: 200 µs nom/1 ms max | Same |
| Current Draw @ 5.1V | 300 mA | 300 mA |
| Current Draw @ 24V | 2 mA | 2 mA |
| Total Backplane Power | 1.58 W | 1.58 W |
| Power Dissipation (max) | 4.8 W @ 60°C (140°F) | 4.8 W @ 60°C (140°F) |
| Thermal Dissipation | 16.37 BTU/hr | 16.37 BTU/hr |
| Off-state Leakage Current (max per point) | 0.5 mA | 0.5 mA |
| On-state Voltage Drop (max) | 200 mV DC @ 0.5 A | 200 mV DC @ 0.5 A |
| Current per Point (max) | 0.5 A @ 50°C (122°F), 0.35 A @ 60°C (140°F) | Same |
| Current per Module (max) | 16 A @ 50°C (122°F), 10 A @ 60°C (140°F) | Same |
| Surge Current per Point (max) | 1 A for 10 ms, repeatable every 2s @ 60°C (140°F) | Same |
| Load Current (min) | 3 mA per point | 3 mA per point |
| Scheduled Outputs | Synchronization within 16.7 µs max, reference to Coordinated System Time | Same |
| Fault Mode States per Point | Hold last state, On or Off (default Off) | Same |
| Program Mode States per Point | Hold last state, On or Off (default Off) | Same |
| Isolation Voltage | 250V continuous (outputs to backplane) / 125V continuous (outputs group-to-group) | Same |
| Module Keying | Electronic, software configurable | Same |
| Fusing | Not protected (fused IFM optional) | Same |
| Removable Terminal Block (RTB) | 1756-TBCH, 1756-TBS6H | 1756-TBCHXT, 1756-TBS6HXT |
| RTB Keying | User-defined mechanical | Same |
| Slot Width | 1 | 1 |
| Wire Category | Category 1 | Category 1 |
| Wire Size | 22–14 AWG (single), 22–16 AWG (double) | Same |
| Terminal Block Torque | 0.5 N•m (4.4 lb•in) | Same |
| Enclosure Type | None (open-style) | None (open-style) |
| Temperature Code | T4 | T4 |
Environmental Specifications
| Attribute | 1756-OB32 / 1756-OB32K | 1756-OB32XT |
|---|---|---|
| Operating Temperature | 0…60°C (32…140°F) | 0…60°C (32…140°F) |
| Non-operating Temperature | -40…+85°C (-40…+185°F) | -40…+85°C (-40…+185°F) |
| Relative Humidity | 5…95% non-condensing | 5…95% non-condensing |
| Conformal Coating | Yes (K or XT models) | Yes |
| Corrosive Atmosphere Rating | ASTM B845-97, ANSI/ISA 71.04–2013 Severity Level G3 | ASTM B845-97, IEC 60721-3-3:2019 Severity Level CX |
| Vibration Resistance | 2 g @ 10…500 Hz | 2 g @ 10…500 Hz |
| Shock Resistance (Operating) | 30 g | 30 g |
| Shock Resistance (Non-operating) | 50 g | 50 g |
| Electromagnetic Emissions Compliance | IEC 61000-6-4 | IEC 61000-6-4 |
| Electrostatic Discharge (ESD) Immunity | IEC 61000-4-2 (6 kV contact, 8 kV air) | Same |
| Radiated RF Immunity | IEC 61000-4-3 (10V/m) | Same |
| EFT/B Immunity | IEC 61000-4-4 (±4 kV at 5 kHz) | Same |
| Surge Immunity | IEC 61000-4-5 (±1 kV line-line, ±2 kV line-earth) | Same |
| Conducted RF Immunity | IEC 61000-4-6 (10V rms, 150 kHz…80 MHz) | Same |
| Check below popular items for more information in | Industrial Control Hub | |||
| Brand | Description | Price (USD) | Stock | Link |
| ALLEN-BRADLEY | 1715-OF8I Analog Output Module | 1357–2357 | 790 | 1715-OF8I Analog Output |
| ALLEN-BRADLEY | 1734-IR2E POINT I/O Resistance Temperature Detector | 500–1500 | 310 | 1734-IR2E RTD Module |
| ALLEN-BRADLEY | 1746-A13/B SLC Chassis Series B | 500–1500 | 870 | 1746-A13/B SLC Chassis |
| ALLEN-BRADLEY | 1492-CABLE025X Digital Cable Connection Products | 500–1500 | 360 | 1492-CABLE025X Digital Cable |
| ALLEN-BRADLEY | 1771-ASB PLC-5 Universal Remote I/O Adapter Module | 500–1500 | 570 | 1771-ASB Remote I/O Adapter |
| ALLEN-BRADLEY | 1492-CABLE-025Y Pre-Wired Digital Cable | 500–1500 | 790 | 1492-CABLE-025Y Digital Cable |
| ALLEN-BRADLEY | 1606-XLSRED80 Redundancy Module for DC Power Systems | 500–1500 | 360 | 1606-XLSRED80 Redundancy Module |