Product Description
Product Details: Allen-Bradley 1756-OB16I DC Digital I/O Module
| Manufacturer | Model/Part Number | Description |
|---|---|---|
| Allen-Bradley | 1756-OB16I | DC Digital I/O Module |
Technical Specifications
| Attribute | 1756-OB16I / 1756-OB16IK |
|---|---|
| Number of Outputs | 16 individually isolated |
| Pilot Duty | 2 A (DC-13SQ) |
| Voltage Category | 12/24V DC sink/source |
| Operating Voltage Range | 10_30V DC (UL certified for 24V DC nominal) |
| Output Delay Time | Off to On: 1 ms max / On to Off: 2 ms max |
| Current Draw @ 5.1V | 350 mA |
| Current Draw @ 24V | 2.5 mA |
| Total Backplane Power | 1.8 W |
| Power Dissipation (Max) | 3.6 W @ 60°C (140°F) |
| Thermal Dissipation | 12.28 BTU/hr |
| Off-State Leakage Current (Max) | 0.5 mA per point |
| On-State Voltage Drop (Max) | 1.2V DC @ 2 A |
| Max Current per Point | 2 A @ 30°C (86°F) / 1 A @ 60°C (140°F) (linear derating) |
| Max Current per Module | 8 A @ 30°C (86°F) / 4 A @ 60°C (140°F) (linear derating) |
| Surge Current per Point | 4 A for 10 ms per point, repeatable every 2s |
| Load Current (Min) | 1 mA per point |
| Scheduled Outputs | Synchronization within 16.7 µs max (Coordinated System Time) |
| Fault Mode States per Point | Hold last state, On or Off (default Off) |
| Program Mode States per Point | Hold last state, On or Off (default Off) |
| Isolation Voltage | 250V continuous (basic insulation type, outputs-to-backplane), 125V continuous (output-to-output) |
| Module Keying | Electronic, software configurable |
| Fusing | Not protected (Fused IFM recommended for output protection) |
| Removable Terminal Block (RTB) | 1756-TBCH / 1756-TBS6H |
| RTB Keying | User-defined mechanical |
| Slot Width | 1 |
| Wire Category | Category 1 (Industrial Automation Wiring and Grounding Guidelines) |
| Enclosure Type | None (open-style) |
| Temperature Code | T4 |
Environmental Specifications
| Attribute | 1756-OB16I / 1756-OB16IK |
|---|---|
| Operating Temperature | 0_60°C (32_140°F) |
| Non-Operating Temperature | -40_85°C (-40_185°F) |
| Relative Humidity | 5_95% non-condensing |
| Vibration | 2 g @ 10_500 Hz (IEC 60068-2-6) |
| Shock (Operating) | 30 g (IEC 60068-2-27) |
| Shock (Non-Operating) | 50 g (IEC 60068-2-27) |
| Emissions Standard | IEC 61000-6-4 |
| Electrostatic Discharge (ESD) Immunity | IEC 61000-4-2 (6 kV contact, 8 kV air) |
| Radiated RF Immunity | IEC 61000-4-3 (10V/m with 1 kHz sine wave 80% AM from 80_2000 MHz) |
| EFT/B Immunity | IEC 61000-4-4 (±4 kV at 5 kHz on signal ports) |
| Surge Transient Immunity | IEC 61000-4-5 (±1 kV line-line, ±2 kV line-earth on signal ports) |
| Conducted RF Immunity | IEC 61000-4-6 (10V rms with 1 kHz sine wave 80% AM from 150 kHz_80 MHz) |
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