Allen-Bradley 1756-IB16I PLC Input Module
Core Specifications
| Parameter |
Details |
| Model Number |
1756-IB16I |
| Number of Channels |
16, single-channel independent electrical isolation |
| Input Type |
12/24V DC sink/source current universal |
| Input Voltage |
Rated 24V DC; Range 10–30V DC |
| On-state Current |
Minimum 2 mA @10V DC; Maximum 10 mA @30V DC |
| Shutdown Current |
Maximum 1.5 mA; Shutdown Voltage ≤5V DC |
| Isolation Withstand Voltage |
Channel-to-Channel / Channel-to-Backplane: 250V DC continuous; 1350V AC 1s test |
| Backplane Power Consumption |
0.58 W; 100 mA at 5.1V, 3 mA at 24V |
| Maximum Power Consumption |
5 W @60°C |
| Net Weight |
0.20 kg (0.44 lbs) |
| Installation |
Single Slot ControlLogix Rack; requires removable terminal block (RTB) |
| Terminal Models |
1756-TBCH / 1756-TBS6H |
| Diagnostics |
LED status per channel; module health / communication indicator |
| Filtering |
Software optional: 0/1/2/9/18 ms |
| Timestamp Accuracy |
Input status timestamp accuracy ±200 μs |
| Operating Environment |
0–60°C; IP20 open; UL/CSA/CE certified |
| Lifecycle Status |
Active (in production) |
Key Features
- Fully isolated design: 16 channels independently isolated for strong anti-interference and effective fault isolation
- Wide voltage compatibility: 10–30V DC range compatible with 12V/24V industrial sensors and switches
- Configurable filtering: Software-set input filtering time to suppress signal jitter
- Real-time diagnostics: Status LEDs per channel for quick fault location and troubleshooting
- Reverse polarity protection: Reversed input wiring will not damage the module
Logistics and Packaging
Net Weight: 0.20 kg (module body, excluding terminal blocks)
Gross Weight Recommendation: 0.3–0.4 kg/unit (including packaging and terminal blocks)
Dimensions: Standard ControlLogix single-slot module, approximately 118×138×30 mm
All specifications are based on official Rockwell Automation documentation