
Allen-Bradley 1756-PLS ControlLogix Programmable Limit Switch Module
- Brand
- Allen-Bradley
- Model
- 1756PLS
- GEARWELL SKU
- GWP-000000292
- Category
- PLCs & I/O
Key specifications
- Resolver accuracy
- ±0.0976% of full scale
- Digital I/O
- 16 inputs and 16 outputs
- Backplane current
- 1 A at 5.1 V DC; 125 mA at 24 V DC
- Resolver interface
- 2 V RMS reference output and 2 V RMS sine/cosine inputs
- Chassis width
- 3 contiguous slots
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← Back to productsProduct overview
The Allen-Bradley 1756-PLS is a ControlLogix programmable limit switch module for the 1756 chassis. It is built for packaging applications and takes three adjacent slots: a center resolver interface for an Allen-Bradley 846-SJ resolver (12-bit, tracking up to ±1800 RPM) and two side sections, each with two groups of four outputs and four inputs. Field wiring goes through three removable terminal blocks (1756-TBNH or 1756-TBSH), which are ordered separately. ControlLogix I/O modules can sit in any slot of a local ControlLogix chassis or in a remote chassis linked over EtherNet/IP or ControlNet, and their input data and output status can be shared by more than one controller.
Technical reference
| Product name | Allen-Bradley 1756-PLS ControlLogix Programmable Limit Switch Module |
|---|---|
| Brand | Allen-Bradley |
| Model | 1756PLS |
| Category | PLCs & I/O |
| Resolver accuracy | ±0.0976% of full scale |
| Digital I/O | 16 inputs and 16 outputs |
| Backplane current | 1 A at 5.1 V DC; 125 mA at 24 V DC |
| Resolver interface | 2 V RMS reference output and 2 V RMS sine/cosine inputs |
| Chassis width | 3 contiguous slots |
| Output current limit | Less than 4 A |
| Digital output operating voltage | 10 to 31.2 V DC; manufacturer-rated range 10.8 to 31.2 V DC, with UL certification at 24 V DC nominal |
| Enclosure type | None (open-style) |
| Resolver resolution | 12 bits; 0.088° per bit |
| Maximum output current per group | 4 A at 30 °C; derate 66.8 mA/°C above 30 °C to 2 A at 60 °C |
| Angular resolution | 0.088° per bit |
