Product Specification
| Attribute | Value | Image |
|---|---|---|
| Manufacturer | Allen Bradley |  |
| Product no. | 1771-ws | |
| Product type | Single Slot Weigh Scale Module | |
| Modes of Operation | Local and Remote | |
| Averages | 1-200 User Selectable in single increments | |
| Input | Up to eight (4) 350 ohm Full Wheatstone Bridge, Strain Gauge Load Sensors/Cells (5 volt excitation) on one vessel. | |
| Non-Linearity | 0.0040% of Full Scale | |
| Maximum Zero Tolerance | 32766 | |
| Common-Mode Rejection | 100dB at or below 60 Hz | |
| Common-Mode Voltage Range | 2.5VDC maximum (with respect to earth ground) | |
| Backplane Input Voltage | Continuous 40.0 VDC Maximum | |
| Backplane Current Load | 1.50 Amps at 5 VDC Maximum | |
| Power | +5 VDC +/- 5% | |
| C2 Calibration Input | Isolation from digital section 1000 VDC minimum. | |
| Conversion Rate | 20 updates per second |
Product Details
MORE DESCRIPTION
The 1771-WS is a weigh scale module designed and manufactured by Allen-Bradley as part of the 1771 series. Its primary function is to receive and interpret values from one or more industrial load cells. With an external power supply, it can accommodate up to eight load cells. The module utilizes calibration values obtained from a data table, which are then block-transferred to a PLC-5 processor. The 1771-WS operates with a power supply of 5 Volts DC ± 5%, a continuous backplane input voltage of 40 Volts DC, and a backplane current load of 1.50 Amps at a specific voltage of 1000 Volts DC.
Support for Allen-Bradley PLC5
The Hardy Process Solutions HI 1771-WS is a single slot weigh scale module that mounts in an Allen-Bradley 1771 Universal I/O chassis. It reads weight data from strain gage load sensors and communicates this data over the I/O chassis backplane to one of Allen-Bradley's PLC-5 family of Programmable Controller Processors. The HI 1771-WS module reduces installation costs as it needs no external stand-alone scale instrument, and provides a wired communications link to the PLC.
Compatibility
Single Slot Design: Fits into the 1771 Universal I/O chassis, optimizing space in control panels.
Multi-Load Cell Support: Capable of interfacing with up to eight 350-ohm load cells when an external power supply is used.
Calibration Integration: Utilizes calibration values from a data table for accurate weight measurement.
Block Transfer Capability: Efficiently transfers data to PLC-5 processors in block format for streamlined communication.
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Email: sales@sparecenter.com
