Product Summary
The Allen-Bradley 1771-IL provides eight fully isolated differential input channels. This module converts analog signals from field instruments into digital data for your PLC5 system. It supports universal voltage and current ranges for flexible integration.
Expert Technical Evaluation & Performance Review
The 1771-IL offers exceptional signal integrity for critical industrial processes. Each of its eight channels provides true 1000-volt isolation. This design eliminates ground loops and protects your control system from electrical noise.
You can configure each channel for voltage or current inputs. The module supports standard ranges like 0 to 10V dc and 4 to 20mA. This flexibility allows direct connection to many sensors and transmitters.
The module delivers impressive measurement accuracy. For voltage signals, you get typical accuracy of 0.01% of full scale. This precision ensures reliable data for closed-loop control applications.
For current inputs, the typical accuracy remains at 0.06% of full scale. This performance holds when you use the internal current resistor. Your process measurements will stay consistent over time.
The 1771-IL features a 16-bit resolution over its full range. This high resolution provides fine granularity for your analog data. Your controller receives detailed, actionable information from each channel.
The module includes integral open circuit detection. It also provides input overvoltage protection and auto-calibration. These features simplify maintenance and extend the module's operational life.
An internal scan rate of 50 milliseconds updates all eight channels. This speed is sufficient for most process monitoring tasks. Your system receives fresh data without significant delay.
The module converts signals to natural binary or BDC format. Unipolar ranges map to 0000 to +4095 counts. Bipolar ranges map to -4095 to +4095 for signed values.
You can scale the raw data to a range of +/- 9999. This scaling matches your engineering units directly. Your programming task becomes simpler and more intuitive.
The 1771-IL draws only 1.3 amperes from the backplane. It fits into a single slot in any 1771 I/O chassis. This low power draw keeps your system's power budget manageable.
You should use the recommended 1771-WG wiring arm. This arm simplifies field wiring connections. It ensures secure and reliable terminations for your analog signals.
Logistics & Standard Packaging Details
We ship all orders with express delivery services. You can choose from FedEx, UPS, and DHL for fast transit.
