Allen-Bradley 1771-NIS PLC-5 Current Input Module
$123.00
$320.00
Description
Allen-Bradley 1771-NIS PLC-5 Current Input Module
Configured for isolated 4-20 mA transmitter signal acquisition in PLC-5 systems, the Allen-Bradley 1771-NIS (1771-NIS Current Input Module) provides direct analog current measurement and loop power supply functions through the 1771 I/O chassis interface.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-NIS |
| Brand | Allen-Bradley |
| Product Type | Current Input Module |
| System Platform | PLC-5 |
| Module Type | N-Series Analog I/O Module |
| Number of Inputs | 8 Inputs |
| Input Type | Current Input, Sinking/Sourcing |
| Input Range | 4-20 mA |
| Input Resolution | 0.34 microamperes/bit |
| Loop Power | Supports loop power for 2-wire transmitters |
| Data Format | BCD or Natural Binary |
| Isolation | Isolated analog inputs |
| Backplane Current | 2.9 A |
| RTP Choice | 1771-RTP4 |
| Wiring Arm | 1771-WH |
| Mounting | Rack Mountable |
| Weight | 1 lbs |
| Operating Temp | 0 to 60 deg C |
| Humidity | Up to 95% RH, non-condensing |
| Power Consumption | Approx. 14.5 W at 5 VDC |
PLC-5 Analog Current Signal Processing Characteristics
The 1771-NIS module provides eight isolated analog current input channels for PLC-5 control systems. Each channel accepts 4-20 mA signals from field transmitters and supports loop-powered 2-wire transmitter connections through the module interface.
The Allen-Bradley PLC-5 analog I/O architecture uses backplane data exchange for input transfer. The 1771-NIS provides selectable data representation using BCD or Natural Binary formats for PLC processor interpretation.
The module supports industrial control applications requiring analog input density scaling and isolated current signal acquisition. Firmware compatibility and PLC-5 backplane communication are managed through the standard 1771 I/O chassis interface.
Frequently Asked Questions
Q: What type of field signals can the 1771-NIS measure?
A: The module measures analog current signals in the 4-20 mA range and supports loop-powered 2-wire transmitters.
Q: How many analog input channels are available on the 1771-NIS?
A: The module provides 8 current input channels with isolated analog input processing.
Q: What is the backplane current requirement of the 1771-NIS?
A: The module requires 2.9 A of backplane current from the PLC-5 chassis supply.
Field Installation Guidelines
Install the 1771-NIS module only in a compatible Allen-Bradley 1771 I/O chassis with backplane power removed during module insertion or removal. Verify chassis power capacity before installation due to the module backplane current requirement.
Connect 4-20 mA field wiring according to transmitter polarity and current loop requirements. Maintain separation between analog signal cables and high-voltage power conductors to reduce electrical noise coupling. Use appropriate shielding and grounding practices for analog instrumentation wiring.
Confirm transmitter loop power requirements before connection. Inspect wiring arms and terminal connections for correct mechanical engagement before applying system power.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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