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Allen Bradley 1771-IVN/C Low True Input Module
- Product Details
- FAQs
- Related
- Contact Us
- Packing & Delivery
- Product Ratings
Product Introduction
The Allen-Bradley 1771-IVN/C Low True Input Module is a digital input module designed for PLC-5 control systems, providing reliable signal acquisition from field devices operating with DC voltage levels. It is configured for low-true (sink) input logic, making it suitable for systems where input devices source current to the module.
This module supports 32 digital inputs organized into four groups of eight channels, enabling efficient monitoring of multiple field signals such as push buttons, limit switches, proximity sensors, and other discrete devices. Its group-based design simplifies wiring and enhances troubleshooting in complex industrial systems.
Built for integration within the 1771 I/O platform, the module ensures stable operation in harsh industrial environments, including areas with vibration and electrical noise. It is commonly used in automation systems requiring dependable and high-density digital input processing.
Product Specifications
| Parameter | Value |
|---|---|
| Product Type | Digital Input Module |
| Series | 1771 I/O |
| Model Number | 1771-IVN/C |
| Number of Inputs | 32 (4 groups of 8) |
| Input Type | Low-True (Sink) |
| Input Signal | 10–30 V DC digital input |
| Operating Voltage | 10–30 V DC |
| Logic Configuration | Source input devices (sink module) |
| Wiring Arm | 1771-WN |
| Series Version | Series C |
| Isolation | Group isolation |
| Mounting Type | Rack-mounted (1771 chassis) |
| Application Area | Industrial automation systems |
| Environmental Resistance | Resistant to vibration and EMI |
| Dimensions | 165 x 51 x 89 mm |
| Weight | 0.45 kg |
Applications
• Machine control systems
Monitors signals from push buttons, switches, and sensors for real-time control decisions.
• Process automation
Collects input signals from field instruments and discrete devices in industrial processes.
• Material handling systems
Detects status of conveyors, position sensors, and limit switches.
• Packaging and assembly lines
Provides input monitoring for synchronized automation and safety logic.
• General PLC-based monitoring
Suitable for applications requiring high-density digital input acquisition.
Advantages
• High input density
Supports 32 inputs in one module, improving system efficiency and space utilization.
• Low-true (sink) input configuration
Compatible with field devices that source current to the module.
• Grouped channel design
Simplifies wiring and enhances fault isolation and maintenance.
• Reliable industrial performance
Designed for stable operation in noisy and vibration-prone environments.
• Seamless PLC-5 integration
Fully compatible with Allen-Bradley 1771 I/O systems.
• Flexible installation
Works with standard wiring arm (1771-WN) for easy connection and replacement.
FAQ
- What does low-true (sink) input mean?
It means the module detects a valid signal when current flows into the input channel from a sourcing device, typically switching the input to ground to complete the circuit. - How many input channels are available and how are they organized?
The module provides 32 inputs divided into four groups of eight, which helps simplify wiring and allows easier identification of faults within each group. - What types of field devices can be connected to this module?
It supports a wide range of DC devices such as push buttons, proximity sensors, limit switches, and other discrete signal outputs operating within the voltage range. - What is the supported voltage range for input signals?
The module operates within a 10–30 V DC range, making it suitable for most standard industrial DC control systems. - Why is grouping of inputs important in practical applications?
Grouping allows better organization of wiring, simplifies troubleshooting, and can isolate issues to a specific section of the module rather than affecting all inputs. - Is this module compatible with all Allen-Bradley PLC systems?
It is specifically designed for PLC-5 systems using the 1771 I/O platform, and compatibility with other platforms is not guaranteed. - What role does the 1771-WN wiring arm play?
The wiring arm acts as the interface between field wiring and the module, allowing easier installation, replacement, and maintenance without disturbing wiring. - Can the module operate reliably in harsh industrial environments?
Yes, it is built to withstand vibration, electrical noise, and continuous industrial operation, ensuring stable signal acquisition. - What are the most common installation or configuration issues?
Typical issues include incorrect wiring polarity, improper voltage levels, poor grounding, or incorrect PLC configuration settings. - Does the module require software configuration after installation?
Yes, proper addressing and configuration within the PLC program are required to ensure correct interpretation of input signals.
Related Models
| Model | Description |
|---|---|
| 1771-IV | Standard digital input module |
| 1771-IA | AC input module |
| 1771-IBN | DC input module variant |
| 1771-IVP | Protected input module |
| 1771-IFE | Analog input module |
| 1771-OW16 | Relay output module |
Popular Models
| Model | Description |
|---|---|
| 1756-IB16 | ControlLogix digital input module |
| 1756-OB32 | Digital output module |
| 1756-EN2T | Ethernet communication module |
| 1769-L33ER | CompactLogix controller |
| 1769-IF4 | Analog input module |
| 1734-IB8 | POINT I/O input module |
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Excellent PLC Co., Ltd. has a large number of brand new and original PLC and DCS spare parts, with more than 60 cooperative countries. All products are guaranteed for 1 year and delivered to you by high-quality express. We are committed to using the best products and the most favorable prices to meet the needs and friendship of our customers. We have won the trust of thousands of customers, including these excellent customers.
As for the delivery time, when we receive your order requirements, we will arrange for warehouse personnel to test and verify the products. After you place the order, we will send it to you within 24 hours.
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