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PLC 1791 Block I/O Analog Module 1791-N4V2
Manufacturer: PLC
Condition: Brand New
Lead Time: In Stock
Origin: United States
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
- Overview
- Product Overview
- Key Functions
- Official Specifications
- Frequently Asked Questions
- Compatibility & Ordering Notes
- Hot Selling Models
- Recommended Products
Overview
Allen-Bradley · Allen-Bradley 1791 Block I/O
1791-N4V2 1791 Block I/O Analog Module
The 1791-N4V2 Block I/O module combines four configurable analog inputs with two isolated ±10 V outputs in a compact remote-I/O enclosure.
At a Glance
| Brand | Allen-Bradley |
|---|---|
| Model | 1791-N4V2 |
| Product Type | Remote analog input and voltage output block |
| Core Function | Acquires four analog inputs and provides two isolated voltage outputs |
| Application or Compatible Series | Remote I/O systems using Allen-Bradley 1791 analog blocks |
Exact Identification
Match 1791-N4V2 character by character and confirm the complete 1791 Block I/O Analog Module designation.
Interface Arrangement
Confirm the installed supply, ports, field connections and required accessories before wiring the replacement.
Configuration Check
Preserve the approved engineering project, network parameters and application data used by the installed system.
Product Overview
The 1791-N4V2 Block I/O module combines four configurable analog inputs with two isolated ±10 V outputs in a compact remote-I/O enclosure.
Four configurable input channels and two voltage outputs combine measurement and control in one remote block. Fourteen-bit conversion supports precise analog acquisition and output control. The module accepts AC power and supplies the documented 24 V DC loop-power output.
Key Functions
Mixed Analog Channels
Four configurable input channels and two voltage outputs combine measurement and control in one remote block.
High-Resolution Conversion
Fourteen-bit conversion supports precise analog acquisition and output control.
Integrated Field Power
The module accepts AC power and supplies the documented 24 V DC loop-power output.
Official Specifications
| Analog Inputs | 4 configurable channels |
|---|---|
| Analog Outputs | 2 voltage channels |
| Conversion Resolution | 14 bit |
| Input Bandwidth | 5 Hz |
| Input Update Time | 108 ms for all four channels |
| Voltage Input Impedance | 10 MΩ |
| Current Input Impedance | 249 Ω |
| Absolute Accuracy at 25 °C | 0.1% |
| Linearity | 0.05% |
| Output Range | ±10 V |
| Output Impedance | Less than 1 Ω |
| Internal Output Update | 10 ms per channel |
| AC Supply | 85 to 132 V AC, 47 to 63 Hz, 150 mA |
| Loop Supply Output | 20 to 28 V DC, 100 mA |
| Isolation Test Voltage | 500/1000 V AC |
| Power Dissipation | 16.9 W |
| Operating Temperature | 0 to 60 °C |
| Storage Temperature | -40 to +85 °C |
| Relative Humidity | 5% to 95% non-condensing |
| Dimensions | 176.5 x 68.8 x 98 mm |
Frequently Asked Questions
How many field channels are available on 1791-N4V2?
The block provides four configurable analog inputs and two isolated voltage outputs.
What output range is supported by 1791-N4V2?
Each analog output provides a ±10 V range.
Can 1791-N4V2 accept both voltage and current inputs?
Yes; the four input channels can be configured for the supported voltage or current signals.
What external power is required for 1791-N4V2?
Provide 85 to 132 V AC at 47 to 63 Hz within the stated current rating.
Does 1791-N4V2 provide transmitter loop power?
Yes; a 20 to 28 V DC, 100 mA loop supply output is available.
How fast does 1791-N4V2 update its input data?
All four input channels are updated in 108 ms.
What should be recorded before replacing 1791-N4V2?
Record the input ranges, output scaling, remote-I/O addressing, field wiring and controller configuration.
Compatibility & Ordering Notes
Compatibility Checklist
- Use the block only in an Allen-Bradley Remote I/O architecture that supports its rack and group assignment.
- Match every input range, output scale and wiring terminal to the existing configuration.
- Verify isolation, shielding and loop-power loading before energizing the replacement.
