PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-NI16V is an SLC 500 I/O Module designed for voltage signal acquisition. It provides sixteen input channels compatible with bipolar and unipolar DC voltage ranges. Supported electrical inputs include plus or minus 10V DC, 1 to 5V DC, and 0 to 10V DC. It uses a Sigma-Delta conversion type and delivers 16-bit resolution across all channels.
The module communicates with the SLC 500 processor using a parallel rear-facing backplane interface. It draws 125 milliamps at 5V DC and 75 milliamps at 24V DC backplane current. Total backplane power consumption reaches 2.425 Watts maximum under full load conditions. Field wiring connects via a replaceable 1746-RT25G terminal block or pre-wired cable assemblies. Operating temperature ranges from -25 to 60 degrees Celsius without condensation.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Applications | Combination 120 Volts AC I/O |
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| Backplane Current | (5 Volts) 125 mA;(24 Volts DC)75 mA |
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| Backplane Current (24 Volts DC) | 75 milliamps |
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| Backplane Current (5 Volts) | 125 milliamps |
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| Bandwidth | 6-250 Hertz |
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| Category | PLCs |
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| Chassis location | Any I/O module slot except slot 0 |
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| Conversion type | Sigma - Delta |
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| Electrical Signal type | ±10V dc, 1 to 5V dc, 0 to 5V dc, 0 to 10V dc, |
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| Input Filter Frequencies | 6 Hz, 10 Hz, 20 Hz, 40 Hz, 60 Hz, 80 Hz, 100 Hz, 250 Hz |
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| Input Filtering | Low-pass digital filter with programmable filter frequencies |
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| Inputs | Sixteen (16) |
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| Isolation | 500V ac isolation for 1 second |
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| LED Indicators | 5 green status indicators one for each group of 4 channels, and one for module status |
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| Module Type | Analog I/O Module |
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| Recommended Cable | Belden #8761 or equivalent |
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| Step Response | 9-630 milliseconds |
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| UPC | 611320228205 |
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| Weight | 1.50 lbs (0.68 kg) |
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TECHNICAL INFORMATION
Features
- Sixteen voltage input channels supporting bipolar and unipolar signal ranges.
- Sigma-Delta analog-to-digital conversion architecture with 16-bit resolution.
- Programmable low-pass digital filter frequencies from 6 Hertz to 250 Hertz.
- Step response selectable between 9 milliseconds and 630 milliseconds.
- Five green LED indicators displaying group channel and module operational status.
- Removable 1746-RT25G terminal block allows replacement without rewiring field cables.
- Total module backplane power consumption reaches 2.425 Watts maximum.
TECHNICAL INFORMATION
Applications
- Combination 120 Volts AC I/O monitoring systems.
- Analog DC voltage acquisition in SLC 500 modular control architectures.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects using the 1746-RT25G terminal block or a 25-pin D-shell connector.
- Supports pre-wired cables in standard lengths of 0.5, 1, 2.5, and 5.0 meters.
- Compatible with 1492-AIFM8-3 and 1492-AIFM16-F-3 interface modules.
- Recommended wiring uses Belden 8761 shielded cable or an equivalent specification.
TECHNICAL INFORMATION
Installation Guidelines
- Install into any available SLC 500 chassis slot except slot 0.
- Slot 0 of the main chassis is dedicated to the system controller.
- Disconnect all power before inserting or removing the module.
- Maintain operating temperatures between -25 and 60 degrees Celsius.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure digital low-pass filtering between 6 Hz and 250 Hz based on loop requirements.
- Select step response times between 9 and 630 milliseconds depending on filter settings.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley SLC 500 local and expansion chassis.
- Interfaces with SLC 500 modular processors via the backplane.
- Connects to Allen-Bradley 1492 series wiring systems.
TECHNICAL INFORMATION
Compliance and Certifications
- UL Listed.
- C-UL Approved.
- CE Compliant for all applicable directives.
- Approved for Class I Division 2 hazardous locations.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley SLC 500 local and expansion chassis. Interfaces with SLC 500 modular processors via the backplane. Connects to Allen-Bradley 1492 series wiring systems.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
Which chassis slot does the 1746-NI16V require?
The module can reside in any available slot except slot 0 of the main chassis.
What input voltage ranges does the 1746-NI16V accept?
It supports plus or minus 10V DC, 1 to 5V DC, 0 to 5V DC, and 0 to 10V DC.
What is the backplane current consumption for the 1746-NI16V?
It draws 125 milliamps at 5V DC and 75 milliamps at 24V DC backplane power.
Can the 1746-NI16V be replaced under power?
No. Disconnect power before insertion or removal to prevent electrical arcing.
