PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-IV8 is an SLC 500 Current Sourcing DC Input Module. This module provides eight digital input channels operating at a nominal voltage of 24 Volts DC. The operating voltage range for all input channels spans from 10 to 30 Volts DC. Front-mounted LED indicators display the active status of each individual channel.
The module draws 50 milliamps of backplane current at 5 Volts DC and zero current at 24 Volts. Signal transition delay is 8 milliseconds for both off-to-on and on-to-off conditions. The maximum off-state voltage is 5.0 Volts DC with a maximum off-state leakage of 1 milliampere. Field wiring interfaces using 14 AWG conductors connected directly to the module terminal block.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Applications | Combination 120 Volts AC I/O |
|---|
| Backplane Current (5 Volts DC) | 50 milliamps |
|---|
| Category | PLCs |
|---|
| Input current | 8 mA @ 24V DC, nom |
|---|
| Input voltage range | 10-30 VDC |
|---|
| Inputs | 8 |
|---|
| Module Type | 24VDC input module |
|---|
| No. of groups | 1 |
|---|
| Off State Current | 1 milliamps |
|---|
| Off-state current, max | 1 mA |
|---|
| Off-state voltage, max | 5.0V DC |
|---|
| Operating Temperature | 0...+60 °C (+32...+140 °F) |
|---|
| Product Line | SLC 500 |
|---|
| Relative Humidity | 5 to 95% without condensation |
|---|
| Signal delay | ON = 8 ms; OFF = 8 ms |
|---|
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
|---|
| UPC | 662073521280 |
|---|
| Voltage Range | 10-30 Volts DC Source |
|---|
| Weight | 0.31 lbs (0.14 kg) |
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| Input Voltage | 24 V DC |
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| Number of Inputs | 8 Points |
|---|
| Input Type | Sourcing (current sourcing field devices) |
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| Backplane Current | 0.050 A at 5 V DC |
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| Off-State Voltage Max | 5 V DC |
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| On-State Voltage Range | 10 - 30 V DC |
|---|
| Mounting | Chassis-based (SLC 500 rack) |
|---|
TECHNICAL INFORMATION
Features
- Features eight sourcing input channels operating across 10 to 30 Volts DC.
- Draws 0.050 Amperes from the 5 Volt DC backplane without external logic power.
- Provides signal transition filtering with 8-millisecond delay for on and off states.
- Incorporates individual channel status LED indicators on the front panel.
- Supports standard 14 AWG signal wiring for direct terminal connection.
TECHNICAL INFORMATION
Applications
- Interfacing auxiliary contacts, limit switches, and two-wire sourcing sensors.
- Digital DC input integration within SLC 500 chassis architectures.
- Mixed AC and DC I/O configurations alongside 120 Volt AC modules.
TECHNICAL INFORMATION
Connections / Interfaces
- Eight digital input channels arranged in a single electrical group.
- Terminal connections accommodate wiring sizes up to 14 AWG.
- Chassis backplane connector supplies all required 5 Volt DC operating logic current.
TECHNICAL INFORMATION
Installation Guidelines
- Disconnect all rack power before inserting or removing the module from the chassis.
- Removing modules under power generates electrical arcing and damages connector contacts.
- Install the module into any available slot within an SLC 500 chassis.
- Terminate signal wires using 14 AWG wiring to ensure secure terminal seating.
TECHNICAL RESOURCES
Documentation
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
What type of input signals does the 1746-IV8 accept?
The module accepts 10 to 30 Volt DC sourcing signals across eight separate input channels.
Does the 1746-IV8 require an external power supply to operate?
No external supply is needed because it draws 50 milliamps directly from the 5 Volt backplane.
Can the 1746-IV8 be inserted or removed under power?
No. Power must be removed before insertion or removal to prevent electrical arcing and connector damage.
What is the market reference price for the 1746-IV8?
Observed market pricing is approximately 98 USD for refurbished condition. This is an indicative market reference only, not a final quotation.
