PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-IB8 is an SLC 500 Digital DC Input Module. It features eight current sinking inputs operating at a nominal 24V DC. The module functions across an operating voltage range of 10 to 30V DC. It draws 50mA of backplane current at 5V DC. The backplane current consumption at 24V DC is 0.0mA. The unit maintains an 8ms maximum signal delay during both ON and OFF transitions.
Thermal dissipation for the module equals 1.3W total, generating 4.4 BTU per hour. Power dissipation per output point reaches a maximum of 0.27W. Isolation between backplane and inputs meets a 1500V AC dielectric rating. Operating ambient temperature ranges between 0 and 60 °C with 5 to 95 percent non-condensing relative humidity. The module withstands 30G operational shock and 2.5G vibration at 57 to 500Hz.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Applications | General Purpose DC Inputs |
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| Backplane Current (5 Volts DC) | 50 milliamps |
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| Category | PLCs |
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| GTIN | 10662073521256 |
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| I/O Connection | 1746-HT and 1746-HCA |
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| Inputs | 8 |
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| Module Type | Digital DC Input Module |
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| Off State Current | 1 milliamps |
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| Signal delay | 8 milliseconds |
|---|
| Step Response | 100 milliseconds in, 2.5 milliseconds out |
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| UPC | 10662073521256 |
|---|
| Voltage Range | 10-30 Volts DC Sink |
|---|
| Weight | 0.44 lbs (0.20 kg) |
|---|
TECHNICAL INFORMATION
Features
- Provides eight 24V DC current sinking input channels.
- Supports an operational input range of 10 to 30V DC.
- Consumes 50mA backplane current at 5V DC.
- Signal delay is rated at 8ms for ON and OFF transitions.
- Features 1500V AC dielectric isolation between backplane and inputs.
- Withstands 30G operational shock and 2.5G vibration at 57 to 500Hz.
TECHNICAL INFORMATION
Applications
- General purpose DC discrete input monitoring in SLC 500 systems.
- Interfacing 24V DC switching devices, sensors, and limit switches.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to field wiring using 1746-HT and 1746-HCA terminal assemblies.
- Direct backplane interface via standard SLC 500 chassis slots.
TECHNICAL INFORMATION
Installation Guidelines
- Install into any open slot of a compatible SLC 500 chassis.
- Disconnect system power before inserting or removing the module.
- Maintain ambient operating temperatures within 0 to 60 °C.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley SLC 500 I/O chassis assemblies.
- Compatible with 1746-HT and 1746-HCA wiring connectors.
TECHNICAL INFORMATION
Compliance and Certifications
- UL listed.
- CE certified.
- Tested for noise immunity per NEMA standard ICS 2-230.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley SLC 500 I/O chassis assemblies. Compatible with 1746-HT and 1746-HCA wiring connectors.
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
What is the operating voltage range of the 1746-IB8?
The 1746-IB8 operates across a 10 to 30V DC range, with a 24V DC nominal rating.
What is the backplane current draw for the 1746-IB8?
The module draws 50mA at 5V DC and 0.0mA at 24V DC from the backplane.
Which wiring connectors are compatible with the 1746-IB8?
Field wiring connects using 1746-HT and 1746-HCA connector assemblies.
