PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-FIO4I SLC 500 Analog Combination Module provides fast analog input and output capabilities. This single-slot module combines two differential analog inputs and two analog current outputs. The input channels offer 12-bit resolution and accept 0 to 10 VDC or 0 to 20 mA signals. The output channels provide 14-bit resolution and deliver 0 to 20 mA current loops. This design conserves chassis slot space in compact automation systems.
The module operates in modular and fixed SLC 500 chassis architectures. It draws 55 mA at 5 VDC and 150 mA at 24 VDC from the backplane. Each input features a fast conversion time of 7.5 microseconds every 512 microseconds. Isolation between the backplane and field circuits is rated at 500 VDC. Differential input circuitry helps reject common-mode electrical noise in industrial control panels.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Backplane Current (24 Volts) | 150 milliamps |
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| Backplane Current (5 Volts) | 55 milliamps |
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| Bandwidth | 7 kilohertz |
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| Category | PLCs |
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| Compatible Hardware | SLC 500 Fixed and Modular style |
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| Conversion method | Successive approximation |
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| Conversion time | 7.5 µs every 512 µs |
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| Input resolution | 12 bit |
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| Input signals | 0-10 VDC; 0-20 mA |
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| Inputs | 2 |
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| Module Type | Analog Combination Module |
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| Module width | Single slot |
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| No. of Inputs | Two (2) Voltage / Current inputs |
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| No. of Outputs | Two (2) 0-20 mA |
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| Output resolution | 14-bit |
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| Outputs | 2 |
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| Resolution | 12 bits in, 14 bits out |
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| Step Response | 100 milliseconds in, 2.5 milliseconds out |
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| Track and Hold Time before conversion | 1.5 µs |
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| UPC | 662468523400 |
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| Update Time | 512 microseconds |
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| Weight | 1.50 lbs (0.68 kg) |
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TECHNICAL INFORMATION
Features
- Combines two analog inputs and two analog outputs in a single slot
- Provides 12-bit analog input resolution and 14-bit analog output resolution
- Selectable differential input ranges for 0 to 10 VDC and 0 to 20 mA
- Output channels deliver 0 to 20 mA current loop signals
- Fast input conversion time of 7.5 microseconds every 512 microseconds
- Field-to-backplane isolation rated at 500 VDC
TECHNICAL INFORMATION
Applications
- Rapid closed-loop analog control in SLC 500 automation systems
- Compact control panels requiring analog I/O within a single slot
- Interfacing 0-10 VDC and 0-20 mA field transmitters to SLC 500 processors
TECHNICAL INFORMATION
Connections / Interfaces
- Two differential input channels configurable per channel for current or voltage
- Two non-isolated current output channels
- Connection terminals support wire sizes up to 14 AWG (2.5 mm²)
- Recommended cabling is shielded Belden 8761
TECHNICAL INFORMATION
Installation Guidelines
- Install the module into any compatible single slot of an SLC 500 chassis
- Confirm backplane power supply can deliver 55 mA at 5V and 150 mA at 24V
- Maintain separation between signal wiring and high-voltage power wiring
- Ground cable shields according to standard SLC 500 installation practices
TECHNICAL INFORMATION
Configuration Guidelines
- Configure individual input channels for either 0 to 10 VDC or 0 to 20 mA
- Scale 12-bit input and 14-bit output registers in controller ladder logic
TECHNICAL INFORMATION
Compatibility
- Allen-Bradley SLC 500 modular chassis systems
- Allen-Bradley 1747-L20, 1747-L30, and 1747-L40 fixed controllers via expansion racks
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSAllen-Bradley SLC 500 modular chassis systems Allen-Bradley 1747-L20, 1747-L30, and 1747-L40 fixed controllers via expansion racks
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 primary function of the Allen-Bradley 1746-FIO4I?
It provides two fast analog inputs and two current outputs in one SLC 500 module.
What signal types does the 1746-FIO4I module support?
Inputs support 0 to 10 VDC or 0 to 20 mA. Outputs deliver 0 to 20 mA.
What is the resolution of the inputs and outputs on the 1746-FIO4I?
The inputs provide 12-bit resolution and the outputs provide 14-bit resolution.
What cable is recommended for wiring the 1746-FIO4I module?
Shielded Belden 8761 cable with maximum 14 AWG wire size is recommended.
