PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-IFM is an Analog Input Module designed for the PLC-5 system architecture. This fast millivolt module provides eight differential input channels for measuring low-level voltages. It operates over a designated input voltage range of 0 to 50 mV. The unit provides accurate data conversion for specialized millivolt instrumentation in industrial environments.
Signal acquisition utilizes a 12-bit binary analog-to-digital converter exhibiting monotonic output behavior. The hardware achieves a linearity rating of plus or minus 1 LSB. Repeatability across differential channels is also specified at plus or minus 1 LSB. The physical assembly has a net weight of 0.63 lbs (0.28 kg). Operating and storage temperatures both range between 0 °C and 40 °C.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Module Type | Fast Millivolt Input Module |
|---|
| Channel Count | 8 differential input channels |
|---|
| Input Voltage Range | 0 to 50 mV |
|---|
| Resolution | 12-bit binary |
|---|
| Linearity | ±1 LSB |
|---|
| Repeatability | ±1 LSB |
|---|
| A/D Converter Behavior | Monotonic output |
|---|
| Operating Temperature | 0 °C to 40 °C |
|---|
| Storage Temperature | 0 °C to 40 °C |
|---|
| Net Weight | 0.63 lbs (0.28 kg) |
|---|
TECHNICAL INFORMATION
Features
- Eight differential low-level analog input channels
- Fast millivolt measurement range spanning 0 to 50 mV
- 12-bit binary analog-to-digital conversion resolution
- Monotonic A/D converter output characteristics
- Linearity and repeatability ratings within ±1 LSB
- Total module weight of 0.63 lbs (0.28 kg)
TECHNICAL INFORMATION
Applications
- Low-level millivolt transducer signal acquisition in PLC-5 systems
- Differential low-voltage instrumentation interfacing
- Industrial process monitoring requiring 12-bit analog input resolution
TECHNICAL INFORMATION
Connections / Interfaces
- Eight differential low-level millivolt input connections
- Backplane communication interface for 1771 I/O systems
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module into a compatible 1771 I/O chassis.
- Verify environmental ambient conditions remain between 0 °C and 40 °C.
- Use shielded cabling for low-level millivolt input wiring to minimize noise.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure controller data tables to process 12-bit binary input data.
- Map all eight differential channels within the PLC-5 processor I/O rack configuration.
TECHNICAL INFORMATION
Compatibility
- Allen-Bradley PLC-5 Control Systems
- Allen-Bradley 1771 Series I/O Chassis
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSAllen-Bradley PLC-5 Control Systems Allen-Bradley 1771 Series I/O Chassis
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 input signal range does the Allen-Bradley 1771-IFM accept?
The 1771-IFM accepts low-level differential voltage signals within a range of 0 to 50 mV across eight channels.
What is the conversion resolution of the 1771-IFM module?
The module features a 12-bit binary resolution with monotonic analog-to-digital converter behavior.
What are the operating temperature limits for the 1771-IFM?
The operating and storage temperature range for the 1771-IFM is specified from 0 °C to 40 °C.
