PRODUCT INFORMATION
Product Overview
Revision scope: These specifications describe 1769-IF8/A (Series A). Check the corresponding technical data before specifying another hardware series.
The Allen-Bradley 1769-IF8 is an eight-channel CompactLogix analog input module. It converts analog process signals into digital values for CompactLogix or MicroLogix 1500 controllers. Each high-impedance channel accepts either single-ended or differential wiring configurations. Supported voltage inputs include ±10 VDC, 0 to 10 VDC, 0 to 5 VDC, and 1 to 5 VDC. Current input ranges support 0 to 20 mA and 4 to 20 mA signals.
The module features delta-sigma analog-to-digital conversion with up to 16 bits of unipolar resolution. Bipolar resolution provides 15 bits plus sign. Power draw from the 1769 compact I/O backplane reaches 120 mA at 5 VDC. Series A modules draw up to 70 mA from the 24 VDC bus. The maximum power supply distance rating is eight module slots from the system power supply. Total heat dissipation is 3.24 W when all eight channels are energized.
TECHNICAL DATA
Technical Specifications
These specifications describe 1769-IF8/A (Series A). Check the corresponding technical data before specifying another hardware series.
| Parameter | Specification |
|---|
| Analog inputs | 8, configurable differential or single-ended |
|---|
| Normal voltage input ranges | ±10, 0–10, 0–5 or 1–5 VDC |
|---|
| Normal current input ranges | 0–20 or 4–20 mA |
|---|
| Maximum 5 V bus draw | 120 mA |
|---|
| Maximum 24 V bus draw | 70 mA on Series A |
|---|
| Heat dissipation | 3.24 W with all inputs energized |
|---|
| Converter | Delta-sigma |
|---|
| Unipolar resolution maximum | 16 bits |
|---|
| Bipolar resolution maximum | 15 bits plus sign |
|---|
| Working voltage | 30 VAC / 30 VDC maximum |
|---|
| Common-mode voltage | ±10 VDC per channel |
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| Voltage input impedance | 220 kohm typical |
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| Current input impedance | 250 ohm |
|---|
| Voltage accuracy at 25 °C | ±0.2% full scale |
|---|
| Current accuracy at 25 °C | ±0.35% full scale |
|---|
| Power supply distance rating | 8 modules maximum |
|---|
| Input group-to-bus isolation | 500 VAC or 710 VDC for one minute qualification test |
|---|
TECHNICAL INFORMATION
Order Information
| Revision Part # | Also known as |
|---|
| 1769-IF8 Ser A | 1769-IF8/A, Series A |
TECHNICAL INFORMATION
Features
- Eight configurable analog inputs support differential or single-ended connections.
- Delta-sigma converter delivers up to 16-bit unipolar resolution.
- Selectable digital filter frequencies optimize response time and noise rejection.
- Process alarms provide individual high and low threshold monitoring per channel.
- A 15-bit rolling timestamp provides 1 ms sampling resolution.
TECHNICAL INFORMATION
Connections / Interfaces
- A removable terminal block with finger-safe cover provides field wiring access.
- Channels support two-wire, single-ended, and differential transmitter circuits.
- Current inputs utilize 250 ohm loop impedance across input terminals.
- Integrated bus connectors link adjacent Compact I/O modules and controller platforms.
TECHNICAL INFORMATION
Installation Guidelines
- Maintain 50 mm clearance on all sides of the module for ventilation.
- Mount the module directly to a panel or install it onto standard DIN rail.
- Do not install the module more than eight slots away from the power supply.
- Lock the adjacent bus lever completely to secure electrical connections.
- Ground cable shields locally at the module using Belden 8761 or equivalent cable.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure channel ranges and data formats using controller programming software.
- Data formats include Engineering Units, Scaled for PID, Percent Range, and Raw counts.
- Unused channels can be disabled to optimize scan update speed.
- Alarm unlatch bits allow clearing latched high and low process conditions.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley CompactLogix controller systems.
- Operates in MicroLogix 1500 controller expansion banks.
- Connects to distributed DeviceNet networks via the 1769-ADN communication adapter.
TECHNICAL INFORMATION
Compliance and Certifications
- Council Directive 89/336/EEC EMC (EN 50081-2, EN 50082-2)
- Council Directive 73/23/EEC Low Voltage (EN 61131-2)
- Class I, Division 2, Groups A, B, C, D Hazardous Locations
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley CompactLogix controller systems. Operates in MicroLogix 1500 controller expansion banks. Connects to distributed DeviceNet networks via the 1769-ADN communication adapter.
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
How many analog inputs does the 1769-IF8 module support?
The module provides eight analog inputs. Channels support differential or single-ended wiring for voltage and current sensors.
What is the maximum power supply distance for the 1769-IF8?
The power supply distance rating is eight. The module cannot be positioned more than eight slots from the power supply.
What input data formats are supported by the 1769-IF8?
The module supports Engineering Units, Scaled-for-PID, Percent, and Raw/Proportional integer counts.
What is the backplane current draw for the 1769-IF8 Series A?
Series A draws a maximum of 120 mA at 5 VDC and 70 mA at 24 VDC.
