Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3. Product Introduction (Anti-Template)
Analog signals from transmitters and sensors still drive most process decisions on the plant floor. The 1769-IF8 brings eight of those signals into a CompactLogix chassis without consuming extra slots for separate voltage and current cards.
Each channel can be set independently for voltage or current, and the removable terminal block speeds field wiring changes. Plants that standardized on the 1769 platform keep this module on the shelf because a failed analog input can idle an entire machine section until a replacement is installed.
4. Key Technical Specifications
| Parameter | Value |
|---|---|
| Number of Inputs | 8 differential or single-ended |
| Voltage Ranges | ±10 V, 0–10 V, 0–5 V, 1–5 V |
| Current Ranges | 0–20 mA, 4–20 mA |
| Full-Scale Ranges | ±10.5 V / 0–21 mA (typical) |
| Resolution | 16 bits (unipolar); 15 bits + sign (bipolar) |
| Converter Type | Delta-Sigma |
| Backplane Current | 120 mA @ 5.1 V; 70 mA @ 24 V |
| Heat Dissipation | 3.24 W max |
| Input Impedance | Voltage: 220 kΩ; Current: 250 Ω |
| Isolation | 500 V AC / 710 V DC for 1 min (group to bus) |
| Operating Temperature | 0 °C to 60 °C |
5. Field Application & Technical Pitfalls (The Engineer’s Guide)
This module commonly reads pressure transmitters, level sensors, and flow meters on packaging lines, water treatment skids, and discrete machine stations that run CompactLogix controllers. The ability to mix voltage and current on the same card reduces spare-part variety.
Three pitfalls appear during replacement:
Channel configuration mismatch – the new module must be configured channel-by-channel in Studio 5000; leaving a channel set for the wrong range produces scaled values that look plausible but are wrong.
Wiring polarity and common errors – mixing differential and single-ended wiring or floating commons creates offset and noise that the filter cannot fully remove.
Power-supply distance rating – the module must stay within eight slots of the system power supply; exceeding the rating causes intermittent bus communication faults.
One plant swapped a failed IF8 and immediately saw oscillating readings on two channels. The terminal block had been moved without verifying the common connections; reseating and correcting the commons restored stable values within minutes.
1769-IF8
1769-IF8
1769-IF8
1769-IF8
6. Quality Control (QC) SOP & Transparency
- Inbound Verification – OEM labeling, series, and date codes are photographed and checked against the packing list; any signs of prior field use are noted.
- Live Rig Testing – module is installed in a known-good 1769 chassis, powered, and exercised with calibrated voltage and current sources across all eight channels.
- Parameter Testing – resolution, accuracy, and over/under-range detection are verified; backplane current draw is measured.
- Final QA & Packaging – unit is sealed in an anti-static bag with desiccant, fitted with a QC-passed label showing test date and technician ID, then double-boxed for shipment.
7. Frequently Asked Questions (FAQ)
Can each channel be set independently for voltage or current?
Yes. Configuration is performed per channel in the module properties of Studio 5000 / RSLogix 5000.
Does the 1769-IF8 supply loop power to transmitters?
No. External loop power must be provided for 4–20 mA transmitters.
What is the maximum distance from the system power supply?
The module carries a power-supply distance rating of 8. Do not place it more than eight modules away from the supply.
Is this module compatible with older CompactLogix controllers?
It works with 1769-L3x and later CompactLogix controllers that support the 1769 bus. Confirm firmware and software version compatibility before installation.
What warranty comes with a new-surplus unit?
Twelve months from shipment against defects in materials and workmanship when installed within the published ratings.
How do I confirm the module is healthy after installation?
Check the OK LED, verify each channel’s raw or engineering-unit value against a known source, and confirm that over-range and under-range bits behave as expected when the input is driven outside the configured limits.
