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.
Product Introduction
When your critical process plant’s safety system needs high-precision, fault-tolerant analog signal acquisition to prevent hazardous process excursions, this module acts as the “safety eyes” of the Modicon Quantum safety control system.
It features full electrical isolation between channels and backplane bus, effectively eliminating ground loop interference and electromagnetic noise. Its built-in comprehensive self-diagnostic mechanism continuously monitors signal validity and internal hardware health, triggering immediate safety alarms when anomalies are detected .
Schneider Electric 140SAI94000S
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 140SAI94000S |
| Supported System | Modicon Quantum Safety Control System |
| Number of Input Channels | 8 independent analog safety input channels |
| Input Signal Range | 0 mA to 25 mA DC |
| A/D Conversion Resolution | 16-bit high precision |
| 4-20mA Raw Digital Range | 10368 ~ 51840 linear measurement range |
| Signal Update Time | 15 ms fast response |
| Safety Certification | TÜV Rheinland SIL 2 functional safety certified |
| Power Supply | 24 VDC, 3.5 W low power consumption |
| Operating Temperature Range | -40°C ~ +70°C |
| Storage Temperature Range | -40°C ~ +85°C |
| Relative Humidity | 5% ~ 95% non-condensing |
| Protection Rating | IP67 |
| Dimensions | 146 mm × 89 mm × 35 mm |
| Net Weight | 500 g |
| Installation Method | DIN rail mounting |
Schneider Electric 140SAI94000S
Field Application & Technical Pitfalls
Critical Industrial Scenarios
- Oil & Gas ESD System Monitoring: Collects pressure, temperature and flow safety signals for refinery emergency shutdown systems, ensuring accurate and reliable safety parameter monitoring.
- **Chemical Plant Hazardous Process Control: Monitors critical reaction tank level, pH and temperature safety points, triggering safety interlock actions before process parameters exceed hazardous limits.
- **Power Generation Boiler Safety Protection: Acquires boiler drum pressure and flue gas temperature safety signals, supporting fast and reliable boiler safety protection logic execution.
Non-Negotiable Technical Pitfalls
- ⚠️ Bold Warning 1: Never connect non-safety rated 4-20mA transmitters directly to this module. The third channel from the left will break the SIL 2 safety loop integrity, invalidating the entire system’s functional safety certification.
- ⚠️ Bold Warning 2: Skipping the full channel signal calibration after installation will leave you with 5% reading offset. This unit requires a full 4-20mA point calibration to achieve rated 16-bit measurement accuracy.
- ⚠️ Bold Warning 3: Do not disable the built-in channel fault diagnosis function in the configuration software. The module will lose the ability to detect open-circuit sensor faults, creating hidden safety risks.
A chemical plant maintenance team once swapped a 140SAI94000S module and skipped the full channel calibration. The 7% pressure reading offset caused the safety system to miss a high-pressure alarm, triggering a 2-hour partial plant shutdown that cost over $15,000 in lost production.
Schneider Electric 140SAI94000S
Quality Control (QC) SOP & Transparency
- Inbound Verification: Cross-check the OEM serial number against Schneider Electric’s official part registry, confirm the TÜV Rheinland SIL 2 certification mark is intact, and inspect no bent pins on the backplane connector.
- Live Rig Testing: Power the unit in a calibrated Modicon Quantum test rack, apply 24V DC power, and confirm full 8-channel signal acquisition stability for 2 continuous hours.
- Parameter Testing: Verify 16-bit resolution measurement accuracy stays within ±0.05% of full scale, confirm 15ms signal update performance meets specifications, and validate all fault diagnosis and LED status indicators function correctly.
- Final QA & Packaging: Seal the tested module in a static-shielding anti-static bag, attach a unique QC passed serial label, and nest it in foam padding inside a rigid industrial shipping carton.
Schneider Electric 140SAI94000S
Frequently Asked Questions (FAQ)
- Can I hot-swap this module while the Modicon Quantum safety system is running? No. You must first place the corresponding safety loop in maintenance bypass mode before removing the unit, otherwise you will trigger a safety system fault alarm.
- What exact Schneider systems is this module compatible with? It works natively with all Modicon Quantum safety control system racks. It will not operate correctly with standard Modicon M340/M580 PLC platforms without a custom safety configuration patch.
- How long is the standard warranty for this new surplus unit? 12 months from delivery. It covers all manufacturing defects, but does not extend to units damaged by overvoltage, miswiring, or improper safety loop configuration in the field.
- How do I tell a genuine OEM unit apart from a refurbished clone? Genuine Schneider 140SAI94000S units have a laser-etched part number on the side housing, not a printed sticker. Clone units almost always fail the 16-bit full-range measurement accuracy test.
- What is the typical lead time for shipment? In-stock units ship within 48 hours. If you require official Schneider Electric TÜV SIL 2 safety certification documentation, add 2 extra business days to the turnaround window.
- Can this module replace the older 140ATI03000 standard analog input module? Well, technically it fits the same rack slot, but you will need to reconfigure all safety loop parameters in the Unity Pro safety software to maintain SIL 2 functional safety compliance.
Pre: B&R 8LS46 | Global Stock High-Performance Servo Motor
Next: Schneider 140XBE10000 | Quantum Backplane Expander, Fast Shipping
