Schneider 140SAI94000S Analogue Safety Input Module

Product Description

The Schneider 140SAI94000S Analogue Safety Input Module is part of the Modicon Quantum automation platform, engineered for high-reliability safety-critical applications. It provides precise analogue input measurement with robust isolation, diagnostic signalling, and compliance with international safety standards.

Main Features

• Product Range: Modicon Quantum automation platform

• Component Type: Analogue safety input module

• Filter Type: Single-pole low-pass, -3 dB at 15 Hz

Complementary Specifications

• Analogue Inputs: 8 channels

• Addressing Requirement: 13 input words

• Resolution: 16-bit

• Measuring Range: 0…25 mA

• Absolute Maximum Input: 35 mA

• Input Impedance: 287 Ω

• Accuracy Error: ±0.3 % typical, ±0.35 % full scale max

• Linearity Error: ±2 µA (0…60 °C)

• Common Mode Rejection: -65 dB at 60 Hz, -70 dB at 50 Hz

• Isolation:

  • Channel-to-bus: 1500 V AC for 60 s

  • Channel-to-channel: 500 V AC for 60 s

• Update Time: 15 ms

• Fault Detection: Over-range scale monitoring

Indicators & Diagnostics

• Bus Communication: 1 green LED (active)

• External Fault: 1 red LED (F)

• Input Status: 8 green LEDs

• System Failure: 8 red LEDs (internal channel diagnostics)

Electrical Requirements

• Bus Current: 400 mA

• Power Dissipation: 3.5 W

Certifications & Standards

• Marking: CE

• Certifications: UL, C-Tick, CSA HazLoc, TÜV Rheinland (SIL2), CSA

Application Scenarios

• Safety-critical process control systems

• Industrial automation requiring SIL2 compliance

• Applications with multiple analogue current inputs (0–25 mA)

FAQ

Q: How many analogue inputs does the module support? A: It supports 8 channels with 16-bit resolution.

Q: What is the isolation rating between channels and bus? A: 1500 V AC for 60 seconds between channels and bus.

Q: Is the module certified for hazardous locations? A: Yes, it is CSA HazLoc certified and TÜV Rheinland SIL2 approved.