Honeywell FC-SAI-1620M Safety Analog Input Module

Product Introduction

The FC-SAI-1620M is a safe high-density analog input module from the Honeywell Safety Manager system. This module accepts 0(4)-20 mA current inputs across 16 channels. Specifically, it converts field signals with a 12-bit A/D converter for safety-critical monitoring.

Furthermore, the module operates from a 24 VDC supply and mounts directly as a card. Its compact form factor allows high channel density inside the Safety Manager chassis. Besides, the design targets safety instrumented functions that demand reliable analog acquisition.

Additionally, the Honeywell FC-SAI-1620M achieves module inaccuracy below 0.25%. Crosstalk between channels exceeds 60 dB, which protects signal integrity in dense installations. Moreover, the input resistance above 1 MΩ minimizes loading on field loops.

Technical Specifications

The FC-SAI-1620M provides 16 analog input channels. Each channel accepts a 0(4)-20 mA input signal with an input range of 0-4.1 V. The A/D converter offers 12-bit resolution with inaccuracy of ±1 LSB.

Key electrical parameters include:

• Number of Input Channels: 16

• Input Range: 0-4.1 V

• Input Resistance: >1 MΩ

• Maximum Load Capacitance: 100 nF

• A/D Converter: 12-bit

• A/D Converter Inaccuracy: ±1 LSB

• Module Inaccuracy: <0.25%

• Absolute Max Input Signal: ±36 V DC

• Crosstalk Between Channels: >60 dB

• Power Requirements: 5 V DC, 35 mA; 24 V DC, 35 mA

Additionally, the module provides an external voltage read-back function. This read-back covers a 0-4.1 V range with a typical input resistance of 1 MΩ. Furthermore, the low power draw of 35 mA per rail supports dense rack configurations.

Key Coding and Connector Details

The Honeywell FC-SAI-1620M uses key coding to prevent incorrect insertion. Specifically, the module connector code uses holes A5 and C25. Meanwhile, the chassis connector code uses large pins A5 and C25.

This coding scheme ensures that only the correct module type seats into a given slot. Therefore, maintenance personnel avoid mismating during replacement. Besides, the card-mount format speeds up installation and swap-out in the field.

Installation Guide

First, verify that the Safety Manager chassis power is off before handling the module. Next, check the key coding positions A5 and C25 on both the module and chassis connectors. After that, align the card with the slot guides and slide it into position.

Then, press the module firmly to seat the connector pins. Afterward, secure the card mount fasteners according to site procedures. For field wiring, connect the 0(4)-20 mA loop leads to the designated terminals.

Finally, power up the chassis and verify channel readings through the safety system. The 12-bit conversion and <0.25% module accuracy support dependable measurement. Moreover, monitor diagnostics to confirm correct channel operation after commissioning.

Packaging List

• 1 × Honeywell FC-SAI-1620M Safety Analog Input Module

• 1 × Anti-static protective bag

• 1 × Carton packaging

FAQ

Q1: How many input channels does the FC-SAI-1620M provide?
A: The module offers 16 analog input channels. Each channel accepts 0(4)-20 mA signals for safety-related measurement.

Q2: What is the A/D resolution of this module?
A: The FC-SAI-1620M uses a 12-bit A/D converter with ±1 LSB inaccuracy. Module inaccuracy stays below 0.25%.

Q3: What is the absolute maximum input signal?
A: The absolute maximum input signal is ±36 V DC. This protection limit helps prevent damage from field transients.

Q4: What are the power requirements of the module?
A: The module draws 35 mA from the 5 V DC rail and 35 mA from the 24 V DC rail. This low consumption supports dense rack layouts.

Q5: How is the module shipped?
A: We ship via Fedex, UPS, and DHL. Each unit arrives in anti-static packaging inside a protective carton.