Honeywell FC-SAO-0220M | Safe Analog Output Module 2-Channel CC

The Honeywell FC-SAO-0220M is a high-integrity safety analog output module designed for use within the Safety Manager and SM systems. This module provides two channels of isolated 0(4)-20mA analog outputs, specifically engineered for safety-related applications. The “CC” designation indicates that the module features conformal coating, providing superior protection against harsh, corrosive industrial environments, ensuring long-term reliability in critical safety loops.

Product Specifications and Datasheet

  • Model Number: FC-SAO-0220M

  • Output Channels: 2 channels, fully isolated

  • Signal Range: 0-20 mA or 4-20 mA (Configurable)

  • Safety Integrity Level: Suitable for SIL 3 applications

  • Coating: Conformal Coating (CC) for harsh environments

  • Output Impedance: > 250 kΩ (when inactive)

  • Load Resistance: Maximum 600 Ω at 20 mA

  • Dimensions: 145 mm x 30 mm x 140 mm

  • Weight: Approximately 0.35 kg

  • Country of Origin: Netherlands / USA

Application Areas

  • Process Safety: Controlling critical control valves in emergency shutdown (ESD) systems.

  • Fire and Gas Systems: Modulating dampers or signaling devices in hazardous areas.

  • Petrochemical: Precise control of safety-critical actuators in refining processes.

  • Water Treatment: Managing chemical dosing pumps where safety-rated precision is required.

HONEYWELL FC-SAO-0220M SAFE AO MODULE 0(4)-20MA 2CH CC

Product Instructions for Use

  1. Module Installation: Insert the FC-SAO-0220M into the designated slot of the Safety Manager I/O chassis. Ensure the module is fully seated and the retention screws are hand-tightened to maintain a secure electrical connection.

  2. Field Wiring: Connect the field actuators using high-quality shielded cables. Ensure the loop resistance does not exceed the 600 Ω limit to maintain signal accuracy.

  3. Configuration: Utilize the Honeywell Safety Builder software to define the output range (0-20mA or 4-20mA) and set the safety-state parameters (e.g., Fail-to-Low or Fail-to-High).

  4. Maintenance: Monitor the system diagnostic logs regularly. The module performs continuous internal self-tests; any “Channel Fault” or “Module Fail” LED indication should be investigated immediately via the engineering station.

Q&A: Frequently Asked Questions

Q1: What does the “CC” version offer over the standard module? A1: The Conformal Coating (CC) provides a protective chemical film that shields the electronics from moisture, dust, and corrosive gases (like H2S), making it ideal for offshore or chemical plant use.

Q2: Is this module hot-swappable? A2: Yes, the FC-SAO-0220M can be replaced while the system is under power, provided the system is configured in a redundant setup to maintain the safety function during the swap.

Q3: Can it drive a 4-20mA positioner? A3: Absolutely. It is specifically designed to drive 4-20mA safety-rated valve positioners and other analog actuators in a high-integrity control loop.

Recommended Similar Models

  • FC-SAI-1620M: 16-channel safe analog input module for monitoring field sensors.

  • FC-SDI-1624: 16-channel safe digital input module for switch and contact monitoring.

  • FC-SDO-0824: 8-channel safe digital output module for driving solenoids and relays.

  • FC-SAO-0220: The standard non-conformally coated version of this analog output module.

  • FC-TSAI-1620M: Termination assembly module often used in conjunction with safe analog inputs.

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