Honeywell FC-SDO-1624 Safe Digital Output Module

This safety-rated digital output module provides sixteen channels for driving critical shutdown devices. The FC-SDO-1624 delivers SIL 3 certified performance for Honeywell Safety Manager and FSC platforms. Its dual-channel architecture ensures fail-safe operation in emergency shutdown and fire and gas systems. This unit performs comprehensive self-tests every cycle to guarantee output integrity.

Output Characteristics and Safety Ratings

The FC-SDO-1624 operates on a nominal 24V DC supply with redundant output drivers per channel. Each output delivers up to 0.5 amps continuously and supports inductive loads with built-in suppression. The module employs dual solid-state switches in series for each output path. Additionally, the forced-guided relay outputs provide a mechanical indication of the actual switch state.

Parameter	Specification
Model Number	FC-SDO-1624
Product Type	Safe Digital Output Module
Number of Channels	16 safety-rated outputs
Nominal Voltage	24V DC (18-32V operating range)
Output Current	0.5A continuous per channel
Switching Technology	Dual series MOSFETs
Safety Certification	SIL 3 (IEC 61508), PL e (ISO 13849)
Diagnostic Coverage	>99% for internal faults
Response Time	<10ms typical
Test Pulse Interval	Adjustable from 1ms to 50ms
Status Indicators	Red/Green LEDs per channel

Physical Dimensions and Mounting Details

The FC-SDO-1624 measures 170mm wide, 130mm high, and 85mm deep. This safety module weighs approximately 1.1 kilograms and mounts directly onto standard DIN rails. The front panel provides a removable spring-clamp connector for all field wiring terminations. Each channel pair clearly marks its dual output terminals for proper connection. Furthermore, the housing includes a locking mechanism that secures the module against vibration.

Energy Storage and Power Consumption

This safety module draws a maximum of 7.5 watts from the system backplane. The FC-SDO-1624 does not incorporate batteries or supercapacitors for energy storage. Instead, the module relies entirely on the Safety Manager backplane for its power supply. The efficient thermal design uses natural convection cooling for reliable operation. Consequently, this approach eliminates battery replacement while ensuring fail-safe performance.

System Integration and Diagnostic Features

The FC-SDO-1624 integrates seamlessly with Honeywell Safety Manager and FSC logic solvers. You can configure this module using Safety Builder engineering software for intuitive setup. The internal diagnostics continuously verify output switching integrity and communication health. Therefore, this safe digital output module provides dependable actuation for critical safety instrumented functions.