Honeywell FSC FC-SDI-1624 Safe Digital Input Module

Product Overview

The FC-SDI-1624 (Order Number: 6104012045) is a Honeywell safe digital input module developed for Safety Manager and Experion PKS control platforms. As a member of the Honeywell C-Series I/O family, this module delivers reliable acquisition of discrete field signals in safety-critical control architectures.

Designed for deterministic performance, the module processes 16 independent 24 VDC digital inputs and transfers validated signal states to the safety controller. Its internal diagnostics and electrical isolation support dependable operation in environments subject to noise, vibration, and demanding regulatory requirements.

Functional Scope and Typical Use

The FC-SDI-1624 (6104012045) is intended for monitoring binary field devices such as limit switches, pushbuttons, safety relays, proximity sensors, and interlock contacts. It is commonly applied in Emergency Shutdown (ESD), Fire & Gas (F&G), burner management, and other Safety Instrumented Systems where input integrity is essential.

Each channel continuously evaluates signal presence and wiring condition, enabling early detection of abnormal states such as open circuits or shorted lines. This capability improves fault visibility and supports compliance with IEC 61508 and IEC 61511 safety standards.

System Design Characteristics

The module features a compact, high-density layout that reduces cabinet space while maintaining clear channel separation. Optical isolation between field inputs and the system backplane minimizes the risk of electrical interference propagating into the control system.

Support for redundant system configurations allows the FC-SDI-1624 to be deployed in fault-tolerant architectures, ensuring uninterrupted monitoring even during component failures or maintenance activities.

Technical Specifications

• Model: FC-SDI-1624

• Order / Part Number: 6104012045

• Product Type: Safe Digital Input Module

• Manufacturer: Honeywell

• I/O Family: Honeywell C-Series

• Compatible Systems: Safety Manager, Experion PKS

• Number of Inputs: 16 digital channels

• Rated Input Voltage: 24 VDC nominal

• Input Current: Approx. 8 mA per channel

• Input Modes: Dry contact or voltage input

• Diagnostics: Line fault monitoring, short-circuit detection, open-wire detection

• Isolation: Optical isolation between channels and system bus

• Safety Rating: SIL 2 / SIL 3 capable (system dependent)

• Response Time: < 5 ms typical

• Mounting: DIN rail or system rack (C-Series form factor)

• Operating Temperature: –20 °C to +60 °C

• Certifications: CE, TÜV, UL, CSA, FM

Supply and Warranty Information

• Condition: New

• Shipping Method: DHL or FedEx available

• Shipping Weight: 2 kg (packaging dependent)