Description
The Honeywell FC-SDI-1624 (FCSDI1624) is a high-integrity, 16-channel safe digital input module engineered specifically for Honeywell’s Fail-Safe Control (FSC) and Safety Manager systems. Certified for safety-critical and high-demand applications up to SIL 3, it reliably interfaces vital field devices—such as emergency shutdown pushbuttons, fire and gas detectors, and safety limit switches—with the central safety logic solver.
📊 Product Datasheet Parameters
- 🏷️ Product Type & Model: Safe Digital Input Module (FC-SDI-1624)
- ⚙️ System Application: Honeywell Safety Manager & Fail-Safe Control (FSC) Architecture
- 🔌 Number of Input Channels: 16 independent fail-safe digital input channels
- ⚡ Nominal Input Voltage: 24 V DC (Operating Range: 20.4 V DC to 28.8 V DC)
- 🟢 HIGH State Threshold: \ge 15 V DC
- 🔴 LOW State Threshold: \le 9 V DC
- ⏱️ Input Response Time: \le 10 ms
- 🛡️ Safety Integrity Rating: SIL 3 Capable (compliant with IEC 61508)
- ⚡ Current Consumption: 110 mA backplane power / ~7 mA per active channel
- 📐 Physical Dimensions: Standard modular rack profile (approx. 30.8 cm x 12.1 cm x 5.5 cm)
- ⚖️ Product Net Weight: Approximately 0.55 kg
- 🌍 Country of Origin: United States
- 🌡️ Operating Temperature Range: -40°C to +70°C (-40°F to +158°F) industrial environmental threshold
📖 Product Instructions for Use
- Power Isolation: Ensure all primary rack power sources and field loop supplies are completely turned off and locked out before installing or extracting the FC-SDI-1624 module to prevent backplane bus errors.
- Electrostatic Precautions: Wear a properly grounded anti-static wrist strap when unboxing and handling the circuit board to protect delicate internal microprocessors from electrostatic discharge.
- Chassis Insertion: Carefully align the module card with the designated Safety Manager system rack slots and press evenly until the backplane connectors and locking mechanisms fully engage.
- Diagnostic & Loop Verification: Restore system power and verify through the safety configuration and diagnostic software that internal self-tests pass and input loops read correctly.
❓ Common Questions & Answers (Q&A)
- Q: What is the primary function of the Honeywell FC-SDI-1624 module?
A: It serves as a SIL 3-certified safety input card designed to acquire discrete status signals from critical safety devices and feed verified data to the Safety Manager system.
- Q: What does a ‘fail-to-safe’ input stage design signify?
A: It means that if an internal component failure occurs, the module defaults to a safe, de-energized state at the processor level, preventing hazardous undetected failures.
- Q: Does this module support line monitoring for field wiring?
A: Yes, it features continuous internal diagnostics to detect field faults such as short circuits and open circuits, ensuring compromised wiring is flagged instantly.
🏆 Recommended Honeywell Series & Models
- Honeywell Safety Manager Enhanced Controller
- Honeywell FSC (Fail Safe Controller) Central Processing Units
- Honeywell FC-SDO-0524 Safe Digital Output Module
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- Honeywell Experion C300 Controller Module
- Honeywell Safety Manager I/O Expansion Racks
- Honeywell 10201/2/1 Fail-safe Digital Output Module
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- Honeywell Series C Fail-Safe I/O Modules




