FC-SDIL-1608 | Honeywell Safe Line-Monitored Digital Input Module

Product Overview

The Honeywell FC-SDIL-1608 is a Safe Line-Monitored Digital Input Module with earth fault monitoring for Honeywell Safety Manager systems. It provides 16 channels for loop-monitored loops or NAMUR proximity switch status signals, with integrated earth fault detection across all channels. Certified for SIL 3 applications per IEC 61508, this module is ideal for safety-critical environments requiring comprehensive wiring integrity monitoring.

Key Features

• 16 Loop-Monitored Channels: Supports loop monitoring and NAMUR proximity switch signals (DIN 19234)
• Earth Fault Monitoring: Detects earth faults within all 16 loops for enhanced safety
• On-Board DC/DC Converter: Common power supply for all 16 channels
• Status LEDs: Channel, loop, and module diagnostic indicators on front panel
• SIL 3 Certified: Compliant with IEC 61508 for highest safety integrity
• Conformal Coating: Protected against moisture and corrosive environments

Technical Specifications

• Model: FC-SDIL-1608
• Type: Safe Line-Monitored Digital Input Module with Earth Fault Monitor
• Channels: 16
• Input Type: DIN/NAMUR (DIN 19234)
• Switch Level: 1.4 – 1.9 mA
• Hysteresis: 0.2 mA ± 0.05 mA
• Input Filter: First-order low pass, 100 Hz
• Field Wire Resistance: Max. 50 Ω
• 8V Loop Supply: 7.9 – 8.7 V output, 170 mA short-circuit proof
• Max Load Capacitance: 100 nF
• Earth Fault Monitor Input Resistance: Typically 0.5 MΩ
• Test Current: Typically 0.5 mA
• Field Fault Voltage: Max. 250 VAC
• Power Requirements: 5 VDC: 160 mA; 24 VDC: 110 mA
• Space Requirements: 4 TE × 3 HE (4 HP × 3U)
• Approvals: CE, TÜV, UL, CSA, FM

Installation Guide

1. Signal Converter: Install BN-1608 or BSN-1608 signal converter on programming connector (Px) at back of IO backplane
2. Module Insertion: Insert FC-SDIL-1608 into chassis slot; secure with screws
3. Flat Cable: Connect to horizontal IO bus (IOBUS-HBS or IOBUS-HBR)
4. Field Wiring: Connect NAMUR proximity switches or loop-monitored devices to compatible FTA
5. Earth Connection: Verify proper earth connection monitoring setup

FAQ

Q: What is the difference between SDIL-1608 and SDI-1624?
A: SDIL-1608 includes line monitoring and earth fault detection, while SDI-1624 is a standard digital input without these features. SDIL-1608 is used with NAMUR devices; SDI-1624 with standard 24 VDC inputs.

Q: Is the BN-1608 signal converter required?
A: Yes, when using proximity switch signals, the BN-1608 (or BSN-1608) converter must be installed on the backplane programming connector.

Q: Can this module detect broken wires?
A: Yes, the line monitoring function detects open circuits, short circuits, and earth faults in the field wiring.

Selection Tips

• Use FC-SDIL-1608 for NAMUR proximity switch applications requiring line monitoring
• Requires BN-1608/BSN-1608 signal converter—verify availability
• For standard 24 VDC digital inputs without monitoring, use FC-SDI-1624
• Ensure SIL 3 loop calculations account for all components in the safety function