FS-16DI-RL Honeywell 16-Channel Digital Input Relay Board
Manufacturer: HONEYWELL
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Part Number: FS-16DI-RL
Condition：New with Original Package
Product Type: Digital Input Modules
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Country of Origin: Japan
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Honeywell FS-16DI-RL functions as a robust interface between field-level digital signals and industrial control processors. This 16-channel relay input terminal board captures contact closures from switches, sensors, and safety interlocks, converting them into isolated logic signals for the controller. Engineered for high-integrity environments, the FS-16DI-RL provides essential galvanic isolation to protect sensitive control electronics from high-voltage transients and field-side electrical noise.
Condition: 100% Brand New, Original Factory Stock.
Technical Specifications
| Feature | Specification Details |
| Model Number | FS-16DI-RL |
| Input Channels | 16 Isolated Channels |
| Nominal Input Voltage | 24V DC (Range: 10–30V DC) |
| Contact Rating | 250V AC / 2A (Resistive Load) |
| Isolation Rating | 1500V AC (Channel-to-Channel and Ground) |
| Response Time | 5 ms (ON) / 5 ms (OFF) |
| Terminal Connection | Screw Blocks (12–24 AWG Wire Gauge) |
| Dimensions | 200 × 120 × 40 mm |
| Mounting | 35mm DIN Rail or Panel Mount |
| Indicators | Per-channel Status LEDs |
| Operating Temp | –20°C to +60°C |
Engineering Advantages
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Superior Signal Isolation: The FS-16DI-RL utilizes 1500V AC rated isolation between channels. This architecture prevents ground loops and ensures that a massive electrical fault on one field sensor does not propagate through the board to damage the primary DCS or PLC hardware.
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Real-Time Diagnostics: Each of the 16 channels features a dedicated LED status indicator. This allows maintenance personnel to verify field signal presence at a glance, drastically reducing troubleshooting time during system commissioning or unexpected downtime.
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High-Voltage Field Interface: While the board operates on 24V DC logic, the relay contacts support up to 250V AC. This allows the system to interface directly with high-voltage industrial circuits without requiring additional intermediate relays, saving cabinet space and reducing wiring complexity.
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Fast Switching Performance: With a response time of just 5 ms, the board captures rapid state changes in critical sensors. This speed ensures that safety-related logic or high-speed counting functions receive data with minimal latency.
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Rugged Industrial Terminal Blocks: The board utilizes heavy-duty screw terminals that accept wire gauges from 12 to 24 AWG. This flexibility supports both thin signal wires and thicker power cables, ensuring secure, vibration-resistant connections in harsh operating environments.
FAQs
Does the FS-16DI-RL support both AC and DC field signals?
The field-side relay contacts handle up to 250V AC for switching. However, the internal logic and board power require a nominal 24V DC supply. Always verify that your field signal voltage aligns with the specific relay contact ratings provided in the technical manual.
How do I install the board in a crowded control cabinet?
The FS-16DI-RL supports both standard 35mm DIN rail mounting for rapid clicks-in-place installation and direct panel mounting for high-vibration applications. Its 40mm slim profile helps engineers maximize I/O density in tight spaces.
What happens if a field sensor experiences an inrush current?
Each channel handles a 1A inrush current for up to 10 ms. This protects the board when interfacing with devices that exhibit high initial capacitance or inductive loads, ensuring the relay contacts do not weld or degrade prematurely.
Is the FS-16DI-RL compatible with all Honeywell safety systems?
The "FS" prefix indicates Fail-Safe compatibility. This board specifically integrates with Honeywell’s high-availability control platforms. Please cross-reference your specific I/O module carrier or baseplate to ensure mechanical and electrical compatibility.