61735 Honeywell FC-TSAI-1620M SAI-1620m Interface Board

Availability: 20 left in stock

Product Overview The FC-TSAI-1620M (Part Numbers 61735 / 50624) is an authoritative 16-channel Field Termination Assembly (FTA) engineered for the Honeywell Safety Manager and Experion...

SKU: TSAI-1620M

Manufacturer: Honeywell
Product No.: TSAI-1620M
Product Type: Field Termination Assembly
Product Origin: USA
Payment:T/T, Western Union
Weight: 450g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The FC-TSAI-1620M (Part Numbers 61735 / 50624) is an authoritative 16-channel Field Termination Assembly (FTA) engineered for the Honeywell Safety Manager and Experion PKS platforms. This module is a mechanical necessity for interfacing field instrumentation—such as pressure, flow, and temperature transmitters—with the SAI-1620m analog input module. It provides precision signal conditioning, converting 0–25 mA field signals into a 0–4 Vdc output with a trustworthy accuracy of 0.1%. Designed for mission-critical safety environments, the FC-TSAI-1620M incorporates individual channel protection and robust termination to ensure signal integrity in refineries, chemical plants, and power generation facilities.

Detailed Technical Specifications

Attribute	Details
Manufacturer	Honeywell
Model Number	FC-TSAI-1620M
Part Numbers	61735 / 50624
Product Type	Analog Input Field Termination Assembly (FTA)
Channel Density	16 Channels (2 groups of 8 with common 0 V)
External Power	30 VDC (Nominal)
Input Current Range	0–25 mA
Input Resistance	250 Ω (±1%)
Output to Module	0–4 VDC (0.1% Accuracy)
Passive Transmitter Output	Resistance: 270 Ω (±5%); Current: <120 mA @ 30 Vdc
Fuse Protection	315 mAT slow-acting (5 × 20 mm)
Termination Terminals	Screw terminals, Max 2.5 mm² (AWG 14)
Tightening Torque	0.5 Nm (0.37 ft-lb)
Dimensions	210 × 70 × 60 mm (8.26 × 2.76 × 2.36 in)
Mounting Support	TS32 / TS35 × 7.5 DIN Rails (Rail length: 211 mm)

Engineering and Operational Guidelines

Signal Conditioning Expertise: The FC-TSAI-1620M utilizes high-precision 250 Ω resistors to provide the authoritative conversion of current loops into voltage signals. This ensures that the Safety Manager logic solver receives a linear, accurate representation of the process variable.
Passive Transmitter Support: The FTA is designed to drive passive transmitters. Each channel provides a current-limited output (<120 mA), which is a mechanical necessity for preventing field-side faults from overloading the system's 30 Vdc power distribution.
Safety Maintenance: Each board is equipped with 315 mAT slow-acting fuses. In the event of an overcurrent condition on the field loop, the fuse will blow to protect the internal circuitry, facilitating a trustworthy "fail-safe" state for that specific channel.
Wiring and Torque Management: For optimal signal integrity, ensure wires are stripped to 7 mm and tightened to the specified 0.5 Nm torque. Using AWG 14 (2.5 mm²) cabling provides the required mechanical strength for long-term vibration resistance in industrial cabinets.

Technical FAQ

What is the role of the 2 groups of 8 channels on the FC-TSAI-1620M?

The 16 channels are divided into two isolated groups. Each group shares a common 0 V reference, which simplifies wiring for large instrument banks while providing a level of physical separation between signal clusters.

Can this FTA be used with 4-20 mA active transmitters?

Yes. While it provides specific power outputs for passive devices, the 61735 / 50624 assembly handles the standard 0-25 mA range, easily accommodating the 4-20 mA signals typical of active field transmitters.

How does the 0.1% accuracy affect safety loops?

High accuracy is authoritative for Safety Instrumented Functions (SIF). The 0.1% precision ensures that trip setpoints (e.g., high-pressure shutdown) are triggered exactly when process conditions dictate, reducing the risk of spurious trips or unsafe delays.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.