Honeywell FC-TSAO-0220 Safe Analog Output Module

Precise Analog Control for Safety Instrumented Systems

The Honeywell FC-TSAO-0220 delivers two independent fail‑safe analog output channels for critical process control applications . This module generates precise 0–20 mA or 4–20 mA signals to drive control valves, actuators, and positioners in safety loops . It integrates seamlessly with Honeywell Safety Manager, FSC, and Experion PKS platforms . Moreover, the FC-TSAO-0220 supports HART communication on each channel for advanced diagnostics . Its conformal coating ensures reliable operation even in corrosive or humid industrial environments .

Field Termination and Connectivity

The FC-TSAO-0220 functions as a field termination assembly (FTA) that interfaces between the system interconnection cable SICC-0001/Lx and external field wiring . Screw terminals accept wires up to 2.5 mm² (AWG 14) with a strip length of 7 mm . This module mounts directly onto TS32 or TS35 DIN EN rails, requiring only 51 mm of rail length . Furthermore, you can connect up to eight FC-TSAO-0220 modules in series to utilize all 16 channels of a HART multiplexer . Special connectors also support standard cables from MTL and Pepperl+Fuchs .

Technical Specifications

Parameter	Specification
Model Number	FC-TSAO-0220
Manufacturer	Honeywell
Product Type	Safe Analog Output Module / FTA
Output Channels	2 independent analog outputs
Signal Range	Configurable 0–20 mA or 4–20 mA
Maximum Voltage	40 V DC (per IEC 1010, overvoltage category 3)
Maximum Current	25 mA per channel
Accuracy	±0.1 % of span at 25 °C; ±0.2 % across full temperature range
Resolution	12‑bit digital‑to‑analog conversion
Load Resistance	Up to 600 Ω (4–20 mA); Up to 1200 Ω (0–20 mA)
Response Time	< 10 ms typical
Dimensions (L×W×H)	50 × 70 × 48 mm (1.97 × 2.76 × 1.89 in)
Used Rail Length	51 mm (2.01 in)
Weight	0.06 kg (module only)
Operating Temperature	–20 °C to +70 °C
Terminal Wire Size	Max 2.5 mm² (AWG 14)
Certifications	CE, UL, CSA, TÜV, FM; SIL2/SIL3 compliant
Mounting	DIN EN rail TS32 / TS35 × 7.5

Diagnostics and Safety Features

The FC-TSAO-0220 incorporates comprehensive diagnostics including open‑circuit, short‑circuit, and power failure detection . A built‑in read‑back function compares the output signal with command values in real time to ensure control accuracy . Each channel features independent electrical isolation to prevent interference between channels . The module also supports forced disabling control (SMOD) for safe shutdown during emergencies . Consequently, engineers rely on this module for demanding safety instrumented systems in oil and gas, chemical processing, and power generation facilities .