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Technical specifications for FC-UGAI01
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Manufacturer:Honeywell
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Product Category:DCS Systems
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Spare Part Number:FC-UGAI01
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Weight:0.7 kg
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Tariff Code:8537101190
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Analog channels:1
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Signal range:4-20 mA
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Supply:24 V DC
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Rated supply current:55 mA at 24 V DC
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Power dissipation:1 W at 24 V DC / 20 mA loop
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Power/DCS-to-field isolation:1500 V AC
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Transfer accuracy at 20 deg C:+/-20 microamps
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Field voltage at 20 mA:16 V
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Short-circuit current:23.5 mA
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Open-wire current:<150 microamps
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HART connections:Two-/three-wire current-source mode
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Safe-side connector:37-pin DSUB on CC-UGIA01
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Protection:IP20
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Operating temperature:-40 to +70 deg C
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Humidity:5-95%; non-condensing
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Functional safety capability:SIL 2, IEC 61508
Information
Overview
Downloads
Applications / Compatibility
Product Precautions
- Honeywell FC-UGAI01 separates hazardous-area field circuits from the safe-side interface while transferring a current measurement into the safety system. The selected terminal arrangement determines whether a transmitter is connected as a current source or current sink.
Signal transfer: One 4-20 mA channel; HART with specified source-mode wiring
Isolation: Three-way separation; power/DCS-to-field rating 1500 V AC
Field interface: Two- or three-wire source mode; two-/four-wire sink mode
Isolation: Three-way separation; power/DCS-to-field rating 1500 V AC
Field interface: Two- or three-wire source mode; two-/four-wire sink mode
FC-UGAI01 transfers one 4-20 mA input with three-way galvanic isolation. Power/DCS-to-field isolation is rated 1500 V AC. With a 24 V DC supply, rated current is 55 mA and dissipation is 1 W at a 20 mA loop current. Transfer accuracy at 20 deg C is +/-20 microamps, with ambient-temperature influence considered separately.
The barrier uses mechanical keys and a screwless backplane connection. CC-UGIA01 provides a 37-pin DSUB safe-side interface and three-tier field terminals. A(+)/B(-) supports a two-wire current source and A(+)/B(-)/C supports a three-wire source, both with HART; B(-)/C supports a two- or four-wire current sink for 4-20 mA transfer.
Available field voltage is 16 V at 20 mA, short-circuit current is 23.5 mA and open-wire current is below 150 microamps. The module operates from -40 to +70 deg C with 5-95% non-condensing humidity. SIL 2 capability and IP20 protection do not replace the complete safety-loop assessment, hazardous-area design or the required cabinet protection.
The barrier uses mechanical keys and a screwless backplane connection. CC-UGIA01 provides a 37-pin DSUB safe-side interface and three-tier field terminals. A(+)/B(-) supports a two-wire current source and A(+)/B(-)/C supports a three-wire source, both with HART; B(-)/C supports a two- or four-wire current sink for 4-20 mA transfer.
Available field voltage is 16 V at 20 mA, short-circuit current is 23.5 mA and open-wire current is below 150 microamps. The module operates from -40 to +70 deg C with 5-95% non-condensing humidity. SIL 2 capability and IP20 protection do not replace the complete safety-loop assessment, hazardous-area design or the required cabinet protection.
Controller platform reference: Honeywell Universal Marshalling for Safety. Match barrier, backplane and field circuit.
Universal Marshalling Solution for Safety, EP-DOCX-SCA-SMSC-100 Release 310 Version 2.0, March 2021: preserved manufacturer technical information applicable to this configuration. The separate installation guide covers keyed backplane installation, transmitter terminal selection, loop headroom and fault-transfer tests.
FC-UGAI01 Official Technical Reference Excerpt
Universal Marshalling Solution for Safety, EP-DOCX-SCA-SMSC-100 Release 310 Version 2.0, March 2021: preserved manufacturer technical information applicable to this configuration. PDF · 7 pages.FC-UGAI01 Installation & Verification Guide
Apter Power field guide covering keyed backplane installation, transmitter terminal selection, loop headroom and fault-transfer tests. PDF · 5 pages.
Original manufacturer pages retain their technical context. Use the Apter Power guide with the applicable manufacturer instructions and approved installation design.
System and supply context: FC-UGAI01 is the single-channel barrier within a compatible CC-UGIA01 marshalling assembly. Backplane, system interface and field transmitter must be selected together.
Application scope: Use the barrier for compatible analog input loops requiring galvanic isolation and the approved hazardous-area interface. Safety capability and entity parameters require a complete loop assessment.
Application scope: Use the barrier for compatible analog input loops requiring galvanic isolation and the approved hazardous-area interface. Safety capability and entity parameters require a complete loop assessment.
Two-wire transmitter input
Transfer a 4-20 mA source signal with HART through the A(+)/B(-) field connection.Three-wire source interface
Use A(+)/B(-)/C where the approved transmitter circuit requires three-wire current-source wiring.Externally powered current sink
Use the B(-)/C arrangement for the specified two- or four-wire 4-20 mA sink connection.Safety marshalling assembly
Integrate the keyed barrier with the supported backplane and safety-input path.
Prepare Honeywell FC-UGAI01 for its configured installation using these checks.
Identify the barrier and backplane
Match FC-UGAI01 with the intended CC-UGIA01 position and mechanical keying.
Validate the hazardous-area loop
Use the applicable entity parameters and approved field-circuit design.
Select the signal mode
Keep source and sink terminal arrangements distinct; HART is not specified for every mode.
Check transmitter headroom
Assess the 16 V available at 20 mA against device and cable requirements.
Prove fault transfer
Test open-wire recognition at the actual receiving channel under controlled conditions.
Protect the installed assembly
IP20 does not provide weatherproof protection; use the required cabinet and environmental controls.
Alternative Names
FC-UGAI01
Honeywell FC-UGAI01
FC-UGAI01 Analog Input Barrier
Technical notes
Channel boundary: FC-UGAI01 provides one isolated analog input; a multi-position backplane does not change that count.
Temperature influence: Accuracy at 20 deg C and ambient-temperature influence are separate specifications.
HART boundary: Use the supported source-mode terminals when HART communication is required.
FAQ View All FAQ
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How many analog loops does Honeywell FC-UGAI01 isolate?One. The CC-UGIA01 backplane can accommodate multiple barriers, but its assembly capacity must not be treated as the channel count of a single FC-UGAI01.
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Which FC-UGAI01 terminal arrangements support HART?A(+)/B(-) for a two-wire current source and A(+)/B(-)/C for a three-wire current source support 4-20 mA with HART. The B(-)/C current-sink arrangement is specified for 4-20 mA transfer.
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What transmitter voltage is available through FC-UGAI01 at full loop current?The field side provides 16 V at 20 mA. Compare the transmitter minimum voltage and the circuit voltage drops with this available level.
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What isolation boundary is rated 1500 V AC on FC-UGAI01?The rating applies between power/DCS and the field side. It is an isolation specification, not the permissible field operating voltage.
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How does an open field wire appear through FC-UGAI01?The barrier supports open-wire fault transparency and specifies an open-wire current below 150 microamps. Verify the receiving input fault threshold and end-to-end diagnostic response.
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Why does the FC-UGAI01 accuracy statement include a temperature condition?The +/-20 microamp transfer accuracy is specified at 20 deg C. Ambient influence is below 2 microamps per deg C from -30 to +70 deg C and below 6 microamps per deg C from -40 to -30 deg C.
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Does FC-UGAI01 connect directly to a loose 37-pin plug?Its screwless keyed module connection mates with the CC-UGIA01 backplane. The 37-pin DSUB belongs to the backplane safe-side interface; field wiring uses its three-tier terminal blocks.
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Does installing FC-UGAI01 alone establish a SIL 2 safety function?No. SIL 2 describes the barrier capability. The complete loop, field device, input system, wiring, proof-test arrangements and application design must satisfy the required safety function.
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