Pepperl+Fuchs KCD2-UT2-1 Universal Temperature Converter

USD 159.84

1-channel universal temperature converter with galvanic isolation, accepting RTD, TC, potentiometer, or voltage inputs for 0/4-20mA output. SIL 2 rated.

SKU PEPPERL-FUCHS-KCD2-UT2-1 Category
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Pepperl+Fuchs KCD2-UT2-1 Universal Temperature Converter

Model Identifier KCD2-UT2-1
Official Part Number KCD2-UT2-1
GTIN Standard NA

Technical Overview

1-channel universal temperature converter with galvanic isolation, accepting RTD, TC, potentiometer, or voltage inputs for 0/4-20mA output. SIL 2 rated.

Key Features

  • 1-channel signal conditioner.
  • Thermocouple, RTD, potentiometer or voltage input.
  • Current output 0/4 mA ... 20 mA.
  • Sink or source mode.
  • Configurable by PACTware.
  • Line fault (LFD) and sensor burnout detection.
  • Up to SIL 2 acc. to IEC/EN 61508 / IEC/EN 61511.
  • Galvanic isolation between field circuits and control circuits.

24 V DC supply via terminals or Power Rail.

Technical Specification Matrix

ParameterValue
Signal TypeAnalog input
Safety Integrity Level (SIL)SIL 2
Supply ConnectionTerminals 9+, 10- or power feed module/Power Rail
Rated Voltage (Ur)19 ... 30 V DC
Power Dissipation≤ 0.98 W
Power Consumptionmax. 0.98 W
Programming InterfaceProgramming socket
Input ConnectionTerminals 1, 2, 3, 4
RTD Type SupportPt10, Pt50, Pt100, Pt500, Pt1000 (EN 60751: 1995); Pt10GOST, Pt50GOST, Pt100GOST, Pt500GOST, Pt1000GOST (6651-94); Cu10, Cu50, Cu100 (P50353-92); Ni100 (DIN 43760)
RTD Measuring Currentapprox. 200 µA
RTD Measuring Types2-, 3-, 4-wire connection
Lead Resistance≤ 50 Ω per lead
Output TypeAnalog current output
Current Output Range0 ... 20 mA or 4 ... 20 mA
Fault SignalDownscale 0 or 2 mA, Upscale 21.5 mA (acc. NAMUR NE43)
Source Load0 ... 550 Ω
Open-Circuit Voltage≤ 18 V
Sink Voltage Across Terminals5 ... 30 V
Galvanic Isolation (Input/Other Circuits)Basic insulation according to IEC 61010-1, rated insulation voltage 300 Veff
Galvanic Isolation (Output/Supply, Programming Input)Functional insulation, rated insulation voltage 50 V AC
Display ElementsLEDs
Degree of ProtectionIP20
Physical Weight (kg)0
Dimensions L x W x H (cm)11.43 x 1.27 x 11.94

Industrial Applications

1. Remote Temperature Monitoring in Process Control

In a chemical processing plant, numerous reaction vessels and pipelines require precise temperature monitoring using various RTD or thermocouple sensors. The KCD2-UT2-1 can convert these diverse temperature sensor signals (RTD, Thermocouple) into a standardized 4-20mA current loop, which is then transmitted over long distances to the central control system (DCS or PLC). The galvanic isolation protects the control system from noise and potential ground loops originating in the noisy field environment.

Problem Solved

Converts diverse temperature sensor types to a unified, noise-immune 4-20mA signal for reliable long-distance transmission to control systems, while providing galvanic isolation.

RTDThermocouple4-20mA current loopgalvanic isolationprocess controlDCSPLCtemperature monitoring

2. Machine Health Monitoring in Manufacturing

Critical machinery (e.g., motors, bearings, gearboxes) in a manufacturing facility generates heat. Monitoring their temperature with RTD sensors is crucial for predictive maintenance. The KCD2-UT2-1 modules installed on a DIN rail convert the RTD signals into 4-20mA, feeding into an asset management system. Its SIL 2 rating ensures that temperature excursions triggering safety shutdowns are reliably detected, preventing catastrophic equipment failure and ensuring personnel safety.

Problem Solved

Provides reliable, safety-rated temperature signal conditioning for predictive maintenance and safety interlocks, converting RTD inputs to standard 4-20mA for asset management systems.

RTDmachine healthpredictive maintenance4-20mASIL 2safety shutdownasset managementmanufacturing

3. Building Automation for HVAC Temperature Control

In large commercial buildings, precise temperature control for HVAC systems is vital for energy efficiency and occupant comfort. Distributed temperature sensors (RTDs) throughout the building require conversion to a centralized control system. The KCD2-UT2-1 can convert these RTD inputs into standard 0-20mA or 4-20mA signals, allowing precise monitoring and control of ventilation and heating/cooling units. The ease of configuration via PACTware simplifies commissioning and maintenance.

Problem Solved

Converts multiple RTD temperature inputs to standardized current signals for efficient and centralized HVAC control, enhancing energy management and comfort.

HVACbuilding automationRTD0-20mA4-20mAenergy efficiencyPACTwaretemperature control
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