Pepperl+Fuchs KFD2-UFC-1.D Universal Frequency Converter
The Pepperl+Fuchs KFD2-UFC-1.D is a universal frequency converter (signal conditioner) designed for industrial automation and process control applications. It converts frequency signals from NAMUR sensors, 2/3-wire sensors, or dry contacts into a standard analog output (0/4-20 mA) and provides relay/transistor switching outputs. Certified for SIL 2 per IEC 61508, it is suitable for safety-related applications in hazardous areas.
Technical Specifications
Product Type: 1-channel universal frequency converter
Input Frequency Range: 1 mHz to 12 kHz (0.001 to 12000 Hz)
Input Types: NAMUR sensors (EN 60947-5-6), 2-wire/3-wire sensors, mechanical dry contacts
Open Circuit Voltage/Short-circuit Current: 22 V / 40 mA
Input Resistance: 4.7 kΩ
Switching Point/Hysteresis: Logic 1: >2.5 mA; Logic 0:<1.9 mA
Minimum Pulse Duration: >50 μs
Line Fault Detection: Breakage I ≤0.15 mA; Short-circuit I >4 mA
Output I & II: Relay outputs (250 V AC / 2 A, cos φ ≥0.7; 40 V DC / 2 A)
Output III: Electronic transistor output, passive (40 V DC, 50 mA)
Output IV: Analog output (0/4-20 mA, max load 650 Ω)
Resolution (Analog):<10 μA
Accuracy (Analog):<20 μA
Measuring Time:<100 ms
Accuracy (Frequency): 0.1% of measured value (≥0.001 Hz)
Rated Voltage: 20-30 V DC (Power Rail compatible)
Rated Current: approx. 100 mA
Power Dissipation/Consumption: ≤2 W / 2.2 W
Operating Temperature: -20°C to +50°C
Dimensions: 40 mm × 119 mm × 115 mm (W×H×D)
Safety Integrity Level: SIL 2 acc. to IEC 61508
Certifications: CE, UL, ATEX, IECEx (Zone 2)
Configuration and Functions
The KFD2-UFC-1.D features flexible configuration via PC or control panel. Each output can be individually parameterized with trip values (high/low alarms), serially switched output modes, pulse divider functions, or error message outputs. The device includes start-up override (1 to 1000 seconds), restart inhibit, debounce filter, and comprehensive line fault detection (LFD) for sensor breakage and short-circuit conditions. The analog output (0/4-20 mA) is linearly proportional to the input frequency and supports NAMUR NE43 fault signaling (downscale ≤3.6 mA, upscale ≥21.5 mA).
Application Domains
The KFD2-UFC-1.D is ideal for frequency monitoring of rotating machinery (speed monitoring of conveyors, pumps, fans), flow measurement (turbine flowmeters), counting applications, and position sensing. Its SIL 2 certification makes it suitable for safety instrumented systems (SIS) requiring reliable frequency-to-analog conversion. The device is compatible with Pepperl+Fuchs Power Rail for simplified power distribution and is widely used in chemical, petrochemical, oil & gas, and power generation industries.
- User name Member Level Quantity Specification Purchase Date
- Satisfaction ：
-
-
KUKA KR C4 extended assembly and debugging -
KUKA KR C4 compact assembly and debugging -
KUKA Sunrise Cabinet Med Medical Collaborative Robot Special Control Cabinet -
KUKA Sunrise Cabinet Next Generation Small Control Cabinet -
KUKA KR C4 Smallsize-2 family's smallest control cabinet -
KUKA KR C4 Midsize Fault Diagnosis -
KUKA KR C4 extended is a high-power multi axis control cabinet -
Troubleshooting and Maintenance of KUKA KR C4 Control Cabinet -
Troubleshooting and Maintenance of KUKA KR C4 Compact Control Cabinet -
KUKA KR15 DELTA-2 V2 Robot Installation and Debugging -
KUKA TITAN-2 Ultra Assembly and Maintenance Guide -
KUKA KR SCARA-2 CS Assembly, Debugging, and Operation Guide -
Troubleshooting KUKA SCARA X -
Troubleshooting of KUKA KR FORTEC-2 ultra -
Troubleshooting of KUKA KR FORTEC-2 -
Troubleshooting KUKA KR 1000 Titan -
Troubleshooting of KUKA KR 600 FORTEC -
KUKA KR 500 MT FORTEC Maintenance and Inspection -
KUKA KR 360 FORTEC Inspection and Maintenance Guide -
Troubleshooting KUKA Sunrise Cabinet Med -
KUKA KR SCARA HO Assembly and Maintenance -
KUKA QUANTEC-2 PA maintenance troubleshooting -
KUKA QUANTEC-2 K/P Maintenance Troubleshooting Guide -
KUKA QUANTEC-2 HO Maintenance Guide -
KUKA KR QUANTEC-2 HC Maintenance and Rescue Guide -
KUKA KR QUANTEC-2 Maintenance Troubleshooting Guide -
KUKA KR QUANTEC PA series heavy-duty palletizing robot -
KUKA KR IONTEC-2 Debugging and Maintenance Guide -
KUKA KR IONTEC ultra series six axis heavy-duty industrial robot -
KUKA KR IONTEC HO Maintenance Troubleshooting Guide -
KUKA KR CYBERTECH-3 HW maintenance troubleshooting -
KUKA KR CYBERTECH-3 maintenance troubleshooting -
KUKA KR8 R2100-2 arc HW maintenance troubleshooting -
KUKA KR CYBERTECH nano-2 maintenance troubleshooting -
KUKA KR 20 R1810 HO maintenance troubleshooting -
KUKA CYBERTECH maintenance troubleshooting -
KUKA KR CYBERTECH CR maintenance troubleshooting -
KUKA KR AGILUS-3 ultra maintenance troubleshooting -
KUKA KR 300 R2700-2 C-F maintenance troubleshooting -
KUKA KR 20 R1820-2 E Maintenance Troubleshooting and Replacement Practice -
KUKA AGILUS-3 troubleshooting -
KUKA KR AGILUS-2 maintenance troubleshooting -
KUKA KR 1000 titan PA troubleshooting -
KUKA KR 700 PA maintenance troubleshooting -
KUKA KR18 R1450-3 PP Operation and Maintenance Essentials -
KUKA KR12 SCARA Operations Essentials
-
KUKA KR4 R600 Operation and Maintenance Essentials -
KUKA KR 3 AGILUS Operation and Maintenance Safety Essentials -
KUKA LBR iiwa CR Cleanroom Troubleshooting and Maintenance -
Troubleshooting and Maintenance of KUKA KR AGILUS sixx -
KUKA KR60 SCARA CS Maintenance Guide -
KUKA KR 23 SCARA-2 Robot Installation and Maintenance Detailed Explanation -
KUKA KR 20 SCARA CS Robot Selection and Maintenance Guide -
KUKA KR 15 DELTA-2 Robot Installation and Maintenance -
KUKA KR 13 SCARA-2 CS Detailed Explanation -
KUKA KR 3 D1200 Robot Operation and Maintenance -
KUKA KR 3 D1200 HM Robot Operation and Maintenance Guide -
KUKA LBR Med Medical Robot Integration Guide -
KUKA iiwa Robot Safety Operation and Maintenance -
KUKA LBR iiwa CR Operations and Troubleshooting -
Lauer PCS Series Operation Console Configuration Guide -
Installation and Maintenance Guide for KUKA LBR iisy Series Collaborative Robots -
KUKA LBR iisy 3 R760 Collaborative Robot Debugging Guide -
KUKA LBR iico Robot Installation and Debugging Technical Guide -
Lauer Starline LCA 300/320/325 Text Display Application Guide -
Lauer PCS 950 Operation Console Application Guide -
Lauer EPC series industrial computer configuration -
Bonfiglioli Precision Planetary Gearbox Selection and Application Guide -
Installation and heat dissipation of Bonfiglioli Vectron cold plate frequency converter -
Bonfiglioli Vectron EM-RES-02 Expansion Module Installation and Configuration Guide -
Bonfiglioli Vectron EM-RES-01 Expansion Module Rotary Transformer Interface Configuration Guide -
Bonfiglioli Vectron EM-IO-04 module KTY temperature measurement and digital port configuration -
Bonfiglioli Vectron EM-IO-03 Expansion Module Dual Analog Output and PTC Configuration -
Installation of Bonfiglioli Vectron EM-IO-02 Expansion Module and PTC Temperature Monitoring Configuration -
Bonfiglioli Vectron EM-IO-01 Expansion Module Installation and System Bus Configuration Guide -
Bonfiglioli F series gearbox spare parts identification and replacement guide -
Installation, maintenance, and troubleshooting of Bonfiglioli HF series reducers for hoisting applications -
Bonfiglioli 300 series reducer installation, maintenance, and troubleshooting guide -
Selection and integration guide for Bonfiglioli R3 series planetary gearboxes in primary crushing equipment -
Bonfiglioli C-series ATEX gearbox selection and explosion-proof application guide -
Bonfiglioli Vectron EM-ENC-05 Full Function Expansion Module Integration Guide -
Bonfiglioli Vectron EM-ENC-04 Multi functional Expansion Module Complete Configuration Guide -
Bonfiglioli Vectron EM-ENC-03 Second Encoder Interface and System Bus Expansion Guide -
Bonfiglioli Vectron EM-ENC-02 Expansion Module Integration and Encoder Interface Guide -
Bonfiglioli Vectron CM-CAN CANopen Communication Configuration and DS402 Control Guide -
Bonfiglioli Vectron EM-SYS System Bus Networking and Virtual Link Configuration Guide -
Bonfiglioli Vectron CM-PDP Profibus DP Configuration and Debugging Guide -
Bonfiglioli Vectron CM-232/485 Modbus Communication Configuration Guide -
Bonfiglioli BMS series servo reduction motor selection and integration guide -
Bonfiglioli ACTION 210/410 Inverter Debugging and Fault Diagnosis Complete Guide -
Honeywell Enhanced Micro TDC 3000X System Redundancy Architecture and Maintenance Guide -
Selection and Configuration of Bonfiglioli Active Series Inverter -
Installation, Maintenance, and Troubleshooting Guide for Bonfiglioli HDP/HDO Series Heavy duty Gearboxes -
Installation, Maintenance, and Troubleshooting Guide for Bonfiglioli 300/300M Series Gearboxes -
Bonfiglioli 300M planetary gearbox selection and thermal verification guide -
Bonfiglioli 3/H series heavy-duty gearbox selection and verification guide -
Bonfiglioli KRG/KCG/KSD Hydraulic Coupling Selection and Integration Guide -
Bonfiglioli BTD/BCR Servo Motor System Integration and Interface Configuration Guide -
Bonfiglioli BTD/BCR Synchronous Servo Motor Selection and Interface Configuration Guide -
Bonfiglioli VF-W series ATEX explosion-proof reducer selection guide -
Bonfiglioli EM-ENC-03 Expansion Module Configuration and System Bus Integration Guide -
Bonfiglioli EVOX CP Explosion proof Reducer: Quick Guide for Installation and Maintenance -
Bonfiglioli C/A/F/S Reducer ATEX Installation and Maintenance Practice Guide -
Bonfiglioli BXN/MXN Motor Installation and Brake Maintenance Complete Guide -
Bonfiglioli VF-W IE2/IE3 Worm Gear Reducer: Energy Efficiency Selection and Application Practice Guide -
Bonfiglioli VF-W Explosion proof Worm Gear Reducer: ATEX Selection and Installation Complete Guide -
Selection and Calculation of Bonfiglioli RAN Right Angle Gearbox -
Bonfiglioli Industrial Transmission System Selection Guide -
Bonfiglioli EVOX Gearmotor Selection and Configuration Guide -
Bonfiglioli CAFS Reducer Selection and Application Guide -
Bonfiglioli C-A-F gearbox selection and maintenance -
Bonfiglioli C Series ATEX Explosion proof Reducer Selection -
Bonfiglioli BN-BE-BX Series Motor Selection Guide -
Bonfiglioli BMD Servo Motor Selection and Configuration Guide -
Selection of Bonfiglioli A-series servo reducer -
Bonfiglioli AS Series Reducer Installation and Maintenance Guide -
Bonfiglioli Active 401/201 Inverter Selection and Application Guide -
Bonfiglioli EM-IO-04 Expansion Module Configuration Guide -
Bonfiglioli EM-ENC-02 Expansion Module Engineering Configuration Guide -
Bonfiglioli A-series gearbox selection and maintenance -
Bonfiglioli Transmission and Automation Product Selection Reference -
Bonfiglioli RAN series bevel gearbox selection and maintenance guide -
Bonfiglioli ACTION 401/201 Inverter Engineering Integration Guide -
Alcatel Lucent Stellar AP1301 Deployment and Performance Optimization -
Alcatel Lucent ALE Wireless Handheld System Selection and Deployment Guide -
In depth analysis of Alcatel Lucent MDR-8000 microwave system engineering technology -
Alcatel 1660SM Multi Service Node Operations and Troubleshooting -
Alcatel Lucent OmniSwitch 6850 Stacking and Security Configuration Guide
