Description
Pepperl+Fuchs KFD2-UFC-Ex1.D Frequency Converter with Trip Values
The Pepperl+Fuchs KFD2-UFC-Ex1.D is a sophisticated 1-channel isolated barrier designed for intrinsic safety applications in demanding hazardous environments. This universal frequency converter is critical for process automation, as it transforms digital input signals into a proportionally adjustable 0/4 mA to 20 mA analog output signal, while simultaneously serving as a switch amplifier and trip alarm. It ensures safe signal transmission between field devices located in Zone 0/Div. 1 and control systems in the safe area.
Engineered for high-precision field performance, the KFD2-UFC-Ex1.D handles a broad input frequency range from 1 mHz to 5 kHz. It offers versatile configuration options through a dedicated keypad, LC display, or PACTware software, allowing for easy adjustment of trip values (min/max alarms), pulse dividers, and error signal outputs. The device features a start-up override function and comprehensive line fault detection (LFD) to maintain operational uptime and safety integrity.
Key Features:
✅ ATEX, IECEx, and UL/FM certified for use in hazardous areas
✅ Easy configuration via front-facing keypad or PACTware software
✅ SIL 2 Safety Integrity Level according to IEC/EN 61508/61511
✅ Wide input frequency range: 1 mHz to 5 kHz
✅ Analog output: 0/4 mA to 20 mA (free adjustable)
✅ Multiple switch outputs: 2 relay outputs and 1 potential-free transistor output
✅ Integrated Line Fault Detection (LFD) for breakage and short-circuits
✅ Start-up override: 1 to 1000 seconds, adjustable in 1-second steps
✅ Collective error message output via Power Rail
📦 Package Options:
🔹 Standard Unit: KFD2-UFC-Ex1.D Frequency Converter
🔹 Power Rail Integration: Compatible with UPR-03 series for streamlined 24V DC supply
🔹 Accessory Bundle: Available with NAMUR Resistor Network (F-NR3-Ex1) or measuring resistors
Pepperl+Fuchs KFD2-UFC-Ex1.D Technical Specifications:
| Feature | Details |
|---|---|
| Product Model | KFD2-UFC-Ex1.D |
| Signal Type | Digital Input / Analog Output |
| Number of Channels | 1-channel isolated barrier |
| Supply Voltage | 20 ... 30 V DC (Power Rail or Terminals 23+, 24-) |
| Input Type | NAMUR sensors or dry contacts (Intrinsically Safe) +1 |
| Input Frequency | 0.001 Hz to 5000 Hz |
| Analog Output | 0/4 mA ... 20 mA (Load max. 650 Ω) |
| Switch Outputs | 2 Relay outputs + 1 Transistor output (Passive) +1 |
| Safety Integrity Level | SIL 2 +1 |
| Programming | Keypad, LC display, or PACTware software +2 |
| Line Fault Detection | Breakage and Short-circuit monitoring |
| Ambient Temperature | -20 ... 60 °C (-4 ... 140 °F) +3 |
| Dimensions | 40 x 119 x 115 mm (W x H x D) +3 |
| Certifications | ATEX, IECEx, UL, FM, CE +3 |
Certifications & Compliance:
🔗 ATEX/IECEx – [Ex ia Ga] IIC, [Ex ia Da] IIIC for use in Zones 0, 1, and 2
🔗 FM to Class l,ll,lll, Division 1 Groups A, B, C, D, E, F, and G
🔗 SIL 2 – Functional safety compliant to IEC/EN 61508
🔗 IP20 – Ingress protection rating against solid objects
🔗Download Datasheet
Applications of Pepperl+Fuchs KFD2-UFC-Ex1.D:
🔹 Oil & Gas
🔹 Chemical Plants
🔹 Mining
🔹 Labs
🔹 Manufacturing
What’s in the Box?
📦 1x KFD2-UFC-Ex1.D Isolated Barrier
📦 1x Set of Removable Terminals (Blue and Green)
📦 1x Integrated LC Display and Keypad
📦 1x Documentation Kit / Quick Start Guide
Ordering & Shipping Details
📦 Lead Time: Contact for availability (Typically ships in 3-5 business days)
📍 Shipping Terms: Worldwide / Expedited Options
💳 Payment Options: Credit Card, PayPal, Net 30 Terms
Related Products:
🔗 KFD2-EB2 Power Feed Module
🔗 UPR-03 Universal Power Rail
🔗 F-NR3-Ex1 NAMUR Resistor Network
FAQs:
What is the maximum input frequency for this device?
The KFD2-UFC-Ex1.D supports a wide input frequency range from 0.001 Hz (1 mHz) up to 5000 Hz (5 kHz).
Can I configure this device without a computer?
Yes, the device can be easily configured using the front-mounted keypad and LC display, though PACTware software is also supported.
Does this unit support line fault detection?
Yes, it includes Line Fault Detection (LFD) for detecting lead breakages (≤ 0.15 mA) and short-circuits (> 6.5 mA).
What is the SIL rating of this frequency converter?
This device is rated up to SIL 2 according to IEC/EN 61508 and IEC/EN 61511.
