Pepperl+Fuchs KFU8-UFC-1.D Frequency Converter 231195

The Pepperl+Fuchs KFU8-UFC-1.D (Order Number: 231195) is a high performance 1-channel signal conditioner, premium class, for the conversion of digital input frequencies into a highly accurate, freely adjustable 0/4 mA…20 mA analog output signal. This universal frequency converter for essential industrial and maritime process applications, operates seamlessly as an isolation amplifier, switch amplifier and trip alarm monitor.

Whether monitoring the RPM of essential propulsion subsystems, auxiliary turbochargers or heavy-duty motor axes, the KFU8-UFC-1D provides strong galvanic isolation to protect control gear from electrical noise on the field side. Thanks to its integrated keypad and LC display, all parameters may be set on the fly without the need for external equipment. The integrated Functional Safety architecture up to SIL 2 guarantees optimal process uptime and operational safety even in high-stress machinery environments.

Model Details:

• Brand / Manufacturer: Pepperl+Fuchs
• Model Number: KFU8-UFC-1.D
• Part Number (MPN): 231195
• GTIN/EAN: 4050143062393
• Product Type: Frequency Converter with Trip Values & Signal Isolation
• Condition: Brand New (Open Box)

Technical Specifications: KFU8-UFC-1.D

Where to use?

1. Major & Auxiliary Speed Monitoring Instantaneous RPM monitoring of major maritime propulsion shafts, diesel-generator sets, ventilation fans, and industrial conveyor drives.
2. Rotational Direction & Reverse Slip Detection: Monitoring of critical boiler feedwater pumps and deep-well ballast pumps to prevent catastrophic mechanical failure due to reverse rotation.
3. Flow & Volumetric Metering: Converts positive displacement, turbine or vortex flowmeter pulse train outputs into normalized, PLC-ready, analog control currents.
4. Process Limit Trip Alarming: Safe minimum/maximum process speed alarming for heavy industrial manufacturing loops, thruster controls and automated winches.

Product Compatibility & Field Sensor Connections

The KFU8-UFC-1.D features a flexible, multi-terminal topology designed for a broad array of field sensors:

• NAMUR Sensors: Direct connection via Terminals 1+ and 3- complying with EN 60947-5-6 standards with automatic line fault monitoring.
• 2-Wire & 3-Wire Proximity Switches: Fully compatible with standard industrial PNP/NPN sensors (Terminals 1+, 2-, and 3).
• Mechanical Dry Contacts: Integrated filtering handles mechanical contact chatter flawlessly.
• Start-Up Override (Input II): Terminals 13+ and 14- can be linked to an external signal to bypass low-frequency trips during heavy machinery startup sequences.

Part Number Cross-References

• Pepperl+Fuchs: KFU8-UFC-1.D, KFU8UFC1D, 231195
• EAN/UPC Alternative: 4050143062393

Guidance from NDMarineTech’s Expert Engineer:

1. Preventing Nuisance Trips on Startup: When configuring speed monitoring for high-inertia equipment like engine room ventilation fans or large centrifugal pumps, remember to utilize the Start-Up Override (Input II) circuit. This overrides the minimum alarm trip during initial rotation spin-up, preventing the automation system from dropping offline before the machinery reaches its nominal operating envelope.
2. Configuring Line Fault Detection (LFD): If you are running long cable paths from the steering gear room or shaft tunnel back to the central control station, pair this module with a NAMUR sensor. Enabling the built-in LFD allows the unit to instantly differentiate between a broken sensor wire and actual zero-speed conditions—a distinction that saves hours of troubleshooting at sea.
3. Thermal Management: While the device is rated for compact 40 mm space-saving rail arrangements, if you are mounting multiple units together inside a non-air-conditioned marine enclosure, leave a 5 mm air gap between modules to optimise passive heat dissipation and extend the lifespan of the internal output relays.