Pepperl Fuchs KFD2-CR4-1-2O Transmitter Power Supply

Description Are you facing signal interference issues when trying to power 2-wire transmitters and transmit their 4-20 mA signals to multiple isolated loads? The Pepperl Fuchs KFD2-CR4-1-2O is a high-performance signal conditioner designed to provide both power and galvanic isolation for field instrumentation. Part of the renowned K-System lineup, this module takes a single input from a transmitter and provides two independent, isolated outputs—essentially acting as a signal splitter and isolator in one compact DIN-rail housing. Inventory Status and Commercial Logistics Product Condition: New Original (Factory Sealed). Availability: In stock and ready for immediate global dispatch. Lead Time: Typically ships within 24 to 48 hours. Warranty Protection: 12-month standard industrial warranty. Commercial Note: While the KFD2 series is a high-volume product, global supply chain fluctuations can impact localized pricing. The listed price serves as a reference; contact our trade desk for a formal, volume-adjusted quotation. Technical Specifications and Field Parameters In field deployments involving complex grounding systems, the KFD2-CR4-1-2O is often utilized specifically to break ground loops that cause “phantom” offsets in PLC analog input cards. Core Electrical Specifications Parameter Specification Value Model Number KFD2-CR4-1-2O Input Type 2-wire transmitter (provides 15 V DC at 20 mA) Input Signal 4 mA to 20 mA Output Type 2 x 4 mA to 20 mA (Active or Passive) Supply Voltage 19 V DC to 30 V DC (via Power Rail or terminals 11 , 12-) Isolation 3-port isolation (Input / Output / Power) Accuracy < 0.1 % of full scale Mounting 35 mm DIN-rail Operational Capabilities The module is designed for versatility in how it interfaces with your control system. Signal Splitting: It takes one 4-20 mA process variable and replicates it accurately across two outputs. This allows you to send the signal to a local display and a remote PLC simultaneously without loading down the loop. Power Rail Compatibility: This unit can be powered via the K-System Power Rail, which reduces wiring complexity in large cabinets by eliminating the need to daisy-chain 24 V DC power to every individual module. Global Procurement and Customs Compliance Notes Shipping specialized interface modules like the KFD2-CR4-1-2O requires accurate classification to ensure smooth transit through international customs hubs. Trade Compliance Data HS Code: 85437090 (Electrical machines and apparatus, having individual functions, not specified elsewhere) ECCN: EAR99 (No export license required for most commercial end-users) Country of Origin: Typically Germany or Singapore; check the module side-label for exact verification for FTA (Free Trade Agreement) claims. Logistics and Shipping We offer FCA (Free Carrier) and DAP (Delivered at Place) terms for all international orders. For critical maintenance or “Line Down” situations, we utilize express air services (DHL/FedEx). The module is lightweight (approx. 150 g), meaning high-quantity orders can be shipped via air very cost-effectively. We utilize anti-static packaging even for non-processor modules to ensure the internal CMOS components are protected from ESD during high-altitude transit. Engineering Notes for Field Deployments Important Configuration Note: The KFD2-CR4-1-2O features several DIP switches on the side of the housing. These determine whether the outputs are configured as “Source” (the module provides the loop power) or “Sink” (the PLC card provides the loop power). Verifying these settings before commissioning is vital to avoid damaging your PLC’s analog input channel. Well, technically this module is rated for 4-20 mA, but it can actually pass signals up to 22 mA to account for NAMUR NE43 sensor fault levels. To be frank, if you aren’t using the second output, you should leave it open-circuit; however, some older revisions of this hardware preferred a 250 Ω dummy load on unused outputs to maintain optimal thermal stability, though modern “V1” and later units have much better heat dissipation. On a recent project in a wastewater facility, we found that field technicians were grounding the negative side of the transmitter loop at the field junction box. This bypassed the module’s isolation. For the KFD2-CR4-1-2O to function correctly as an isolator, the field loop must remain “floating” relative to the cabinet ground. Frequently Asked Questions Is the KFD2-CR4-1-2O intrinsically safe (IS)? No. This specific model is a signal conditioner for non-hazardous areas. If your transmitter is located in a Zone 0, 1, or Class I Div 1 area, you must use the intrinsically safe version, which is the KCD2-STC-Ex1 or similar “Ex” rated barriers from the P F catalog. Can I use this module for a 4-wire transmitter? Well, technically you can, but since the KFD2-CR4-1-2O is designed to provide power to a 2-wire loop, connecting a 4-wire (self-powered) transmitter requires careful wiring to terminals 1 and 3 to ensure you aren’t “back-feeding” voltage into the transmitter’s output stage. How do I get a formal quote for international delivery? Submit an inquiry detailing your required quantity and the ultimate destination country. Our logistics team will provide a pro forma invoice that includes shipping costs, estimated lead times, and all necessary HTS codes for your customs broker. Are you planning to use the second output for a redundant controller or a local panel meter? PEPPERL FUCHS 2082|Industrial Signal Converter PEPPERL FUCHS 2108HAT|Fieldbus Isolator and Signal Converter