Configured for analog voltage signal isolation and hazardous-area transmission in industrial control instrumentation, the PEPPERL + FUCHS KFD2-VR4-Ex1.26 (KFD2-VR4-Ex1.26 Voltage Repeater) provides direct physical/electrical execution.

Model Designation and Suffix Structure

The complete order designation encodes the specific K-System housing profile, the analog voltage repeater functional principle, single-channel hazardous-area intrinsic safety routing, and exact input/output voltage scaling ranges calibrated for industrial sensor loops.

Hardware Specifications

Intrinsic Safety Barriers and Surge Protection Limits

Engineered for Pepperl+Fuchs K-System infrastructure, this isolator incorporates certified intrinsic safety (Ex i) barriers to restrict electrical energy transfer into explosive atmospheres. The internal circuitry provides galvanic isolation between input and output loops, protecting downstream acquisition cards from high-voltage transients. Surge voltage protection limits are integrated on both signal ports to safeguard against electromagnetic interference and switching spikes within dense cabinet layouts.

Ordering Information and Package Contents

• 1 x PEPPERL + FUCHS KFD2-VR4-Ex1.26 Voltage Repeater module
• 1 x Removable screw terminal block set
• 1 x Technical documentation sheet and safety manual

Field Installation Guidelines and Mounting Precautions

• Mount the unit vertically onto a standard 35 mm DIN rail inside a protected industrial control cabinet.
• Route intrinsically safe wiring through designated conduits and maintain strict physical separation from safe-area signal cables.
• Connect the 24 VDC supply voltage to the power rail or direct terminals, ensuring proper polarity matching.
• Torque terminal block screws securely to prevent high-resistance joints and intermittent voltage drops.
• Verify ground continuity of the DIN rail to maintain proper electromagnetic shielding performance.

Frequently Asked Questions

• Q: What is the primary operational function of the KFD2-VR4-Ex1.26?

  A: It provides galvanic isolation and 1:1 signal repetition for analog voltage signals originating from hazardous areas.

• Q: What input and output voltage ranges are supported by this module?

  A: The unit processes standard 0 to 10 VDC analog voltage signals across its input and output channels.

• Q: What power supply voltage is required for standard operation?

  A: The module operates on a DC supply voltage ranging between 19 VDC and 30 VDC.

• Q: How is the module mounted within an industrial control panel?

  A: It snaps directly onto a standard 35 mm DIN rail complying with EN 60715 standards.

• Q: Does the device feature hazardous area approval ratings?

  A: Yes, it incorporates intrinsic safety (Ex i) circuitry designed for interfacing with sensors in hazardous zones.

• Q: Can this repeater be installed or replaced while the system is live?

  A: Hot-swapping depends on localized plant safety permits, but signal and power wiring must be de-energized during maintenance.

• Q: What is the power dissipation of the unit during full load?

  A: Internal power consumption remains under 1.5 W to minimize thermal buildup inside enclosures.

• Q: What type of terminals are provided for signal connections?

  A: The module is equipped with removable screw-clamp terminal blocks for secure conductor retention.