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Pepperl+Fuchs KCD2-SOT-2 2-Wire 4-20mA Intrinsically Safe Isolation Barrier DIN Rail Mount Signal Conditioner
Pepperl+Fuchs KCD2-SOT-2 2-Wire 4-20mA Intrinsically Safe Isolation Barrier DIN Rail Mount Signal Conditioner
Specifications
Brand Name :
Pepperl+Fuchs
Model Number :
KCD2-SOT-2
Certification :
CE SIL2
Place of Origin :
Singapore
MOQ :
1
Price :
negotiable
Payment Terms :
T/T,Western Union
Supply Ability :
500pcs/month
Delivery Time :
In stock
Packaging Details :
original package
Condition :
P+F original brand new
Warranty :
one year
Shipping way :
DHL FedEx
Application :
provides the galvanic isolation between field circuits and control circuits.
Description
Pepperl+Fuchs KCD2-SOT-2 2-Wire 4-20mA Intrinsically Safe Isolation Barrier DIN Rail Signal Galvanic Isolator Explosion Proof
Product Overview

The KCD2-SOT-2 is a high-performance 2-channel switch amplifier from Pepperl+Fuchs' K-System, specifically engineered to transfer digital signals from field devices to control systems with complete galvanic isolation. This signal conditioner accepts NAMUR sensors (acc. to EN 60947-5-6) or dry contact inputs and provides two passive transistor outputs for seamless integration with PLCs, DCS systems, and other industrial controllers.

With a compact 12.5 mm width and 24 V DC power supply (via Power Rail or terminals), the KCD2-SOT-2 is the ideal solution for hazardous area signal transfer, digital input isolation, and line fault monitoring in industrial automation and process control applications.

Certified for SIL 2 (SC 3) acc. to IEC/EN 61508, the KCD2-SOT-2 delivers reliable, safety-rated performance for demanding industrial environments.

Key Features & Benefits
  • 2-Channel Operation: Two independent signal channels in a single 12.5 mm housing — maximizes panel space efficiency and reduces installation costs
  • Dual Input Options: Accepts both NAMUR sensors (acc. to EN 60947-5-6) and dry contact (mechanical switch) inputs — flexible field device connectivity
  • Galvanic Isolation: Reinforced insulation between input/output and input/power supply (300 Veff), plus basic insulation between output/power supply and output/output (50 Veff) — ensures safe separation of field and control circuits
  • Line Fault Detection (LFD): Monitors field wiring for breakage (I ≤ 0.1 mA) and short-circuit (I ≥ 6.5 mA) conditions — provides diagnostic information for predictive maintenance
  • Reversible Mode of Operation: DIP-switch configurable for normally open or normally closed operation — adapts to any application requirement
  • SIL 2 Certified: Safety Integrity Level 2 (SC 3) acc. to IEC/EN 61508 — suitable for safety-related applications
  • High Switching Frequency: Operates up to 5 kHz — supports high-speed digital signal processing
  • Fast Response Time: ≤ 200 µs response — ensures real-time signal transfer
  • Power Rail Compatibility: Connects to Pepperl+Fuchs Power Rail for simplified daisy-chained power distribution
  • LED Status Indicators: Visual indication of channel status, fault conditions, and power supply — simplifies troubleshooting
Technical Specifications
Parameter Value
Manufacturer Pepperl+Fuchs
Product Type Switch Amplifier / Signal Conditioner
Model KCD2-SOT-2
Part Number 214248
Signal Type Digital Input
Functional Safety
Parameter Value
Safety Integrity Level (SIL) SIL 2
Systematic Capability (SC) SC 3
Supply
Parameter Value
Connection Power Rail or terminals 9+, 10-
Rated Voltage 19 ... 30 V DC
Ripple ≤ 10 %
Rated Current 30 ... 20 mA
Power Dissipation ≤ 800 mW (including output)
Input (Field Side)
Parameter Value
Connection terminals 1+, 2-; 3+, 4-
Rated Values acc. to EN 60947-5-6 (NAMUR)
Open Circuit Voltage approx. 10 V DC
Short-Circuit Current approx. 8 mA
Switching Point 1.2 ... 2.1 mA
Switching Hysteresis approx. 0.2 mA
Line Fault Detection - Breakage I ≤ 0.1 mA
Line Fault Detection - Short-Circuit I ≥ 6.5 mA
Minimum Pulse/Pause Ratio 100 µs / 100 µs
Output (Control Side)
Parameter Value
Connection terminals 5, 6; 7, 8
Output Type 2 x passive transistor
Rated Voltage 30 V DC
Rated Current 50 mA
Response Time ≤ 200 µs
Signal Level - 1-signal (external voltage) - 3 V max. for 50 mA
Signal Level - 0-signal blocked output (off-state current ≤ 10 µA)
Collective Error Message Power Rail
Transfer Characteristics
Parameter Value
Switching Frequency ≤ 5 kHz
Galvanic Isolation
Parameter Value
Input/Output reinforced insulation, 300 Veff
Input/Power Supply reinforced insulation, 300 Veff
Output/Power Supply basic insulation, 50 Veff
Output/Output basic insulation, 50 Veff
Ambient Conditions
Parameter Value
Ambient Temperature -20 ... 60 °C (-4 ... 140 °F)
Extended Temperature Range up to 70 °C (158 °F) with proper mounting
Mechanical Specifications
Parameter Value
Degree of Protection IP20
Connection screw terminals
Mass approx. 100 g
Dimensions (W x H x D) 12.5 x 119 x 114 mm (0.5 x 4.7 x 4.5 inch)
Mounting 35 mm DIN mounting rail acc. to EN 60715:2001
Function Description

The KCD2-SOT-2 provides complete galvanic isolation between field circuits and control circuits. The device transfers digital signals from NAMUR sensors (proximity sensors, level switches, flow monitors) or dry contacts (mechanical switches, relays, push buttons) from the field to the control system.

How it works:
  • Each input channel independently controls a passive transistor output
  • The mode of operation can be reversed via DIP switches (normally open / normally closed)
  • Line fault detection (LFD) monitors field wiring integrity and can be disabled if not required
  • Fault conditions are indicated via front-panel LEDs according to NAMUR NE44 and a collective error message output on the Power Rail
Signal Flow:
Field Side (Input) Control Side (Output)
NAMUR sensor ──► KCD2-SOT-2 ──► Passive transistor output ──► PLC/DCS input
Dry contact ──► (Galvanic isolation) ──► 30 V DC / 50 mA max.
Applications

The KCD2-SOT-2 is specifically designed for digital signal transfer in demanding industrial environments:

Industry Application
Process Control Isolated digital input interfacing for PLCs and DCS systems
Oil & Gas Transfer of NAMUR proximity sensor signals from hazardous areas
Chemical Processing Dry contact isolation for valve position feedback, level switches
Pharmaceutical SIL 2 certified signal transfer for safety-related applications
Factory Automation High-speed (5 kHz) digital signal processing for conveyor systems, machine control
Water/Wastewater Pump status monitoring, float switch signal isolation
Typical field devices connected:
  • NAMUR inductive proximity sensors (EN 60947-5-6)
  • NAMUR capacitive level switches
  • Mechanical dry contacts (push buttons, limit switches, relays)
  • Intrinsically safe sensors via Zener barriers
Why Choose the KCD2-SOT-2?
Complete Galvanic Isolation — Reinforced insulation (300 Veff) between input/output and input/power supply ensures safe separation of hazardous area field circuits from safe area control systems, protecting personnel and equipment.
SIL 2 Certified for Safety Applications — Certified acc. to IEC/EN 61508 with Systematic Capability SC 3, the KCD2-SOT-2 is suitable for use in safety instrumented systems (SIS) up to SIL 2.
Space-Saving Design — At just 12.5 mm width (housing type A2), the KCD2-SOT-2 provides 2 channels of isolated digital input in a compact footprint, maximizing DIN rail density.
Built-in Diagnostics — Line fault detection (LFD) continuously monitors field wiring for breakage and short-circuit conditions, enabling predictive maintenance and reducing unplanned downtime.
Flexible Configuration — DIP-switch configurable for mode of operation (NO/NC) and LFD on/off — adapts to any application without external programming tools.
Proven Pepperl+Fuchs K-System — The K-System is the industry standard for signal conditioning and isolation, trusted globally for reliability, quality, and long service life.
KCD2-SOT-2 vs. Related Models
Model Channels Input Type Output Type Width Special Features
KCD2-SOT-2 2 NAMUR / Dry contact 2 x passive transistor 12.5 mm LFD, SIL 2, reversible mode
KCD2-SOT-2.SP 2 NAMUR / Dry contact 2 x passive transistor 12.5 mm Customized parameters
KCD2-ST-2 2 NAMUR / Dry contact 2 x active transistor 12.5 mm Active output variant
KCD2-SR-2 2 NAMUR / Dry contact 2 x relay 12.5 mm Relay output, higher current
KFD2-SOT-2 2 NAMUR / Dry contact 2 x passive transistor 12.5 mm K-System equivalent (different housing)
Ordering Information
Item Details
Part Number KCD2-SOT-2
Manufacturer Part Number 214248
Brand Pepperl+Fuchs
Product Family K-System
Country of Origin Germany
Condition New, Original, Factory Sealed
Minimum Order Quantity 1 piece
Warranty Manufacturer's standard warranty
Shipping Immediate dispatch via DHL, FedEx, UPS, TNT

Contact our sales team for volume pricing, datasheet downloads, or technical application support.

Compliance & Certifications
SIL 2 Certified
CE Compliant
NAMUR Compliant
RoHS Compliant
cULus Listed
CCC Certified
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Pepperl+Fuchs KCD2-SOT-2 2-Wire 4-20mA Intrinsically Safe Isolation Barrier DIN Rail Mount Signal Conditioner

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Product Detail
Brand Name :
Pepperl+Fuchs
Model Number :
KCD2-SOT-2
Certification :
CE SIL2
Place of Origin :
Singapore
MOQ :
1
Price :
negotiable
Contact Supplier
Pepperl+Fuchs KCD2-SOT-2 2-Wire 4-20mA Intrinsically Safe Isolation Barrier DIN Rail Mount Signal Conditioner

Shenzhen Hengyo Power Technology Co., Limited

Verified Supplier
1 Years
shenzhen
Since 2013
Business Type :
Distributor/Wholesaler, Exporter, Seller, Manufacturer, Trading Company
Main Products :
AC Servo Motor, Panasonic AC Servo Motor, AC Servo Driver
Total Annual :
2000000-5000000
Employee Number :
20~50
Certification Level :
Verified Supplier
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