Pepperl+Fuchs KCD2-SCD-Ex1.ES SIL 3 Certified Safety Barrier with Bidirectional HART Communication and 650 Ω Load Capacity
Price:
negotiable
MOQ:
1
Delivery Time:
In stock
Brand:
Pepperl Fuchs
Product Description
Pepperl+Fuchs KCD2-SCD-Ex1.ES 24VDC Power Rail DIN Rail Mount Safety Barrier
Product Overview
The KCD2-SCD-Ex1.ES is a high-performance 1-channel isolated barrier from Pepperl+Fuchs' K-System, specifically engineered to drive SMART I/P converters, electrical valves, and positioners located in hazardous areas. This signal conditioner repeats the 4...20 mA input signal from a control system to field devices while providing complete galvanic isolation.
With a compact 12.5 mm width and 24 V DC power supply (via Power Rail or terminals), the KCD2-SCD-Ex1.ES supports bidirectional HART communication for intelligent field device configuration and diagnostics.
Certified for SIL 3 (highest level for signal conditioners) according to IEC/EN 61508 and approved for hazardous area installation with [Ex ia Ga] IIC, [Ex ia Da] IIIC, and [Ex ia Ma] I certifications, this device delivers reliable, safety-rated performance for demanding explosive atmosphere applications.
Model Number Decoding
| Code Segment | Meaning |
|---|---|
| KCD2 | K-System, 2-channel housing width (12.5 mm) |
| SCD | SMART Current Driver – analog output signal conditioner |
| Ex1 | 1-channel with intrinsic safety (Ex) certification |
| .ES | Specific variant with enhanced specifications – SIL 3 rating |
The ".ES" suffix denotes the enhanced safety version with SIL 3 certification, distinguishing it from standard models.
Key Features & Benefits
- SIL 3 Certified – Highest Safety Rating: Safety Integrity Level 3 according to IEC/EN 61508 – suitable for the most demanding safety instrumented systems (SIS)
- Intrinsic Safety Certification: Certified with [Ex ia Ga] IIC for Zone 0, 1, and 2 hazardous areas – gas groups IIC (hydrogen, acetylene), IIB, and IIA. Also certified for dust (IIIC) and mining (Ma) applications
- High Load Drive Capability: Drives loads up to 650 Ω with ≥13 V at 20 mA, providing sufficient power for demanding positioners and long cable runs
- Bidirectional HART Communication: Digital signals can be superimposed on analog values at the field side or control side and transferred bi-directionally – supports full HART configuration and diagnostics
- Integrated Test Sockets: Built-in test sockets for HART communicator connection are integrated into the device terminals – no need for external connection boxes
- Line Fault Detection (LFD): An open or short field circuit presents high impedance (>100 kΩ) or low impedance (<50 Ω) to the control side, allowing alarm conditions to be monitored by the control system
- Fault Indication: Faults are signaled by LEDs and a separate collective error message output, simplifying troubleshooting
- Compact 12.5 mm Width: Ultra-slim design (housing type A2) maximizes DIN rail density in crowded control cabinets
- Wide Operating Temperature: Functions reliably from -40°C to +70°C, suitable for harsh industrial environments
- DNV Marine Approved: Certified for marine and offshore applications – suitable for shipbuilding installations
Technical Specifications
General Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Pepperl+Fuchs SE |
| Product Type | SMART Current Driver / Signal Conditioner |
| Model | KCD2-SCD-Ex1.ES |
| Signal Type | Analog output |
| Channels | 1 |
| Housing Width | 12.5 mm (type A2) |
Functional Safety
| Parameter | Value |
|---|---|
| Safety Integrity Level (SIL) | SIL 3 acc. to IEC/EN 61508 |
Supply
| Parameter | Value |
|---|---|
| Connection | Power Rail or terminals 9+, 10- |
| Rated Voltage | 19 ... 30 V DC |
| Ripple | ≤ 10 % |
| Rated Current | ≤ 33 mA at 24 V |
| Power Dissipation | ≤ 700 mW at 20 mA and 500 Ω load |
| Power Consumption | ≤ 800 mW |
Input (Control Side)
| Parameter | Value |
|---|---|
| Connection | terminals 5-, 6+ |
| Input Signal | 4 ... 20 mA, limited to approx. 25 mA |
| Input Voltage | open loop voltage of the control system < 30 V, in line fault mode < 60 V |
| Voltage Drop | approx. 6 V at 20 mA |
| Input Resistance | > 100 kΩ, with field wiring open or < 50 Ω |
Output (Field Side)
| Parameter | Value |
|---|---|
| Connection | terminals 1+, 2- |
| Voltage | ≥ 13 V at 20 mA |
| Current | 4 ... 20 mA |
| Load | 100 ... 650 Ω |
| Ripple | 20 mV rms |
| Line Fault Detection | field wiring open or < 50 Ω and test current < 2 mA |
Applications
The KCD2-SCD-Ex1.ES is specifically designed for analog output and SMART field device driving in hazardous area installations:
| Industry | Application |
|---|---|
| Oil & Gas | Driving I/P converters for pneumatic valve positioning on offshore platforms, refineries, and pipelines in Zone 0/1 areas |
| Chemical Processing | Controlling SMART valve positioners and electrical actuators in explosive atmospheres |
| Pharmaceutical | SIL 3 certified current driver for safety-related batch control with solvent handling equipment |
| Power Generation | Driving turbine governor valves, boiler feedwater control valves with Ex ia protection |
| Mining | Certified [Ex ia Ma] I for underground mining equipment requiring intrinsic safety |
| Marine & Offshore | DNV-approved for shipbuilding – marine control systems with hazardous area valve actuation |
Typical Field Devices Connected
- SMART I/P (current-to-pressure) converters
- SMART valve positioners with HART communication
- Electrical actuators in hazardous areas
- Solenoid valves in explosive atmospheres
Compliance & Certifications
| Certification | Status | Details |
|---|---|---|
| SIL 3 | Certified | IEC/EN 61508 – Highest rating for signal conditioners |
| ATEX (Ex ia) | Certified | CESI 20 ATEX 016 X – II (1)G [Ex ia Ga] IIC |
| ATEX (Ex ec) | Certified | CESI 20 ATEX 017 X – II 3G Ex ec IIC T4 Gc |
| IECEx | Certified | IECEx CES 20.0009X – [Ex ia Ga] IIC, Ex ec IIC T4 Gc |
| DNV Marine | Approved | TAA00001WX – Marine and offshore applications |
| UL/cULus | Listed | E106378, Control Drawing 116-0471 |
| CE | Compliant | EMC Directive 2014/30/EU |
| NAMUR | Compliant | NE 21:2017 |
| RoHS | Compliant | Lead-free |
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Company
Shenzhen Hengyo Power Technology Co., Limited
Location
Room 2407, B Block No.145 Chengshi Zhuchang Bld, Bagua 2nd Rd, Futian Dist. Shenzhen City, China 518029
Contact Person
Vivian Chan