Pepperl+Fuchs KCD2-SCD-1 Current Driver | Signal Conditioner

SMART KCD2-SCD-1 Current Driver Signal Conditioner

The SMART KCD2-SCD-1 is a precision current driver for process control. This 1-channel signal conditioner provides accurate current output. It supports HART communication with I/P converters and valve positioners. The KCD2-SCD-1 ensures reliable operation in safety-critical applications up to SIL 2.

Product Identification

• Manufacturer: Pepperl+Fuchs
• Model Number: KCD2-SCD-1 current driver
• Product Type: 1-Channel Signal Conditioner
• Primary Function: Current driving and conditioning
• Safety Rating: SIL 2 per IEC 61508 standard
• Housing Width: 12.5 mm compact design

Power Supply Specifications

• Supply Voltage: 24 V DC nominal (19-30 V DC range)
• Connection: Power Rail or terminals 9+, 10-
• Rated Current: ≤ 30 mA power consumption
• Power Dissipation: ≤ 600 mW heat generation
• Power Consumption: ≤ 700 mW total usage
• Ripple Tolerance: ≤ 10 % input ripple

Input Specifications

• Signal Type: Analog 4-20 mA input
• Connection: Terminals 5-, 6+ (control side)
• Input Current: 4-20 mA (limited to ~30 mA)
• Input Voltage: <23V or <27V configurable
• Voltage Drop: ~6V at 20 mA (<23V mode)
• Input Resistance: >100 kΩ with open wiring

Output Performance

• Output Current: 4-20 mA precision signal
• Load Capacity: 0-650 Ω maximum load
• Output Voltage: ≥13 V at 20 mA output
• Connection: Terminals 1+, 2- (field side)
• Output Ripple: 20 mV rms maximum
• Accuracy: 0.1 % of full scale

Safety & Features

• Safety Level: SIL 2 per IEC 61508
• Lead Breakage Monitoring: Wire break detection
• HART Support: I/P converter and valve positioner
• Diagnostics: Fault detection capabilities
• Isolation: Input/output separation

Installation Guidelines

• Mount on standard DIN rail in control cabinet
• Connect 24V DC power via Power Rail or terminals
• Wire 4-20 mA input signal to control side terminals
• Connect output to field device (I/P, positioner)
• Configure voltage mode (<23V or <27V) as needed
• Verify grounding and shielding for noise immunity

Frequently Asked Questions (FAQ)

What does SIL 2 certification mean for this device?

The KCD2-SCD-1 meets Safety Integrity Level 2 requirements for use in safety instrumented systems.

Can this driver power two valves simultaneously?

No, it is a 1-channel driver designed for single load devices up to 650 Ω.

How does lead breakage monitoring work?

It continuously monitors wire integrity and signals if a connection breaks.

What maintenance is required?

Periodic calibration check and visual inspection of connections are recommended.

For technical specifications or to order the KCD2-SCD-1, contact sale@etowonauto.com.

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