Fisher LCP100

Technical Specifications

• Power Supply Options: Loop-powered (max 0.126W continuous) or external 24 V DC auxiliary power
• Maximum Cable Distance to DVC6200 SIS: 314 meters with 18AWG shielded cable (100,000 pF total capacitance limit)
• Operating Ambient Temperature Range: -40°C ~ +65°C
• Storage Temperature Range: -50°C ~ +85°C
• Enclosure Protection Rating: IP66 dust and water ingress resistance
• Hazardous Area Certifications: ATEX Ex ia IIB T4 Ga, IECEx Ex ia IIB T4 Ga, CSA Class I Div 1 Groups ABCD T4
• Conduit Connection Threads: 3/4 NPT internal thread or M20 metric conduit adapter
• Internal Wiring Terminal Gauge Compatibility: 14 AWG ~ 26 AWG shielded instrument wire
• Terminal Torque Specification: 0.5 N·m (4.5 in-lbs)
• Total Unit Weight: 2.2 kg (4.9 lbs)

Function Features

1. Local manual open/close override buttons for emergency shutdown valve on-site operation
2. Dedicated partial stroke test (PST) pushbutton to initiate SIS valve diagnostic testing without full process shutdown
3. Manual safety reset switch to restore valve normal operation after ESD trip event
4. Multi-color LED status indicators displaying valve travel position, fault alarm and PST active state
5. Direct HART communication bus interface to DVC6200 SIS positioner for real-time valve diagnostic data transmission

Performance Parameters

• PST test completion cycle time: 10 seconds fixed factory logic
• LED indicator fault response latency: ≤150 ms from DVC6200 SIS signal input
• HART communication baud rate: 1200 bps standard instrument protocol
• Continuous loop power operation without auxiliary 24V DC supply: Full functional capacity maintained
• MTBF: 180,000 hours at 40°C nominal plant ambient temperature

Material Composition

• Outer enclosure housing: Filled reinforced polyester corrosion resistant composite
• Internal terminal base: Glass-filled PA66 flame retardant plastic
• Pushbutton and switch components: Industrial-grade polycarbonate with silicone sealing boots
• Internal wiring terminals: Tin-plated copper alloy screw terminals
• Enclosure sealing gasket: Neoprene weather-resistant rubber
• Mounting hardware: 316L stainless steel bolts and mounting brackets

Structural Characteristics

• Rectangular single-chamber sealed enclosure with hinged transparent polycarbonate viewing cover
• Front panel membrane-mounted manual control pushbuttons and status LED array
• Bottom enclosure dual conduit entry ports for field instrument wiring routing
• Internal dedicated terminal blocks for HART loop, auxiliary 24V DC power and safety ground
• External stainless steel wall/pipeline mounting bracket pre-installed
• Internal power selector switch to toggle between loop-powered and external 24V DC operating modes

Working Principle

Advantage Highlights

1. Global hazardous area explosion-proof certifications for oil, gas and petrochemical SIS safety applications
2. Dual power supply modes enable installation on both loop-powered and externally supplied SIS valve circuits
3. IP66 fully sealed enclosure withstands outdoor plant rain, dust and chemical washdown exposure
4. Integrated PST function eliminates need for portable field communicator to execute valve safety diagnostics
5. Plug-and-play HART compatibility with all DVC6200 SIS digital valve controllers without additional signal converters

Applicable Industries

Installation Requirements

1. Mount enclosure with conduit entry ports oriented vertically downward for condensate self-draining per factory specification
2. Torque internal wiring terminal screws to fixed 0.5 N·m torque rating to avoid loose high-resistance contacts
3. Install shielded HART instrument cable with single-point safety ground at LCP100 enclosure terminal only
4. Maintain minimum 1-meter separation distance from high-voltage electrical motor and transformer enclosures
5. Use certified explosion-proof conduit fittings for wiring entry in Class I Div 1 hazardous classified zones

Usage Precautions

1. Do not open transparent enclosure cover in hazardous classified explosive atmospheres during live circuit operation
2. Verify power selector switch matches installed power supply type before energizing unit
3. Complete full HART communication loop isolation before removing enclosure cover for wiring maintenance
4. Inspect neoprene sealing gasket annually for cracking or compression set to preserve IP66 ingress rating
5. Execute monthly PST test cycle to maintain SIS safety system functional compliance with IEC 61508 standards