Elexant 4020i advanced electronic control unit for hazardous areas - nVent

nVent RAYCHEM Elexant 4020i electronic heat tracing control unit.  Elexant 4020i series is a range of compact, full featured, touch screen based, single point heat tracing controllers, with ground fault protection. It provides control and monitoring for both freeze protection and process temperature maintenance

Elexant 4020i advanced electronic control unit for hazardous areas - nVent


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Product details

The nVent RAYCHEM Elexant 4020i electronic heat tracing control unit.  Elexant 4020i Series is a range of compact, full featured, touch screen based, single point heat tracing controllers, with ground fault protection. It provides control and monitoring for both freeze protection and process temperature maintenance. Available with either an electromechanical relay (EMR) for use in non hazardous areas, or solid state relay (SSR) for use in both non hazardous and ATEX/ IECEx Zone 2, Class I Div. 2  Zone 2 hazardous locations. Capable of controlling up to 63A at 690 V a.c. 

Available in 6 variants:

  1. Elexant 4020i-Mod-IS (4020i Control Module, Single Phase, IS Barriers on RTD Inputs)
  2. Elexant 4020i-Mod-IS-PRF (4020i Control Module, Single Phase, IS Barriers on RTD Inputs, ProfiBus protocol)
  3. Elexant 4020i-Mod-IS-LIM (4020i Control Module, Single Phase, IS Barriers on RTD Inputs, Safety Limiter)
  4. Elexant 4020i-Mod-IS-LIM-PRF (4020i Control Module, Single Phase, IS Barriers on RTD Inputs, Safety Limiter and ProfiBus protocol)
  5. Elexant 4020i-Mod-3P-IS (4020i Control Module, Three Phase, IS Barriers on RTD Inputs )
  6. Elexant 4020i-Mod-3P-IS-PRF (4020i Control Module, Three Phase, IS Barriers on RTD Inputs, Safety Limiter and ProfiBus protocol)


Features & Benefits

  • ready to install, program and operate 
  • control up to 63A, 690 V a.c.
  • measures temperature of up to three directly connection sensors
  • line sensing, ambient sensing and proportional ambient sensing control (PASC) capabilities 
  • equipped with RS485 and Ethernet ports, supports MODBUS/RTU, MODBUS /TCP and ProfiBus protocols
  • suitable for panel mounting on 35 mm DIN rails


  • TECHNICAL DETAILS
    SPECIFICATIONS
    Applicationpipe freeze protection and temperature maintenance
    Area of Usenon-hazardous area (EMR variants)
    hazardous areas Zone 2 (SSR or purged panel variants)
    Ambient temperature range-40°C to +70°C
    Storage temperature range-55°C to +85°C
    Supply voltage100 V a.c. to 254 V a.c. ±10% 50/60 Hz
    Power consumption< 24W
    Electromagnetic compatibilityIEC 61326-1:2012 / EN 61326-1:2013
    Control
    Relay typedouble-pole, mechanical (EMR variants) 
    double-pole, solid-state (SSR variants)
    Maximum voltage690 V a.c. 50/60 Hz
    Maximum current
    63A continuous (limited by the rating of the output device)   
    Control algorithmsOn/Off, PASC, always on, always off (EMR variants)
    On/Off, proportional, PASC, always on, always off (SSR variants)
    Control range-200°C to 700°C
    Monitoring
    Ethernet10/100 Base-T
    TemperatureLOW alarm range: -200°C to 700°C
    HIGH alarm range: -200°C to 700°C
    Ground faultAlarm range: 10 mA to 500 mA or OFF
    Trip range: 10 mA to 500 mA or OFF
    Current
    LOW alarm range: 0.1 A to 100 A or OFF
    HIGH alarm range: 0.1 A to 100 A or OFF
    Power limit range: 8 W to 30 kW
    VoltageLOW alarm range: 80 V a.c. to 300 V a.c. or OFF
    HIGH alarm range: 80 V a.c. to 300 V a.c. or OFF
    ResistanceLOW resistance range: 1% to 100% of deviation from nominal
    HIGH resistance range: 1% to 250% of deviation from nominal
    Autocycle1 to 750 hours
    Temperature Sensor Inputs
    Qty3.  Each can be individually set to one of the types below;
    100Ω platinum RTD3-wire, α=0.00385 ohms/ohm/°C
    -200°C to 700°C (-328°F to 1292°F), ± 1°C
    can be extended with a 3-conductor shielded cable of 20Ω maximum per conductor
    100Ω nickel iron RTD2-wire, α=0.00599 ohms/ohm/°C
    -73°C to 350°C (-99°F to 662°F), ± 1°C
    can be extended with a 2-conductor shielded cable of 20Ω maximum per conductor
    100Ω nickel RTD2-wire, α=0.00618 ohms/ohm/°C
    -70°C to 250°C (-94°F to 482°F), ± 1°C
    can be extended with a 2-conductor shielded cable of 20Ω maximum per conductor
    Thermocouplerequire external 4-20 mA converter
    4-20 mA current loop,  ± 0.05 mA, 24 V d.c. loop power
    The Elexant 4020-IS variants are equipped with intrinsic safety barriers at the RTD inputs. RTD intrinsic safety associated apparatus entity parameters:
    Uo (maximum output voltage): 5.4 V
    Io (maximum output current): 0.83 mA
    Po (maximum output power): 0.449 W
    La (maximum external inductance): 2 mH
    Ca (maximum external capacitance): 65 uF
    Digital Inputs
    Quantitytwo multi-purpose inputs for connection to external dry (voltage free) contact or DC voltage
    can be configured for Hand-Off-Auto (HOA) operation
    Rating100 Ω max loop resistance or 5-24 V d.c. @ 1mA maximum
    Outputs
    Control Relayform-A wet contact: 100 V a.c. to 277 V a.c. 50/60 Hz
    DC (SSR) Control Output12 V d.c. @ 215 mA max.
    Analog (Liner Phase Control)0-10 V d.c. @ 215 mA max.
    Alarm relayform-C dry contact: 100 V a.c. to 277 V a.c. 3A 50/60 Hz
    can be configured for Hand-Off-Auto (HOA) operation
    Auxiliary24 V d.c. max load of 250 mA @ 40°C, de-rated to 165 mA @ 60°C
    Configuration / programming
    Methodtouch screen display
    Units°C  or °F
    Idle displaysensor temperature, control temperature, heater current, voltage, power, alarm status
    LEDsstatus: heater on, alarm conditions, receive / transmit data
    Memorynon-volatile, restored after power loss, checksum data checking
    Stored usage parametersminimum and maximum process temperature
    maximum ground fault current
    minimum and maximum voltage
    maximum heater current
    power accumulator
    contactor cycle count
    total time in use
    heater on time
    Alarm conditionslow / high temperature
    low / high current
    low / high voltage
    low / high resistance 
    ground-fault alarm / trip
    RTD failure
    loss of programmed values
    EMR or SSR failure
    equipment protection trip
    attached device alarm
    contactor lifetime exceeded
    Alarm modesnormal (solid on), flash (on & off), toggle (re-ring new alarms)
    Control algorithms*-EMR variants: On/Off, PASC, always on, always off
    *-SSR variants: On/Off, proportional, PASC, always on, always off
    Equipment protectionground fault trip, low / high temperature limit, Soft-Start features, (heat trace output limiting, SSR overcurrent protection, circuit breaker nuisance trip prevention)
    Load sheddingUp to 8 zones, with temperature fail safe and communication timeout (requires nVent RAYCHEM Supervisor)
    ProfilesBuilt-in default setting profiles for common heat trace applications. Up to two additional user configurations can be saved and reloaded. Saved configurations can be saved to and loaded from a USB thumb drive
    NetworkAutomatic network configuration with DHCP, or static IP configuration
    Firmware updatesUser via USB thumb drive
    Multi language interfaceEnglish, French, German, Spanish, Russian
    OtherPassword protection, text tags / identifiers for controller and temperature sensors
    Communication 
    Communication portRS-485 and Bluetooth Class 1
    Type2-wire RS-485
    CableOne shielded twisted pair (not included)
    Lengthup to 1,200 m (4000 ft) maximum
    Quantityup to 247 devices per port
    Data rate9600, 19200, 38400, 57600 baud
    ParityNone, even, odd
    Stop bits0, 1, 2
    Tx delay0 - 5 seconds
    ProtocolModbus RTU,
    Connection terminals
    Power supply inputscrew terminals 0.2 mm2 to 16.8mm2
    Heat cable outputscrew terminals 0.2 mm2 to 16.8mm2
    Ground (earth)screw terminal 0.2 mm2 to 16.8 mm2
    Torque range1.5  -  1.5 Nm
    Sensor / Other terminalsCage clamp terminals 0.08 mm2 to 3.3 mm2


  • APPROVALS
    APPROVALS


  • DIMENSIONS
    DIMENSIONS (mm) AND WEIGHT (kg)
    Elexant variant4020i4020i-IS4020i-3P4020i-3P-IS
    Width 175.3175.3175.3175.3
    Height180.9182.7180.9182.7
    Depth137.8137.8137.8137.8
    Weight1.21.31.31.3
    Mounting lug holes2 x M42 x M42 x M42 x M4
    Mounting centres134134134134

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