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Nelson™ PN CM2201

SINGLE POINT CONTROLLER

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Features

  • The circuit management system is housed in a NEMA 4X durable molded fiberglass polyester enclosure that can be wall or rack mounted. The system is provided with dual pole solid-state heater switching and is environmentally hardened for use in various pla
  • Easy to use interface: The 2 line, 16 characters/row, alphanumeric LCD display enables the use of English language prompts for set point entry and operation. There are no cryptic codes or key press combinations to remember
  • On/off or proportional control: The desired control mode can be easily selected via the front panel user interface
  • Ground fault alarm and trip settings: Separate alarm and trip settings for ground fault interrupt allow alarming of developing faults prior to circuit interruption
  • Dual RTD input: The optional second RTD can easily be configured in a variety of ways, including working with one RTD/two RTDs and high temperature cutout
  • Programmable auto test cycle: The user can select an interval from 1 to 24 hours to have the unit automatically check the heater operating current and ground fault conditions. This allows problems to be detected and fixed before the heating system is nee
  • Host communications: The RS-485 Modbus™ RTU communications capability is included as a standard feature. There are no expensive ""daughter boards"" or firmware updates required
  • LCD display is 2 Line, 16 characters per row
  • 30 A max (resistive load only) current rating with 0.1 to 40 Amp current monitoring
  • 100 Vac to 277 Vac voltage range with 10 mA to 500 mA ground fault monitoring

Specifications

Certifications and Compliances
CSA Certified: Hazardous (Classified) Locations
CSA
Class I, Division 2, Groups A, B, C, D; Class I, Zone 2, Groups IIC; Temperature Code T4 (+135 °C)
Enclosure
NEMA Type 4X
Material
Molded fiberglass polyester
Ambient Temperature
-40 °C to + 40 °C (-40 °F to +104 °F); Start up at -20 °C (-4 °F)
Temperature Input
Range: -50 °C to +500 °C (-58 °F to 932 °F). Accuracy: ±2 °C. Repeatability: ±1 °C. RTD: 100 ohm platinum, 3W RTD, (lead compensated up to 20 ohms). RTD Configuration: single, backup, highest, lowest, average or high
Heater Switching
Configuration: Two-pole, dual SSR per phase, 800 Amp, 1 cycle inrush. Ratings: 100-277 Vac, 30 Amp continuous. Line Frequency: 50 or 60Hz. Current Measurement: 0.1 to 40A 3% ±0.1 Amp. GF Measurement: 10 to 500 mA 5% ±2 mA. Voltage Measureme
Control Power
Power Requirement: Control power from heater voltage, 110-277 Vac
Communications
Port: (1) RS-485. Protocol: Modbus™ RTU. Transmission Rate: up to 115 Kbps. Wiring: 2-wire, shielded, twisted pair.
Measured Values
Temperature (Min. and Max.): -50 to +500 °C (-58 to +932 °F). Heater Current: 0.1 to 30 Amp. Ground Fault Current: 10 to 500 mA. Min. Heater Voltage: 90 Vac. Max. Heater Voltage: 305 Vac.
User Interface
16-character x 2-line LCD alphanumeric display. Controller parameters password protected. Panel Indicators: Power/heater on. Serial communication active. System failure. Process alarm. Keypad: 9 polyester keys. Actual, alarm, program, reset. Select up, s
Environment
Operating temperature: -40 °C to +40 °C, starting at -20 °C. Conformal Coating: Boards conformal coated for hostile environments
Enclosure
10H x 8W x 6D, NEMA Type 4X molded fiberglass polyester enclosure. Quick release latches to open door
Alarm Output
Alarm: Normally Open contacts. One DC opto-isolated contact. One AC opto-isolated contact. Alarm Rating: DC contact, 30 Vdc/100 mA max. AC contact: 24-277 Vac @ 0.5A max. Alarm Output: LED Indication
Alarm Function
Temperature: High temperature alarm/low temperature alarm. Current: Low current alarm/high current alarm. Ground Fault Current: Ground fault current alarm/ground fault current trip. Voltage: High voltage alarm/low voltage alarm. Hardware: Self-check fail

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