SECOP 105N4866 - Main Features of Extended Controllers

XT Controllers for NLV-CN Compressors
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IP43 housing for maximum environmental protection
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8 relay outputs for controlling fans, heaters, light, valves, and alarm output
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4 temperature sensors with weighting for temperature control, defrosting,
condenser sensing, and HACCP
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4 digital inputs for door sensors, blind curtain, coordinated defrosting, light
control, and main switch
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2 analog inputs for pressure transducers
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2 analog outputs for expansion valve control or light intensity
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5 application sets of parameters for multi-function cabinets
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Motor control for variable speed brushless motors
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PID capacity control for precise cooling capacity control
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Management of minimum and maximum run times
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Alarm indication on the display, buzzer, via the Modbus interface, or via
relay
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Display control (optional)
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Data logging system to save events in the memory of the control unit
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Hot gas defrost system with algorithms to reduce risk of liquid return to
compressor
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Speed control evaporator and condenser fans
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Modbus communication for supermarket monitoring systems
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HACCP temperature reporting (not approved yet)
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Supported by Tool4Cool
®
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Firmware upgrading through Modbus
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Power-factor corrector to comply with EU regulations
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Available for multi-voltage (100–127 V + 220–240 V) operation
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Backwards compatible connection to 105N46xx series controllers
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CCC-, UL-, VDE-approved with annex AA
The controller also features integrated monitoring of the operating conditions
and takes corrective action to prevent any damage to the electronics, which
1.5.
Main Features
could potentially occur in the event of an overload.
The following monitoring functions ensure that operating conditions remain
within the acceptable range:
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Temperature sensor on the printed circuit boards to monitor the
temperature of the electronics in the enclosure
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Temperature sensor to monitor temperature in the motor inverter
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Monitoring for correct motor speed; motor speeds outside the permitted
range can damage the valves and bearings
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Inadequate line voltage due to fluctuations in the line supply
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Locked rotor caused by excessive pressure
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Defrost valve and temperature sensor defects
Other advantages:
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Minimal start current required due to soft start of compressor
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Controlled restart
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Control of the pressure equalization time