Daikin EWADC16C-XS [6/96] Electrical control panel
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Daikin EWADC16C-XS [6/96] Electrical control panel

Daikin EWADH14C-SR [6/96] General characteristics
6
GENERAL CHARACTERISTICS
Electrical control panel
Power and control are located in the main panel that is manufactured to ensure protection against all
weather conditions. The electrical panel is IP54
and (when opening the doors) internally protected with plexiglas panel against possible
accidental contact with electrical components (IP20). The main panel is fitted with a main switch interlocked door.
Power Section
The power section includes compressors
circuit power supply.
MicroTech III controller
MicroTech III controller is installed as standard; it can be used to modify unit set
-
points and check control
parameters. A built-in
display shows chiller operating status plus temperatures and pressures of water, refrigerant and air,
programmable values, set-
points. A sophisticated software with predictive logic, selects the most energy efficient combination of
compressors, EEXV and condenser fans to keep stable operating conditions to maximise chiller energy efficiency and reliability.
MicroTech III is able to protect critical components based on external signs from its system (such as motor temperatures, ref
rigerant
gas and oil pressu
res, correct phase sequence, pressure switches and evaporator). The input coming from the high pressure switch
cuts all digital output from the controller in less than 50ms, this is an additional security for the equipment.
Fast program cycle (200ms) for a
precise monitoring of the system. Floating point calculations supported for increased accuracy in
Pressure / Temperature conversions.
Control section
-
main features
• Management of the compressor stepless capacity and fans modulation.
• Chiller enabled to work in partial failure condition.
• Full routine operation at condition of:
- high ambient temperature value
- high thermal load
- high evaporator entering water temperature (start-up)
• Display of evaporator entering/leaving water temperature.
• Display of Outdoor Ambient Temperature.
• Display of condensing-evaporating temperature and pressure, suction and discharge superheat for each circuit.
• Leaving water evaporator temperature regulation (temperature tolerance = 0,1°C).
• Compressor and evaporator pumps hours counter.
• Display of Status Safety Devices.
• Number of starts and compressor working hours.
• Optimized management of compressor load.
• Fan management according to condensing pressure.
• Re-start in case of power failure (automatic / manual).
• Soft Load (optimized management of the compressor load during the start-up).
• Start at high evaporator water temperature.
• Return Reset (Set Point Reset based on return water temperature).
• OAT (Outside Ambient temperature) Reset.
• Set point Reset (optional).
• Application and system upgrade with commercial SD cards.
• Ethernet port for remote or local servicing using standard web browsers.
• Two different sets of default parameters could be stored for easy restore.
Safety device / logic for each refrigerant circuit
• High pressure (pressure switch).
• High pressure (transducer).
• Low pressure (transducer).
• Fans circuit breaker.
• High compressor discharge temperature.
• High motor winding temperature.
• Phase Monitor.
• Low pressure ratio.
• High oil pressure drop.
• Low oil pressure.
• No pressure change at start.
System security
• Phase monitor.
• Low Ambient temperature lock-out.
• Freeze protection.
Regulation type Proportional + integral + derivative regulation on the evaporator leaving water output probe.

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