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CHIGO CMV VRF Control System

2013 CHIGO Product. CHIGO CMV VRF Control System. VRF control system. VRF system design principle. New CMV outdoor units control system. New CMV indoor units control system. VRF control system. VRF system design principle. VRF system design principle. Module design.

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CHIGO CMV VRF Control System

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  1. 2013 CHIGO Product CHIGO CMV VRF Control System

  2. VRF control system VRF system design principle New CMV outdoor units control system New CMV indoor units control system

  3. VRF control system VRF system design principle

  4. VRF system design principle Module design. Indoor unit’s PCB(Printed Circuit Board) receives and collects the information from users (setting temperature, fan speed etc.) and environment (indoor coil temperature, indoor temperature etc.), and organize them to control the action of relevant parts such as EXV, then transmits them to outdoor master unit. Outdoor master unit works out the best running parameters and sends the corresponding orders to slave outdoor units and indoor units.

  5. VRF system design principle Water-level switch temperature sensor • Power setting • Address setting • Indoor fan speed • Evaporator off • Evaporator demand • EXV opening degree • Capacity adjustment • Outdoor fan speed • Protection • Compressor start • Mode control • Address setting • Function check Indoor chips Outdoor chips temperature sensor Pressure sensor Indoor signal Indoor fan speed Compressor signal Swing fan 4-way valve signal RS-485 Water pump Outdoor fan speed Auxiliary heater EXV opening degree Outdoor signal EXV opening degree Function check Display board Digital pipe display

  6. VRF system design principle Temperature sensors definition T1: Room temperature T2: Temperature of middle evaporator T2B: Temperature of evaporator outlet T average: Mean value of T2B or T2 T3: Temperature of condenser outlet T4: Ambient temperature Ts: Setting temperature T7: Discharge temperature of DC inverter compressor T7C1: Discharge temperature of fixed compressor 1 T7C2: Discharge temperature of fixed compressor 2

  7. VRF control system New CMV outdoor units Control system

  8. New CMV system 1.Control principle Communication (RS-485) Indoor unit Main chip LEDdisplay Address setting (ENC2) Capacity setting (ENC1) Communication Module chip Invertermodule EXV Compressor Solenoid valve Protection Outdoor fan Compressor current Order Temperature sensor Forcedcooling (SW1) Function check (SW2)

  9. New CMV system 2.Outdoor electrical box IPM modular Filter capacitor Main PCB Display tube 、Check button、Forcing cooling button Communication terminal Function Switch Anti-lightning filter board DC Fan Motor IPM Power Supply terminal Fixed Compressor Contractor

  10. 3. Key components New CMV system ODU central controller& Ammeter Fan drive 1 Fan drive 1 Low pressure Hi Pressure T3 T4 sensor Hi pressure sensor IDU COMM ODU COMM INV compressor & FIX compressor exhaust temp sensor Module COMM Transformer output F1 F2 compressor & power & heater control terminal 3-phase power check EXV control SV5 SV6 & 4-way valve control SV1 SV2 SV3 SV4 control SV7 SV8 control Transformer input

  11. 3. Key components New CMV system Digital tube (LED display) SW3: Forced cooling button SW4:Night time selection switch SW5:Static pressure switch SW9:Mode selection switch SW8:Night noise control and automatically assign address switch SW7:Start time switch SW2: Function check button

  12. 3. Key components New CMV system Address setting

  13. 3. Key components New CMV system Capacity setting

  14. 3. Key components New CMV system SW3: Forced cooling button SW3

  15. 3. Key components New CMV system SW2&LEDdisplay SW2 Displaysthesystemoperationparameterswhen the check button is pressed. Displays the number of online indoor units when system is standby. Displays the operationfrequencyof inverter compressor when it starts. Displays ‘dF’ when system is running the defrost program. Displays ‘d0’ when system is running the oil return program. Displays the error code when system is malfunction or under protection.

  16. 3. Key components New CMV system System operation parameters

  17. 3. Key components New CMV system

  18. 3. Key components New CMV system SW4Night set

  19. 3. Key components New CMV system SW5Static pressure set

  20. 3. Key components New CMV system SW9Mode set

  21. 3. Key components New CMV system SW8Night and address set

  22. 3. Key components New CMV system SW7Time set

  23. 3. Key components New CMV system

  24. 3. Key components New CMV system Error codes

  25. 3. Key components New CMV system Error codes

  26. 3. Key components New CMV system Error codes

  27. VRF control system New CMV Indoor units Control system

  28. Indoor units 1.Control principle Communication (RS-485) Outdoor unit Controller signal Capacity setting Temperaturesensor Swing motor Waterpump EXV Fan speed LED lights LED display MCU Address setting EEPROM Read Communication (RS-485) Central Controller *EEPROM(E2PROM): Electrically Erasable Programmable Read-Only Memory

  29. Indoor units 2. Indoor units PCB Wall-mounted Wall-mounted Ceiling floor&4-way cassette Ducted

  30. Indoor units 2. Indoor units PCB 220V AC N port Transformer input port Fan motor output port Transformer output port 220V AC L port Temperature sensor port Communicate port of P Q E Download port EXV port Remote control port Display board terminal

  31. Indoor units 3. Key component SW1

  32. Indoor units 3. Key component SW2

  33. Indoor units 3. Key component SW2:Third bit and fourth bit

  34. Indoor units 3. Key component SW2:Fifth bit and sixth bit

  35. Indoor units 3. Key component SW2:Seventh bit and eighth bit

  36. Indoor units 3. Key component SW3

  37. Indoor units 4. Display board Duct/Ceiling floor/Cassette type indoor units Defrost lamp Run lamp Protection lamp Timer lamp Manual Button Buzzer Infrared receiver

  38. Indoor units 4. Display board Duct/Ceiling floor/Cassette type indoor units Reset power, run lamp flash slowly; In standby, all the lamps off; Units running, run lamp on; Anti-cold or defrost, defrost lamp on; Timer function, timer lamp on. Indoor unit malfunction will show on display board

  39. Indoor units 4. Display board Duct/Ceiling floor/Cassette type indoor units Manual button Press the button for 5 seconds, the lamps show the indoor unit’s address. Press the button for 10 seconds, the lamps show the indoor unit’s capacity. Address:

  40. Indoor units 4. Display board Wall mounted indoor units Digital display Infrared receiver Defrost lamp Timer lamp Run lamp

  41. Indoor units 4. Display board Wall mounted indoor units Check procedure In standby, digital display “--”, run lamp flash slowly; Turn off, digital display “--”, run lamp off; Turn on, run lamp on, in cooling/heating mode, digital display setting temperature, in fan mode, digital display indoor temperature; In defrosting , defrost lamp on; In timer, timer lamp on.

  42. Indoor units 4. Display board Indoor unit malfunction will show on digital display

  43. Thank you!

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