Carrier WeatherExpert 48N2 Controls, Start-up, Operation, Service And Troubleshooting Instructions

Also see for WeatherExpert 48N2: Installation instructions Installation instructions Controls, start-up, operation, service, and troubleshooting Installation instructions

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Carrier WeatherExpert 48N2 Controls, Start-up, Operation, Service And Troubleshooting Instructions Manual pdf 95 page image

95Password Enable (PAS.E) — This variable enables or dis-ables the use of a password. The password is used to restrictuse of the control to change configurations.Service Password (PASS) — This variable is the 4-digit nu-meric password that is required if enabled.VFD Configurations — There are two sub-menus underthe Configuration menu, ConfigurationIAQS.VFD andConfigurationIAQE.VFD. These configurations are forthe supply fan or optional exhaust fan variable frequencydrives (VFDs). These sub-menus contain the configurations re-quired for the Supply Fan and Exhaust Fan VFDs. This sectiondefines the configurations in these sub-menus. See Table 66and 67. Further information on VFD configurations can befound in Appendix D.SUPPLY FAN VFD CONFIGURATION — The sub-menuthat contains these configurations is located at the local displayunder ConfigurationIAQS.VFD.VFD1 Nominal Motor Volts (N.VLT) — This configurationdefines the nominal motor voltage. This value must equal thevalue on the motor rating plate. This value sets the maximumdrive output voltage supplied to the motor.NOTE: The VFD cannot supply the motor with a greater volt-age than the voltage supplied to the input of the VFD. Power tothe VFD must be cycled in order for a change to this configu-ration to take effect.VFD1 Nominal Motor Amps (N.AMP) — This configura-tion defines the nominal motor current. This value must equalthe value defined in the Supply Fan Motor LimitationsTable 21. Power to the VFD must be cycled in order for achange to this configuration to take effect.VFD1 Nominal Motor Freq (N.FRQ) — This configurationdefines the nominal motor frequency. This value must equalthe value on the motor rating plate. This value sets the frequen-cy at which the output voltage equals the Nominal Motor Volts(N.VLT). Power to the VFD must be cycled in order for achange to this configuration to take effect.VFD1 Nominal Motor RPM (N.RPM) — This configura-tion defines the nominal motor speed. This value must equalthe value on the motor rating plate. Power to the VFD must becycled in order for a change to this configuration to take effect.VFD1 Nominal Motor HPwr (N.PWR) — This configura-tion defines the nominal motor power. This value must equalthe value on the motor rating plate. Power to the VFD must becycled in order for a change to this configuration to take effect.VFD1 Motor Direction (M.DIR) — This configuration setsthe direction of motor rotation. Motor direction change occursimmediately upon a change to this configuration. Power to theVFD need NOT be cycled for a change to this configuration totake effect.VFD1 Acceleration Time (ACCL) — This configuration setsthe acceleration time from zero to maximum output frequency.Power to the VFD must be cycled in order for a change to thisconfiguration to take effect.VFD1 Deceleration Time (DECL) — This configuration setsthe deceleration time from maximum output frequency to zero.Power to the VFD must be cycled in order for a change to thisconfiguration to take effect.VFD1 Switching Frequency (SW.FQ) — This configurationsets the switching frequency for the drive. Power to the VFDmust be cycled in order for a change to this configuration totake effect.EXHAUST FAN VFD CONFIGURATION — The sub-menu that contains these configurations is located at the localdisplay under ConfigurationIAQE.VFD.VFD2 Nominal Motor Volts (N.VLT) — This configurationdefines the nominal motor voltage. This value must equal thevalue on the motor rating plate. This value sets the maximumdrive output voltage supplied to the motor.NOTE: The VFD cannot supply the motor with a greater volt-age than the voltage supplied to the input of the VFD. Power tothe VFD must be cycled in order for a change to this configu-ration to take effect.VFD2 Nominal Motor Amps (N.AMP) — This configura-tion defines the nominal motor current. This value must equalthe value defined in:• the High-Capacity Power Exhaust Systems Motor Limi-tations table (Table 22) if BP.CF=4• the Supply Fan Motor Limitations table (Table 21) ifBP.CF=5• the Optional VFD Power Exhaust Motor Limitationstable (Table 68) if BP.CF=3Table 65 — Display ConfigurationTable 66 — Supply Fan VFD Configuration*This default is model number dependent.ITEM EXPANSION RANGE UNITS CCN POINT DEFAULTTEST Test Display LEDs ON/OFF TEST OffMETR Metric Display ON/OFF DISPUNIT OffLANG Language Selection 0-1(multi-text strings) LANGUAGE 0PAS.E Password Enable ENABLE/DISABLE PASS_EBL EnablePASS Service Password 0000-9999 PASSWORD 1111ITEM EXPANSION RANGE UNITS CCN POINT DEFAULTS.VFD SUPPLY FAN VFD CONFIGN.VLT VFD1 Nominal Motor Volts 0 to 999 Volts VFD1NVLT 460*N.AMP VFD1 Nominal Motor Amps 0 to 999 Amps VFD1NAMP 55.0*N.FRQ VFD1 Nominal Motor Freq 10 to 500 Hz VFD1NFRQ 60N.RPM VFD1 Nominal Motor RPM 50 to 30000 RPM VFD1NRPM 1750N.PWR VFD1 Nominal Motor HPwr 0 to 500 HP VFD1NPWR 40*M.DIR VFD1 Motor Direction 0=FWD, 1=REV VFD1MDIR 0ACCL VFD1 Acceleration Time 0 to 1800 sec VFD1ACCL 30DECL VFD1 Deceleration Time 0 to 1800 sec VFD1DECL 30SW.FQ VFD1 Switching Frequency 0=1kHz, 1=4kHz, 2=8kHz, 3=12kHz VFD1SWFQ 2