Danfoss VLT HVAC Drive FC 102 Design Manual

Also see for VLT HVAC Drive FC 102: Operating instructions Service guide Programming guide Installation guide Installation guide

Contents

in 5-19 Terminal 37 Safe Stop), an unexpected combinationis activation of safe torque off without the X44/10 beingactivated. Table 8.25 summarizes the unexpectedcombinations that lead to Alarm 72. Note that if X44/10 isactivated in selection 2 or 3, this signal is ignored.However, the MCB 112 is still able to activate safe torqueoff.ALARM 80, Drive initialised to default valueParameter settings are initialised to default settings after amanual reset. Reset the unit to clear the alarm.ALARM 92, No flowA no-flow condition has occurred. 22-23 No-Flow Functionis set for alarm. Troubleshoot the system and reset thefrequency converter after the fault has been cleared.ALARM 93, Dry pumpA no-flow condition in the system with the frequencyconverter operating at high speed may indicate a drypump. 22-26 Dry Pump Function is set for alarm.Troubleshoot the system and reset the frequency converterafter clearing the fault.ALARM 94, End of curveFeedback is lower than the set point. This may indicateleakage in the system. 22-50 End of Curve Function is set foralarm. Troubleshoot the system and reset the frequencyconverter after the fault has been cleared.ALARM 95, Broken beltTorque is below the torque level set for no load, indicatinga broken belt. 22-60 Broken Belt Function is set for alarm.Troubleshoot the system and reset the frequency converterafter the fault has been cleared.ALARM 96, Start delayedMotor start has been delayed due to short-cycleprotection. 22-76 Interval between Starts is enabled.Troubleshoot the system and reset the frequency converterafter the fault has been cleared.WARNING 97, Stop delayedStopping the motor has been delayed due to short cycleprotection. 22-76 Interval between Starts is enabled.Troubleshoot the system and reset the frequency converterafter the fault has been cleared.WARNING 98, Clock faultTime is not set or the RTC clock has failed. Reset the clockin 0-70 Date and Time.WARNING/ALARM 104, Mixing fan faultThe fan monitor checks that the fan is spinning at drivepower-up or whenever the mixing fan is turned on. If thefan is not operating, then the fault is annunciated. Themixing-fan fault can be configured as a warning or analarm trip by parameter 14-53 (Fan Monitor).TroubleshootingCycle power to the frequency converter to determine if thewarning/alarm returns.WARNING 200, Fire modeThis indicates the frequency converter is operating in firemode. The warning clears when fire mode is removed. Seethe fire mode data in the alarm log.WARNING 201, Fire mode was activeThis indicates the frequency converter had entered firemode. Cycle power to the unit to remove the warning. Seethe fire mode data in the alarm log.WARNING 202, Fire mode limits exceededWhile operating in fire mode one or more alarm conditionshave been ignored which would normally trip the unit.Operating in this condition voids unit warranty. Cyclepower to the unit to remove the warning. See the firemode data in the alarm log.WARNING 203, Missing motorWith a frequency converter operating multi-motors, anunder-load condition was detected. This could indicate amissing motor. Inspect the system for proper operation.WARNING 204, Locked rotorWith a frequency converter operating multi-motors, anoverload condition was detected. This could indicate alocked rotor. Inspect the motor for proper operation.WARNING 250, New spare partA component in the frequency converter has beenreplaced. Reset the frequency converter for normaloperation.WARNING 251, New typecodeThe power card or other components have been replacedand the typecode changed. Reset to remove the warningand resume normal operation.General Specifications and ... Design Guide218 Danfoss A/S © Rev. 05/2014 All rights reserved. MG16C20288