Danfoss VLT HVAC Basic Drive FC 100 Series Programming Manual

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Danfoss VLT HVAC Basic Drive FC 100 Series Programming Manual Manual pdf 46 page image

4-54 Warning Reference LowRange: Function:-999999.999 * [ -999999.999 -par. 4-55 ]Enter the lower reference limit.When the actual reference fallsbelow this limit, the displayindicates RefLOW. The signaloutputs can be programmed toproduce a status signal onterminal 27 or 29 ( only) and onrelay output 01 or 02 ( only).4-55 Warning Reference HighRange: Function:4999.000* [Depend onthe value of4-54 WarningReference Low-4999.000]Use this parameter to set a higherlimit for the reference range.When the actual reference exceedsthis limit, the display readsReference High. Warning bit 19 isset in 16-94 Ext. Status Word. OutputRelay can be configured to indicatethis warning. LCP warning light doesnot light when this parameter setlimit is reached.4-56 Warning Feedback LowRange: Function:-4,999.000* [-4,999.000 -Depends on thevalue of 4-57WarningFeedback High]Use this parameter to set a lowerlimit for the feedback range.When the feedback falls belowthis limit, the display readsFeedback Low. Warning bit 6 isset in 16-94 Ext. Status Word.Output Relay can be configuredto indicate this warning. LCPwarning light does not light whenthis parameter set limit is reached.4-57 Warning Feedback HighRange: Function:4,999.000* [Depends onthe value of 4-56WarningFeedback Low-4,999.000]Use this parameter to set a higherlimit for the feedback range.When the feedback exceeds thislimit, the display reads FeedbackHigh. Warning bit 5 is set in 16-94Ext. Status Word. Output Relay canbe configured to indicate thiswarning. LCP warning light doesnot light when this parameter setlimit is reached.4-58 Missing Motor Phase FunctionOption: Function:Select On, to display an alarm in the event of a missingmotor phase. Select Off, for no missing motor phasealarm. However the On setting is stronglyrecommended to avoid motor damage.[0] Off No alarm is displayed if a missing motor phase occurs.[1] On An alarm is displayed if a missing motor phase occurs.NOTE!This parameter cannot be adjusted while the motor isrunning. Missing Motor phase Function is always disabledwith PM.3.5.4 4-6* Speed BypassDefine the speed bypass areas for the ramps. Somesystems call for avoiding certain output frequencies orspeeds due to resonance problems in the system. Threefrequency ranges can be avoided.4-61 Bypass Speed From [Hz]Array [3]Range: Function:0 Hz* [0 - 400 Hz] Some systems call for avoiding certainoutput speeds due to resonance problemsin the system. Enter the lower limits of thespeeds to be avoided.4-63 Bypass Speed To [Hz]Array [3]Range: Function:0 Hz* [0 - 400 Hz] Some systems call for avoiding certainoutput speeds due to resonance problemsin the system. Enter the upper limits of thespeeds to be avoided.Parameters VLT® HVAC Basic Drive Programming Guide3-18 MG18B222 - VLT® is a registered Danfoss trademark33