Danfoss VLT HVAC Basic Drive Programming Manual

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Danfoss VLT HVAC Basic Drive Programming Manual Manual pdf 54 page image

13-11 Comparator OperatorArray [6]Option: Function:mately equal to the fixed value in13-12 Comparator Value.[2] Greater Than (>) Select > [2] for the inverse logic of option< [0].13-12 Comparator ValueArray [6]Range: Function:0.0 * [-9999.0 -9999.0 ]Enter the ‘trigger level’ for the variablethat is monitored by this comparator. Thisis an array parameter containingcomparator values 0 to 5.3.9.4 13-2*TimersUse the result (TRUE or FALSE) from timers directly to definean event (see 13-51 SL Controller Event), or as boolean input ina logic rule (see 13-40 Logic Rule Boolean 1, 13-42 Logic RuleBoolean 2 or 13-44 Logic Rule Boolean 3). A timer is only FALSEwhen started by an action (i.e. Start timer 1 [29]) until thetimer value entered in this parameter is elapsed. Then itbecomes TRUE again.All parameters in this parameter group are array parameterswith index 0 to 2. Select index 0 to program Timer 0, selectindex 1 to program Timer 1, and so on.13-20 SL Controller TimerArray [8]Range: Function:0.0 s* [0.0 -3600.0 s]Enter the value to define the duration of theFALSE output from the programmed timer. Atimer is only FALSE if it is started by an action(see par. 13-52 [29-31] and 13-52 [70-74] Starttimer X) and until the timer value has elapsed.Array par. containing timers 0 to 7.3.9.5 13-4* Logic RulesCombine up to three boolean inputs (TRUE / FALSE inputs)from timers, comparators, digital inputs, status bits andevents using the logical operators AND, OR, and NOT. Selectboolean inputs for the calculation in 13-40 Logic Rule Boolean1, 13-42 Logic Rule Boolean 2 and 13-44 Logic Rule Boolean 3.Define the operators used to logically combine the selectedinputs in 13-41 Logic Rule Operator 1 and 13-43 Logic RuleOperator 2.. . .. . . . . .. . .Par. 13-43Logic Rule Operator 2Par. 13-41Logic Rule Operator 1Par. 13-40Logic Rule Boolean 1Par. 13-42Logic Rule Boolean 2Par. 13-44Logic Rule Boolean 3130BB673.10Priority of calculationThe results of 13-40 Logic Rule Boolean 1, 13-41 Logic RuleOperator 1 and 13-42 Logic Rule Boolean 2 are calculated first.The outcome (TRUE / FALSE) of this calculation is combinedwith the settings of 13-43 Logic Rule Operator 2 and13-44 Logic Rule Boolean 3, yielding the final result (TRUE /FALSE) of the logic rule.13-40 Logic Rule Boolean 1Array [6]Option: Function:[0] * False Enters the fixed value of FALSE in thelogic rule.[1] True Enters the fixed value TRUE in the logicrule.[2] Running See 13-01 Start Event for furtherdescription.[3] In range See 13-01 Start Event for furtherdescription.[4] On reference See 13-01 Start Event for furtherdescription.[7] Out of currentrangeSee 13-01 Start Event for furtherdescription.[8] Below I low See 13-01 Start Event for furtherdescription.[9] Above I high See 13-01 Start Event for furtherdescription.[16] Thermal warning See 13-01 Start Event for furtherdescription.[17] Mains out of range See 13-01 Start Event for furtherdescription.[18] Reversing See 13-01 Start Event for furtherdescription.[19] Warning See 13-01 Start Event for furtherdescription.[20] Alarm (trip) See 13-01 Start Event for furtherdescription.[21] Alarm (trip lock) See 13-01 Start Event for furtherdescription.[22] Comparator 0 Use the result of comparator 0 in thelogic rule.Parameters VLT HVAC Basic Drive Programming GuideMG.18.B1.02 - VLT® is a registered Danfoss trademark 533 3