ZIEHL-ABEGG Fcontrol FKDMxx-C Series Operating Instructions Manual

Contents

9.5.5 LimitLimitAfter allocation of a digital input ( IO Setup) an adjustable limitation of the modulationcan be activated via a digital input (“D1”, “D2”, ..).As long as no allocation has been carried out “IO Setup”. Display: | - - - -|“Limit value” = max. possible modulation (e.g.speed reduction during night operation bytime switch).Setting range: “Limit” = “n-max” up to “n-min”.Factory setting: 100 % max. modulation, i.e. no limit.Setting depending on device tye in: % or rpm.n Motore50 %100 %Regolatore P:Min.Limite 70% Min. 0 % Max. = 100 %50 %0 % 100 %LimiteLimite 70% Min. 35 % Max. = 85 %29.03.2007v_limit.vsdValorenominale Campo di regolazioneRegolatore di velocità:Segnale di impostazioneScostamento di regolazioneLimit (idealized principle diagram)nM Motor speedL LimitS SetpointR PbandD Speed controller: setting signalP P-controller: control deviation9.5.6 Minimum speed cutoffMin. speed cut offDisplay of “Msco.” corresponds to the “minimum speed cutoff function”For operation mode speed controller 1.10 ... 1.11 without function!Msco. (minimum speed cutoff) = OFF (factory set-ting)If no “Min. speed” is adjusted, the motor stops withreaching the desired value.If a “Min. speed” is set (e.g. 20 %), the motor is notcut off. In other words, a minimum speed is alwaysguaranteed (motor does not drop below the “Min.speed” setting).Msco. (minimum speed cutoff) e.g. -2.0 KIt takes place a disconnection from setting “Min.speed”to “0”, if the given difference is reached re-lated to the desired value.At a plus value (+) before reaching the desired valueAt a minus value (-) after falling below the desiredvalue.Example of modes with input for refrigerantnM50 %100 %IMin.Min. 35 % Max. = 100 %20 °CS7 KR27 °C-2.0 K10.05.2007v_min_luft_abschalt.vsd(idealized principle diagram)nM Motor speedS SetpointR PbandI Actual valueOperating Instructions Fcontrol – model series FKDM..-C ProgrammingL-BAL-E057-GB 1304 Index 009 Part.-No. 00163327-GB38/74