ZIEHL-ABEGG Fcontrol FKDMxx-C Series Operating Instructions Manual

Contents

9.8.9 Setting Derating Alarm and TemperaturemonitoringThe device has integrated temperature monitoring to protect the device from damage caused byexcessively high interior temperatures.In case of a temperature increase above the predetermined threshold value the level-control is linearlyreduced until the stated threshold temperatures are reached. To prevent a shut down of the entiresystem (in this operating mode, allowable for the controller), no alarm indication occurs via the relaycontacts until the preset threshold value (due to an excessively high interior temperature) is reachedduring reduced operation!Derating AlarmDerating AlarmThe factory preset for the “Derating Alarm” is 90 %.I.e. the device level-control due to excessive interior temperatures only amounts to 90% of the maximum possible. Therefore a message is issued via the programmedoperational or indicator relay.Setting range: 1...95 %9.8.10 Suppression of speedsSuppression of up to three speed ranges.Under certain circumstances, it is possible to prevent disturbing noises that can arise at certainspeeds due to resonances.Example for suppression of 2 ranges (Idealized principle diagram)ADP50 %50 %R0 %IS100 %I35 % max15 % min09.05.2007v_ausblendung_prz.vsd100 %12A ModulationS SetpointR PbandD Speed controller: setting signalP P-controller: control deviationSetting depending on device type in: %, Hz,rpmSuppression1→ Factory setting no suppression active = “OFF” →Suppression1Range1 min.→ Setting for “Range1 min.”Setting range: “Shutdown Freq.” - “Range 1 max.”→Range1 min.Range1 max.→ Setting for “Range1 max.”Setting range: “Range 1 max.” - “Max. Frequency”→Range1 max.Suppression2→ Identical procedures for Suppression2 and Sup-pression3, as far as desired→ etc.Operating Instructions Fcontrol – model series FKDM..-C ProgrammingL-BAL-E057-GB 1304 Index 009 Part.-No. 00163327-GB62/74