Danfoss VLT MCD 600 Operating Manual

Also see for VLT MCD 600: Installation guide Installation guide Installation guide Operating guide

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Danfoss VLT MCD 600 Operating Manual Manual pdf 56 page image

N O T I C EREDUCED EQUIPMENT LIFETIMEContinued use of emergency mode is not recommended. Emergency mode may compromise the soft starter and/or motor lifeas all protections and trips are disabled. Using the soft starter in emergency mode voids the product warranty.- Do not run the soft starter in emergency mode continuously.9.6 Auxiliary TripAn external trip circuit (such as a low-pressure alarm switch for a pumping system) can be used to trip the soft starter and stop themotor. The external circuit is connected to a programmable input (input A DI-A, COM+ or input B DI-B, COM+). To control the behaviorof the trip, set the following parameters:• Parameter 7-1 Input A Function: Select Input Trip (N/O).• Parameter 7-2 Input A Trip: Set as required. For example, Run Only limits the input trip to when the soft starter is running only.• Parameter 7-3 Input A Trip Delay: Sets a delay between the input activating and the soft starter tripping.• Parameter 7-4 Input A Initial Delay: Sets a delay before the soft starter monitors the state of the input after the start signal. Forexample, a delay may be required to allow time for pipeline pressure to build up.• Parameter 7-10 Input A Name: Select a name, for example Input A Trip (optional).9.7 Typical Control MethodsThe requirements for an application differ between each installation, but the methods listed below are often a good starting point forcommon applications.Table 18: Typical Control MethodsApplication Start mode Startramptime [s]Initial cur-rent(%FLC)Currentlimit(%FLC)Stop mode Stop time[s]Bow thruster Constant current 5 100 400 Coast to stop n/aCentrifuge (separator) Constant current 1 200 450 Coast to stop n/aChipper Constant current 1 200 450 Coast to stop n/aCompressor - reciprocat-ing - loadedConstant current 1 200 450 Coast to stop n/aCompressor - reciprocat-ing - unloadedConstant current 1 200 400 Coast to stop n/aCompressor - screw - loa-dedConstant current 1 200 400 Coast to stop n/aCompressor - screw -. un-loadedConstant current 1 200 350 Coast to stop n/aConveyor - horizontal Constant current 5 200 400 TVR soft stop 10Conveyor - inclined Constant current 2 200 450 Coast to stop n/aConveyor - vertical (buck-et)Constant current 2 200 450 Coast to stop n/aOperationOperating Guide | VLT® Soft Starter MCD 600AQ262141844215en-000202 / 175R117456 | Danfoss A/S © 2018.10