Danfoss VLT AQUA Drive FC 202 Programming Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

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NOTICECompare the minimum switching frequency requirementstated by the motor manufacturer to the minimumswitching frequency of the frequency converter, thedefault value in parameter 14-01 Switching Frequency. Ifthe frequency converter does not meet this requirement,use a sine-wave filter.More information about ATEX ETR thermal monitoring canbe found in Application Note for FC 300 ATEX ETR ThermalMonitoring Function.3.3.18 KlixonThe Klixon type thermal circuit breaker uses a KLIXON®metal dish. At a predetermined overload, the heat causedby the current through the disc causes a trip.Using a digital input and 24 V as supply:Example: The frequency converter trips when the motortemperature is too high.Parameter set-up:• Set parameter 1-90 Motor Thermal Protection to [2]Thermistor Trip.• Set parameter 1-93 Thermistor Source to [6] DigitalInput.PTC / ThermistorOFFON+24V12 13 18 3732 A2719 29 33 B20 GNDR<6.6 k Ω >10.8 k Ω130BA151.11Illustration 3.16 Thermistor Connection1-91 Motor External FanOption: Function:[0] * No No external fan is required, that is the motor isderated at low speed.[1] Yes Applies an external motor fan (external ventilation), sono derating of the motor is required at low speed. Theupper curve in Illustration 3.15 (fout = 1 x fM,N) isfollowed if the motor current is lower than nominalmotor current (see parameter 1-24 Motor Current). Ifthe motor current exceeds nominal current, theoperation time still decreases as if no fan wasinstalled.1-93 Thermistor SourceOption: Function:NOTICEThis parameter cannot be adjustedwhile the motor is running.NOTICESet digital input to [0] PNP - Active at24 V in parameter 5-00 Digital I/O Mode.Select the input to which the thermistor (PTCsensor) should be connected. An analoginput option [1] Analog Input 53 or [2] AnalogInput 54 cannot be selected if the analoginput is already in use as a reference sourceParameter Description Programming GuideMG20OB02 Danfoss A/S © 05/2018 All rights reserved. 613 3