Frequency Inverter DF51... - Moeller.com.tr

Setting parameters04/07 AWB8230-1541GBReduced response time (RDY)The response time is the internal transmission time of a controlsignal from the time it is issued to the application of voltage at theinverter (motor connection). The mean response time of the DF51is about 38 ms (for example for the start signal from digital input 1(FWD) to application of motor voltage. It can vary, however,depending on the signal path and program size.With PNU b151 you can configure the device to reduce theresponse time. The frequency inverter then changes directly toRUN mode (RUN LED lit).jhDangerous voltage!With PNU b151 = 01 the output transistors are activated.Output terminals U-V-W carry dangerous mains voltage,even if the enable signal (FWD/REV) was not yet issued.With PNU b151 = 01, RUN mode is selected and accessto some parameters is disabled.PNU Designation RUN b031= 10Value Function DSb151<strong>Inverter</strong>,reduceinverter’sresponse time(RDY) to acontrol signalj j 00 OFF 0001 ONTransistors activeCaution: Dangerous voltage (U-V-W)Figure 152:Digital input 1 configured as FWD (start/stopclockwise rotating field) and digital input 3 as RDY(ready).To activate the RDY function through one of digital inputs 1 to 5,assign the value 52 (RDY) to the corresponding control signalterminal (PNU C001 to C005).When you activate the digital input configured as RDY, thetransistors in the inverter are activated, filter time constants areminimized and RUN mode is called (RUN LED lit).jRDY3FWD1P24Dangerous voltage!The output transistors are activated and dangerous mainsvoltage is present at output terminals U-V-W, even if theenable signal (here FWD at terminal 1) was not yet issued.Tek StopT12aTFigure 153: Example: Start signal and output frequency (responsetime)a Start signal through optional DE51-NET-CANb Output frequency f 2 (phase L1), e.g. after about 48 ms (withoutRDY)bCh1 10.0 V Ch2 20.0 V H 10.0 msT11.00 %A Ch15.80 VD : 400 mV@ : –1.60 VD : 46.8 ms@ : –400 msCh1 Freq– – – –.HzhIn RUN mode, access to some parameters is blocked.138