Eaton M-Max Series Operating Instructions Manual

Also see for MMX11 Series: Installation instructions User manual

Contents

Operation 04/10 MN04020001Z-EN58The start release is done by actuating one of the digital inputs with+24 V:• Terminal 8: FWD = Clockwise rotating field (Forward Run)• Terminal 9: REV = Counterclockwise rotating field (ReverseRun)The control commands are interlocked (exclusive OR) and requirea rising voltage edge.The start release (FWD, REV) is shown in the top status line (LCDdisplay) by the arrow (D) switching from STOP to RUN.The frequency is shown with a minus sign with a start release witha left rotating field (REV).You can now set the output frequency (0 – 50 Hz) and thereforethe speed of the connected ac motor (0 – n motor) with the setpointvalue potentiometer via terminal 2 (proportional voltage signal0 – +10 V). The change in output frequency here is delayed basedon the specified acceleration and deceleration ramps. In thefactory settings, these times are set to 3 seconds.The acceleration and deceleration ramps specify the time changefor the output frequency: from zero to f max (FS = 50 Hz) or fromf max back to zero.figure 59 on page 59 shows a good example of the process, if therelease signal (FWD/REV) is switched on and the maximumsetpoint voltage (+10 V) is applied. The speed of the motor followsthe output frequency depending on the load and moment ofinertia (slip), from zero to n max .If the release signal (FWD, REV) is switched off during operation,the inverter is blocked immediately (STOP). The motor comes to anuncontrolled stop (see a in figure 59, page 59).A controlled run-down can be set using parameter P6.8 (STOPfunction) (P6.8 = 1).The relevant deceleration time is set in parameter P6.6. Theacceleration time is set in parameter P6.5.Information on settings and the description of the parameters usedhere is provided in Section “Drives control (P6)”, page 88.p Display in automatic alternation PFigure 57: Operational data indicator (operational)RUN STOP ALARM FAULTREADYREFFWD REV I/O KEYPAD BUSMONPARFLTRUN STOP ALARM FAULTREADYREFFWD REV I/O KEYPAD BUSMONPARFLTBy actuating the OK button, you can set the displaymode to stay on the value for the output frequency(0.00 Hz).Figure 58: Operation (RUN) via control signal terminal (I/O) with leftrotating field (REV) (e.g. -12.34 Hz)OKRUN STOP ALARM FAULTREADYREFFWD REV I/O KEYPAD BUSMONPARFLTThe stop command can also be given via the STOPbutton on the operating unit. The STOP button isactive in all operating modes. It can be disabled withparameter (P6.16 = 0).