Danfoss VLT FCM Series Manual

Also see for VLT FCM 305: Quick setup

Contents

VLT ® FCM SeriesReset zeroes the FC motor after an alarm;however, not all alarms can be reset withoutdisconnecting from mains.Coasting stop, inverse is used for making the FC motorrun freely to stop. Logic ’0’ leads to coasting stop.Reset and coasting stop, inverse, is used for activatingcoasting stop at the same time as reset.Logic ‘0’ leads to coasting stop and reset.Quick stop, inverse is used for stopping themotor in accordance with the quick-stop ramp(set in parameter 212).Logic ’0’ leads to a quick-stop.DC breaking, inverse is used for stopping themotor by energizing it with a DC voltage for agiven time, see parameters 126-132.Please note that this function is only active if thesettings of parameters 126-132 is different from0. Logic ’0’ leads to DC braking.Stop inverse is activated by interrupting the voltageto the terminal. This means that if the terminalhas no voltage, the motor cannot run. The stopwill be effected in accordance with the selectedramp (parameters 207/208).None of the above-mentioned stopcommands are to be used asdisconnection switch in connectionwith repairs. Cut mains instead.Start, is selected if a start/stop command is desired.Logic ’1’ = start, logic ’0’ = stop (stand-by).Latched start - if a pulse is applied for min. 20 ms,the motor will start, provided no stop command. Themotor stops if Stop inverse is activated briefly.Reversing is used for changing the direction ofrotation of the motor shaft. Logic "0" will not leadto reversing. Logic "1" will lead to reversing. Thereversing signal only changes the direction of rotation;it does not activate the start function.Should not be used with Process, closed loop mode.Start reversing, is used for start/stop and for reversingwith the same signal. No start signal is allowed at thesame time. Acts as latch start reversing, provided latchstart has been chosen for another terminal.Should not be used with Process, closed loop mode.Start clockwise is used if the motor shaft is only tobe able to rotate clockwise when starting.Should not be used with Process, closed loop mode.Start counter-clockwise, on is used if the motor shaft isto be able to rotate counter-clockwise when started.Should not be used with Process, closed loop mode.Jog is used for overriding the output frequency to thejog frequency set in parameter 213. The ramp timecan be set in parameter 211. Jog is not active if astop command has been given (start-disable).Jog overrides stand-by.Freeze reference - freezes the actual reference. Thefrozen reference is now the point of enable/ conditionfor Speed up and Speed down to be used.If speed up/down is used, the speed changealways follows the normal ramp (parameters207/208) in the range 0 - Ref MAX .Freeze output - freezes the actual motor frequency(Hz). The frozen motor frequency is now thepoint of enable/condition for Speed up andSpeed down to be used.Freeze output overrides start/stand-by, slipcompensation and closed loop process control.If speed up/down is used, the speed changealways follows the normal ramp (parameters207/208) in the range 0 - f M,N .Speed up and Speed down are selected if digitalcontrol of the up/down speed is desired (motorpotentiometer). This function is only active if Freezereference or Freeze output has been selected.As long as there is a logic ‘1‘ on the terminalselected for speed up, the reference or theoutput frequency will increase.As long as there is a logic ‘1‘ on the terminalselected for speed down, the reference or theoutput frequency will be reduced.Pulses (logic ‘1‘ minimum high for 20 ms and aminimum pause of 20 ms) will lead to a change ofspeed of 0.1% (reference) or 0.1 Hz (output frequency).✭ = factory setting. () = display text [] = value for use in communication via serial communication portMG.03.H3.02 - VLT is a registered Danfoss trademark54