Vacon 50X User Manual

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Vacon 50X User Manual Manual pdf 94 page image

93 z vacon vacon 50x parametersTel. +358 (0)201 2121 • Fax +358 (0)201 2122057Keypad Control (Activation) of the Vacon 50X Program SequencerWhen activating or controlling the Vacon 50X Program Sequencer from the keypad, pressing the FWD keycommands the drive to cycle through the programmed states of the sequencer one time only (oneshotoperation). One-shot operation will run the sequencer until state 9 is reached, or until any state that isnot changed from the default is reached.Pressing the SHIFT and FWD keys simultaneously causes the programmed sequence to repeat until theStop key is pressed (continuous operation). In continuous mode, the sequencer runs until state 9 or anystate that is not changed from the default is reached; it then jumps back to state 1.Note that the REV key has no function in the sequencer mode.Terminal Control of the Vacon 50X Program SequencerWhen activating or controlling the Vacon 50X Program Sequencer from terminals, continuous and one-shot operation is determined by whether the drive is wired for 2-wire or 3-wire control. If the terminal isset up for 2-wire control, the sequencer operates in continuous mode (R/J terminal inactive). This will runthe sequencer until the Forward command is removed. If the terminal is set up for 3-wire control, the se-quencer runs one cycle when the FWD terminal is activated.Note that the REV terminal has no function in sequencer mode.Vacon 50X Sequencer Dwell FunctionalityThe Vacon 50X sequencer has the capability to dwell, or pause, in a state and disregard any command toadvance to the next state. This can be done in two different ways, and both methods can be used at thesame time.If the sequencer is actively running and the Enter key is pressed from the Operate screen of the Vacon50X keypad, the sequencer will dwell in the current state (it will never advance to the next state). Whilethe sequencer is dwelling, a warning of “Seq Dwell” will flash on the Operate screen. To leave the dwellstate, press the Enter key again from the Operate screen.The sequencer Dwell mode can also be entered by programming a digital input to “Seq Dwell.” The se-quencer will then dwell in the current state, for as long as the digital input is active.Vacon 50X Sequencer Advance FunctionalityThe sequencer has the ability to allow the user to advance to the next state without satisfying the condi-tions programmed to advance. To do this, program a digital input to “Seq Advance.” When a digital inputprogram to this option changes from inactive to active, a running sequencer will advance one state. Thisfeature is useful when debugging a sequence with long time intervals.7.4.3 Sequencer State Configuration OverviewEach state of the program sequencer is defined by five characteristics:• Direction in which the drive will operate• Speed at which the drive will operate• Ramp selection of the drive• Output configuration (relays and digital outputs) of the drive• How the sequencer advances to the next state.These five characteristics are configured by two parameters for each state. These parameters arenamed “Seq Cntl X” and “Seq Count X,” where X represents the state number of the sequencer. The “SeqCntl X” parameter is a binary parameter that sets each of the five characteristics listed above. “SeqCount X” configures the threshold that the sequencer will use in determining when to advance by the