TOSHIBA TOSVERT VF-A5 (01) PDF Document

Verify the following items before starting operation for the TOSHIBA TOSVERT VF-A5:

Step 1. Check that the wiring is correct.

Step 2. Check that the power source is the correctly-rated value. (Refer to Chapter 6, Standard connections on page 15.)

Step 3. After confirming that there are no mistakes, perform simple operations with the standard settings.

Step 4. Operate according to the following procedure.

Step 5. When performing trial operations, run the motor at a low frequency (approx. 10Hz).

Starting and stopping via the panel for the TOSHIBA TOSVERT VF-A5:

Caution for TOSHIBA TOSVERT VF-A5:

If the power switch is turned off in the step 4 state, the motor will coast-stop. However, this method should only be used in the case of an emergency.

Avoid frequent starting and stopping of the inverter by turning the power switch on and off, as this will shorten the life of the inverter.

Changing the frequency while running on the TOSHIBA TOSVERT VF-A5:

To change the “standard settings” on the TOSHIBA TOSVERT VF-A5, first, refer to the parameter list to find the parameter group where the function to be changed is, and how the symbol name is displayed.

Blind function on the TOSHIBA TOSVERT VF-A5:

In the standard setting, only groups U, F, and U can be displayed on the panel. The other groups are blinded via the blind function in group U. Unblind the desired group if necessary. (Refer to Gr.Ut bLnd Blind function on page 50.)

For group Gr.U:

Gr.U displays only those parameters for which the setting value has been changed by the user, and the changed setting value differs from the standard default setting. [Auto edit function]

The parameter settings can also be changed in this group.

However, if a parameter setting value that is the same as the default setting is once again input, that parameter will no longer be displayed in this group.

Gr.U sequentially compares the settings of all parameters to the standard default setting values, so this process may take several seconds. The Gr.U display will blink and may not appear to immediately react, but the Gr.U search can be stopped by pressing a key other than △ or ENTER.

(Refer to changed settings memo section on page 142 in which changed setting values may be recorded.)

Panel operation mode selection for the TOSHIBA TOSVERT VF-A5:

Various panel operation modes (PnOd in Gr.Ut) can be selected to prevent undesired operations from the operation panel. If this parameter is set by mistake, the function will become valid after a power on initialization or fault reset is executed, and the anticipated key operations may not be possible. In this case, reset the panel operation mode selection (Gr.Ut PnOd) (Refer to Gr.Ut PnOd panel operation mode selection on page 84.)

The method for making setting changes is explained below using maximum voltage frequency (U.I) as an example.

Another mode can be moved to in any of the above states by pressing the PRG or MON keys. However, if ENTER is not pressed first after changing a parameter setting value, the new value will not be saved, and the original setting will be returned when the power is turned off. Always press the ENTER key after setting a setting.

This function monitors the various status items (frequency setting, output voltage, current, terminal information, etc.). This mode can be entered by pressing the MON key in standard monitor mode. To exit this mode, press the PRG key to move to settings monitor mode, or MON to return to standard monitor mode.

Example of monitor operation in standard monitor mode (Assume that the motor is running.) for the TOSHIBA TOSVERT VF-A5:

If there are past trips, the trip status information for a max. of four trips can be displayed in the same manner. If MON is pressed, the initial display will be returned to.

If the ▽ key is held down during the above steps, the display will change to the next item every 0.5 sec. The trip title display state can be changed to if the MON key is pressed at any time.

* The trip status monitor function will remain active until power is turned OFF or the trip is cleared.

Note 1) When dISr in Gr.F reverse run disable selection is set to 1, the display will always be: Fr-F.

Note 2) Four monitor elements can be selected by the status monitor display selections in Gr.Ut. In addition, the display units for current and voltage elements can be set to A, V (respectively) or %.

Note 3) The input voltage display is calculated by multiplying 1/√2 times the DC voltage obtained by rectifying the input voltage. If the input voltage drops below 100V, the display will be: y—.

Note 4) The display will be: P— when only control power is applied.

Note 5) The cumulative run time is counted only while running. The value shown is in 100-hour units ( 0.0 1 hour to 99900 hours)

When the △ ▽ keys are held down during the above steps, the display will change to the next item every 0.5 sec. The run/stop, frequency display status or settings monitor mode can be entered, and terminal input operation mode can be switched to (only when stopped) at any point in the process. The — symbol in the example indicates that the left and right symbols are alternately displayed every 0.5 sec.

This mode is entered by pressing the PRG key in standard monitor mode.

To exit this mode, press the PRG key to move to standard monitor mode, or the MON key in Gr.Ut to move to status monitor mode.

As described below, this mode both displays parameters and settings, and contains the setting and adjustment functions.

The “Panel Operation Mode Selection” (PnOd in Gr.Ut) must be set to 3 or greater in order to change parameter settings. (The standard default setting allows this.)

The ‘Panel Operation Mode Selection’ parameter can be changed even when set to ‘parameter changes prohibited’.

Parameter setting and display function for the TOSHIBA TOSVERT VF-A5:

Use the following procedure to set the desired parameter value.

Step 1. Press PRG to enter settings monitor mode.

Step 2. At the group title display, press △ ▽ to select the desired group, then press ENTER to display the group’s parameter names.

Step 3. At the parameter name display, press △ ▽ to select the parameter name, then press ENTER to display the data setting.

Step 4. At the data setting display, change the data with the △ ▽ keys.

Step 5. Save the changed data by pressing ENTER.

This function is used to adjust the scale when an analog meter is installed to monitor the output frequency or current. This adjustment is done in the same manner as the parameter setting and display function, except that the meter indicator amplitude changes, instead of the LED display, when the △ ▽ keys are pressed. The value indicated by the meter is adjusted to match the LED display, and is adjusted while running.

If Gr.An is not displayed, set bLnd (blind function) in Gr.Ut. (Refer to page 50.)

Example of FM (Frequency Meter) adjustment for the TOSHIBA TOSVERT VF-A5:

Note) When DC voltage is selected for FNSL or ANSL and the main circuit power is turned OFF (nOFF status), the FM (AM) output will not be 0, but instead will show a slight output.

When a setting value and one of the following alarms are alternately displayed on the TOSHIBA TOSVERT VF-A5:

HI alarm (upper limit alarm) … When the upper limit of the setting range has been reached, or when the setting value exceeds its upper limit as a result of another parameter setting value being changed. (In the latter case, the value will be corrected to its upper limit value.)

LO alarm (lower limit alarm) … When the lower limit of the setting range has been reached, or when the setting value exceeds its lower limit as a result of another parameter setting value being changed. (In the latter case, the value will be corrected to its lower limit value.)

The data settings of parameters that have an adjustment range limited by the setting values of LL and UL, such as the preset speed frequency parameters, cannot exceed the values of LL and UL.

When the FH, UL or LL parameter values are changed, the setting values of some parameters may exceed their limits as a result. In this case, an alarm will be displayed when a parameter with a setting exceeding its adjustment range is selected and adjustment is attempted. To change a parameter with this type of setting value, the moment that the △ ▽ keys are pressed, the alarm will be displayed and the setting value will change to its limiting value.

If UL is exceeded, the value will become the same as UL.

If LL is exceeded, the value will become the same as LL.

Example operation when UL = 60Hz, LL = 40Hz, and Sr.0I = 80Hz is set.

This mode is used to run the inverter at low speeds, and especially allows short-time runs (inching) to be done easily. The following explanation is for executing jog from the panel. When using terminal block signals to execute jog, refer to the parameter explanation section for Gr.SF JOG.

This mode is entered via the following procedure.

The JOG run frequency (JOG in Gr.SF) and JOG stop control (JStP in Gr.SF) parameters must be set from settings monitor mode before entering this mode. (Refer to page 70.)

Note) If positioning is attempted in JOG run mode and the motor does not smoothly stop at the desired location, set the output short-circuit detection in OCLS in Gr.Pr setting value to 2 (position sensing during JOG). (Refer to page 86.)

The following sources can be selected for run/stop commands (CnOd mode).

This function allows the selection of the frequency command source as follows, according to the frequency setting mode selection parameter (FnOd in Gr.Ut).

The priority when set to 4 is as follows:

Step 1. RS232C communication

Step 2. Panel (select with PANEL/REMOTE key)

Step 3. Terminal block (when selected by the user) Note)

Step 4. Communication option board

Step 5. Terminal block (normal)

Note) When 39 (panel/terminal mode selection) is allocated to a terminal with the input terminal selection function.

When the switching signal is not input to the terminal, terminal block mode is selected.

The following three types of contact terminal inputs are always valid regardless of the CnOd and FnOd settings. (See p.55 Gr.St I∞E* (0 to 10 ).)

CnOd and FnOd can be changed while running, but the new settings will not become valid until the motor has stopped once (0.00Hz). (Always stop once after changing CnOd or FnOd .)

Parameters can be set in the standard mode, but by alternatively, the panel operation mode selection (PnOd in Gr.Ut) can be changed as follows.

* If PnOd is set to 3, 1 (reset operations) and 2 (monitor operations) will be valid.

In addition to the normal decelerated stop, the following methods can be used from the panel.

Note on ESEP in Gr.SE settings:

0: Coast-stop

1: Decelerated stop

2: DC injection braking stop

* If DC braking is not required during normal stopping when braking stop is selected, set the DC braking time dbE to 0.

Caution: The emergency stop command forcibly stops the motor with the inverter unit key operation even if the command mode is not set to panel operation mode. This command cannot be prohibited with the command mode selection. When executed, the emergency stop will be regarded as a trip and will be recorded as a past fault.

Remove the trip cause before resetting an inverter that has tripped due to a failure or other fault. The inverter will trip again if the cause is not removed.

Reset the tripped state with one of the following methods:

Step 1. Turn off the power (until the LED display goes out) Note 1)

Step 2. External signal (short circuit between control terminals RES-CC)

Step 3. Panel operation

Note 1) Refer to Gr.Pr ErCL (page 80) for the trip cause.

Resetting with the panel is performed by the following process.

Step 1. Press STOP/RESET and confirm that Ct rL is displayed.

Step 2. Press STOP/RESET again, and if the trip cause has been removed, the inverter will be reset.

* For the following overload trips, the inverter cannot be reset with an external signal or with the panel during the required cooling time.

Caution: To reset immediately due to an emergency, the power can be turned OFF to reset the inverter, but if this method is used frequently, the inverter or motor may be damaged.

The V/f settings related parameters on the TOSHIBA TOSVERT VF-A5 are FH (Maximum frequency), UL I (Maximum voltage frequency), UL (Maximum voltage frequency voltage selection), and LL (Maximum voltage frequency). The V/f settings are among the most important parameters. The motor voltage to frequency ratio is set by them.

V/f settings graph when ULSL set to 0:

Output voltage vs. Output frequency where V fluctuates according to the input voltage.

V/f settings graph when ULSL set to 1, 2:

Output voltage vs. Output frequency where V is automatically set between the following values according to the input voltage when the power is turned on.

200V class: 200 to 230Vac

400V class: 380 to 460Vac

If V is set with UL.I.

* Even if UL.U I is set higher than the input voltage, the output voltage will not be higher than the input voltage.

* Even if UL.U I is set when ULSL is set to 1, it will be ignored.

The V/f pattern parameter is Pt in Gr.F (Fundamental Parameters #1).

Related parameters:

Pt: V/f pattern

Ub.I: Voltage boost

UL.I: Maximum voltage frequency

Gr.nE, nEC, nEr, nErn, nE.IH: Motor related parameters

Constant torque, variable torque, automatic torque boost, and vector control can be selected for the V/f pattern.

V/f pattern settings for the TOSHIBA TOSVERT VF-A5:

Torque characteristics for Pt set to 1 (Constant torque):

Output voltage [%] vs Output frequency [Hz]. Linear increase up to UL I, with voltage boost Ub I at 0Hz.

Torque characteristics for Pt set to 2 (Variable torque characteristics):

Output voltage [%] vs Output frequency [Hz]. Linear increase up to UL I, with voltage boost Ub I at 0Hz, then flattening.

* If the voltage boost value is set too high, the motor will be overexcited, and an OL or OC trip may occur. In some cases, this may also shorten the life of the inverter.

* The voltage boost value is automatically shorten the initially set of the inverter for the max. applicable motor according to the inverter capacity. If a standard motor matching the inverter capacity is used, the value does not necessarily need to be adjusted. Even when readjusting, setting to within ±2% of the initial setting value is recommended.

* When readjusting, setting to within ±2% of the initial setting value is recommended.

* Pt set to 3 Automatic torque boost

* Pt set to 4 Automatic torque boost with energy saving

* Pt set to 5 Vector control

* Pt set to 6 Vector control + energy saving. Motor speed fluctuations are suppressed, even with high torque at low frequencies. The output voltage will always depend on the maximum voltage frequency value during vector control.

* The load current is detected, and the inverter’s output voltage (torque) is automatically adjusted.

* Pt and nEC cannot be changed while running. Even if nEC, nEr, nErn, nE.IF are changed while running, the changes will not become valid until the motor is stopped (0.00Hz).

The acceleration time ACC is the time to reach the max. frequency FH from 0Hz, and the deceleration time DEC is the time to reach 0Hz from the max. frequency FH.

The setting range and resolution can be set by the Acc/Dec time units selection dSPE.

Acceleration/deceleration time settings graph for the TOSHIBA TOSVERT VF-A5:

Output frequency [Hz] vs Time [S] graph showing segments ACC I, ACC2 for acceleration, and DEC I, DEC2 for deceleration, relative to the AD2-CC state.

* The default acceleration/deceleration time settings will depend on the inverter capacity.

* Switching between ACC I/DEC I and ACC2/DEC2 is possible with the operating panel or terminal block. Switching can also take place at a set frequency. (Refer to acceleration/deceleration #1 and #2 selection on page 52.)

Related parameters for Acc/Dec patterns on the TOSHIBA TOSVERT VF-A5 are:

SCU I: Acc/Dec pattern #1

SCU2: Acc/Dec pattern #2

SC H: Acc/Dec pattern adjustment (HIGH)

Automatic switching of the acc/dec times can be easily performed by combining the use of terminal block input (Ad2, acc/dec #1 and #2 selection), and acc/dec #1 and #2 switching frequency (Ad2F).

(Refer to CnOd in Gr.Ut and It∞ in Gr.St (0 to 10) for setting the terminal block outputs.)

Output frequency [Hz] vs Time [S] graph showing acceleration/deceleration time segments for ACC I, ACC2, DEC I, DEC2 relative to the AD2-CC state.

* Refer to the section on command mode selection (CnOd in Gr.Ut) for the selection of the start/stop command.

* If start/stop command source is selected to be the operating panel, the acc/dec will function according to the setting of parameter Ad2 regardless of the state of terminals AD2-CC.

* If the start/stop command source is selected to be the terminal inputs, acceleration/deceleration #1 and #2 switching will be selected by the terminal input AD2-CC state regardless of the setting of parameter Ad2.

Self-adjusting function for SCU I set to 1 (Self-adjusting function):

This function cannot be used when the frequency reference constantly fluctuates or when the load changes suddenly. The REF ACC I parameters will be automatically changed, but when the control power is turned OFF, the settings will return to their original values.

To save the self-adjusting function results, display ACC HEC I in Gr.U, press ENTER, make the data setting blink by pressing the △ or ▽ keys once, and then press ENTER again to write the data.

Set SCU2 for ACC2 and DEC2.

SCU I set to 2 (S-Pattern #1): This pattern is used when accelerating/decelerating to a high speed area (exceeding 60Hz) or when the required acceleration is short. This pattern is suitable for conveyor, etc.

SCU I set to 3 (S-Pattern #2): This pattern gradually accelerates in the field-weakening area. This pattern is suitable for high-speed spindles.

Examples of acceleration/deceleration pattern settings for the TOSHIBA TOSVERT VF-A5:

The curve will depend on the (max. voltage frequency/max. frequency), and the acceleration will incline as the (max. voltage frequency/max. frequency) decreases, and the actual acceleration time will increase. (The rate of acceleration will decrease in the field-weakening area.)

Related parameters for Blind function selection on the TOSHIBA TOSVERT VF-A5:

bLnd: Blind function selection

bLF2 ~ bLnE: Group unblind selections

Displaying of parameter groups other than Gr.F, Ut and U can be selectively configured by these parameters.

* The parameters bLF2 ~ bLnE will be displayed when bLnd is set to 1. Cancel the blind function for the desired parameter group by setting its corresponding parameter value to 0 (bLF2 for GrF2).

Example of how to cancel the blind function for parameter group Gr.An on the TOSHIBA TOSVERT VF-A5:

The upper limit frequency UL sets the upper limit of the output frequency, and the lower limit frequency LL sets the lower limit of the output frequency.

The upper limit frequency can be set between 0 and the max. frequency.

The lower limit frequency can be set between 0 and the upper limit frequency.

Output frequency [Hz] vs Frequency setting signal [%] graph for upper limit frequency:

Output frequency is limited by UL when the frequency setting signal reaches the point corresponding to UL.

Output frequency [Hz] vs Frequency setting signal [%] graph for lower limit frequency:

Output frequency cannot be set below LL.

* A frequency exceeding UL will not be output.

* The operating frequency can only be set within the range of the upper limit frequency and lower limit frequency when set from the panel. An error display (HI < 50.0 alternately displayed) will occur if an attempt is made to set the frequency from the panel above 50Hz when the upper limit frequency is set to 50Hz.

* The frequency cannot be set below LL.

This is used to prevent reverse run problems which may occur if an incorrect start signal is input.

* This applies to both panel and external control.

The parameter for Acc/dec #1 and #2 selection on the TOSHIBA TOSVERT VF-A5 is Ad2 in Gr.Pn (Panel Control Parameters).

Related parameters:

Ad2: Acc/dec #1 and #2 selection

Gr.F2 Ad2F: Acc/dec #1 and #2 switching frequency

Gr.St I∞E∞10: Input terminal selections

Automatic switching of the acc/dec times can be easily performed by combining the use of terminal block input Ad2, acc/dec #1 and #2 selection, and acc/dec #1 and #2 switching frequency (Ad2F).

(Refer to CnOd in Gr.Ut and It∞ in Gr.St (0 to 10) for setting the terminal block outputs.)

Output frequency [Hz] vs Time [S] graph showing acceleration/deceleration profile based on Ad2F switching.

* Refer to the section on command mode selection (CnOd in Gr.Ut) for the selection of the start/stop command.

* If start/stop command source is selected to be the operating panel, the acc/dec will function according to the setting of parameter Ad2 regardless of the state of terminals AD2-CC.

* If the start/stop command source is selected to be the terminal inputs, acceleration/deceleration #1 and #2 switching will be selected by the terminal input AD2-CC state regardless of the setting of parameter Ad2.

This is used when Gr.Fb feedback parameters are used.

* If no feedback control is selected with the Gr.Fb feedback control selection parameter (FbPn [FbPn = 0]) is selected.

Feedback control will not occur even if panel feedback control ON (PFbC = 0) is selected.

* Refer to the section on Gr.Fb for feedback control.

The trip causes that can be reset when the inverter trips as a result of a failure or fault, etc., can be selected.

* The trip cause must be removed before resetting, or the inverter will trip again.

OL indicates OL.In, OL.nE, and OLr. Resetting is not possible during the required cooling time after tripping. The inverter can be reset, however, by turning the control power OFF.

Required cooling time under standard settings:

This parameter is used when two different types of motors are used by one inverter or when the motor V/F characteristics are to be changed while running.

Related parameters:

PEP: Fundamental parameter switching

Gr.St I∞E∞10: Input terminal selections

Switching from the panel (using PEP):

When PEP is set to 1: Acc/dec #1

When PEP is set to 2: Acc/dec #2

Switching from the terminal block (using input terminal I∞E∞ set to 9 (AD2 switching selection)):

The parameters that can be changed are related to Gr.F (Fundamental parameters #1), Gr.F2 (Fundamental parameters #2), Gr.Pr (Protection parameters), Gr.St (Terminal selection parameters).

The input terminal selections on the TOSHIBA TOSVERT VF-A5 are set using the parameter group Gr.St with the title Input terminal selections I∞E∞.

The relationship between the settings of CnOd and FnOd in Gr.Ut and the valid modes is given in the following table.

Note) Both terminal block and panel are valid.

* If ST is not selected, the setting will be viewed as I. (Same as ST-CC:ON state)

* Up/down frequency setting: The rate of change of the frequency command during up/down contact input will follow the ACC2 frequency setting values. Therefore, to change the setting while displaying the output frequency on the LED display, always set ACC I = ACC2 and [DEC I] = [DEC2]. With these settings, the frequency command value and the output frequency can be matched, and the up/down frequency can be adjusted while viewing the LED display.

* Expansion terminal block PCB (optional): The input terminal block normally has 8 contact points, but by adding the expansion terminal block PCB (optional) an additional 3 points can be added, for a total of 11 contact points.

* PUSH-type RUN/STOP: Always use the PUSH-type RUN/STOP (setting value = 37, 38) and the forward/reverse run selection (setting value = 40) as a pair.

Wiring diagram for PUSH-type RUN/STOP for the TOSHIBA TOSVERT VF-A5:

Shows connections for Run and Stop terminals, with terminal set to 37 for Run and 38 for Stop, and terminal set to 40 for reverse run.

The expansion terminal block PCB is required for PG input.

The output terminal selections on the TOSHIBA TOSVERT VF-A5 are set using the parameter group Gr.St with the titles Output terminal selections OE∞ and OE∞3.

The output terminal block normally has three contact points, but by adding the expansion terminal block PCB, an additional four contact points can be added, for a total of seven contact points.

Output terminal selections table for the TOSHIBA TOSVERT VF-A5:

When expanding terminal block PCB (optional) with 3 relay outputs is used, do not connect any other devices to the control terminals R0 and LOW terminals.

The alarm and pre-alarm output signals always output the current inverter status, so that when the inverter returns to its normal level, the output signals will return to the output signals.

Related parameters for Low speed, acceleration/deceleration complete, speed reach output signals on the TOSHIBA TOSVERT VF-A5:

LF: Low-speed signal output frequency

HrCH: Speed reach HI frequency

LrCH: Speed reach LO frequency

OEO ~ OE3: Output terminal selections

A signal is output when the output frequency exceeds the set low-speed detection frequency LF. This can be used as a magnetic brake open/close signal, etc.

Output frequency [Hz] vs Time [S] graph showing how HrCH, LrCH, dF, LF signals relate to the output frequency profile and control signals ST-CC, F-CC, Low speed output signal, and Acceleration/deceleration complete output signal, and Speed reach output signal.

* The speed reach signal is also output when a preset speed is reached.

* The low speed signal will turn OFF when DC injection braking (refer to Gr.Pr dbF) is applied during a decelerated stop.

Note) The speed reach signal output when the frequency is greater than HrCH, and turned off when it is less than LrCH.

Related parameters for Input/output terminal response time selections on the TOSHIBA TOSVERT VF-A5:

IEF: Input terminals (R, S1, S2, S3, S4, S5, S6, S7) response time selection

IESF: Input terminals (F, RES, ST) response time selections

OEOd ~ RCH, LOW, FL, OUT) delay times

OEOh: Output terminals (RCH, LOW, FL, OUT) hold times

If noise affects contact point chattering results in undesirable or incorrect operation, increase the terminal response time selections. As the setting value is increased, the response time will also increase proportionally.

* When set to 1, the response time will be the shortest, and when set to 100, the response time will be the max. (approx. 200ms).

* The output terminals can be set separately for the delay time when turning ON, and the output hold time when turning OFF.

When the acceleration/deceleration time is 0.1 sec. or less and an analog frequency input is used, chattering may occur in the acceleration/deceleration complete or low speed detection signal. Set the output terminal delay times (filter functions) OE Id, OE2d, OE3d as necessary.

These parameters allow the inverter to change from commercial power operation to inverter operation, and to restart without having to stop the motor when restoring power after a momentary outage (in the coast-stop state).

By using the commercial power/INV switching frequency (FCHG), the inverter will accelerate, and then automatically switch the motor to the commercial power source. Energy savings and quieter operation can be realized when the motor is run directly from the commercial power source.

Example of the commercial power/inverter switching wiring shown below for the TOSHIBA TOSVERT VF-A5:

Wiring diagram for commercial power/inverter switching for the TOSHIBA TOSVERT VF-A5, showing connection of MCCB1, MC1, MC2, MC3, S1(10), S2(11), ST, CC, P24, RCH, LOW, INV1, INV2.

* Short circuit between ST and CC when using only the auto-restart function.

* Motor speed search (ArSt in Gr.Pr) on ST make/break (commercial power switching)

Selects the No. of pulses in proportion to the output frequency from the output terminal FP.

Note) When 96f is selected, the pulse output will be an alternating dual-cycle pulse train, so the counting instrument must read an adequate average frequency.

48f and 360f are single pulse trains, so the frequency measurement device can perform high speed reading of the output pulses.

* By using the output pulse terminal (FP) and the pulse outputs of expansion terminal block PCBs (optional) installed on other inverters, multiple inverters can be proportionally controlled and operated.

The output FP signal may be unstable when power is turned ON, during a fault reset, or when GrUt tYP is set.

Parameter data can be externally adjusted using the RR input terminal.

Set to 1 FH adjustment … The frequency reference from the RR input terminal can be used as the FH data.

* Note that FH cannot be changed while running, so the data will be updated only when the inverter is stopped.

Set to 2 TACC/TDEC multiplication factor … The acceleration/deceleration time parameter values will be multiplied from 0.06 times (0%) to 1.0 times (100%) with the RR terminal analog input.

Set to 3 Ub multiplication factor … The voltage boost Ub parameter values can be multiplied from 0.0 times (0%) to 1.00 times (100%) with the RR terminal analog input.

Set to 4 SEL multiplication factor … The current limit adjustment SEL parameter values can be multiplied from 0% to 100% with the RR terminal analog input.

The inverter run/stop can be controlled with just the reference frequency signal. By setting the run frequency Frun and the run frequency hysteresis FHYS, the inverter will start running when the reference frequency signal is higher than point B in the following diagram, and will stop when less than point A.

* For example, when using the inverter for HVAC applications, etc., and automatically operating from a room temperature signal, the inverter can be stopped when the reference frequency signal drops below 30Hz.

Graph showing Output frequency [Hz] vs Reference frequency signal [%] illustrating the hysteresis effect between points A and B for run/stop control based on Frun and FHYS.

* During acceleration, the inverter will start with start-up frequency [F.St] in Gr.SC when the reference frequency signal is higher than point B. During deceleration, the inverter will stop at end frequency F-En in Gr.SC when the reference frequency signal drops below point A.

These settings are used when the starting torque response delays influence the acceleration/deceleration times. Normal settings of these parameters are from 0.5 to 2Hz, and should be kept less than 5Hz. Overcurrent can be avoided by keeping the frequency less than the motor rated slip amount.

Graph showing Output frequency [Hz] vs Reference frequency for Jogging operation on the TOSHIBA TOSVERT VF-A5, illustrating how F-St (Start-up frequency) and F-En (End frequency) define the operation range.

During start-up … The F-St frequency setting is instantaneously output.

During stopping … The output frequency is instantaneously changed to 0Hz when the F-En frequency setting is reached.

* Avoid this setting as chattering will occur.

The PWM carrier frequency can be changed by changing the PWM carrier frequency. If resonance occurs between the motor and the load machine or motor fan cover, change the PWM carrier frequency.

The PWM carrier frequency CF can be set between 3kHz and 17kHz. (18.5kW to 75kW units can be adjusted between 3kHz to 15kHz.)

* At low-speed and very high-speed operation, the carrier frequency will be automatically adjusted to meet motor drive requirements.

* If the carrier frequency is set higher than the default setting value, the overload trip level will automatically be reduced, which may result in more frequent overload trips.

* 15kW and smaller units: If the standard 15kHz setting is changed to 17kHz, the overload trip level will be reduced 4% for 200V units and 6% for 400V units.

* 18.5kW and larger units: If the standard 15kHz setting is changed to 15kHz, the overload trip level will be reduced 7% for 200V units and 11% for 400V units.

Basic setting method for Preset speed operation (1) on the TOSHIBA TOSVERT VF-A5:

Step 1. Select the desired No. of speeds for preset speed operation. Sr.n : 0: disabled 1 ~ 15: Speeds 1 to 15

Step 2. Select the operating mode. Sr.n∞ : 0: Deactivated 1: Activated

Sr.n∞ : +1: Reverse run, +2: Acc/dec #2 selection, +4: V/F #2 selection

* Data setting of parameters indicated as using the “+” mark is as follows: Example) Set (+1) + (+2) = 3 is follow.

Both reverse run and Acc/Dec #2 will be in effect when 3 is selected.

Step 3. Set the operating frequencies for the applicable speeds between the lower limit and upper limit frequencies. Sr.0I ~ Sr.15

Step 4. Allocate the terminals for preset speed operation. (Refer to Gr.St I∞E∞ (0 to 10).)

Preset speed No. table:

(O = terminal-CC open, – = terminal-CC closed)

Example of 7-speed run for Preset speed operation (2) on the TOSHIBA TOSVERT VF-A5:

Graph showing Output frequency [Hz] vs Time [S] illustrating the run profile defined by preset speeds Sr.0I to Sr.06, controlled by ST-CC, F-CC, S1-CC, S2-CC, and S3-CC signals.

The above example assumes that the following settings are allocated to the terminals:

* If a selected preset speed number (selected by SS1~SS4) is larger than the setting value of Sr.n, 0Hz will be output.

Two types of reference frequency signals from the terminal block can be automatically selected.

If a signal is input into the selected #1 frequency priority input, that value will be used as the actual frequency reference. Even if a signal is input into the selected #2 frequency priority input, the #1 input has priority.

However, if the #1 frequency input signal becomes 0, the #2 frequency input will be used as the actual frequency reference.

The standard default settings are FC I: RR and FC2: IV, so to use the RX, PG or BIN inputs, change the FC I and FC2 setting values to 3 ~ 5.

By setting the analog input filter parameter InF, a built-in filter constant can be configured to remove noise in the input terminal voltage and current-source frequency command signals. If stable operation is not possible due to noise, increase the filter time constant. The response will decrease, however, as the setting value is increased.

A jog run can be started and stopped with the jog frequency setting from the panel or terminal block when jog-CC is opened. (Refer to the section on Gr.St I∞E∞ for allocating the input terminals.)

* Short circuit JOG-CC before starting a jog run.

Graph showing Output frequency [Hz] vs Time [S] illustrating the sequence of control signals ST-CC, F-CC, JOG-CC and the resulting output frequency for Jog forward run, Jog reverse run, and Runs at the specified frequency set from panel or terminal block.

A) Jog forward run

B) Jog reverse run

C) Runs at the operating frequency set from the panel or terminal block when JOG-CC is opened.

* Jogging will not occur if JOG-CC is shorted while running.

* When using jog run and preset speed run modes simultaneously, the preset speed run mode will have priority. (For example, if the preset speed run mode is set for reverse run, the motor will jog in reverse.)

Select the jog stop method with JStP.

Set the jog run frequency to a value other than 0 to execute a jog run.

The jog run acceleration time is set to zero, so setting the JOG run frequency to 5Hz or less is recommended. If set higher, overcurrent trips may occur, or the motor may not rotate smoothly.

Note) During a jog operation, the LOW and RCH signals will not be output, and PID control will not be enabled.

The methods for operation and adjustment on the operation panel, validating/invalidating operating commands from the terminal block, selection of the stopping method, and resetting are explained in this section.

Panel operation mode or terminal block operation mode can be selected.

* When terminal block operation mode (REMOTE) is selected, commands from the panel are ignored.

* When panel operation mode (PANEL) is selected, commands from the terminal block are ignored.

The operation mode is changed by the PANEL/REMOTE key, and can be done only when the motor is stopped. (When stopped, OFF or a frequency display of 0.0 will be shown.)

Terminal operation mode is automatically entered after power is turned on, unless the input mode is preset as explained below. The panel control LED will be lit when panel operation is selected.

Run/stop command selection (CnOd in Gr.Ut):

The following sources can be selected for run/stop commands (command mode).

Frequency Command Source Setting Function (FnOd in Gr.Ut):

This function allows the selection of the frequency command source as follows, according to the frequency setting mode selection parameter (FnOd in Gr.Ut ).

Parameter Setting Function (PnOd in Gr.Ut):

Parameters can be set in the standard mode, but by alternatively, the panel operation mode selection (PnOd in Gr.Ut) can be changed as follows.

* If PnOd is set to 3, 1 (reset operations) and 2 (monitor operations) will be valid.

Standard Parameter Value Reset Function (tYP in Gr.Ut):

All parameter values can be changed to standard settings at any time by selecting one of the following settings:

Notice for tYP setting:

Note 1) When tYP = 1 is selected, only the max. frequency [FH], maximum voltage frequency [UL I, UL2, upper limit frequency [UL], commercial power/inverter switching frequency [FCHG], and frequency setting signals [FC I, F-PB], and F-PR will change to 50. Other data will be changed.

Note 2) When tYP = 2 is selected, only the above parameters will change to 60.0.

Note 3) Setting tYP = 5 is not possible while running. Stop the inverter and then change the setting.

Previous setting Current setting for tYP = 3 is 3 0.

∊ tYP is used to clear an ErEP error that may occur when the control PCB is installed in a different inverter unit, and to reset the typeform to that of the new inverter. If the inverter typeform contained in the unit referred to on page 124 matches the value of FnOn in Gr.Ut, and then execute the tYP function.

∊ tYP = 5 will save the current parameter settings. Even if parameters are changed, each parameter can be reset to previously-saved values by executing a tYP = 5. This can be used for retaining individualized user settings.

Gr.Ut APL and tYP cannot be changed while running, so always set them after the motor has stopped.

In addition to the normal decelerated stop (deceleration according to the set deceleration time) the following stopping methods can be used from the panel.

Note on ESEP in Gr.SE settings:

0: Coast-stop

1: Decelerated stop

2: DC injection braking stop

* If DC braking is not required during normal stopping when braking stop is selected, set the DC braking time dbE to 0.

Caution: The emergency stop command forcibly stops the motor with the inverter unit key operation even if the command mode is not set to panel operation mode. This command cannot be prohibited with the command mode selection. When executed, the emergency stop will be regarded as a trip and will be recorded as a past fault.