Toshiba TOSVERT-130G2+, Operation Manual

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TOSHIBA
DC INJECTION START FREQUENCY - Specifies the frequency at which DC injection
is applied to a motor during a decelerating stop. Used for precise positioning (inching)
of the motor driven equipment.
DC INJECTION VOLTAGE - Specifies the percent of voltage applied during the
DC injection.
DC INJECTION TIME - Specifies the length of time the DC voltage applied.
SEE SECTION 5.10.
FH
8.7 Operating Functions - Descriptions and Examples (Cont'd)
SECOND FUNCTIONS
START-UP FREQUENCY - Sets the frequency at which the inverter will begin operating.
In the panel control setting mode the frequency display will change as the "up"
and
"down" keys are pressed. However, an actual output does not occur until the start-
up frequency is reached. In the terminal input mode the display will remain at zero until
the start-up frequency is reached. This function, along with the voltage boost function,
enables the user to obtain an optimum voltage boost level. See figures below.
0 100%
F-St
F-St 0
30%
100%
8 - 26
(Start frequency F-St can be set @ 0 to 10Hz)
Start-Up Frequency
Start-Up Frequency with Voltage Boost
Stop
Start
0
Frun + Fhys
Frun
Frun - Fhys
0% 100%
0
FMAX
2ND
2ND
1
V/F
Output Frequency
Voltage
boost
Maximum
frequency
% Frequency
Output voltage
Frequency
Frequency setting signal Output frequency
RUN FREQUENCY - Selects a frequency to initiate inverter run/stop control.
RUN FREQUENCY HYSTERESIS - Used to offset inverter run frequency.
When the frequency reference signal reaches the Frun + Fhys point, the drive will ramp
the motor to that speed. The inverter will continue to follow the reference signal until it
falls below the Frun - Fhys at which time the drive will ramp the motor to a stop. See
figure below.
Reference Signal
Hz