Abnormal Speed Detection; Overvoltage Limit Operation; Undervoltage Trip - Toshiba TOSVERT VF-PS1 Instruction Manual

6.26.12 Abnormal speed detection

: Abnormal speed detection time
: Overspeed detection frequency upper band
: Overspeed detection frequency lower band
• Function
When use at speed control mode with sensor (
motor, even when the motor is at rest, and if the speed remains out of the specified limits for the specified
length of time, it outputs an error signal.
When use at speed control mode without sensor (
speed of the motor.
Title
Abnormal speed detection time
Overspeed detection frequency upper
band
Overspeed detection frequency lower band
Output frequency [Hz]

6.26.13 Overvoltage limit operation

: Overvoltage limit operation level
⇒ For more details, refer to Section 6.15.2.

6.26.14 Undervoltage trip

: Undervoltage detection level
: Undervoltage trip selection
• Function
This parameter is used for selecting the control mode when an undervoltage is detected. (Invalid, while the
inverter stops.)
= : (Disabled) ················ Inverter stops,but does not trip. (FL is not active.)
= : (Enabled) ················ Inverter stops and is tripped because an undervoltage is detected. (FL is active.)
Title
Undervoltage detection level
Undervoltage trip selection
Note: For , 100% corresponds to a voltage of 200V (for 200V class) or 400V (for 400V class)
= ), it always monitors the rotational speed of the
Function
Output frequency
0
Function
F-53
≠ ), it always monitors the estimated rotational
Adjustment range
~ sec.
: Disabled, ~  H z
: Disabled, ~  H z
trip
Time [s]
Adjustment range
~ %, %: (auto mode)
: Disabled, : Enabled
E6581386
Default setting
6
Default setting