Abnormal Speed Detection; Overvoltage Limit Operation; Undervoltage Trip - Toshiba 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
These parameters allow you to set the inverter so that, when it is in sensor speed control mode (=), it
always monitors the rotational speed of the 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.
Title



Output frequency [Hz]
6

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 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

Function
Abnormal speed detection time
Overspeed detection frequency upper band
Overspeed detection frequency lower band
0

Function
Undervoltage trip selection
Adjustment range
~ sec.
: Disabled, ~  H z
: Disabled, ~  H z
Output frequency
 trip

Adjustment range
: Disabled, : Enabled
F-52
E6581386
Default setting





Time [s]
Default setting
