Detection Of Output Short Circuit; Overtorque Trip - Toshiba TOSVERT VF-PS1 Instruction Manual

6.26.9 Detection of output short circuit

• Function
Detects a short-circuit on the output side of the inverter.
Title
·················
Note: If the input voltage is rather high (480V as a guide) or the inverter is used to operate a high-speed motor, set
very low impedance. If the inverter malfunctions for reasons of impedance even though
, then set

6.26.10 Overtorque trip

6
• Function
Trips the inverter or issues an alarm if the total time for which torque is above the level set with
=
=
Title
Note: Using the output terminal function selection parameter, the inverter can be set so that it outputs overtorque
detection signals regardless of the setting of
<Example of operation>
Output terminal function: 28 Overtorque detection
Ex.) When outputting overtorque detection signals through output terminal OUT1
Title
: Selection of short circuit detection at starting
Function
Selection of short circuit
detection at starting
, , : Standard —— detecting at starting
, , : A check is made once at the first start of operation after the power is turned on or the
inverter is reset.
to or . Any other setting may cause the motor to malfunction, because a high-speed motor has a
to or .
: Overtorque trip selection
: Overtorque detection level during power running
: Overtorque detection level during regenerative braking
: Overtorque detection time
: Overtorque detection hysteresis
/ reaches the time set with
(No trip) ·············· No tripping (FL is not active).
(Tripping) ············ The inverter will trip (the failure signal FL will be activated) if a torque larger than
(during power running) or
longer than the time set with
Function
Overtorque trip selection
Overtorque detection level during power running
Overtorque detection level during regenerative braking
Overtorque detection time
Overtorque detection hysteresis
= (No trip)
Function
Output terminal function selection 1(OUT1)
Adjustment range
:Each time (standard pulse)
:Only one time after power is turned on
:Each time (short pulse)
:Only one time after power is turn on (short pulse)
:Each time (Extremely shot-time pulse)
:Only one time after power is turn on (Extremely
shot-time pulse)
. Trip information is displayed as "
.
. ⇒ Refer to Section 7.2.2.
F-50
E6581531
Default setting
is set to
."
(during regeneration) passes for a time
Adjustment range Default setting
:No trip
:Trip
~ %
~ %
~ sec.
~ %
Example of
Adjustment range
setting
~
or