Toshiba TOSVERT VF-AS1 - Detection of Output Short Circuit; Overtorque Trip

E6581528
F-58
6
6.33.9 Detection of output short circuit
 : Selection of short circuit detection at starting
• Function
Detects a short-circuit on the output side of the inverter.
Title Function Adjustment range Default setting

Selection of short circuit
detection at starting
: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)

 ················· , , : 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.
Note: If the input voltage is rather high (480V as a guide) or the inverter is used to operate a high-speed motor, set
 to  or . Any other setting may cause the motor to malfunction, because a high-speed motor has a
very low impedance. If the inverter malfunctions for reasons of impedance even though  is set to  or
, then set  to  or .
6.33.10 Overtorque trip
 : Overtorque trip selection
 : Overtorque detection level during power running
 : Overtorque detection level during regenerative braking
 : Overtorque detection time
 : Overtorque detection hysteresis
• Function
Trips the inverter or issues an alarm if the total time for which torque is above the level set with
/ reaches the time set with . Trip information is displayed as “.”
= (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  (during regeneration) passes for a time
longer than the time set with .
Title Function Adjustment range Default setting
 Overtorque trip selection :No trip, :Trip 
 Overtorque detection level during power running ~ % 
 Overtorque detection level during regenerative braking ~ % 
 Overtorque detection time ~ sec. 
 Overtorque detection hysteresis ~ % 
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 .
⇒ Refer to Section 7.2.2.
<Example of operation>
Output terminal function: 28 Overtorque detection
= (No trip)
Ex.) When outputting overtorque detection signals through output terminal OUT1
Title Function Adjustment range
Example of
setting
 Output terminal function selection 1(OUT1) ~ 