E6581386
F-51
6
Time [sec]
H
+
H
H
Output current [%]
Low current
signal output
H
ON
OFF
OFF
less than
H
When H= (tripping), the inverter will trip if low current lasts for the period of time set with H.
After tripping, the low current signal remains ON.
6.26.8 Detection of output short circuit
H : 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
H
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)
H ················· , , : 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
H 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 H is set to or ,
then set H to or .
6.26.9 Overtorque trip
H : Overtorque trip selection
H : Overtorque detection level during power running
H : Overtorque detection level during regenerative braking
H : Overtorque detection time
H : Overtorque detection hysteresis
H= (No trip) ··············· No tripping (FL is not active).
H= (Tripping) ············ The inverter will trip (the failure signal FL will be activated) if a torque larger than
H (during power running) or H (during regeneration) passes for a time
longer than the time set with H.
Title Function Adjustment range Default setting
H Overtorque trip selection
:No trip
:Trip
H Overtorque detection level during power running ~ %
H Overtorque detection level during regenerative braking ~ %
H Overtorque detection time ~ sec.
H 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 H.
⇒ Refer to Section 7.2.2.
Function
Trips the inverter or issues an alarm if the total time for which torque is above the level set with
H/H reaches the time set with H Trip information is displayed as “QV"
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