Output Phase Loss Detection; Overcurrent Stall Level; Overload Reduction Frequency/Overspeed Frequency; Overtorque Detection Time - Toshiba Q7 Installation And Operation Manual

Output Phase Loss Detection

Output Phase Loss Detection
Program Protection
This parameter Enables/Disables the monitoring of each phase of the 3-phase
output signal (U, V, or W) of the ASD. If either line is missing, inactive, or not
of the specified level, the ASD incurs a trip.

Overcurrent Stall Level

Program Protection
This parameter specifies the output current level at which the output frequency
is reduced in an attempt to prevent a trip. The overcurrent level is entered as a
percentage of the maximum rating of the ASD.
Note: Soft Stall must be enabled to use this feature.
Overload Reduction Frequency
Program Protection
This parameter is used to reduce the start frequency during very low-speed
motor operation. During very low-speed operation the cooling efficiency of the
motor decreases. Lowering the start frequency aides in minimizing the
generated heat.
Overspeed Frequency
Program Protection
This parameter sets the upper level of the Base Frequency range that, once
exceeded, will cause an Overspeed Detected alert.

Overtorque Detection Time

Program Protection
This parameter sets the amount of time that the overtorque condition may
exceed the tripping threshold level set at Overtorque Trip/Alarm Level
(Positive Torque) and Overtorque Trip/Alarm Level (Negative Torque)
before a trip occurs.
Q7 ASD Installation and Operation Manual
Output Phase Los
OC Stall Level
OL Reduct Freq
Overspeed Freq
OT Detec Time
Overtorque Detection Time
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — No
Parameter Type — Numerical
Factory Default — (ASD-dependent)
Changeable During Run — Yes
Minimum — 0.00
Maximum — 200.0
Units — %
Parameter Type — Numerical
Factory Default — 6.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 30.00
Units — Hz
Parameter Type — Numerical
Factory Default — 0.0
Changeable During Run — Yes
Minimum — 0.0
Maximum — 30.0
Units — Hz
Parameter Type — Numerical
Factory Default — 0.50
Changeable During Run — No
Minimum — 0.00
Maximum — 100.0
Units — Seconds
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