Toshiba W7 - Manual (Page 100)

94 W7 ASD Installation and Operation Manual
Overtorque Trip/Alarm Level (negative torque)
Program ⇒ Protection Settings ⇒ Overtorque Trip/Alarm Level
(negative torque)
This parameter sets the torque threshold level that is used as a setpoint for
overtorque tripping during regeneration. This setting is a percentage of the
maximum rated torque of the ASD.
Parameter Type — Numerical
Factory Default — 150.0
Changeable During Run — No
Minimum — 0.00
Maximum — 250.0
Units — %
Overtorque Trip/Alarm Level (positive torque)
Program
⇒
Protection Settings
⇒
Overtorque Trip/Alarm Level
(positive torque)
This parameter sets the torque threshold level that is used as a setpoint for
overtorque tripping. This setting is a percentage of the maximum rated torque
of the ASD.
Parameter Type — Numerical
Factory Default — 150.0
Changeable During Run — No
Minimum — 0.00
Maximum — 250.0
Units — %
Overvoltage Stall
Program ⇒ Protection Settings ⇒ Overvolt Stall
This parameter Enables/Disables the Overvoltage Stall function.
When enabled, this function causes the ASD to extend the decel time when the
DC bus voltage increases due to transient voltage spikes, regeneration, supply
voltage out of specification, etc. in an attempt to reduce the bus voltage.
Settings:
Enabled
Disabled
Enabled (Forced Shorted Deceleration)
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — Yes
Overvoltage Stall Level
Program ⇒ Protection Settings ⇒ Overvoltage Stall Level
This parameter sets the upper DC bus voltage threshold that, once exceeded,
will cause an Overvoltage Stall. An Overvoltage Stall increases the output
frequency of the ASD during deceleration for a specified time in an attempt to
prevent an Overvoltage Trip.
If the overvoltage condition persists for over 4 mS, an Overvoltage Trip will
be incurred.
Note: This feature may increase deceleration times.
Parameter Type — Numerical
Factory Default — (ASD-dependent)
Changeable During Run — Yes
Minimum — 50.0
Maximum — 250.0
Units — %
Overtorque Trip/Alarm Level (negative torque) Overvoltage Stall Level