Toshiba H7 - Page 163

156 H7 ASD Operation Manual
OL Reduction Starting Frequency
Program ⇒ Protection Parameters ⇒ Overload
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.
Direct Access Number — F606
Parameter Type — Numerical
Factory Default — 6.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 30.00
Units — Hz
Motor 150% OL Time Limit
Program ⇒ Protection Parameters ⇒ Overload
This parameter establishes a time that the motor may operate at 150% of its
rated current before tripping. This setting applies the time/150% reference to
the individual settings of each motor (e.g., this setting references 150% of the
F600 setting for the #1 motor).
The unit will trip sooner than the time entered here if the overload is greater
than 150%.
Direct Access Number — F607
Parameter Type — Numerical
Factory Default — 600
Changeable During Run — Yes
Minimum — 10
Maximum — 2400
Units — Seconds
Inrush Current Suppression
Program ⇒ Protection Parameters ⇒ Soft Start
The startup inrush current may be suppressed for up to 2.5 seconds. This
parameter determines the length of the inrush current suppression.
Direct Access Number — F608
Parameter Type — Numerical
Factory Default — 0.30
Changeable During Run — No
Minimum — 0.30
Maximum — 2.50
Units — Seconds
Interlock with ST
Program ⇒ Protection Parameters ⇒ Soft Start
This parameter Enables/Disables the ST-to-CC connection dependency on the
successful completion of a Soft Start. If enabled, the ST-to-CC connection will
happen only after a successful Soft Start.
Direct Access Number — F609
Parameter Type — Check Box
Factory Default — Disabled
Changeable During Run — No
Low Current Trip
Program ⇒ Protection Parameters ⇒ Low Current Settings
This parameter Enables/Disables the low-current trip feature.
When enabled, the drive will trip on a low-current fault if the output current of
the drive falls below the level defined at F611 and remains there for the time set
at F612.
Direct Access Number — F610
Parameter Type — Check Box
Factory Default — Disabled
Changeable During Run — No
F606 F610
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