Torque boost #1, St terminal delay, Torque boost #2 – Toshiba W7 User Manual

Page 135: Switch-on-the-fly

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W7 ASD Installation and Operation Manual

129

ST Terminal Delay

Program

Terminal Settings

Terminal Delays

Input Terminal

Delays

ST Terminal Delay

This parameter delays the response of the ASD to any change in the ST
terminal input by the programmed value (see waveforms at

FL Off Delay

).

The delay may be increased to provide additional electrical noise immunity or
to prevent the ASD from responding to contact bounce or chatter.

Parameter Type — Numerical

Factory Default — 8.0

Changeable During Run — No

Minimum — 2.0

Maximum — 200.0

Units — mS

Switch-on-the-Fly

Program

Special Control

Switch-on-the-Fly

The ability to switch between the Manual and Auto modes while running.

Settings:

Disabled
Enabled
Maintain Motion
Seamless

Parameter Type — Selection List

Factory Default — Disabled

Changeable During Run — No

Torque Boost #1

Program

Motor Settings

Torque Boost #1

The Motor #1 Torque Boost function is used to increase the low frequency
torque for high-inertia loads by increasing the output voltage at frequencies
below ½ of the #1 Base Frequency setting.

The value programmed as a boost percentage establishes an output voltage vs.
output frequency relationship to be used to start the motor or to provide
smoother operation.

Note: Setting an excessive Torque Boost level may cause nuisance

tripping and mechanical stress to loads.

Parameter Type — Numerical

Factory Default — (ASD-dependent)

Changeable During Run — Yes

Minimum — 0.00

Maximum — 30.0

Units — %

Torque Boost #2

Program

Motor Settings

Torque Boost #2

The Motor #2 Torque Boost function is used to increase the low frequency
torque for high inertia loads by increasing the output voltage at frequencies
below ½ of the #2 Base Frequency setting).

This parameter is used only when the parameters for motor set #2 are
configured and selected. Motor set #2 may be selected by a properly configured
input terminal.

See parameter Motor #1 Torque Boost for more information on this setting.

Parameter Type — Numerical

Factory Default — (ASD-dependent)

Changeable During Run — Yes

Minimum — 0.0

Maximum — 30.0

Units — %

ST Terminal Delay

Torque Boost #2

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