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140 W7 ASD Installation and Operation Manual
VI/II Prty (VI/II Terminal Priority) — Activating this terminal assigns command control to the VI/II Terminal and
overrides all other Control Terminal Strip input so long as the Command Mode is set to Use Control Terminal Strip.
Term Prty (Terminal Strip Priority) — Activating this terminal overrides the Frequency Mode setting and assigns speed
control to the Control Terminal Strip.
Editing Enabled (LED) — The LED Keypad system is unavailable at the time of this release.
Torque/Position (Control Switch) — This function allows for a system change from speed-control to torque- or position-
control as a function of the V/f setting when activated.
Deviation Counter Clear — Activating this terminal clears the Deviation Counter when operating in the Position Control
mode.
Forward Limit (Position Control) — Activating this terminal will immediately stop the ASD and hold its position. If the
connection remains for an extended period the ASD will time out and trip. This function is normally used for over-travel
conditions.
Reverse Limit (Position Control) — Activating this terminal will immediately stop the ASD and hold its position. If the
connection remains for an extended period the ASD will time out and trip. This function is normally used for over-travel
conditions.
Light-Load High-Speed Enable — Activating this terminal sets the lower limit of an output frequency range in which the
Light-load/High-speed function may be used.
Snap Stop Control Enable — TBD.
Pre-excite (Motor) — Activating this terminal applies an excitation current to the motor (holds shaft stationary) for the
duration of the activation.
Brake Command — TBD.
Brake Release — Activating this terminal initiates the brake release command. This setting requires that another discrete
input terminal be set to System Consistent Sequence (BA: braking answer) to complete the brake release command and to
convey the status of the braking system to the user or to a dependent subsystem.
Once the braking release function is initiated, the Brake Fault Time begins to count down. Should the count-down timer
expire before the brake releases or before the Braking Answer is returned, fault E-11will occur. Otherwise, the brake releases
the motor and normal motor operations resume.
The Braking Release function is primarily used at startup; but, may be used when the brake is applied while the motor is
running.
Brake Answer — This setting is required when the Braking Release function is used. The function of this input terminal is
to receive the returned the status of the braking system. The returned status is either Released or Not Released.
If Released is returned within the time setting of the Brake Fault Time parameter, normal system function resumes.
If Not Released is returned or if the Brake Fault Time parameter setting times out before either signal is returned, then fault
E-11 occurs.
The returned signal may also be used to notify the user or to control a dependent subsystem.
Brake Test — TBD.
Fire Speed — When activated Preset Speed #1 is output from the ASD.
MUV Disable — When activated the Main Undervoltage Detect function is disabled.
Table 6. (Cont.) Discrete Input Terminal Assignment Selections and Descriptions.