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P.054 level sense start enable – Rockwell Automation GV3000/SE 230VAC 30-100HP GP & Vector Drive V6.04 Start-Up and Reference Manual User Manual

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Programming Reference

P.054 Level Sense Start Enable

This parameter
selects whether the
start input is edge-
sensitive or level-
sensitive for remote
(P.000 = rE) and
option port (P.000 =
OP) control sources.

Parameter Range:

OFF = Start input is edge-sensitive

ON = Start input is level-sensitive

Default Setting:

OFF

Parameter Type:

Configurable

Refer also to parameters: P.000 Control Source

ATTENTION: Be aware of the following before enabling this function:

Setting this parameter to ON immediately applies output power to
the motor when all start conditions are met.

If the drive is running from the terminal strip, both start and stop
inputs are closed. If P.054 = ON and a fault occurs, the drive
coasts to rest and generates a fault. In this case, resetting and
clearing the fault immediately restarts the drive without any
change to the start or stop input states.

If P.026 (Function Loss Response) = 1, the control source is the
terminal strip (start and stop inputs are closed), and P.054 = ON,
the drive coasts to rest if the function loss input is opened and
does not generate a fault. In this case, closing the function loss
input immediately starts the drive without any change to the start
or stop input.

When this function is enabled, the user must ensure that automatic
start up of the driven equipment will not cause injury to operating
personnel or damage to the driven equipment. In addition, the user is
responsible for providing suitable audible or visual alarms or other
devices to indicate that this function is enabled and the drive may start
at any moment. Failure to observe this precaution could result in
severe bodily injury or loss of life.

This parameter applies to remote (P.000 = rE) and option port (P.000 = OP) control
sources only. Local keypad (P.000 = LOCL) and serial port (P.000 = SErL) control
sources always require an off-to-on edge on the start input to start the drive.

Regardless of the status of P.054, the following conditions must be met in order for
the drive to start.

The terminal strip function loss input must be closed.

No fault can be active.

The DC bus must be valid.

No active stop input can be asserted.

When P.054 is set to OFF, and the above requirements are met, the drive requires
an off-to-on edge at the start input in order to start.

When P.054 is set to ON, and the above requirements are met, the drive applies
output power to the motor when the start input is closed.

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