ACH580 E-Clipse bypass and packaged drive user manual 37
E-Clipse bypass functions overview
Advanced Override Mode (Override 2)
In the Advanced Override (Override 2) mode, the motor is powered either by the
drive through the drive or by AC line power through the bypass contactor.
Depending on the E-Clipse bypass parameter 1708 setting, the user can switch to
the Advanced Override mode by closing the Advanced Override input contact (DI5 -
if programmed) or as a command through communications.
When Advanced Override is active, the system does not respond to the inputs on the
Drive and E-Clipse Bypass control panel keys.
The Motor Run LED flashes green on the drive and bypass keypads when the
system is in override.
While in Advanced Override, the system responds to bypass overloads and
programmed faults. The system can be custom programmed to acknowledge or
disregard certain faults, safeties and enables. The unit default is programmed to
ignore all external safeties and run enables. See Group 17 for programmability of the
digital input and fault functions.
Normally when the Advanced Override is deactivated, the system returns to the
previous operating mode and can be controlled using the Drive and Bypass
keypads. If the system was previously in Hand mode, the system reverts to Off
mode. The exception to this is when the Smoke Control (Override 1) input contact is
closed, in which case the system remains in Smoke Control mode.
The tables on pages 38-40 provide information on how to set up the E-Clipse bypass
and the ACH580 drive for Override 2 mode. The table on page 38 describes the key
Override 2 parameters in the E-Clipse bypass. The table on page 39 describes the
key Override parameters that would be programmed in the ACH580 drive.
The table on page 40 describes how to configure Override in the ACH580 drive
using Primary Settings, instead of using parameters. In most Override 2 applications
the Primary Settings (page 40) will be used to program Override 2 applications.
Note that programming ACH580 drive Override parameters / Primary Settings is not
necessary if E-Clipse bypass parameter 1708 is set to [1] Bypass or [4] Stop. The
tables on pages 39 and 40 assume the ACH580 drive is in Scalar mode.
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