Drive Alarm; Bypass Hand; Bypass Off; Communications Control - ABB ACH550 series User Manual

E-Clipse Bypass Configurations for ACH550 Drives
Drive Alarm (11) [DRIVE ALARM]
If configured for Drive Alarm, the relay is energized when a drive alarm is present.
The specific nature of the alarm is indicated on the drive control panel display. The
Drive Alarm relay is de-energized during normal operation.
Override (12) [OVERRIDE]
If configured for Override, the relay is energized when Smoke Control Override or
Bypass Override mode is selected and de-energized in all other modes. The
Override relay is de-energized during normal operation.
Bypass Hand (13) [BYPASS HAND]
If configured for Bypass Hand, the relay is energized when the motor is running in
Bypass Mode and Hand (manual operation) is selected. The Bypass Hand relay is
de-energized when Bypass Auto or Bypass Off are selected.
Bypass Off (14) [BYPASS OFF]
If configured for Bypass Off, the relay is energized when the bypass control mode
Off is selected. The Bypass Off relay is de-energized when either Bypass Auto or
Bypass Hand are selected.
Bypass Auto (15) [BYPASS AUTO]
If configured for Bypass Auto, the relay is energized when the bypass control mode
Auto is selected. The Bypass Auto relay is de-energized when either Bypass Off or
Bypass Hand are selected.
Communications Control (16) [COMM CTRL]
If configured for Communications Control, the relay is energized when the
appropriate ON command is provided over the serial communications connection.
The relay is de-energized when the appropriate OFF command is provided over the
serial communications connection.
System Alarm (17) [SYS ALARM]
If configured for System Alarm, the relay is energized when a drive/bypass alarm is
present. The specific nature of the alarm is indicated on either the drive control panel
display or the bypass control panel display, depending upon the origination of the
alarm. The System Alarm relay is de-energized during normal operation.
Bypass Fault/Alarm (18) [BYP FLT/ALM]
If configured for Bypass Fault/Alarm, the relay is energized when either a bypass
fault has occurred, the bypass motor overload/underload protection has tripped or
when a bypass alarm condition is present. The Bypass Fault/Alarm relay is de-
energized during normal operation.
Bypass Overload (19) [BYP OVERLD]
If configured for Bypass Overload, the relay is energized when the bypass motor
overload level has exceeded the programmed protection setting. The Bypass
Overload relay is de-energized during normal operation.
Overview of Bypass Functionality
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