Start-Up; Bypass Control Panel Features - ABB ACH550 User Manual

24

Start-up

Bypass Control Panel Features

Note! For normal operation with the E-Bypass, place the ACH550 control panel in
the Auto mode.
The following figure shows the bypass control keypad and identifies the keys and
LED indicating lights. The functions of the various keys and LEDs are described in
the following paragraphs.
Ready LED
Enable LED
Drive/Bypass
Select Keys
Bypass Run
Ready LED
The Ready LED is illuminated when the disconnect switch or circuit breaker is closed
and power is applied to the ACH550 and bypass.
Enable LED
The Enable LED is illuminated under the following conditions:
• Both the Safety Interlock and Run Enable contacts are closed.
• The Safety Interlock contact is closed with no Start command present.
The Enable LED flashes, if the Run Enable contact is open and when the Safety
Interlock contact is closed and a Start command is present.
The Enable LED is not illuminated when the Safety Interlock contact is open.
Start-up
LED
Bypass
Fault LED
Reset Key
Auto Key
E-Bypass Configurations for ACH550 Drives
Drive/Bypass
Selected LEDs
Drive and Bypass
Running/Stopped/
Faulted LEDs
Automatic LED
Auto LED
Hand LED
ON/Hand Key
OFF Key