Emerson VSG & VSSG Software Manual page 49

Stop Button
Pressing this button will stop the compressor unit. If the compressor unit is in Central mode
when the Stop button is pressed, the compressor controller enters Local-Stop-Lock mode.
The central system controller will no longer be able to command the compressor controller.
To return to any operational mode, see the description of Local-Stop-Lock Release Button
below.
NOTE: If the compressor unit does not stop, use the Emergency Stop button which is
hardwired to the compressor controller. If this does not stop the compressor, then the main
power disconnect must be opened.
Local-Stop-Lock Release Button
If the Stop key is pressed when in Central mode, the controller goes into Local-Stop-Lock
mode. In Local-Stop-Lock the controller prevents the compressor from being remotely
started. Press Local-Stop-Lock Release to take the Controller out of Local-Stop-Lock mode.
The controller must then be set to the desired mode from the Unit Start button.
Alarm Reset Button
Pressing this button will reset the Alarms.
Exit Button
Pressing this button will close the Unit Start box.
Help Button
Pressing this button will open an additional help screen.
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