Emerson VSG & VSSG Troubleshooting Guide download pdf (Page 50)

VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL

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.

Unit Start Screen (Start / Stop Logic)

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Emerson VSG & VSSG Troubleshooting Guide Page 50