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Version 2.02 15.05.2007
Function of VS 3000
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3.31 Starting characteristics
Differentiation is made between two conditions when starting the controller:
- First start
- Restart
3.31.1 First start
First start of the VS 3000 Pack Controller can be initiated in various ways:
- On first starting the system (default parameters are loaded on controller first start)
- After updating the firmware
- After changing the operating mode by the coding switches of DIP Switch S1
(See Section 4 - Installation and Startup for details)
- NT and LT: The set of parameters depends on the refrigeration system
(normal-temperature - NT, or low-temperature - LT)
- Number of external SIOX extension modules (0, 1 or 2)
- With or without discharge gas defrosting (optional SIOX extension module)
- If parameter setting is found to be incorrect by self-check
All variables, except the parameters, are set to zero. Default parameters are loaded. Owing to the
large number of parameters, the basic settings can also be loaded by using an operator terminal
(menu 7).
3.31.2 Restart
Restart takes place following return of power after an outage, provided the parameter settings have been pre-
served.
All variables, except the parameters, the fault memory and the archived data, are deleted.
3.32 Monitoring refrigerant level
A liquid level switch (Digital Input 23) signals to the controller when liquid level in the receiver falls below the
low-level setpoint. Low refrigerant level does not affect control and regulating functions. Alarm is actuated after a
definable time.
3.33 Monitoring burst disk
The controller can monitor a bursting disk via Digital Input 22. Alarm is generated if the input is de-energized.
Alarm forwarding takes place according to the preselected priority. The digital input has no effect on the control
and regulating functions.