
3.11 Selecting relay functions
See parameter 29.
3.12 Reading the error memory
The TURBO.DRIVE 400 is capable of permanently saving
up to 40 error events. The error codes are saved under
parameter number 171. In addition to each error code the
following is also saved:
■
Rotor frequency at the point of time when the error
event in parameter 174 occurred.
■
The corresponding number of operating hours in para-
meter 176.
Access to each of the 40 groups of values is accomplished
with the aid of an index value which needs to be stated
besides the parameter number when accessing via the pro-
tocol in accordance with VDI / VDE 3689. The range of
index numbers ranges from 0 to 39.
Operation
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17200492_002_A5 - 04/2011 - © Oerlikon Leybold Vacuum