09.02 Start-Up
Siemens AG 6SE7087-6AK85-1AA0
4-45
Rectifier/Regenerating Unit Operating Instructions
4.3.9.8 Display modified parameters (P052 = 22)
This function is used to display all parameters (regardless of the access stage) that differ from the factory
setting (i.e. plant-specific parameters). This function only works with operator control via the PMU but not with
the OP1S.
Adjustable parameters that have no factory setting (P070) or whose value depends on other parameters
(P071,...) are regarded as "modified".
Those parameters that are dependent on P077 (see Section 4.3.9.1 "Factory setting") whose values differ from
the setting for P077=0 are also regarded as modified.
"Modified" parameters for "special access" are also displayed that are only accessible to specially trained
personnel using P799.
The "Display modified parameters" function can be selected in all operating statuses.
Procedure:
⇓ P052 = 22 Select the "Display modified parameters" function
⇓ P key Only parameters that differ from the factory setting appear on the PMU (i.e.
plant-specific parameters), irrespective of the access stage (P051). It is not
possible to modify the parameter value here.
⇓ P052 = 0 Select the Return function
⇓ P key
NOTE
Parameters r990 and r991 provide a list of modified parameters for the PMU and also for the OP1S.
4.3.10 Functions
4.3.10.1 WEA (automatic restart)
The Automatic Restart function can be used for the automatic acknowledgment of faults and automatic restart
of the unit following a power failure (F003, F004, F005, F007, F009 or F010) without the operator having to
intervene.
The rectifier/regenerative unit will react according to the selection below in the following scenarios: If the voltage
fails at one of the connections 1U/L1, 1V/L2, 1W/L3, 1U2/1T1, 1V2/1T2, 1W2/1T3, X9.1, X9.2 or if its values are
not within the permissible tolerance range and
if the period of so-called "self-synchronous operation" (see
further down) has expired and
if the DC link voltage has dropped below the threshold P074 * 1.35 * P071:
P366 = 0: WEA (automatic restart) is inhibited
No automatic restart; the relevant fault message (F003, F004, F005, F007, F009 or F010) is
initiated.
P366 = 1: Acknowledgment of power failure after system recovery
The rectifier/regenerating unit enters the operating status
o
008 (Switch-on inhibit) or
o
009 (when
switching on/off with the I/O keys of the PMU). On power recovery, a new ON command must be
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