MR TRAFOGUARD ISM, Operating Instructions Manual

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6 Functions and settings
Maschinenfabrik Reinhausen GmbH 2016 81 5163667/00 EN TRAFOGUARD® ISM®
Depending on whether positive or negative active power is measured, the
desired value calculation is based on 2 linear equations (see example in dia-
gram below).
Parameter Function Settings (see dia-
gram below)
U
max
: Maximum desired value Maximum set desired value is activated when
P
max
is exceeded.
103.0 V
U
min
: Minimum desired value Minimum set desired value is activated when
value falls below P
min
.
99.0 V
U
0
: Desired value at 0 active
power
Set desired value is activated when measured
active power is 0 MW. 100.00 V
P
max
: Active power at max.
desired value
Set maximum active power value above which
the power-dependent desired value is to attain
the maximum value U
max
.
20.0 MW
P
min
: Active power at min. de-
sired value
Set minimum active power value below which
the power-dependent desired value is to attain
the minimum value U
min
.
-20.0 MW
Table 10: Parameters to be set for active power-dependent adjustment of desired voltage value
Figure 75: Active power-dependent adjustment of desired voltage value
U
ref
Desired value U
min
Minimum desired value
P
meas
Measured active power U
max
Maximum desired value
P
min
Active power at minimum
desired value U
0
Set desired value when
measured active power =
0
P
max
Active power at maximum
desired value