Specifications

Commissioning
Siemens Building Technologies, Inc. 71
Parameter Description Action Setting/ Default
Motor Current: Flying Start
Defines search current used for
flying start. Value is in % based
on the rated motor current
(P0305).
1. Press
to enter the
SED2 parameter mode
and to display r0000.
2. Press
to advance
to parameter P1200.
3. Press
to access the
parameter values level.
4. Press
to advance
to desired value.
5. Press
to confirm
and save the setting.
Minimum: 10
Default: 100
Maximum: 200
P1202
NOTE:
Reducing the search current may improve performance for flying start if the
inertia of the system is not very high.
Search Rate: Flying Start
Sets factor by which the output
frequency changes during flying
start to synchronize with the
turning motor. This value,
entered in % relative to the
default time factor, defines the
initial gradient and influences
the time taken to search for the
motor frequency.
The search time is the time
taken to search through all
frequencies between
f_max + 2 × f_slip to 0 Hz.
1. Press
to enter the
SED2 parameter mode
and to display r0000.
2. Press
to advance
to parameter P1202.
3. Press
to access the
parameter values level.
4. Press
to advance
to desired value.
5. Press
to confirm
and save the setting.
Minimum: 10
Default: 100
Maximum: 200
P1203
NOTES:
1. P1203=100% is defined as giving a rate of 2% of f_slip,nom/ms.
2. P1203=200% would result in a rate of frequency change of 1% of
f_slip,nom/ms.
3. A higher value produces a flatter gradient, and thus a longer search time. A
lower value has the opposite effect.