Siemens SIMOVERT P 6SE2102–1AA01 Betriebsanleitung Seite 27

Parameter
Description
Number
P18∗
Overload Limit
P19 Automatic Boost
P20∗
Serial Interface Selection
5/10
Display
Setting
Notes
(Factory
Setting)
01.0 – This parameter sets the overload limit used during
automatic boost and overload current limit
03.0
operation. The current limit (set in P17) may be
exceeded for up to 60 s, providing the current
does not exceed P17 x P18. If this occurs, or in
any case after 60 s, the output frequency is
reduced until the current falls below the value of
P17.
The overload limit is also used during automatic
boost operation.
(01.5)
000 –
Automatic Boost Operation
Automatic boost is enabled when P19 is set to a
003
non–zero value. For correct operation, set P17 to
the nominal motor current as stated on the rating
plate. The next time the inverter is run after P19
has been set or adjusted to any value other than
zero, the inverter measures the motor resistance
and uses this value to calculate the required boost.
This value is written to parameter P01, where it
may be read but not changed. During the
calculation period (lasts a few seconds), 'CAL' is
indicated on the display. The inverter then starts
and runs normally.
The inverter can provide additional boost during
ramp–up by setting P19 to 002 or 003. In these
cases boost operates as normal (i.e. manually or
automatically derived) when the inverter is
running, but during ramp–up the boost percentage
is increased by the factor P18 to provide additional
torque during ramp–up. The boost reverts to that
defined by P01 when the set–point is reached.
Manual boost setting, no additional boost.
000
Automatic boost setting, no additional boost.
001
Manual boost setting, additional boost on
002
ramp–up.
Automatic boost setting, additional boost on
003
ramp–up.
(000)
000 Local operation – monitoring only via serial
interface.
001 Remote operation. Local controls disabled except
for P20, which can be selected and adjusted. If
P20 is changed while the inverter is operating then
it will stop. (See section 7 for further details.)
Note: The trip input remains active if P05 = 004,
005, 006 or 007.
002 USS Protocol (monitoring only)
003 USS Protocol (monitoring and control)
(000)
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