Siemens SINAMICS V20 Series Operating Instructions Manual page 132

Parameter list
7.2 Parameter list
Parameter Function
Note: For best results, it is recommended that auto-detection of Vdc switch-on levels (P1254 = 1) is used.
Setting P1254 = 0 is only recommended when there is a high degree of fluctuation of the DC-link when the
motor is being driven. In this case, ensure the setting of P0210 is correct.
If mains voltage is higher than value entered, automatic deactivation of the Vdc controller may occur to
avoid acceleration of the motor. A warning will be issued in this case (A910).
Default value is depending on inverter type and its rating data.
r0231[0...1] Maximum cable length
[m]
Indexed parameter to display maximum allowable cable length between inverter and motor.
Index: [0]
[1]
Notice: For full EMC compliance, the screened cable must not exceed 25 m in length when an EMC filter is fitted.
P0290 Inverter overload
reaction
Selects reaction of inverter to an internal thermal overload condition.
0
1
2
3
Dependency: Following physical values influence the inverter overload protection (see diagram):
Heat sink temperature (r0037[0]); causes A504 and F4.
•
IGBT Junction temperature (r0037[1]); causes F4 or F6.
•
Delta temperature between heat sink and junction temperature; causes A504 and F6.
•
Inverter I
•
132
Range
-
Maximum allowed unscreened cable length
Maximum allowed screened cable length
0 - 3
Reduce output frequency and output current
No reduction, trip (F4 / 5/ 6) when thermal limits reached
Reduce pulse frequency, output current and output frequency
Reduce pulse frequency only and trip (F6) when overload too high
t (r0036); causes A505 and F5.
2
2
I t
Factory Can be
default changed
- -
2 T
Scaling Data
set
- -
- -
SINAMICS V20 Inverter
Operating Instructions, 07/2012, A5E03728167
Data Acc.
type Level
U16 3
U16 3