Siemens SINAMICS V20 Operating Instructions Manual page 166

Parameter list
7.2 Parameter list
Parameter Function
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
•
Notice: P0290 = 0, 2:
Reduction of output frequency is only effective if the load is also reduced.
•
This is for example valid for light overload applications with a quadratic torque characteristic as pumps
or fans.
For settings P0290 = 0 or 2, the I-max controller will act upon the output current limit (r0067) in case of
•
overtemperature.
P0290 = 0:
With pulse frequencies above nominal, pulse frequency will be reduced to nominal immediately in the
•
event of r0027 greater than r0067 (current limit).
P0290 = 2, 3:
The pulse frequency P1800 is reduced only if higher than 2 kHz and if the operating frequency is be-
•
low 2 Hz.
The actual pulse frequency is displayed in r1801[0] and the minimal pulse frequency for reduction is
•
displayed in r1801[1].
Inverter I
•
A trip will always result, if the action taken does not sufficiently reduce internal temperatures.
P0291[0...2] Inverter protection
Bit 00 for enabling/disabling automatic pulse frequency reduction at output frequencies below 2 Hz. The
benefit is to reduce the noises at frequencies below 2 Hz.
Bit
00
01
02
Note: See P0290
166
Range
Reduce pulse frequency only and trip (F6) when overload too high
t (r0036); causes A505 and F5.
2
t acts upon output current and output frequency, but not on pulse frequency.
2
0 - 7
Signal name
Pulse frequency reduced below 2 Hz
Reserved
Phase loss detection enable
Factory Can be
default changed
1 T
Operating Instructions, 09/2014, A5E34559884
Scaling Data Data
set type
- DDS U16
1 signal 0 signal
Yes No
Yes No
Yes No
SINAMICS V20 Inverter
Acc.
Level
4