Operating instructions

04/02 1 Parameters
MICROMASTER 420 Parameter List
6SE6400-5BA00-0BP0
23
r0231[2] Max. cable length
Min: -
Datatype: U16 Unit: m Def: -
P-Group: INVERTER Max: -
Indexed parameter to display maximum allowable cable length between inverter and motor.
Index:
r0231[0] : Max. allowed unscreened cable length
r0231[1] : Max. allowed screened cable length
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 Min: 0
CStat: CT Datatype: U16 Unit: - Def: 2
P-Group: INVERTER Active: first confirm QuickComm. No Max: 3
Selects reaction of inverter to an internal over-temperature.
Following physical values influence the inverter overload protection (see diagram):
- heat sink temperature
- inverter I²t
f_pulse
control
i_max
control
Heat sink
temperature
i
2
t
A0504
A0505
A0506
F0004
F0005
Inverter overload reaction
P0290
Possible Settings:
0 Reduce output frequency
1 Trip (F0004)
2 Reduce pulse frequency and output frequency
3 Reduce pulse frequency then trip (F0004)
Notice:
P0290 = 0:
Reduction of output frequency is usually only effective if the load is also reduced. This is for example valid
for variable torque applications with a quadratic torque characteristic as pumps or fans.
A trip will always result eventually, if the action taken does not sufficiently reduce internal temperature.
The pulse frequency is normally reduced only if higher than 2 kHz (see P0291 - configuration of inverter
protection).
P0291 Inverter protection Min: 0
CStat: CT Datatype: U16 Unit: - Def: 1
P-Group: INVERTER Active: Immediately QuickComm. No Max: 1
Control bit 0 for enabling/disabling automatic pulse frequency reduction at output frequencies below 2 Hz.
Bitfields:
Bit00 Pulse frequency reduced below 2Hz 0 NO
1 YES
Details:
See P0290 (inverter overload reaction)
P0292 Inverter overload warning Min: 0
CStat: CUT Datatype: U16 Unit: °C Def: 15
P-Group: INVERTER Active: first confirm QuickComm. No Max: 25
Defines temperature difference (in [°C]) between inverter over-temperature trip and warning thresholds.
Level:
3
Level:
3
Level:
3
Level:
3