Siemens 440 - Manual (Page 71)

Issue 01/06 Parameter Description
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
71
End temperature Insulation class
Y
A
E
B
F 90 °C
105 °C
120 °C
130 °C
155 °C
H 180 °C
Extract of IEC 85
The motor overheating disturbance threshold is automatically set by the inverter at 10% higher than the
temperature declared in parameter P0604.
If the sensor KTY84 is activated, the motor temperature is then additionally calculated via the thermal motor
model. Should the sensor KTY84 recognise a wire breakage, an alarm F0015 (loss of the motor
temperature signal) is then generated and the thermal motor model is automatically switched to.
Connection failure:
If the connection to the PTC or KTY84 sensor becomes open circuit or short circuit, a fault will be indicated,
and by default the drive will trip.
P0604[3] Threshold motor temperature Min: 0.0
CStat: CUT Datatype: Float Unit: °C Def: 130.0
P-Group: MOTOR Active: Immediately QuickComm.: No Max: 200.0
Enters warning threshold for motor temperature protection.
The trip temperature defined always 10 % higher than the warning level P0604. When act. motor
temperature exeeds trip temperature than inverter trip as defined in P0610.
ϑ
warn
:
ϑ
trip
: Trip threshold (max. permissible temperature)
P0604 1.1 1.1
warn trip
⋅ = ⋅ = ϑ ϑ Warning threshold (P0604)
Index:
P0604[0] : 1st. Drive data set (DDS)
P0604[1] : 2nd. Drive data set (DDS)
P0604[2] : 3rd. Drive data set (DDS)
Dependency:
This value should be at least 40°C greater than the motor ambient temperature P0625.
P0604 ≥ P0625 + 40 °C
Note:
Default value depends on P0300 (select motor type).
P0610[3] Motor temperature reaction Min: 0
CStat: CT Datatype: U16 Unit: - Def: 2
P-Group: MOTOR Active: first confirm QuickComm.: No Max: 2
Defines reaction when motor temperature reaches warning threshold.
Possible Settings:
0 Warning, no reaction, no trip
1 Warning, Imax reduction, trip F0011
2 Warning, no reaction, trip F0011
Index:
P0610[0] : 1st. Drive data set (DDS)
P0610[1] : 2nd. Drive data set (DDS)
P0610[2] : 3rd. Drive data set (DDS)
Dependency:
ϑ
warn
:
ϑ
trip
: Trip threshold (max. permissible temperature)
P0604 1.1 1.1
warn trip
⋅ = ⋅ = ϑ ϑ Warning threshold (P0604)
Note:
P0610 = 1:
If the max. permissible current Imax is reduced, this results in a lower output frequency.
The motor temperature depends on many factors. These factors include the size of the motor, the ambient
temperature, the previous motor load and naturally the load current.
Because most motors are cooled by fans integrated in the motor and running at the motor speed, the speed
of the motor is also important. Clearly a motor running with a high current (maybe due to boost) and a low
speed, will overheat more quickly than one running at 50 or 60 Hz, full load. The MM4 take account of these
factors.
Level
2
Level
3