Emheater EM12 Series, Руководство пользователя

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EM12 User’s Manual 5. Description of Function Codes
97
d1-18
Speed loop integral property
Default
0
Setting
Range
0 Integral separation disabled
1 Integral separation enabled
For SVC, it is used to adjust speed stability accuracy of the motor. When the motor with load runs at a very low
speed, increase the value of this parameter; when the motor with load runs at a very fast speed, decrease the value
of this parameter.
For FVC, it is used to adjust the output current of the frequency inverter with same load.
d1-19
PM field weakening mode of synchronous motor Default 1
Setting
Range
0 Invalid field weakening
1 Direct calculation
2 Automatic adjustment
d1-20
PM field weakening depth of synchronous motor
Default
100%
Setting Range
50%~500%
d1-21
Maximum current of PM field weakening Default 50%
Setting Range 1%~300%
d1-22
PM Field weakening automatic adjustment gain Default 100
Setting Range 10~500
d1-23
PM Field weakening integral multiple
Default
2
Setting Range
2~10
These parameters are used to set field weakening control for the synchronous motor.
If d1-19 is set to 0, field weakening control on the synchronous motor is disabled. In this case, the maximum
rotational speed is related to the frequency inverter DC bus voltage. If the motor's maximum rotational speed
cannot meet the requirements, enable the field weakening function to increase the speed.
The EM12 provides two field weakening modes: direct calculation and automatic adjustment.

In direct calculation mode, directly calculate the demagnetized current and manually adjust the demagnetized
current by parameter d1-20. The smaller the demagnetized current is, the smaller the total output current is.
However, the desired field weakening effect may not be achieved.

In automatic adjustment mode, the best demagnetized current is selected automatically.
This may influence the system dynamic performance or cause instability.
The adjustment speed of the field weakening current can be changed by modifying the values of d1-22 and d1-23.
A very quick adjustment may cause instability. Therefore, generally do not modify them manually.
d1-24
Torque setting source in torque control Default 0
Setting
Range
0 Digital setting (d1-27)
1 AI1
2 AI2
3 AI3
4 Pulse setting (HDI)
5 Communication setting
6 MIN (AI1, AI2)
7 MAX (AI1, AI2)
d1-26
Torque digital setting in torque control
Default
150.0%
Setting Range
-200.0%~200.0%
The d1-24 is used to set the torque setting source. There are a total of eight torque setting sources.
The torque setting is a relative value. 100.0% corresponds to the frequency inverter's rated torque. The setting