SycoTec easyDive 4425 - Motor Operating Values

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43
8.10 Motor Operating Values
These parameter values are displayed depending on the chosen motor type. The assignment to the
individual motor types is shown in square brackets.
P41 f_mot_min [ASM, -, -]
Absolutely minimum inverter frequency, set internally to 0 in the case of BLDC and BLDCS motors.
In ASM motor, serves for establishing the lower limit of the inverter frequency.
Minimum value: 30 Hz
Maximum value: 100 Hz
Factory setting: 50 Hz
P42 f_mot_max [ASM, BLDC, BLDCS]
Absolutely maximum inverter frequency. The output frequency of the inverter is limited to this value to
protect the motor.
This value is set to the maximum rated frequency in the case of ASM motors; in the case of BLDC and
BLDCS motors, this value should be set about 10% higher than the maximum rated frequency. In
addition, this parameter must be set larger than P41-f_mot_min
Specific values: f_mot_nom
- f_mot_max is taken from the nominal motor frequency P91-f_mot_nom
Minimum value: 101 Hz
Maximum value: 4,000 Hz
Factory setting: f_mot_nom (see P91)
P44 I_limit [ASM, BLDC, BLDCS]
Limitation of phase current for normal motor running. The inverter limits the output current to I_limit.
The stop current (P57-I_DC_stop) and, in the case of the BLDC motor, the start-up current (P52-I_start)
are unaffected by this.
Specific values: 1.5*I_nom
- I_limit is set to 1.5 times the nominal motor current from P93-I_mot_nom.
Minimum value: 0.5 A
Maximum value: 16 A
Factory setting: 1.5*I_nom (see P93-I_mot_nom)
P46 t_rise [ASM, BLDC, BLDCS]
Rise time of frequency 0 to P42-f_mot_max
The rise time is effective at motor start and in the case of changes of nominal frequency. If the rise time is
set too small, the motor current increases up to the current limit P44-I_limit, thus automatically
increasing the rise time.
Minimum value: 0.5 sec
Maximum value: 400 sec
Factory setting: 5 sec
P47 t_fall [ASM, BLDC, BLDCS]
Delay from P42-f_mot_max to frequency 0.
The delay is effective in the case of changes of nominal frequency and in the case of a motor stop only if
P48-t_stop is set to t_fall.
Minimum value: 0.5 sec
Maximum value: 400 sec
Factory setting: 5 sec