HNC Electric HV590 Series, Руководство пользователя

Страница: 71 / 192

57
Section V. Parameter Function Table
Fig. 5-4 Multi-point V/F curve setup schematic diagram
P3.09
V/F slip compensation gain 0%~200.0%
0.0%
☆
This parameter is only valid for asynchronous motor.
VF slip compensation can compensate asynchronous motor speed deviation ,in this way ,motor rotary
speed could be maintained in basically stable state during load change. In general, 100% corresponds to
the rated slip of the motor with rated load. For motor rated slip , it can be get through auto calculation of P1
motor rated frequency and rated revolving speed.
The slip compensation gain adjustment may be performed referring to the following principle
：
When
the load is rated load, and the slip compensation coefficient is set to 100%, the rotary speed of the motor is
close to the reference speed.
P3.10
VF over-excitation gain 0~200
64
☆
The role of over excitation gain function is to suppress the rise of bus voltage during the inverter
deceleration process, thus avoiding occurrence of over voltage fault due to bus voltage exceeding over
voltage protection limitation value. The higher the over excitation gain is, more powerfully the suppression
effect is. The setting is described as follows
：
In the applications where over-voltage alarm easily occurs, it needs to improve the over-excitation
gain. Excessive over-excitation gain easily lead to increasing of output current .Users should keep the
balance during operation.
In the applications where the inertia is very low, the over excitation gain is set to 0, while in the
applications where there is brake resistor ,the over excitation gain is set to 0 as well.
P3.11
VF oscillation suppression
gain
0~100
-
☆
When the motor has no oscillation, please select this gain to 0. Only when the motor has obvious
oscillation and Yes not run normally can the gain be properly increased. The bigger the gain is, the better
oscillation suppression result will be.
The gain shall be set as small as possible under the condition that the oscillation is suppressed
effectively so as to avoid high influences on the V/F operation.
Accurate motor rated current and no-load current parameters are required during using oscillation
suppression function, or VF oscillation suppression effect will not be excellent.
P3.13 VF separation voltage source
Digital setup(P3.14)
0
0
☆
AI1 1
AI2 2
AI3(Potentiometer) 3
F1
Frequency %
Voltage %
Vb
V3
V2
V1
F2
F3 Fb
V1-V3
：
MS speed V/F 1~3 segment
voltage proportion
F1-F3
：
MS speed V/F 1~3 segment
frequency proportion
Vb
：
Rated motor frequency
Fb
：
Rated motor running frequency