EACON EC590 Series, Руководство пользователя

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EC590 Function parameters description EC590 Function parameters description
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5.5.4 Voltage Limit and Braking Unit Applied Voltage
When bus voltage rises above the value set in F3-22, the motor becomes regenerative. This fun-
ction prevents overvoltage trips by adjusting the output frequency to extend deceleration time in this
case.
If actual deceleration time cannot satisfy the requirement, increase the value of F3-10 (V/F over
-excitation gain) adequately.
Function Code
Parameter Name
Default
F3-22
Voltage limit
Setting Range
770.0V 650 to 800 V
F3-23
Voltage limit selection 1
0: Disabled 1: Enabled
F3-24 Frequency gain for voltage limit 30 0 to 100
F3-25 Voltage gain for voltage limit 30 0 to 100
F3-26
Frequency rise threshold during
voltage limit
5 Hz 0 to 50 Hz
F9-08 Braking unit applied voltage 760.0V 650 to 800 V
F3-10 V/F over-excitation gain 64 0 to 200
F3-11
V/F oscillation suppression gain 40 0 to 100
F9-03 Overvoltage protection gain
30
0 (no overvoltage stall) to 100
F9-04
Overvoltage protection voltage
770 V 650 to 800 V
Note
When using braking resistor, braking unit or energy feedback unit, pay attention
to the following aspects:
● Set F3-10 (V/F over-excitation gain) to 0. Otherwise, too large current may
occur during drive running.
● Set F3-23 (overvoltage suppression selection) to 0 (disabled). Otherwise, the
deceleration time may become longer.
5.5.5 Speed Loop
Function Code Parameter Name Default
F2-00
Speed loop proportional gain 1
Setting Range
30
0 to 100
F2-01
Speed loop integral time 1 0.50s
0.01 to 10.00s
F2-02
Switchover frequency 1 5.00 Hz
0.00 to F2-05
F2-03 Speed loop proportional gain 2
20
0 to 100
F2-04 Speed loop integral time 2 1.00s 0.01 to 10.00s
F2-05 Switchover frequency 2 10.00 Hz F2-02 to max. Frequency
F2-00 to F2-05 are speed loop PI parameters.
● If running frequency ≤ F2-02 (Switchover frequency 1), PI parameters are F2-00 and F2-01.
● If running frequency ≥ F2-05 (Switchover frequency 2), PI parameters are F2-03 and F2-04.
● If running frequency is between F2-02 and F2-05, PI parameters are obtained from linear
switchover between two groups of PI parameters, as shown in Figure 5-22.
Figure 5-22 Speed loop PI parameters
F2-00
F2-01
F2-03
F2-04
F2-02 F2-05
PI parameters
Frequency reference
To improve the system response, increase the proportional gain or reduce the integral time.
Remember to increase proportional gain first to ensure that the system does not oscillate, and then
reduce integral time to ensure that the system has quick response and small overshoot.
Note
Incorrect PI setting may cause large speed overshoots and a fast falling speed
drop may cause an overvoltage on the DC bus.