74 Chapter 5 Parameter Introductions
EV2000 Series Universal Variable Speed Drive User Manual
control mode is selected, the LED turns off; when serial
port control mode is selected, the LED flashes.
Note:
After selecting a control mode by using PANEL/REMOTE,
be sure to press ENTER/DATA key to confirm within 3
seconds.
Hundred’s place: Locking panel
0: not lock any key on the panel.
1: Locking up function is enabled and all keys on the
panel are locked up.
2: Except STOP/RESET, other keys are locked up.
3: Except XX, other keys are locked up.
4: Except RUN and STOP, all other keys are locked up.
After setting the parameter, you have to do certain
operation on the keypad to lock the panel. Please refer
to Figure 4-8.
F9.08 Fan control mode
Range:0. 1【0】
0: Auto stopping mode
The fan runs all the time when the drive is operating.
After the drive stops, its internal temperature detecting
program will be activated to stop the fan or let the fan
continue to run according to the IGBT’s temperature.
1: The fan operates continuously.
The fan operates continuously after the drive is switched
on.
F9.09 Unit of Acc/Dec time
Range: 0. 1【0】
F9.09 decides the unit of Acc/Dec time.
0: Second
1: Minute
This function is active for all the Acc or Dec process
except Jogging process.
Up to 60 hours’ Acc/Dec time can be set, suitable for the
application with a requirement of long Acc/Dec time.
Note
It is recommended to select “second” as the unit.
F9.10 Droop control
Range:0.00~10.00Hz【0.00Hz】
When several drives drive one load, the function can
make the drives share the load equally. An example is
shown in Fig. 5-65, 5 drives drive one conveying belt of
5 motors.
Drives
Motor
Belt
1
2 3 4 5
Load
Fig. 5-65 Droop control
When the load of one drive is heavier, this drive will
reduce its output frequency to shed part of the load
according to the settings of F9.10. You can increase the
setting gradually when testing. The relationship between
the load and the output frequency is shown in Fig. 5-66:
o
Torque
Rated
torque
Synchronuous speed
Droop control
No droop control
Speed
Fig. 5-66 Droop control
F9.11 Overshoot enabling
Range:0. 1【1】
When the AC supply voltage is lower than 85% of rated
load for a long time or the drive has driven a heavy load
for a long time, the drive can increase its output voltage
by increasing the utilization rate of DC bus voltage.
F9.11 decides whether to enable the overshoot function.
0: disabled
1: enabled
Note:
When overshoot function is enabled, output current
harmonics will increase.
F9.12 Threshold of
zero-frequency operation
Range: 0.00~650.00Hz
【0.00Hz】
F9.13 Hysteresis of
zero-frequency operation
Range: 0.00~650.00Hz
【0.00Hz】
F9.12 and F9.13 are used to set the zero-frequency
operation hysteresis.
Take CCI current reference for example, see Fig.5-67:
Starting process
After the running command is sent out, the motor will
start and accelerate to the frequency corresponding to
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