Chapter 12 Description of Parameter Settings|CFP2000 Series
12.2-00-5
If the switch point is too high, the active area of I/F will too wide, and then it will generate
larger current to make it cannot save energy. (The reason is that if the current of Pr10-31
sets too high, and the high switch point will make the drive keeps outputting with the
setting value of Pr10-31)
Voltage pulse width
Factory Setting:10
Settings 0~50 ms
The angle detection is 3:6-pulse. The parameter influences the value of pulse during the
angle detection. The larger the pulse is, the higher of the accuracy of rotator’s position.
But it might cause oc easily.
Increase the parameter when the running direction and the command are opposite while
start-up. If oc occurs in the start-up moment, then decrease the parameter.
Zero voltage time while start up
Factory Setting: 0.000
Settings 0.000~60.000 sec.
When the motor is in static status at the startup, the accuracy to estimate angles will be
increased. In order to make the motor in “static status”, the drive 3 phase U, V, W output
0V to motor to reach this goal. The Pr10-49 setting time is the length of time when
three-phase output 0V.
It is possible that even when this parameter is being applied but the motor at the
installation site cannot go in to the “static status” caused by the inertia or by any external
force. So, if the motor doesn’t go into a completer “static status” in 0.2 sec, increase
appropriately this setting value.
This parameter is functional only when the setting of Pr07-12 Speed Search during
Startup ≠0.
If Pr10-49 sets too high, the start-up time will be longer obviously. If is too low, then the
braking performance will be weak.
Injection Frequency
Factory Setting: 500Hz
Settings 0~1200Hz
This parameter is a High Frequency Injection Command when the motor drive is under
IPM HFI sensor-less control mode and it doesn’t often need to be adjusted. But, if a
motor’s rated frequency (i.e. 400Hz) is too close to the frequency setting of this
parameter (i.e. 500Hz), the accuracy of angles detected will be affected. Therefore, refer
to the setting of Pr01-01 before adjusting this parameter.
If the setting value of Pr00-17 is lower Pr10-51*10, then increase the frequency of carrier
wave.
Injection Magnitude
Factory Setting: 15/30V
Settings 0.0~200.0V
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