DORNA TECHNOLOGY H300 Series, User Manual

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During switchover between forward rotation and reverse rotation, the startup frequency holding time
is disabled. The holding time is not included in the acceleration time but in the running time of simple
PLC.
Example 1:
P0.03 = 0
The frequency source is digital setting.
P0.08 = 2.00Hz The digital setting frequency is 2.00 Hz.
P6.03 = 5.00Hz The startup frequency is 5.00 Hz.
P6.04 = 2.0s The startup frequency holding time is 2.0s.
In this example, the Inverter stays in the standby state and the output frequency is 0.00 Hz.
Example 2:
P0.03 = 0
The frequency source is digital setting.
P0.08 = 10.00Hz The digital setting frequency is 10.00 Hz.
P6.03 = 5.00Hz
The startup frequency is 5.00 Hz.
P6.04 = 2.0s The startup frequency holding time is 2.0s.
In this example, the inverter accelerates to 5.00 Hz, and then accelerates to the set frequency 10.00Hz
after 2s.
P6.05
Startup DC braking
current/Pre-excited current
0%~100% 0%
★
P6.06
Startup DC braking
time/Pre-excited time
0.0s~100.0s
0.0s
★
Startup DC braking is generally used during restart of the inverter after motor stops. Pre-excitation is
used to make the inverter build magnetic field before startup to improve the responsiveness.
Startup DC braking is valid only for direct start (P6.00 = 0). In this case, the inverter performs DC
braking at the set startup DC braking current. After the startup DC braking time, the inverter starts to
run. If the startup DC braking time is 0, the inverter starts directly without DC braking. The larger the
startup DC braking current is, the larger the braking force is.
If the startup mode is pre-excited start (P6.00 = 3), the inverter builds magnetic field based on the
pre-excited current. After the pre-excited time, the inverter starts to run. If the pre-excited time is 0,
the inverter starts directly without pre-excitation.
The startup DC braking current or pre-excited current is a percentage relative to the base value.
• If the motor rated current is less than or equal to 80% of the inverter rated current, the base value is
the motor rated current.
• If the motor rated current is greater than 80% of the inverter rated current, the base value is 80% of
the inverter rated current.
P6.07
Acceleration/ Deceleration
mode
Linear acceleration/deceleration
0
0
★
S-curve acceleration/deceleration A 1
S-curve acceleration/deceleration B
2
0: Linear acceleration/deceleration.
The output frequency increases or decreases in linear mode. The H300 provides four group of
acceleration/deceleration time, which can be selected by using P4.00 to P4.08.