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4. Parameter description
Parameter
4.58 DC Injection Brake Function before Starting (P.242~P.244)
P.242 “
DC
injection
brake function before starting selection
”
P.243 “
DC
injection
brake time before starting
”
P.244 “
DC
injection
brake
voltage
before starting
”
Related parameters
P.13
“
Starting frequency
”
Parameter
Factory setting
Setting range
Remarks
242
0
0~1
---
243
0.5s
0~60s
---
244
4%
0~30%
---
<Setting>
• If P.242=0, the DC injection brake function before starting is not selected. If P.242=1, the DC brake
injection function before starting is selected. When the output frequency reached the starting
frequency (P.13), a DC voltage (P.244) will be injected into the motor windings by the inverter,
which is used to lock the motor rotor. The DC brake operation will last a period (the set value of
P.243), the motor will start.
As shown as follows:
time
time
P.243
P.13
P.244
Output
frequency
DC injection
brake voltage
Note: This function is valid in V/F curve. It means P.300 must be set to 0.
4.59 Bypass-inverter Switchover Function (P.247~P.250)
P.247 “MC switchover interlock time”
P.248 “Start waiting time”
P.249 “Automatic switchover frequency from inverter to commercial power
supply frequency”
P.250 “Automatic switchover frequency range from commercial power supply to
inverter”
