NO.6 Detailed Function Description
31
frequency tracking downward and carry out tracking at the maximum speed. During
starting, the current may be relatively large and overcurrent or stalling phenomenon
may occur. It is necessary to pay attention to the adjustment of tracking current level.
P033 is generally set at about 100 and shall be specifically set as per the mechanical
inertia.
0: For deceleration stop, when P030 is 0, DC braking is invalid. When DC braking is invalid,
the inverter will decelerate to stop frequency and stop output, and motor will stop in
self-running manner. When P030 is not 0, DC braking is valid, after inverter decelerates to
stop frequency, it will stop in DC braking manner. When stopping, DC braking is usually used
for high-position stop or positioning control. Note: frequently using DC braking may cause
overheat of motor. Relevant parameters are P028, P030 and P031.
1: After free running stop inverter receives stop command, inverter will immediately stop
output and motor will stop in free running manner. Under such manner, DC braking is invalid.
Startup frequency refers to initial starting frequency of inverter, for instance, when the startup
frequency is set as 5.0 Hz, inverter will run between 5.0Hz to maximum operation frequency
after it is started at 5.0Hz.
Relevant parameters: P025, P029 and P031.
When inverter is under deceleration stop and frequency decreases to stop frequency, the
inverter will stop output or start DC braking stop.
When P030 is 0, the DC braking when stopping is invalid and inverter will stop output when it
decreases to P028. When P030 is set as valid, inverter will stop in DC braking manner when
it decreases to P028.
Relevant parameters: P028, P030 and P031.
DC braking time when
starting
This parameter will enter DC braking status when it is set as startup and will be input into
duration time of motor DC braking current. When it is set as zero, it means the DC braking is
invalid. Refer to Figure 6-4 for details.
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