Section VII Test runing and application
25
Before using this model, start motor with non-sudden jump model, if the motor
can not move due to static friction, then use this model; otherwise avoid to start this
mode to reduce the unnecessary high current impact.
7-2-4 Current ramp start mode
P9 items set 4, start mode is for this mode.
Chart 7.5 shows the current ramp start mode
output current waveform, which I1 is the current limit
set P6, T1 value is the time set by P1.
Current ramp start mode has a strong acceleration
ability, for bipolar motors, can also shorten the start-up
time within a certain range.
7-2-5 The voltage limiting double loop start mode
Set P9 as 5 to set start mode for this mode.
Double loop starting voltage limiting mode adopt voltage ramp and current limit
dual closed-loop control model, is both stable requires and strict current limiting
demanding, the integrated starter-limiting mode, it uses the prediction algorithm to
estimate the work status of the motor.
In this start mode, output voltage waveform will be based on the motor and load
conditions vary.
7-2-6 Monitor start mode
Started in this mode will run in direct starting, can monitor the operation of the
motor current and other parameters, when running overload, overvoltage or
undervoltage, fault output 5,6 terminal to cut output, also shows the corresponding
fault information.
7-3. PR5200(C) series soft starter's stop mode and application
PR5200(C) series soft starters, there are two stop modes, soft-stop mode and free
stop mode.
7-3-1 Soft stop mode
When Setting item P2 is not zero, set the stop mode for this mode.
In this stop mode, the motor power start from the bypass contactor and switch to
the output of soft starter thyristor, soft starter output voltage decrease steadily from
the total pressure, reducing the motor speed steady in order to avoid mechanical
shock, till the motor stops running. Soft stop output cut-off voltage equal to the initial
voltage of starting.
Soft stop mode can reduce and eliminate the surge of pump type load.
Soft stop mode can use setting item PF to set the soft stop current limit, in soft
stop, reduce the impact of high current, pay attention that, this soft start current limit
is a percentage calculated on the basis of starting current limit value.
7-3-2 Free stop mode
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