Commissioning
5.6 Function commissioning
SINAMICS V20 Inverter
88 Operating Instructions, 07/2012, A5E03728167
Parameter Function Setting
P3363[0...2] Enable rapid ramp This parameter selects whether the inverter ramps to, or starts
directly from, the blockage clearing frequency
= 0: Disable rapid ramp for blockage clearing (use ramp time
specified in P3353)
= 1: Enable rapid ramp for blockage clearing (jump to the
reverse frequency - this introduces a "kicking" effect which
helps to clear the blockage)
Range: 0 ... 1 (factory default: 0)
P3364[0...2] Number of blockage clearing cycles This parameter sets the number of times the blockage clearing
reversing cycle is repeated.
Range: 1 ... 10 (factory default: 1)
Function diagram
Description:
The blockage clearing mode is enabled when an ON command is issued, and the following
sequence is performed:
● Ramp or step (depending on P3363) to P3361 Hz in opposite direction to the setpoint
● For P3364 repetitions:
– Ramp down to 0 Hz using normal ramp time as specified in P1121
– Ramp or step (depending on P3363) to P3361 Hz in opposite direction to the setpoint
● Revert to "normal" setpoint and allow output to ramp using P1120.
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