Siemens SINAMICS V20

Commissioning via the built-in BOP
5.6 Function commissioning
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012
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5.6.3.3 Starting the motor in blockage clearing mode
Functionality
This startup mode momentarily reverses the motor rotation to clear a pump blockage.
Typical application field
Pump clearing
Setting parameters
Parameter
Function
Setting
P3350[0...2] Super torque
modes
= 3: Enable blockage clearing mode
Note:
When the value of P3350 is changed, the value of P3353 is changed as follows:
• P3350 = 2: P3353 = 0.0s
• P3350 ≠ 2: P3353 = default
The ramp time of 0s gives an additional 'kicking' effect when hammer start is in use.
If blockage clearing mode is enabled (P3350 = 3), make sure that reverse direction is
not inhibited, i.e. P1032 = P1110 = 0.
P3351[0...2] BI: Super torque
enable
This parameter defines the source of the super torque enable. The setting is effective
when P3352 = 2.
Factory default: 0 (never enabled)
P3352[0...2] Super torque
startup mode
This parameter defines when the super torque function becomes active.
= 0: Enabled on first run after power-up
= 1: Enabled on every run
= 2: Enabled by digital input (enable source is defined by P3351; 0 = never enabled, 1
= enabled on every run)
P3353[0...2] Super torque ramp
time [s]
This parameter defines the ramp time to be used when ramping up to the super torque
frequency.
Range: 0.0 to 650.0 (factory default: 5.0)
P3361[0...2] Blockage clearing
frequency [Hz]
This parameter defines the frequency at which the converter runs in the opposite direc-
tion to the setpoint during the blockage clearing reverse sequence.
Range: 0.0 to 550.0 (factory default: 5.0)
P3362[0...2] Blockage clearing
reverse time [s]
This parameter sets the time for which the converter runs in the opposite direction to
the setpoint during the reverse sequence.
Range: 0.0 to 20.0 (factory default: 5.0)
P3363[0...2] Enable rapid ramp This parameter selects whether the converter 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 in-
troduces a "kicking" effect which helps to clear the blockage)
Range: 0 to 1 (factory default: 0)
P3364[0...2] Number of block-
age clearing cycles
This parameter sets the number of times the blockage clearing reversing cycle is re-
peated.
Range: 1 to 10 (factory default: 1)