Commissioning Additional Monitoring Functions - Siemens SINAMICS S120 System Manual

Times in s
Low frequency (LFRT)
p5558[0] = 0.00
p5558[1] = 0.20
p5558[2] = 0.20
p5558[3] = 0.70
p5558[4] = 0.70
p5558[5] = 1.50
p5558[6] = 1.50
p5558[7] = 2.98
p5558[8] = 2.99
p5558[9] = 3.00
Notes
● The times in p5556[x] or p5558[x] must be entered in ascending order.
For example, for simply parameterizing steps, the same consecutive times are
permissible.
● The time in p5556[9] or p5558[9] defines the maximum duration of a fault ride through
and must therefore always be defined.
Fault F6851 is output if the frequency does not return to the tolerance band within this
time.
If not all of the interpolation points are required, then the interpolation points before point
p5556[9] or p5558[9] can be assigned the same voltage values.
7.8.4

Commissioning additional monitoring functions

Some grid codes require that the grid is checked for a defined period of time before
switching on the power generating system.
Especially when the automatic restart function is active, the automatic switch-on is prevented
until the grid has completely returned.
The activation of the voltage and frequency check before synchronization is indicated using
r5542.14.
When the voltage and frequency limits are exceeded, this is displayed in r5542.6 ... r5542.9.
Activating
The monitoring is activated with p5540.9 = 1.
In addition, the corresponding threshold values must be set in p5543[2, 3] and p5544[2, 3];
these thresholds are deactivated in the default setting.
Grid infeed
System Manual, 04/2015, A5E03347436A
7.8 Commissioning of dynamic grid support
Frequency values in Hz
p5559[0] = -1.6
p5559[1] = -1.6
p5559[2] = -1.1
p5559[3] = -1.1
p5559[4] = -0.6
p5559[5] = -0.6
p5559[6] = -0.4
p5559[7] = -0.4
p5559[8] = -0.4
p5559[9] = -0.4
Commissioning
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