Siemens SINAMICS S150 NEMA, Руководство по эксплуатации

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Functions, monitoring and protective functions
9.3 Drive functions
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
593
Parameterization
● Under unfavorable conditions, if the drive oscillates around the zero mark for one
revolution, a zero mark error can occur with the rough order of magnitude of the zero
mark width.
● This behavior can be avoided using the appropriate value of parameter p4686 "zero mark
minimum length". Parameter p4686 can be preassigned 3/4 of the zero mark width in
order to achieve the highest possible stable behavior. Parameter p4686 must be set less
than p0425 "Encoder, rotary zero mark distance".
● In order that the drive, for small inaccuracies, does not output fault F3x100 (N, A)
"Encoder x: Zero mark distance error"
1)
, a permissible deviation of the zero mark
distances can be set using p4680 "Zero mark monitoring tolerance permissible".
This parameter makes the system less sensitive to issuing fault F3x100
1)
, if p0430.22 = 0
(no pole position adaptation) and p0437.2 = 0 (no pulse number correction for faults) are
set.
1)
x = encoder number (x = 1, 2 or 3)
9.3.25.7 Signal edge evaluation (1x, 4x)
The "signal edge evaluation" function allows squarewave encoders with higher production
tolerances or older encoders to be used. Using this function, a "steadier" speed actual value
is calculated for encoders with an uneven pulse duty factor of the encoder signals. This
means, that e.g. for plant/system modernizations and upgrades, existing motors together
with the encoders can be used.
Commissioning
The "Signal edge evaluation" with p0437.4 and p0437.5 is set as follows:
p0437.4 p0437.5 Evaluation
0 0 4 x (factory setting)
0 1 Reserved
1 0 1 x
1 1 Reserved
Principle of operation
● For the 4x evaluation, both the rising and falling edges of a contiguous pulse pair on the A
and B tracks are evaluated.
● For the 1x evaluation, only the first or the last edge of a contiguous pulse pair on the A
and B tracks are evaluated.