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Measured Values Computation
Optional Process Interface Formulas10
10-7
Note
For definitions and formulas see EN61000-4-7 Ed 2.1
For all grouping modes (except the Spectral Components) distortion factors are calculated:
Harmonic Components:
[%] only
Harmonic Groups:
[%] only
Harmonic Subgroups:
[%] only
Centered Inter-harmonic Subgroups:
[%] only
Harmonic and Inter-harmonic Subgroups:
[%] only
Note
TIDS and THDT are not defined in the EN standard.
Optional Process Interface Formulas
Torque M
d
=
−∗
T
M
t
M
dd
Zdtu
T
S
0
)(
1
M
d
torque in Nm
S
Md
scale factor for torque in Nm/V or in Nm/Hz
Z
Md
zero offset for torque in V or in Hz
u
(t)
analogue torque signal at measuring input
or
pulses of digital torque signal at measuring input
T averaging interval in seconds
Speed (pulse input): n =
−∗∗
n
T
n
Zpulses
TS
0
60
11
n speed in 1/min
S
n
scale factor pulse transmitter in pulses/revolution
Z
n
zero offset for pulse transmitter in Hz (typically =0)
T averaging interval in seconds
Speed (analogue input): n =
−∗
T
n
t
n
Zdtu
T
S
0
)(
1
n speed in 1/min
S
n
scale factor for speed in rpm/V
Z
n
zero offset for speed in V
u
(t)
analogue speed signal at measuring input
T averaging interval in seconds
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