6-8
IM DL850-03EN
Item
Specifications
Rms value:
s(n)
2
n = 1
N
1
N
The math period is from one zero crossing of the specified signal to the next zero
crossing.
Alternatively, the period is the specified time: 1 to 500 ms, resolution: 1 ms
Effective power:
(s1
•
s2)dt
1
T
0
T
The math period is the integrated value of the time from one zero crossing of the
specified signal to the next zero crossing.
Effective power integration:
(s1
•
s2)dt
0
T
The value “s1 × s2” is integrated over time.
Common logarithm (Log1):
K × Log10(s1/s2)
Common logarithm (Log2):
K × Log10(s1)
Square root (Sqr1):
s1
2
± s2
2
Square root (Sqr2):
s
Cosine:
cos(angle)
Sine:
sin(angle)
Arc tangent:
atan(s1/s2)
Electrical angle:
• Calculates the phase difference between (1) the angle that was determined
from the logic signals that were specified for phases A, B, and Z, and (2) the
fundamental wave component that was determined from the discrete Fourier
transform of the waveform that was specified as the target.
• Calculates the phase difference (electrical angle) between the angle of rotation
and drive current of the motor.
Knocking filter:
When the signal level of the math source waveform that is being differentiated is
less than or equal to the elimination level, the output is set to 0.
Coefficient multiplied by addition or subtraction of sources:
K × (s1 ± s2 ± s3 ± s4)
Range of coefficient K: –9.9999E+30 to +9.9999E+30
Period:
The period from one edge condition to the next edge condition is measured.
Resolution: 100 ns. Max. period: 10 s
Frequency:
The period is measured, and the frequency is calculated as 1/period.
Edge count:
Counts the specified edges
IIR:
Filter format:
IIR (Butterworth)
Filter type:
LPF, HPF, BPF
Filter order:
4
6.5 Features