YOKOGAWA DL850E User Manual page 143

6.5 Features
Item
6-8
Specifications
Angle of rotation:
Specify the A, B, and Z phase signals, and the angle of the bit signal from the pulse
integration logic input is computed as an absolute value. Max. setting of the number
of pulses per rotation: 65535
Logic signal/analog waveform conversion:
Uses the logic signal as an analog signal, and performs a scaling conversion
Quartic polynomial:
4 3
A × s + B × s + C × s
Range of coefficients A, B, C, D, and E: –9.9999E+30 to +9.9999E+30
Rms value:
N
1
2
s(n)
N
n = 1
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:
T
1
(s1 s2)dt
•
T
0
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:
T
(s1 s2)dt
•
0
The value "s1 × s2" is integrated over time.
Common logarithm (Log1):
K × Log10(s1/s2)
Common logarithm (Log2):
K × Log10(s1)
Square root (Sqr1):
2 2
s1 ± s2
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
2
+ D × s + E
IM DL850E-03EN