YOKOGAWA WT3001E - Page 175

10-7
IM WT3001E-51EN
Waveform Computation (Option)
1
2
3
4
5
6
7
8
9
10
11
12
13
Index
Explanation
You can create two equations (Math1 and Math2).
• Setting the Equation
• Operand
The following operands can be combined to create an equation. There can be up to
16 operands in an equation.
Operand Description
U1 to U4 Voltage waveform of each input element
I1 to I4 Current waveform of each input element
P1 to P4 Voltagewaveform×currentwaveformofeachinputelement(instantaneous
power waveform)
TORQUE Torque signal waveform of the motor input
SPEED Speed signal waveform of the motor input
Pmi TORQUE×SPEED(instantaneouswaveformofmotoroutput)
K1 to K8 Constant
• Operator
The following operators can be combined to create an equation.
Operator Setting Example Description
+, –,
*
, / U1+I1 Four arithmetic operation of the specified waveform.
ABS ABS(U1) Absolute value of the specified waveform
SQR SQR(U1) Square of the specified waveform
SQRT SQRT(U1) Square root of the specified waveform
LOG LOG(U1) Natural logarithm of the specified waveform
LOG10 LOG10(U1) Common logarithm of the specified waveform
EXP EXP(U1) Exponent of the specified waveform
NEG NEG(U1) Negation of the specified waveform
AVG2 AVG2(U1
*
I1) Average of the specified waveform with an average
constant of 2
AVG4 AVG4(U1
*
I1) Average of the specified waveform with an average
constant of 4
AVG8 AVG8(U1
*
I1) Average of the specified waveform with an average
constant of 8
AVG16 AVG16(U1
*
I1) Average of the specified waveform with an average
constant of 16
AVG32 AVG32(U1
*
I1) Average of the specified waveform with an average
constant of 32
AVG64 AVG64(U1
*
I1) Average of the specified waveform with an average
constant of 64
• Number and Type of Characters That Can Be Used in the Equation
• Number of Characters
50 characters or less
• Types of Characters
Characters that are displayed on the keyboard and spaces
• Setting the Constants
The values can be set in the range of –9.9999E+30 to 9.9999E+30.
10.4 Setting the Waveform Equation