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IM WT1801-01EN
Wiring Unit Harmonic Measurement Functions (Σ functions)
Measurement
Function
Characters or Numbers
in Parentheses
Total 1
UΣ( ) Yes Yes
IΣ( ) Yes Yes
PΣ( ) Yes Yes
SΣ( ) Yes Yes
QΣ( ) Yes Yes
λΣ( ) Yes Yes
Functions with parentheses will produce different values depending on which of the following is contained in their
parentheses.
• T
otal: Total value
• 1: Fundamental harmonic value
Delta Computation Functions (Option)
Function Description
Δ
U1
The values returned by the delta computation
functions vary depending on the specified delta
computation type.
Δ
U2
Δ
U3
Δ
U
Σ
Δ
I
Δ
P1
Δ
P2
Δ
P3
Δ
P
Σ
For details about delta computation functions, see “Delta Computation (Δ Measure; optional).”
Motor Evaluation Functions (Option)
Function Description
Speed Motor rotating speed
Torque Motor torque
SyncSp Synchronous speed
Slip Slip (%)
Pm Mechanical output of the motor (mechanical power)
EaU1 to 6
*
Electrical angle: Phase angles of U1 to I6 with the
falling edge of the signal received through the Z
terminal of the motor evaluation function as the
reference.
EaI1 to 6
*
* On models with the harmonic measurement option or the simultaneous dual harmonic measurement
option.
Auxiliary Input Measurement Functions (Option)
Function Description
Aux1 Auxiliary input 1
Aux2 Auxiliary input 2
High Speed Data Capturing Measurement Functios (Option)
• For the U and I of each input element and wiring unit: Select rms, mean, dc, or r-mean.
• The P of each input element and wiring unit
• Motor evaluation function (option) speed, torque, and Pm
• Auxiliary inputs (option) Aux1 and Aux2
• The maximum and minimum values of the above measurement functions
1 Items That This Instrument Can Measure
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