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13-19
IM WT3001E-51EN
Cycle-by-Cycle Measurement
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Index
13.5 Cycle-by-Cycle Measurement Specifications
Measurement Function
Item
Specifications
Measurement items
(Measurement functions)
Freq
Synchronization source frequency
U
Voltage
I
Rms current
P
Active power
S
Apparent power
Q
Reactive power
λ
Power factor
Speed
Torque
Pm
Mechanical power
Measurement cycle count
10 to 3000
Measurement timeout value
0, 1 to 3600 s (times out at approx. 24 hours if 0 is specified)
Frequency measuring range
1 Hz to 1 kHz (when the synchronization source for the cycle-by-cycle measurement is U or I)
0.1 Hz to 1 kHz (when the synchronization source for the cycle-by-cycle measurement is EXT
CLK)
Accuracy
U, I (direct input), P, Speed, and Torque
Add (0.3 + 2×f)% of r (0.05 + 0.05×f)% of range to the accuracy when the line filter
is OFF in normal measurement (with the line filter turned ON)
I (external current sensor input)
Add (100 + 100×f) µV to the accuracy above
Freq
Add (0.3 + 2×f) % of reading to the accuracy in normal measurement
The variable f is the frequency of the synchronization source for the cycle-by-cycle
measurement in unit of kHz.
Functional Limitations
Item
Specifications
Integration
Not allowed
Trigger Mode
OFF not selectable.
If cycle-by-cycle measurement is enabled while OFF is set, Auto is automatically selected.
Store
Not allowed
Synchronized measurement
Not allowed
Auto print
Not allowed
E-mail transmission
Not allowed
For a list of functional limitations, see appendix 10 in the
User’s Manual IM WT3001E-01EN
.