5-5
IM 253710-01E
Setting the Measurement Mode and Range
5
Note
•
Check that the power measurement modules are installed in order starting from the element
number 1 slot. If you leave the slots that have smaller element numbers empty,
measurements will not be made properly. (For example, do not install a power measurement
module into the element number 2 slot and leave the element number 1 slot empty. Do not
install power measurement modules into element number 1 and 3 slots and leave the element
number 2 slot empty.) For the procedures on installing the modules, see section 3.3,
“Installing the Input Module.”
•
When the sensor input module is installed into the element number 4 slot, only up to three
power measurement modules can be installed. In this case, you cannot select a wiring
method that uses four power measurement modules.
•
Select the wiring method that matches the actual wiring of the circuit. The method in
determining the
Σ
functions varies depending on the wiring method. If the wiring method
selection is not correct for the circuit, the measurement/computation results will not be
correct.
•
When the data acquisition is stopped and you wish to determine the
Σ
functions for the case
when the wiring method is switched, re-compute the numerical data (see section 10.1).
•
For details pertaining to the relationship between the wiring method and
Σ
functions, see
Appendix 2.
5.2 Selecting the Wiring Method