Chapter 4 Functions; Processing Each Function - Mitsubishi Electric MELSEC-Q series User Manual

CHAPTER 4
This chapter describes the details of the CT input module's function, and the setting procedures for the functions.
For details on I/O signals and the buffer memory, refer to the following.
• Details of I/O Signals (
• Details of Buffer Memory Addresses (
4.1

Processing Each Function

A CT input value and digital value are processed in the following order. If multiple functions are enabled, the output of
the first-processed function is used as the input for the next function.
CT input Input signal Peak current
value error detection detection
(CH1 to CH8) function function
(1) CT input value
This is an alternating current value measured using a CT. This is a primary current which a CT imports.
(2) Digital output value
A digital value after the sampling processing or an averaging process was performed.
(3) Scaling value
This is a digital output value which was performed scale conversion.
(4) Maximum and minimum values
Either of the following are stored.
• The maximum and minimum digital output values (when the scaling function is disabled.)
• The maximum and minimum scaling values (when the scaling function is enabled.)
(5) Logging data
A digital output value or scaling value is collected.
FUNCTIONS
Page 78, Section 5.2)
Page 104, Section 6.2)
Dropout Averaging
function process
Scaling function

CHAPTER 4 FUNCTIONS

Digital output
value
Warning
Logging
output
function
function
Scaling value
4
Minimum value
Maximum value
Logging data
33