8.3 How to Use Error Output
E5AK
8--5
8.3 How to Use Error Output
The E5AK controller allows you to assign error output to terminals as out-
puts.
For details on output assignments, see 3.3 Setting Output Specifications
(page 3-6).
·
LBA (Loop Break Alarm) can be used as a means for detecting loop
breaks when the control loop is not functioning normally. For details, see
page 4-15.
·
LBA allows you to detect the following errors:
(1) Heater burnout
(2) Output error (contact weld, damaged transistors, etc.)
(3) Sensor error (constant input values, etc.)
·
If you use the LBA function, set the loop break detection time matched
to the control characteristics in the “LBA detection time” parameter
(level 2 mode).
·
If you assign error 1 as the output, an error can be output to auxiliary
output 1 or auxiliary output 2 when input is in error. When this error
occurs, remedy by following the description for “Input error” (page 8-3).
·
If you assign error 2 as the output, an error can be output to auxiliary
output 1 or auxiliary output 2 when the A/D converter is in error. When
this error occurs, remedy by following the description for “A/D converter
error” (page 8-3).
·
If you assign error 3 as the output, an error can be output to auxiliary
output 1 or auxiliary output 2 when the remote SP input error occurs
while the remote SP function is enabled. For details on error displays
and meanings, see Chapter 4 Applied Operation/4.4 How to Use the
Remote SP (page 4-11).
·
When an error occurs, check the state of the remote SP connection. If the
lead is broken or disconnected, the remote SP scaling lower limit is dis-
played blinking on the PV/SP display or remote SP monitor display.
F
LBA
F
Input errors
F
A/D converter
error
F
Remote SP input
error