Shinko PCD-33A - Page 57

57
If the setting
indication does not
change in the rated
scale range even if
the , keys are
pressed, and settings
are impossible.
• SV high limit or low limit in Auxiliary function setting
mode 1 may be set at the point the value does not
change.
Set it ( , or ) again while in Auxiliary
function setting mode 1. (p.31)
<Control>
Problem Presumed cause and solution
If process variable
(temperature) does
not rise.
• Thermocouple or RTD is burnt out.
• Lead wire of thermocouple or RTD is not securely
connected to the instrument terminals.
• Direct (Cooling) action [ ] has been selected in
the Direct/Reverse action selection [ ].
Select Reverse (Heating) [ ] action. (p.20)
If the control output
(OUT) remains ON
status.
• Control output low limit setting value is set to 100%
or greater in Auxiliary function setting mode 2. (p.17)
• The proportional band is set to extremely small value.
Set the value appropriately. (p.28)
If the control output
(OUT) remains OFF
status.
• Main output high limit setting value is set to 0% or
less in Auxiliary function setting mode 2. (p.17)
• The proportional band is set an extremely high value.
Set the value appropriately. (p.28)
Step numbers
progress fast and
program control stops
soon after it is
started.
• The program has not been set.
Set the program from the Pattern (Step SV/Time)
setting mode. (pp.25, 26)
• The default value is PV start.
If the PV is higher than the Step SV, the program
advances and it ends soon. (p.17)
The step does not
proceed
• Wait function is working.
Release the wait function.
• The fixed value control is performing due to Hold
function.
Press the RUN key for more than 1 second to
release the Hold function. (p.39)
If any unexplained malfunctions occur other than the above mentioned,
make inquiries at our agency or the shop where you purchased the unit.