Mitsubishi Electric MELSEC iQ-R Series User Manual page 89

4.
Monitor 'CT1 Heater current process value' (Un\G2030) and check the current value of when the heater is ON.
5.
Set the value monitored with 'CT1 Heater current process value' (Un\G2030) in "Reference heater current value."
6.
Set a judgment value to detect heater disconnections and output OFF-time current errors as a rate (%) of the reference
heater current value in "Heater disconnection alert setting" of "Heater disconnection detection setting" in "Application
Setting."
[Navigation window]  [Parameter]  Target module  [Application Setting]
7.
Set how many times heater disconnections are detected successively to regard the heater as disconnected for "Heater
disconnection/output OFF-time current error detection delay count" of "Heater disconnection detection setting" in
"Application Setting."
• The standard setting value for "Heater disconnection alert setting" of "Heater disconnection detection
setting" in "Application Setting" is 80%. However, the current value may significantly change depending on
the characteristics of a heater or how the heater is used. Check that there is no problem in the actual
system.
In the R mode
• An out of setting range error (error code: 1950H) occurs when "0:CTL-12L-8 (0.0 to 100.0A)," "2:CTL-12-
S36-10/CTL-12-S56-10(0.0 to 100.0A)" or "3:Use CT Ratio Setting (0.0 to 100.0A)" has been set for "CT
selection" of "CT setting" and the current value to be used as a judgment value to detect heater
disconnections (Reference heater current value  CH Heater disconnection alert setting (%)) is smaller
than 0.1A.
• In addition, an out of setting range error (error code: 1950H) occurs when "1:CTL-6-P-H/CTL-6-S-H (0.00 to
20.00A)" has been set for "CT selection" of "CT setting" and the current value to be used as a judgment
value to detect heater disconnections (Reference heater current value  CH Heater disconnection alert
setting (%)) is smaller than 0.01A.
In the Q compatible mode
• An out of setting range error (error code: 1950H) occurs when "0:CTL-12-S36-8 (0.0 to 100.0A)" or "2:Use
CT Ratio Setting (0.0 to 100.0A)" has been set for "CT selection" of "CT setting" and the current value to be
used as a judgment value to detect heater disconnections (Reference heater current value  CH Heater
disconnection alert setting (%)) is smaller than 0.1A.
• In addition, an out of setting range error (error code: 1950H) occurs when "1:CTL-6-P/CTL-6-P-H (0.00 to
20.00A)" has been set for "CT selection" of "CT setting" and the current value to be used as a judgment
value to detect heater disconnections (Reference heater current value  CH Heater disconnection alert
setting (%)) is smaller than 0.01A.
1 FUNCTIONS
1.27 Heater Disconnection Detection Function
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