179
Error Displays Section 8-8
8-8 Error Displays
When an error has occurred, the E5ZN-SDL Setting Display Unit indicates the
error code. This section describes how to check error codes on the display,
and the actions you must take to remedy the problem.
8-8-1 Input Error (s.err)
Meaning The input value has exceeded the control range.
Control Range
Platinum resistance thermometer, thermocouple input:
Temperature setting lower limit
−20°C to temperature setting upper limit 20°C
(temperature setting lower limit
−40°F to temperature setting upper limit 40°F)
ES1A input:
Same as input indication range
Analog input:
−5% to 105% of scaling range
Action Check the wiring of inputs for mistakes in wiring, disconnections, short-cir-
cuits, and the input type.
If no abnormality is found in the wiring and input type, turn the power OFF
then back ON again. If the display remains the same, the E5ZN must be
repaired. If the display is restored, then a probable cause can be electrical
noise affecting the control system. Check for electrical noise.
Operation at Error After the error occurs, the error is displayed, and control output functions turn
OFF.
Alarm outputs function as if the upper limit has been exceeded.
An error message is displayed when “PV” or “PV/SP” is displayed.
8-8-2 Display Range Over (<<<<,>>>>)
Meaning Although this is not an error, this is displayed when the PV exceeds the dis-
play range when the control range is larger than the display range (
−1999
(
−199.9) to 9999 (999.9)).
• When less than “−1999” (−199.9)<<<<
• When larger than “9999” (999.9) >>>>
Action Control continues, allowing normal operation. An error message is displayed
when “PV” or “PV/SP” is displayed.
8-8-3 Memory Error (e111)
Meaning Internal memory operation for the E5ZN-SDL Setting Display Unit is in error.
Action First, turn the power OFF then back ON again. If the display remains the
same, the E5ZN must be replaced. If the display is restored, then a probable
cause can be electrical noise affecting the control system. Check for electrical
noise.
Operation at Error Key operations are not possible.
To Next Page
Loading...
