Digital Position-Proportional Controllers
E5EZ-PRR
47
• Meaning
• Rectification
Measures
• Operations
with
Errors
There has been an error in the internal memory.
Power off and then restart the unit. If the display remains unchanged, it will be
necessary to change the E5EZ-PRR. If the display is recovered, the root of the
problem may have been that noise from the energy flow was affecting the control
system. Check for any such noise.
Control output and alarm output will be shut off.
• Meaning
• Rectification
Measures
• Operations
with
Errors
Errors appear in potentiometer input. Valve opening has exceeded its regular
range of -10% to 110%.
Check to see if there have been any wiring errors, burnouts, or short-circuits in
the potentiometer.
If there are no problems with the wiring, you can restart the power supply. If the
display remains unchanged, it will be necessary to change the E5EZ-PRR.
If the display, the root of the problem may have been interference, which should
be avoided in the future.
The control output will be determined according to the designated value for error
MV.
Alarm output will operate as normal.
• Meaning
• Rectification
Measures
• Operations
with
Errors
Electro-mechanical calibration was not properly completed.
After confirming the potentiometer and the wiring of the motor driving valve, per-
form electro-mechanical calibration again.
Control output and alarm output are OFF.
-1999
(-199.9)
9999
(999.9)
-1999
(-199.9)
9999
(999.9)
-1999
(-199.9)
9999
(999.9)
-1999
(-199.9)
9999
(999.9)
S. Err indicator
S. Err indicator
S. Err indicator
S. Err indicator
S. Err indicator
S. Err indicator
S. Err indicator
Display range
Input indicator range
Value display
Display range
Input indicator range
Value display
Display
range
Input indicator range
Value display
Display range
Input indicator range
Value display
cccc indicator
cccc indicator
cccc indicator
Memory Errors
e111
----
Potentiometer Input Errors
err
Electro-Mechanical Calibration Error