Yokogawa Data Acquisition with PID Control CX2000 User Manual
Page 259
9-26
IM 04L31A01-17E
(Continuing from the previous page)
Alarm Type
1-Character Indication 3-Character Indication
Deviation high-limit alarm (energize/hold)
D
DVH
Deviation low-limit alarm (energize/hold)
d
DVL
Deviation high-limit alarm (deenergize/hold)
D
DVH
Deviation low-limit alarm (deenergize/hold)
d
DVL
Deviation high & low limit alarm (energize/hold)
I
DVO
Deviation within high & low limits alarm (energize/hold)
i
DVI
PV high-limit alarm (deenergize/hold)
H
PVH
PV low-limit alarm (deenergize/hold)
L
PVL
Timer, upward detection, hours & minutes
E
ETC
Timer, downward detection, hours & minutes
E
ETC
Timer, upward detection, minutes & seconds
E
ETC
Timer, downward detection, minutes & seconds
E
ETC
Sensor grounding alarm
E
ETC
Self diagnosis output
E
ETC
FAIL output
E
ETC
Heater burnout alarm 1
E
ETC
Heater burnout alarm 2
E
ETC
SP high-limit
H
SPH
SP low-limit
L
SP
Output high-limit
H
OTH
Output low-limit
L
OTL
Others
E
ETC
Error Messages during Display and Operation
The following table shows the error messages that may appear when you select to
display or operate the external loops on the control group display or the tuning display
of the operation display.
Display/Operation Conditions in Which Display/Operation Error Message
Corrective Action
Cannot Be Performed
(Condition That Lead to Errors)
Mode
None. Always possible.
–
–
Remote(REM)/
None. Always possible.
–
–
Local(LOC)
RUN/STOP
None. Always possible.
–
–
SP
During auto tuning
Can not operate in
Stop auto tuning.
the present situation.
When remote/local is “remote”
Can not operate in
Set remote/local
the present situation. to “local.”
When the secondary loop of cascade
Can not operate in
Set the mode to
control is “CAS”
the present situation. “AUT” or “MAN.”
OUT
When RUN/STOP is “STOP”
Can not operate in
Set RUN/STOP
the present situation. to “RUN.”
When the mode is other than “MAN”
Can not operate in
Set the mode to
the present situation. “MAN.”
AT (auto tuning)
None. Always possible.
–
–
(AUTO TUN)
SPNO
None. Always possible.
–
–
GROUPNO
None. Always possible.
–
–
9.9 Operations That You Can Carry Out during Control Operation