Yokogawa EJX440A - Manual (Page 30)

IM 01C25T03-01E 4-1
4. SELF-DIAGNOSTICS
4. SELF-DIAGNOSTICS
4.1 Checking for Problems
4.1.1 Identifying Problems with BT200
The following four areas can be checked.
(a) Whether connections are good.
(b) Whether BT200 was properly operated.
(c) Whether settings were properly entered.
(d) History of the errors.
See examples below.
• Example 1: Connection errors
ESC
communication error
Press the key.
When the panel shown on the left
appears, press the key.
Since communications will be
unsuccessful if there is a problem
in the connection to the BT200, the
display at the left will appear.
Recheck the connection.
Press the (OK) key.
––WELCOME––
BRAIN TERMINAL
ID: BT200
check connection
push ENTER key
UTIL FEED
• Example 2: Setting entry errors
F0401.EPS
The initial data panel shows the
result of current transmitter
diagnostics.
DATA DIAG PRNT ESC
PARAM
C20:PRES UNIT
kPa
C21:PRES LRV
600 kPa
C22:PRES URV
600 kPa
FEED PRNT ESC
DIAG
C60:SELF CHECK
ERROR
< ERROR >
< ILLEGAL LRV >
Press the (DIAG) key in the
parameter panel to go to the
diagnostics panel
(C60: SELF CHECK).
An error message is displayed
when an error occurs in the
diagnostics panel.
OK
PARAM
01:MODEL
EJX110 M
02:TAG NO.
YOKOGAWA
03:SELF CHECK
ERROR
• Example 3: Checking the history of the errors
Connect the BT200 to the
transmitter, and call item “P.”
The history of up to four errors can be stored. When the 5th
error has occurred, it is stored in “P10.” The error stored in
“P16” will be deleted, and then, the error in “P14” will be
copied to “P16.” In this sequence, the history of the most
previously occurred error will be removed from memory.
“GOOD” will be displayed if there was no previous error.
F0402.EPS
HOME SET ADJ ESC
MENU
J:ADJUST
K:TEST
L:CALIBRATION
M:MEMO
P:RECORD
T:CHARACTERIZR
DATA DIAG PRNT ESC
PARAM
P10:ERROR REC 1
ERROR
P12:ERROR REC 2
ERROR
P14:ERROR REC 3
GOOD
For the details of the messages, see Table 4.5.1 Alarm
Message Summary.
ESC
SET
P10:ERROR REC 1
ERROR
< ERROR >
<50:P ILLEG LRV >
<(a) SETUP PANEL>
Note 1: Press the key twice in the setup panel
(a) to clear all error message (P10 to P16)
information.
Note 2: When the error occurs, the self-diagnostic detects
errors and records them in two ways depending on
the types of errors. The amplifier/capsule failures are
recorded immediately after the occurrence, while
the minor errors such as warnings of inappropriate
parameter settings are periodically recorded at an
interval of minimum five minutes to twenty four hours.
Note that the interval extends as the number of
access counts to EEPROM increases.
P10: “ERROR REC 1” displays the last error.
P12: “ERROR REC 2” displays the error one time before
the last error occurred.
P14: “ERROR REC 3” displays the error two times before
the last error occurred.
P16: “ERROR REC 4” displays the error three times before
the last error occurred.
Select P10: ERROR REC1 and
press the key to display
the error message.