YOKOGAWA YTA320 User Manual

IM 01C50B01-01E
6-5
6. MAINTENANCE
Table 6.3 Problems, Causes and Countermeasures
Related Parameter
Observed Problems Possible Cause Countermeasure
F10:LRV
F20:URV
J05:SNSR1 CLR
K05:SNSR2 CLR
L05:OUT CLR
G10:OUTPUT MODE
J05:SNSR1 CLR
K05:SNSR2 CLR
L05:OUT CLR
F10:LRV
F20:URV
H10:REVERSE OUT
H40:WRITE PROTCT
B10:PV is
B20:SV is
D10:SENSOR1 TYPE
E10:SENSOR2 TYPE
F40:BURN OUT
H20:SNSR BACKUP
B12:PV DAMPING
B13:DMP POINT
Check the range, and change the
settings to make the span larger.
Clear the user adjustment (Sensor
trim) value or set it to off.
Clear the user adjustment (output
trim) value or set it to off.
Release manual mode. (Make the
transmitter return to Automatic
Mode)
Clear the user adjustment (Sensor
trim) value or set it to off.
Clear the user adjustment (output
trim) value or set it to off.
Set the correct value to URV and
LRV.
Set the transmitter to normal
output mode.
Release write protect.
Set Sensor1 as PV and Sensor2
as SV.
• Check the type and wire
settings for Sensor1 and
Sensor2.
• Check the connection of
Sensor1 and Sensor2.
Check the Sensor Burnout setting.
Change the Sensor Backup
function to “enable.”
Set correct value.
If output fluctuation is great, set a
greater value for PV damping
point than current setting. (Initial
setting is “2%” of output)
Span is too narrow.
Input adjustment by user was
not corrctly done.
Output adjustment by user
was not correctly done.
The transmitter is in manual
(test output) mode.
Input adjustment by user was
not corrctly done.
Output adjustment by user
was not correctly done.
LRV is greater than URV.
The transmitter is set to
reversed output mode.
The transmitter is in write
protect status.
Settings of Process Variables
are not correct.
Configuration of Sensor1 and
Sensor2 is not correct.
Sensor Burnout is set to “off.”
Sensor backup mode is not
enabled.
Damping time constant is set
to “0 second.”
Setting for “PV damping point”
is too small.
Output fluctuates
greatly.
Transmitter outputs
fixed current.
Output is reversed.
(See note 1)
Parameters cannot
be changed.
Sensor backup
function doesn’t work
correctly.
Output damping
doesn’t work.
T0603.EPS
PV LRV (4)
PV URV (5)
Snsr1 Trim Act (123312)
Snsr2 Trim Act (123322)
D/A Clr to Default
(12343)
Loop test (122)
Snsr1 Trim Act (123312)
Snsr2 Trim Act (123322)
D/A Clr to Default
(12343)
PV LRV (4)
PV URV (5)
Chng wrt Protect
(Hot key)
PV is (11211)
SV is (11212)
Snsr1 config (134)
Snsr2 config (135)
Sensor barnout (14315)
Snsr backup (14141)
PV damp (1322)
PV damp point (1323)
(HART protocol)(BRAIN protocol)
Note 1: If the reversed output is desired and necessary setting was done by user, it is not considered as a problem.

YOKOGAWA YTA320 Specifications

General

Brand	YOKOGAWA
Model	YTA320
Category	Transmitter
Language	English