Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 60)

<8. Maintenance>
8-9
IM 01C50E01-01EN
Integral
indicator
Factory
NAMUR
category
Bit
Diagnostic
Status
Diagnostic
Status Detail
Cause
Release/
recovery
conditions
(except
restart)
Output
Operation
Action
AL.20
LOWBAT
*3
M
Bit
19
Power is low:
maintenance
need mid-term
LOWBAT
Low remaining
battery voltage
None Normal action
Replace the
batteries.
Bit
20
*4
Power is
critical low:
maintenance
need short -
term
CRITICAL
LOWBAT
Low remaining
battery voltage
None Normal action
Replace the
batteries.
Bit
20
*5
Power is
critical low:
maintenance
need short -
term
LOWBAT
FOR
DEEPSLEEP
Low remaining
battery voltage
causes switching
to deep-sleep
mode.
None
Normal action,
but power
turns off
15 minutes
after alarm is
generated.
Replace the
batteries.
AL.23
FIRM.C
M
Bit
21
Fault
prediction:
Maintenance
required
FIRMWARE
CONDITION
CHECK
Firmware internal
error
None Normal action Restart.
AL.40
S1.OVR
O
Bit
22
Environmental
conditions
out of device
specification
SENSOR1
TEMP HI
The temperature
of sensor 1 is
higher than the
temperature
specified in the
Sensor Range
parameter.
Recovers
when the
temperature
falls within
the range.
Normal action
Check the
sensor type
setting and
connection
method.
SENSOR1
TEMP LO
The temperature
of sensor 1 is
lower than the
temperature
specified in the
Sensor Range
parameter.
Recovers
when the
temperature
rises within
the range.
Normal action
Check the
sensor type
setting and
connection
method.
AL.41
S2.OVR
*4
SENSOR2
TEMP HI
The temperature
of sensor 2 is
higher than the
temperature
specified in the
Sensor Range
parameter.
Recovers
when the
temperature
falls within
the range.
Normal action
Check the
sensor type
setting and
connection
method.
SENSOR2
TEMP LO
The temperature
of sensor 2 is
lower than the
temperature
specified in the
Sensor Range
parameter.
Recovers
when the
temperature
falls within
the range.
Normal action
Check the
sensor type
setting and
connection
method.
AL.45
AMB.
OVR
O
Bit
22
Environmental
conditions
out of device
specification
AMB TEMP
HI The ambient
temperature
is higher than
+85°C.
Recovers
when the
temperature
falls below
+85°C.
Normal action
Check the
temperature
in the
vicinity
of the
transmitter.
AMB TEMP
LO
The ambient
temperature is
lower than -40°C.
Recovers
when the
temperature
rises above
-40°C.
Normal action
Check the
temperature
in the
vicinity
of the
transmitter.