CLS200 Series User’s Guide
Chapter 3: Using CLS200
54
ALARM
Failed Sensor
Alarm Code
Description
03 T/C BREAK
FS 25MAN 0
Figure 3.7
— Failed Sensor Alarm in the Single Loop Display
Alarms that still exist but have been acknowledged are displayed on the Bar Graph display. A letter
or symbol indicates the alarm condition. See
Table 3.3
for a full list of alarm codes, failed sensor
messages and alarm symbols.
ALARM
01 F
08
AAAA MAMA
Open
Low Process
or Low Deviation
on Loop 5
on Loop 1
Thermocouple
Figure 3.8
— Alarm Symbols in the Bar Graph Display
Table 3.3
shows the symbols used in each form of the alarm display.
Table 3.3
—
Alarm Type and Symbols
ALARM
CODE
BAR GRAPH
SYMBOL
ALARM
MESSAGE
DESCRIPTION
FS
F
T/C
BREAK
Failed Sensor:
Break detected in thermocouple circuit.
RO
F
RTD OPEN
RTD Open:
Break detected in RTD circuit.
RS
F
RTD
SHORTED
RTD Short:
Short detected in RTD circuit.
RT
F
REVERSED
TC
Reversed Thermocouple:
Reversed polarity detected in
thermocouple circuit.
ST
F
T/C
SHORTED
Shorted Thermocouple:
Short detected in thermocouple
circuit.
HP
>
No
message
High Process Alarm:
Process variable has risen above the
high alarm set point.
HD
>
No
message
High Deviation Alarm:
Process variable has risen above the
setpoint plus the deviation alarm value.
LP
<
No
message
Low Process Alarm:
Process variable has dropped below
the low alarm set point.
LD
<
No
message
Low Deviation Alarm:
Process variable has dropped below
the setpoint minus the deviation alarm value.
AM
*
No
message
Ambient Warning:
Controller’s ambient temperature has
exceeded operating limits by 5°C.
