Watlow CLS200 - Figure 3.7 - Failed Sensor Alarm in the Single Loop Display; Figure 3.8 - Alarm Symbols in the Bar Graph Display; Table 3.3 - Alarm Type and Symbols

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.