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Alarms 
P210, 220, 230 =1 (Alarm) 
The second parameter for each relay determines the function of the alarm.  
P211, P221, P231 - Relay Function 
This parameter defines what function the alarm will respond to as follows. 
Alarm is based on the level in the vessel, and the 
type of level alarm (P212, 222, 232) and two 
setpoints must be set (P213, 223, 233 & P214, 224, 
234). Setpoints are entered in Display Units or % 
of span as referenced to Empty Level*.  
Alarm is based on the rate of change of level in the 
vessel, and the type of rate of change alarm (P212, 
222, 232) and two setpoints must be set (P213, 
223, 233 & P214, 224, 234). Setpoints are entered 
in Display Units per minute or % of span per 
minute and a negative value should be entered for a 
Rate Alarm on a de-creasing level, and a positive 
value for an increasing level.  
 
Alarm is based on the temperature, and the type of 
temperature alarm (P212, 222, 232) and two 
setpoints must be set (P213, 223, 233 & P214, 224, 
234). The temperature used depends on the 
temperature source selected (P852). Setpoints are 
entered in 
o
C. 
Alarm is raised if the Failsafe Timer (P809) 
expires. No setpoints are required.  
Alarm  is  raised  if  the  real-time  clock  fails.  No 
setpoints are required.  
 
Note  that  the  loss  of  echo  and  loss  of  clock  will  also  be  shown  on  the 
display as “LOST ECHO” and “LOST CLOCK” respectively.