GEA Grasso - Page 54

Grasso
Refri
g
eration Division
GRASSO SYSTEM CONTROL
Chap. 2 - 18 638660E_chapter2.doc 01.2004/1
The high suction pressure alarm function is illustrated in the following diagram.
P
suc
Suction pressure
A.. Time characteristic of the suction
pressure
W.. Warning limit
Al.. Alarm limit
ML W.. Warning active
ML A.. Alarm active
3.. Reset of the active alarm
Figure 2.22, High suction pressure alarm
Suction press 
Psuc hi alm n1 
Psuc hi alm n2 
Suction press: Actual suction pressure in bar (a)
Psuc hi alm n1: Alarm limit for maximum suction pressure in bar (a) for
low motor speed
<< Limit values 01 >> Psuc hi alm n2: Alarm limit for maximum suction pressure in bar (a) for
high motor speed
Suction press 
Psuc hi alarm 
High warning - 
Suction press: Actual suction pressure in bar (a)
Psuc hi alarm: Actual alarm limit for high suction pressure in bar (a) —
motor speed dependent!
<< Limit values 01 >> High warning: Enter the warning value as an offset to the alarm limit in
bar