GEA Grasso - Page 51

Grasso
Refri
g
eration Division
GRASSO SYSTEM CONTROL
01.2004/1 638660E_chapter2.doc Chap. 2 - 15
Imot hi alarm 
High limit - 
Decr factor  %
Imot hi alarm: Alarm limit for maximum current in A
High limit: Begin of the motor current limitation -
enter value as an offset to the alarm limit in A
<< Limit values 01 >> Decr factor: Value used for calculation of the begin of the forced
capacity reduction - Value range 0 — 100 %
2.7.2.4 High motor current alarm
I
mot
Motor current
A.. Time characteristic of the motor
current:
1 = actual value
2 = calculated value for the next
capacity step
B.. Motor current limitation active
V.. Forced reduction of capacity due
too high motor current
b.. Limit value for disabling capacity
increase (calculated motor
current 2) and for forced
reduction of capacity (actual
motor current 1)
W.. Warning limit
Al.. Alarm limit
ML W.. Warning active
ML A.. Alarm active
3.. Reset of the active alarm
Figure 2.19, High motor current alarm
Motor current 
Imot hi alarm 
High warning - 
Motor current: Actual motor current in A
Imot hi alarm: Alarm limit for maximum motor current in A
High warning: Enter the warning value as an offset to the alarm limit in
A
<< Limit values 01 >>