Alarms; Generic Alarms Al2-4 - gefran 650 L Installation And Instruction Manual

5. EXAMPLES AND APPLICATION NOTES
5.3.

Alarms

5.3.1.

Generic alarms AL2-4

Note: AL1 is latched and only used for high limit control. Reset is required
Normal absolute alarm
AL3
AL2
(*)
Alarm 2
Alarm 3
For AL2 inverse absolute alarm (min.) with positive H2, A2 t = 1
(*) = OFF if disabling on power-on exists
For AL3 direct absolute alarm (max) with negative H3, A3 t = 0
Normal deviation alarm
(AL2 absolute, AL3 relative)
AL2 + AL3
AL2
Alarm 2
Alarm 3
For AL2 direct absolute alarm (max) with negative H2, A2 t = 0
For AL3 direct relative alarm (max) with negative H3, A3 t = 2
AL3+H3
AL2+H2
time
AL2 + AL3 + H3 AL2 + AL3
AL2+H2
AL2 + AL3
time
80224_MHW_650 L - 1250 L_07-2018_ENG - 74
Symmetrical absolute alarm
AL2
inverse
direct
For AL2 inverse absolute, symmetrical alarm with hysteresis H2, A2 t = 5
For AL2 direct absolute, symmetrical alarm with hysteresis H2, A2 t = 4
Symmetrical deviation alarm
(AL2 absolute, AL3 relative)
AL2
Alarm 1
Alarm 2
For AL2 direct absolute alarm (max) with negative H2, A2 t = 0
For AL3 symmetrical deviation alarm H3, A3 t = 6
AL2 +[H2]
AL2 - [H2]
time
AL2 + AL3 + H3
AL2+H2
time