Pixsys ATR144 - Lower deviation alarm (par. 62 AL. I.F. = Lo.dEu.)

User manual - ATR144- 83
13.f Lower deviation alarm (par. 62 A L .1 . F. = Lo.dev. )
Command Spv
Time
Hysteresis parameter
 > 0
Pv
Alarm Spv
Alarm output
OFF OFF
ON ON
Lower deviation alarm
value of alarm
setpoint greater than
“0” and hysteresis
value greater than “0”
(Par.64 a .1 . H Y > 0).**
Command Spv
Time
Hysteresis parameter
 > 0
Pv
Alarm Spv
Alarm output
OFF OFF
ON ON
Lower deviation alarm
value of alarm
setpoint less than “0”
and hysteresis
value greater than “0”
(Par. 64 a .1 . H Y > 0).**
** a) The example refers to alarm 1; the function can also be enabled for
alarm 2 on model that include it. b) With hysteresis less than “0” (
a .1 . H y .
< 0) the segmented line moves above the alarm setpoint.