Pixsys ATR142 - Page 43

43
Lower Deviation Alarm (
selection
)
On
On
Time
Off Off
Alarm
output
Pv
Comand Spv
> 0
Hysteresis
parameter
Alarm Spv
Lower deviation alarm value of
alarm setpoint greater than “0”
and hysteresis value greater
than “0” (Par.28 > 0).
N.B.:
a) The example refers to alarm 1;
the function can also be enabled for
alarms 2 and 3 on models that
include it.
b) With hysteresis less than “0”
( < 0) the broken line moves
under the alarm setpoint.
On
On
Time
Off Off
Comand Spv
Alarm
output
Pv
> 0
Hysteresis
parameter
Alarm Spv
Lower deviation alarm value of
alarm setpoint less than “0”
and hysteresis value greater
than “0” (Par.28 > 0).
N.B.:
a) The example refers to alarm 1;
the function can also be enabled for
alarms 2 and 3 on models that
include it
b) With hysteresis value less than
“0”
( < 0) the broken line moves
under the alarm setpoint.