
User manual - ATR227 -
21
Upper Deviation Alarm (
+GD/
selection)
1
Comand Spv
Alarm Spv
Off
Off
On
On
Hysteresis
parameter
$+<
> 0
Time
Alarm
output
p
p
Upper deviation alarm value of alarm
setpoint greater than “0” and hysteresis
value greater than “0” (Par.29
$+<
> 0).**
2
Comand Spv
Alarm Spv
Off
Off
On
On
Hysteresis
parameter
$+<
> 0
Time
Alarm
output
p
p
Upper deviation alarm value of alarm
setpoint less than “0” and hysteresis
value greater than “0” (Par.29
$+<
> 0).**
Lower Deviation Alarm (
/GD/
selection)
1
Pv
Comand Spv
Alarm Spv
Off
Off
Hysteresis
parameter
$+<
> 0
Time
Alarm
output
p
Lower deviation alarm value of alarm
setpoint greater than “0” and hysteresis
value greater than “0” (Par.29
$+<
> 0).**
2
Pv
Comand Spv
Alarm Spv
Off
Off
Hysteresis
parameter
$+<
> 0
Time
Alarm
output
p
p
Lower deviation alarm value of alarm
setpoint less than “0” and hysteresis
value greater than “0” (Par.29
$+<
> 0).**
** a) The example refers to alarm 1; the function can also be enabled for alarm 2 .b) With hysteresis value less
than “0” (
$+<
< 0) the dotted line moves over the alarm setpoint.