24 - ATR227 - User manual
10 Alarm Intervention Modes
Absolute Alarm or Threshold Alarm (a . AL. selection)
1
Alarm Spv
Pv
O
On On
O
Hysteresis
parameter
> 0
Time
Alarm
output
Absolute alarm with controller in
heating functioning (Par. 7
Act.t.
selected
Heat
) and hysteresis value greater than “0”
(Par.29
A.1.HY.
> 0).*
2
Alarm Spv
O
On On
O
Hysteresis
parameter
< 0
Time
Alarm
output
Absolute alarm with controller in heating
functioning
(Par.7
Act.t.
selected
Heat
) and hysteresis
value less than “0” (Par.29
A.1.HY.
< 0).*
3
O
On On
O
Hysteresis
parameter
> 0
Time
Alarm
Absolute alarm with controller in cooling
functioning
(Par.7
Act.t.
selected
ooL
) and hysteresis
greater than “0” (Par.29
A.1.HY.
> 0).*
4
Time
O O
On On
Alarm Spv
Pv
Hysteresis
parameter
< 0
Alarm
output
Absolute alarm with controller in cooling
functioning
(Par.7
Act.t.
selected
ooL
) and hysteresis
value less than “0”(Par.29
A.1.HY.
< 0).*