User manual

UR3274U - User manual 53
O
On On
O
Hysteresis
parameter
 > 0
Alarm Spv
Pv
Time
Alarm output
Absolute alarm with con-
troller in cooling functio-
ning
(Par.11
act.t. selected cooL )
and hysteresis value greater
than “0” (Par.28
a .1 . H y . > 0).
O
On On
O
Hysteresis
parameter
 < 0
Alarm Spv
Pv
Time
Alarm output
Absolute alarm with con-
troller in cooling functio-
ning (Par.11
act.t. selected
cooL ) and hysteresis value
less than “0” (Par.28
a .1 . H y . >
0).
NB: The example refers to alarm 1; the function can also be
enabled for alarm 2 on model that include it.
Absolute Alarm or Threshold Alarm Referring to Setpoint
Command (
a.c.aL. selection)
O
On
Hysteresis
parameter
 > 0
O
Alarm Spv
Command Spv
Time
Alarm output
Absolute alarm refers to the
command set, with the con-
troller in heating functio-
ning (Par.11
act.t. selected
Heat ) and hysteresis value
greater than “0” (Par.28
a .1 . H y . > 0).
The command set can be changed by pressing the arrow keys
on front panel or using serial port RS485 commands.