User manual

50 - UR4848 - User manual UR4848 - User manual - 51
11 Alarm Intervention Modes
Absolute Alarm or Threshold Alarm ( a. AL. selection)
Alarm Spv
Pv
O
On On
O
Hysteresis
parameter
 > 0
Time
Alarm
output
Absolute alarm with controller in
heating functioning (par. 11
Act.t.
selected
Heat ) and hysteresis value
greater than “0” (par. 28
A.1.HY. > 0).
NB
13
Alarm Spv
Pv
O
On On
O
Hysteresis
parameter
 < 0
Time
Alarm
output
Absolute alarm with controller in he-
ating functioning (par. 11
Act.t. se-
lected
Heat ) and hysteresis value less
than “0” (par. 28
A.1.HY. < 0).
NB
13
Alarm Spv
Pv
O
On On
O
Hysteresis
parameter
 > 0
Time
Alarm
output
Absolute alarm with controller in co-
oling functioning (par. 11
Act.t. se-
lected
CooL ) and hysteresis value
than “0” (par. 28
A.1.HY. > 0).
NB
13
Time
O O
On On
Alarm Spv
Pv
Hysteresis
parameter
 < 0
Alarm
output
Absolute alarm with controller in co-
oling functioning
(par. 11
Act.t. selected CooL ) and hy-
steresis value less than “0” (par. 28
A.1.HY. < 0).
NB
13
Absolute Alarm or Threshold Alarm Referring to
Setpoint Command (
a.c.AL. selection)
O
On
O
Time
Alarm Spv
Hysteresis
parameter
 > 0
Alarm
output
Comand Spv
Absolute alarm refers to the com-
mand set, with the controller in hea-
ting functioning (par. 11
Act.t. se-
lected
Heat ) and hysteresis value
greater than “0” (par. 28
A.1.HY. > 0).
The command set can be changed
by pressing the arrow keys on front
panel or using serial port RS485 com-
mands.
NB
13
Band Alarm ( b. AL. selection)
Comand Spv
Pv
Alarm Spv
O O O
On On On
Hysteresis
parameter
 > 0
Time
Alarm
output
Band alarm hysteresis value greater
than “0” (par. 28
A.1.HY. > 0).
NB
13