30 - ATR224 - DRR224 - User manual
12 Alarm Intervention Modes
12.a Absolute or threshold alarm active over (par. 123
A L .1 . F.
=
A b . u P. A.
)
Time
Hysteresis parameter
> 0
OFF OFF
ON ON
Alarm Spv
Pv
Absolute alarm active over.
Hysteresis value greater than “0” (Par. 128
a .1 . H Y > 0).
Time
Hysteresis parameter
< 0
Alarm output
OFF OFF
ON ON
Alarm Spv
Pv
Absolute alarm active over.
Hysteresis value lower than “0” (Par. 128
a .1 . H Y < 0).
12.b Absolute or threshold alarm active below (par. 123
A L .1 . F.
=
A b . u P. A.
)
Time
Hysteresis parameter
> 0
OFF OFF
ON
ON
Alarm Spv
Pv
Absolute alarm active below.
Hysteresis value greater than “0” (Par. 128
a .1 . H Y > 0).
Time
Hysteresis parameter
< 0
OFF OFF
ON
ON
Alarm Spv
Pv
Absolute alarm active below.
Hysteresis value lower than “0” (Par. 128
a .1 . H Y < 0).
12.c Absolute or threshold alarm referred to command setpoint active over (par. 123
A L .1 . F.
=
Ab . c. u .A.
)
Time
Hysteresis parameter
> 0
Command Spv
Alarm output
OFF OFF
ON
Alarm Spv
Absolute alarm referred to command setpoint active over. Hysteresis
value greater than “0” (Par. 128
a .1 . H Y > 0).
12.d Absolute or threshold alarm referred to command setpoint active below (par. 123
A L .1 . F.
=
Ab . c.L.A.
)
Time
Hysteresis parameter
> 0
OFF OFF
ON
Alarm Spv
Absolute alarm referred to command setpoint active below.
Hysteresis value greater than “0” (Par. 128
a .1 . H Y > 0).