Pixsys ATR224, User Manual, Page: 31 / 37

User manual - ATR224 - DRR224 - 31
12.e
Band alarm (par. 123
AL.1.F.
=
band
)
Command Spv
Time
Hysteresis parameter

> 0
Hysteresis parameter
 > 0
Pv
Alarm Spv
Alarm Spv
Alarm output
ON
OFF OFF OFF
ON ON
Band alarm hysteresis value greater than “0” (Par. 128
a.1.HY
> 0).
Command Spv
Time
Hysteresis parameter
 < 0
Pv
Alarm Spv
Alarm Spv
Alarm output
ON
OFF OFF OFF
ON ON
Hysteresis parameter

< 0
Band alarm hysteresis value lower than “0” (Par. 128
a.1.HY
< 0).
12.f Asymmetric band alarm (par. 123
AL.1.F.
=
A.band
)
Command Spv
Time
Hysteresis parameter
 > 0
Pv
Alarm Spv H
Alarm Spv L
Alarm output
ON
OFF OFF OFF
ON ON
Hysteresis parameter
 > 0
Asymmetric band alarm with hysteresis value greater than “0” (Par.
128
a.1.HY
> 0).
Command Spv
Time
Hysteresis parameter
 < 0
Pv
Alarm Spv H
Alarm Spv L
Alarm output
ON
OFF OFF OFF
ON ON
Hysteresis parameter

< 0
Asymmetric band alarm with hysteresis value lower than “0” (Par. 128
a.1.HY
< 0).
12.g Upper deviation alarm (par. 123
AL.1.F.
=
up.dev.
)
Command Spv
Time
Hysteresis parameter

> 0
Pv
Alarm Spv
Alarm output
OFF OFF
ON ON
Upper deviation alarm value of alarm setpoint greater than “0” and
hysteresis value greater than “0” (Par.128
A.1.HY.
> 0).
NB : with hysteresis value less than “0” (
A.1.HY.
< 0) the dotted line
moves under the alarm setpoint.
Command Spv
Time
Hysteresis parameter

> 0
Pv
Alarm Spv
Alarm output
OFF OFF
ON ON
Upper deviation alarm value of alarm setpoint less than “0” and
hysteresis value greater than “0” (Par.128
A.1.HY.
> 0).
NB : with hysteresis value less than “0” (
A.1.HY.
< 0) the dotted line
moves under the alarm setpoint.