Pixsys ATR 142 Series, Руководство пользователя

Страница: 59 / 128

User manual - ATR 142 59
NB : a) The example refers to alarm 1; the function can also be
enabled for alarm 2 on model that include it.
b) With hysteresis less than “0” (
a .1.Hy .
< 0) the segmen-
ted line moves above the alarm setpoint.
Lower Deviation Alarm (
L.d.aL.
selection)
Off Off
On On
Hysteresis
parameter

> 0
Pv
Alarm Spv
Command Spv
Time
Alarm output
Lower deviation alarm value
of alarm setpoint greater
than “0” and hysteresis va-
lue greater than “0” (Par.28
a .1.Hy .
> 0).
NB : a) The example refers to alarm 1; the function can also be
enabled for alarm 2 on model that include it .
b) With hysteresis less than “0” (
a .1.Hy .
< 0) the segmen-
ted line moves under the alarm setpoint.
Off Off
On On
Hysteresis
parameter

> 0
Pv.
Alarm Spv
Command Spv
Time
Alarm output
Lower deviation alarm value
of alarm setpoint less than
“0” and hysteresis value
greater than “0” (Par. 28
a .1.Hy .
> 0).
NB : a) The example refers to alarm 1; function can also be
enabled for alarm 2 on model that include it.
b) With hysteresis value less than “0” (
a .1.Hy .
< 0) the
dotted line moves under alarm setpoint.