Pixsys DRR245-21-ABC-T, Руководство пользователя

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42
Lower Deviation Alarm (selection )
On On
Time
Off Off
Alarm
output
Pv
Comand Spv
> 0
Hysteresis
parameter
Alarm Spv
Lower deviation alarm value of
alarm setpoint greater than “0”
and hysteresis value greater
than “0” (Par.28
> 0).
N.B.:
a) The example refers to alarm 1;
the function can also be enabled for
alarm 2
b) With hysteresis less than “0”
(
< 0) the broken line moves
under the alarm setpoint.
On On
Time
Off Off
Comand Spv
Alarm
output
Pv
> 0
Hysteresis
parameter
Alarm Spv
Lower deviation alarm value of
alarm setpoint less than “0”
and hysteresis value greater
than “0” (Par.28
> 0).
N.B.:
a) The example refers to alarm 1;
the function can also be enabled for
alarm 2
b) With hysteresis value less than
“0”
(
< 0) the broken line moves
under the alarm setpoint.