Wachendorff ur3274, Руководство пользователя, Страница: 122 / 128

122 UR3274U - User manual
Off Off
Hysteresis
parameter

> 0
Pv
Alarm Spv
Command Spv
Time
Alarm output
Upper deviation alarm
value of alarm setpoint
less than “0” and hysteresis
value greater than “0”
(Parameter 28
a.1.Hy.
>
0). **
12.e
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 value greater
than “0” (Parameter 28
a.1.Hy.
> 0). **
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”
(Parameter 28
a.1.Hy.
>
0). **
* The example refers to alarm 1; the function can also be enabled for
alarm 2 on model that include it.
** 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 segmented line moves above the alarm setpoint.