User manual - CONTROLLER PUR-49D
turned off (
“modE”
=
”oFF”
) when input signal value is contained in
zone A
6.12a
).
The parameter
“AL”
allow user to set the relay output behaviour in critical situations
(e. g. input values exceeds
permissible measurement range
)
.
User can select that the
relays will be turned on, turned off,or not changed in critical situations.
All parameters connected with relay outputs are described in paragraph
.
6.3.2.
Two thresholds mode
Objaśnienie:
A, B, C, D, E
- points where measured signal exceeds border values (expected value ± allowed deviation)
B
ON
,
B
OFF
,
C
ON
,
C
OFF
,
E
ON
,
E
OFF
- relays state changes moments: (for
“t on”
> 0,
“toFF”
> 0)
t
A
,
t
B
,
t
C
,
t
D
,
t
E
-
time periods while input signal is in zone A or zone B
Figure 6.13. Principle of LED/relay output operation for two thresholds mode
30
E
OFF
“SEtP”
or
“SEt2”
parameter
“HYSt”
parameter
measure
d signal
displayed value
time
time
time
A
B
C
D
relay state
(
modE
=
in
t on
= 0
toFF
= 0)
relay state
(
modE
=
in
t on
> 0
toFF
> 0)
t
A
t
C
t
D
B
ON
relay state
(
modE
=
out
t on
= 0
toFF
= 0)
relay state
(
modE
=
out
t on
> 0
toFF
> 0)
“toFF”
parameter
“t on”
parameter
B
OFF
E
ON
time
time
closed
open
a)
b)
c)
d)
e)
open
closed
open
open
closed
closed
“t on”
parameter
“toFF”
parameter
zone A
zone B
“HYSt”
parameter
zone B
C
OFF
C
ON
E
“t on”
parameter
“toFF”
parameter
t
B
t
E
