Simex SRD-99, Руководство пользователя

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User manual - DATA RECORDER SRD-99 and cooperating software
6.3.2. Outputs control
Device outputs are controlled by logic function of channels alarms. There are two logic
functions: OR – closes (or opens, if output channel mode is set to N.C.) the relay when any of
attached channels is in alarm state, AND - closes (or opens, if output channel mode is set to
“
N.C. ”) when all of attached channels are in alarm state.
A particular channel is in alarm state when condition selected in ”
Outputs settings:
Source
” is met. For example when ” alarm 2 ” option is selected for channel 1 the channel 1 will
be in alarm state
if and only if
alarm 2 will be present, state of alarm 1 does not mater in this
case. If option „ alarm 1 and 2 ” is selected, channel will be in alarm state if and only if alarm 1
and alarm 2 will be present in the same time.
” Mode ” parameter describes output mode. If ” N.O. ” is selected then relay will be closed
when logic function is
1
, and open in the other case. If ” N.C. ” is selected then relay will be
open when logic function is
1
and closed in the other case.
Fig. 6.28 shows example reading fallowed by rely state. Rely state can be changed only
when times (t
A
,t
B
,t
C
,t
D
) are greater than delays times. If those delays times are set to ” 0 ” the
switch state is taken as soon as condition appears. If those delay parameters are set to value
greater than ”
0 ” relay switch state is taken (point B
ON
, D
ON
, chart: a, d, e) when delay time is
elapsed.
Caption:
A, B, C, D, E –
signal border crossing points.
B
ON
,
B
OFF
,
C
ON
,
C
OFF
,
E
ON
,
E
OFF –
relay switch state moments for chart d and e
t
A
,
t
B
,
t
C
,
t
D
,
t
E –
times when displayed values are in measurement zones Over and Under threshold
Fig. 6.28. Relay controlled by one alarm ” Over threshold ” mode
(” Closed hold time and ” Open hold time ” set to 0 ).
34
” Threshold ”
parameter
”Hysteresis”
parameter
Signal
Reading
time
A B
C
D
Output state
mode = N.O.
Close delay = 0
Open delay = 0
t
A
t
B
t
C
t
D
B
ON
D
OFF
Open delay
Close delay
B
OFF
D
ON
a)
b)
c)
d)
e)
Over
threshold
closed
open
Under
threshold
Logic
function
Close delay
Open delay
time
time
time
Output state
mode = N.C.
Close delay = 0
Open delay = 0
Output state
mode = N.O.
Close delay > 0
Open delay > 0
Output state
mode = N.C.
Close delay > 0
Open delay > 0
closed
closed
closed
open
open
open
time