User manual for universal counter with batching function SLIK-73
6.4.
CONTROL OF THE RELAY OUTPUTS
The control of the object (measured signal) is realized via relay outputs. Front panel LEDs
named „
R
” indicates the state of particular relay output.
Modes of the control can be changed depend on the values of parameters
“SEtP”
,
“timE”
,
“unit”
and
“modE”
(additional number defines particular relay).
Figure 6.5 presents the principle of relay outputs operation for example values of
parameters.
Description:
A, B, C, D, E, F, G
- time points where result exceeds thresholds value,
t
A
, t
C
, t
E
, t
G
- time while counter keeps result at least equal to threshold value
t
X
- time between subsequent exceeds of threshold value (shorter than value of
“timE”
parameter )
t
Z
- delay of relay reaction
Figure 6.5. Principle of relay outputs operation
Parameter
“SEtP”
defines
threshold
of relay
(trace: a)
. While normal operation of
counter, relay output can change its state to
active
only if
counter value reaches (or exceeds)
the
threshold
(for „up” counting
points A, C, E, G )
. The
active
state of the relay (closed or
open) is defined by parameter
“modE”
. Relay R1 reacts to counter value changes
immediately. Other relays (if available) need that counter value be same or greater than
particular
threshold
during at least 20 ms, to change the relay state.
19
“SEtP”
parameter
(threshold value)
current
counter
value
displayed result
time
time
A
B
C
D
relay state
(
modE
=
on
timE
= 0)
relay state
(
modE
=
on
timE
> 0)
t
A
t
E
t
G
relay state
(
modE
=
oFF
timE
= 0)
relay state
(
modE
=
oFF
timE
> 0)
time
time
closed
open
a)
b)
c)
d)
e)
open
closed
open
open
closed
closed
“timE”
E
F
G
t
Z
t
C
“timE”
“timE”
t
X
time
“timE”
“timE”
“timE”
t
X
