Simex SLN-94, Руководство пользователя

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User manual - COUNTER SLN-94
6.2. BATCHER FUNCTION
To set SLN-94 for operate as a batcher it must be connected in proper way with valves
and flow sensor, additionally parameter
“mod”
must be set to
“bAt” value
(see description of
”mod” parameter ). Producer assumes that two valves will be used (main valve with bigger
diameter controlled by relay
R2,
and additional valve with small diameter – controlled by relay
R1
). In this mode value showed on adjuster display (left, green display) is equal to threshold of
relay R1 ( Pr1 ), it means required volume of medium, and parameter Pr2 is handled as
constant control advance (defined from Menu level) of the process.
Depending on counting direction there are possible two methods of batcher operation.
First method (while „ dir ”= ”UP” ), the counter counts UP and shows current volume of medium.
After pressing of [RESET] button (and confirmation), counter is zeroed and both relays are
activated (e.g. both valves opened) - the batching process is in progress. In this mode relay
R2
controls main valve will be deactivated when counter reaches value
Pr1
–
Pr2
, (parameter
Pr2
is used as control advance). If Pr2 > Pr1 , then Relay R2 is deactivated after reset (initialisation
of new cycle). Relay R1 will be deactivated when counter reach value stored during the
initialisation (desired volume). The process can be repeated (with old or new parameters - if
changed, even while realisation of previous cycle) after pressing of
[RESET] button, or (if
AUTORESET is active) automatically after delay defined by parameter „
dLy
” (0 to 99.9 sec)
since counter reached previous
Pr1
threshold.
The change of parameters (except „Pr1” ) causes that next cycle must be initialised
by user (even if AUTORESET function is active).
If parameter „ dir ”=„ dn ”, then counter counts down and shows how much of medium left to
end of the cycle. With such settings after pressing of [RESET] button (and confirmation)
counter will be loaded with value showed on adjuster (Left, green LED display) equal to current
Pr1 threshold, and both relays will be activated - batching process is in progress. Relay R2
controls main valve, and will be deactivated when counter reaches value equal to parameter
Pr2
, (
Pr2
is used as control advance). If
Pr2
>
Pr1
then relay
R2
is deactivated after reset
(initialisation of new cycle). Relay
R1
will be deactivated when counter reach 0 (counting
DOWN ). Similar like in first case the process can be repeated after next press of [ RESET ]
button, and (if
AUTORESET
is active) it will be done automatically after delay defined by
parameter „
dLy
”, since counter reached 0.
”dir” parameter State of the counter
after RESET (value)
Deactivation of R1
when counter reaches
Deactivation of R2
when counter reaches
UP 0 Pr1 Pr1-Pr2
dn Pr1 0 Pr2
Tab. 6.1. Table of batcher mode operation
Proposed in example system is showed in Figure 6.1, and proposed circuit diagram in
Figure 6.2.
More details of this example are described on page 33 in example no. 3.
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