BEKA BA577E, Руководство пользователя

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6.2 Controlling a solenoid valve
The BA577E Timer is required to open a solenoid
valve for 5 minutes when an external contact is
closed. 55 minutes after the valve is closed it is to
be opened again for another 5 minute period. This
process is to be repeated 10 times after which the
Timer is to automatically reset so that is ready to
start the next 10 cycles when the external contact is
closed.
In this example control output 2 has been wired to
the timer reset terminals and configured with a five
seconds control output delay after the solenoid valve
has closed for the tenth time.
Therefore five
seconds after the tenth cycle has been completed
the system automatically resets and is ready for the
next timing cycle to be initiated.
The lower display is required to show timer status at
the start of each period.
After a power interruption the timer is required to
resume operation from the point at which it stopped
when the start button is operated.
Fig 11 Control of a solenioid valve
The required instrument configuration for this
example are shown below.
Function Display Setting
Access code
CodE 0000
Function
FunCtion ELAP5E
Input
inP . type ContACt
debounce
dEbounCE dEFAuLt
Display 2
di5P-2 5td
Start stop
5tAr5toP ControL 2
Units
unit5 12 : 00
Set time
5Et t 00 : 05
Timer repeat cycle
CYCLE5
Cycle function enable
EnbL on
Cycle count
cycl cnt 10
Reset delay
r5t dela 00 : 55
Access set time from
AC5Et - t oFF
display mode.
Direction of count
uP or dn uP
Power failure
p-fail pau5e
Local total reset
rE5Et . EnbL on
Local grand total reset
CLr Gtot oFF
Enable control output 1
EnbL on
Control output 1 on at
oP1 on run
Control output 1 off at
oP1 oFF n run
Control output 1 delay
oP1 dELA 00000
Enable control output 2
EnbL on
Control output 2 on at
oP2 on done
Control output 2 off at
oP2 oFF re5et
Control output 2 delay
oP2 dELA 00005
7
In this example local total reset
rE5Et . EnbL
is
on
.
This enables the Timer to be reset when power is
first connected by operating the
*
and
&
down
button simultaneously for more than 3 seconds.