BEKA BA354NE, Руководство пользователя

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e.g. An Rate Totaliser with a high alarm set at 9000
and an alarm delay of 30 seconds will perform as
follows:
The alarm annunciator will start to flash when an
increasing rate display equals 9000, but the alarm
output will not be activated until the alarm condition
has existed continuously for 30 seconds. When the
alarm output is activated, the alarm annunciator will
stop flashing and become permanently activated.
If the ‘FL5H’ function, which flashes the Rate
Totaliser display when an alarm occurs, has been
enabled, it will not start to function until the alarm
output is activated.
See section 10.3.12
10.3.11 Alarm silence time: 5iL
This function is primarily intended for use in small
installations where the alarm output directly operates
an alarm annunciator such as a sounder or beacon.
When the alarm silence time, which is adjustable
between 0 and 3600 seconds in 1 second
increments, is set to any figure other than zero, the
P push-button becomes an alarm accept button.
After an alarm has occurred, operating the P button
will cause the alarm output to revert to the non-alarm
condition for the programmed alarm silence time. If
the alarm condition still exists at the end of the
silence time, the alarm output will be reactivated.
During the silence time the Rate Totaliser alarm
annunciator will flash until the silence time expires or
the alarm is cleared.
If the ‘FL5H’ function, which flashes the Rate
Totaliser display when an alarm occurs has been
enabled, it will only function when the alarm output
is activated, not during the silence time. See
section 10.3.12
To adjust the alarm silence time select '5iL' from the
alarm configuration menu and press
P which will
reveal the existing silence time. The flashing digit of
the silence time can be adjusted using the
▲ and ▼
push buttons, and the P button to move control to
the other digits. When the required silence time has
been entered press
E to return to the alarm menu.
10.3.12 Flash display when alarm occurs ‘FL5H’
In addition to the two alarm annunciators on the
Rate Totaliser display which show the status of both
alarms, this function provides an even more
conspicuous indication that an alarm condition has
occurred.
When enabled, the rate or total display depending
upon which has caused the alarm, alternates
between the numerical value and the alarm
reference, ‘ALr1’ or ‘ALr2’ when the alarm output is
activated. If both alarm outputs are activated by one
variable, the display alternates between the
numerical value and ‘Alr1-2’.
To enable or disable the function select 'FL5H' from
the alarm menu and press
P which will reveal the
current setting. The function can be changed by
pressing the
▲ or ▼ button followed by the E button
to return to the alarm menu.
10.3.13 Access setpoint in display mode:
AC5P
This function enables a separate menu providing
access to the alarm setpoints from the display mode
by simultaneously operating the
P and ▲ push
buttons. An operator can therefore adjust the alarm
setpoints without having access to the Rate Totaliser
configuration menu. Protection against accidental
adjustment of the setpoints when the Rate Totaliser
is in the display mode is provided by a separate
security code.
This direct setpoint access menu is enabled and the
separate security code entered from the 'AC5P'
function in the alarm configuration menu as shown in
Fig 14. To change the menu parameters select
'AC5P' from the configuration menu and press
P
which will display the enable prompt 'EnbL'. Press P
again to reveal if the direct access menu is 'on' or
'oFF'. The
▲ or ▼ button will toggle the display
between the two conditions.
If 'oFF' is selected, the operator will not have access
to the setpoints from the display mode. Return to
the 'AC5P' prompt in the main menu by pressing
E
twice.
If 'on' is selected, the operator will have direct
access to the alarm setpoints from the display mode
via a separate optional security code. To define this
four digit security code press
P to return to the 'Enbl'
prompt followed by the ▲ or ▼ button to select the
access code prompt 'ACCd'. Pressing P will reveal
the current security code. Each digit of the code
may be changed by operating the
▲ and ▼ push
buttons, and the P button to move control to the next
digit. When the required code has been entered,
press
E twice to return to the 'AC5P' prompt in the
configuration menu.
Default code 0000 will disable the security code
allowing direct access to the setpoints in the display
mode by pressing the
P and ▲ buttons
simultaneously. Unless otherwise requested new
instruments with alarms are supplied with this
function disabled and the security code set to 0000.
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