BEKA BA364D, Manual

Page: 53 / 93

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3.5.2 Function of instrument: ‘Function’
This is the first parameter in the programme
menu which conditions the instrument as a
counter, timer, tachometer or as a clock.
CAUTION
Function must be defined before any of the
other parameters are programmed. It is
protected by a password to prevent
accidental changes.
To define the function of the instrument select
‘Function’ from the main menu and press
P which
will reveal the existing setting. Pressing the Up
or Down button will scroll through the four
options:
Display Instrument function
‘CountEr’ Counter
‘CLOC’ Clock
‘tACHO’ Tachometer
‘ELAPSE’ Timer
When ‘ELAPSE’ is displayed, press P which will
result in ‘SEt.nO’ being displayed. To proceed
press
Up or Down which will change this to
‘SEt.YES’. To confirm the function change, press
P which will result in prompt 'SEt 0000' with one
digit flashing. Using the Up , and Down buttons
and the P button to move to the next digit, enter
the password 'SurE'. Note 'S' is entered as '5'.
Finally, pressing
E will execute the change to a
timer and return the display to the 'Function'
prompt in the main menu.
3.5.3 Type of input: ‘InPut A’ and ‘InPut b’
To define an input type select ‘InPut A’ or ‘InPut
b’ from the menu and press
P, which will reveal
the current input type. Pressing the Up or Down
button will scroll through the five options:
‘UOLtS’ Voltage input
Threshold 1V and 3V
‘COIL’ Low voltage
Threshold 20mV peak
‘Pr.dEt’ NAMUR proximity detector
Threshold 1.2 and 2.1mA
‘COntACt’ Switch contact
Threshold 100 and 1000
‘OP.COL’ Open collector
Threshold 2k
and 10k
When the required type of input has been
selected press
E to enter the selection and return
to the ‘InPut A’ or ‘InPut b’ prompt in the main
menu.
Note: To operate reliably, the input signal must
fall below the lower switching threshold and rise
above the upper switching threshold.
3.5.4 Start and stop: ‘StArStOP’
This function defines how the timer is started and
stopped. Five options are selectable, allowing
the timer to be controlled by inputs A and B or
from the front panel push buttons.
To check or change how the timer is controlled,
select 'StArStOP' from the main menu and press
P which will reveal the current setting. The
options are shown in the following tables.
Voltage inputs and control from front panel
Display
Start Stop
‘ControL1’ A high B high
‘ControL2’ A low B low
‘ControL3’ A high A low
‘ControL4’ A low A high
‘LOCAL’ Down button Up button
Contact and open collector inputs
Display Start Stop
‘ControL1’ A open B open
‘ControL2’ A closed B closed
‘ControL3’ A open A closed
‘ControL4’ A closed A open
Proximity detector inputs
Display Start Stop
‘ControL1’ A low B low
‘ControL2’ A high B high
‘ControL3’ A low A high
‘ControL4’ A high A low
When the required option has been selected
press
E to return the instrument to the main
menu.
Notes: The timer controls have been allocated
the following relative priorities:
Reset, Set time, Stop, Start
Stop therefore always overrides start.
When the timer elapsed time equals the
set time SEt t, an internal stop signal is
generated which automatically stops the
timer.