BEKA BA364E, Руководство пользователя

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6.7 Input b:
inPut-b
The Input b function contains two sub-functions
inP . tYPE
and
dEbounCE
that define the type of input
and the amount of input noise rejection.
6.8 Input b type:
inP. tYPE
inP. tYPE
is a sub-menu in the
inPut-b
function
which defines the type of input sensor or input pulse
that the instrument will count at Input-b. To check or
change the type of input, select
inPut-b
in the
configuration menu and press
(
which will reveal
the
inP. tYPE
prompt, pressing
(
again will show the
existing Input-b setting . If set as required press
)
twice to return to the configuration menu, or
repeatedly press the
&
or
*
button until the
required type of input is displayed and then press
)
twice to return to the configuration menu.
One of following six types of input may be selected:
Switching
thresholds
Low High
oP . CoL
Open collector
2
2 10k Ω
VoLt5L
Voltage pulse low 1 1 3V
VoLt5H
Voltage pulse high
1
3 10V
CoiL
Magnetic pick-off 0 40mV
Pr . dEt
Proximity detector 2 1.2 2.1mA
ContACt
Switch contact 2 100 1000 Ω
Notes:
1. Maximum voltage input +28V.
2. For sensors connected to Input-b that require
energising i.e. proximity detectors, switch
contacts or open collector sensors, terminals 7
& 8 of the BA364G should be linked together.
3. To count correctly, the input pulse must fall
below the lower switching threshold and rise
above the higher switching threshold.
4. See section 6.6 for the maximum counting
frequency.
6.9 Input b debounce:
dEbouncE
Exactly as input A, please see section 6.6
6.10 Input A pulse counting edge:
CntEdg-A
This function allows the edge on which a count
occurs to be selected.
It applies to input A for all
counting modes except quadrature (
A rEL b
).
To check or change the input A pulse edge on which
the count occurs select
CntEdG-A
from the
configuration menu and press
(
which will reveal
EdGE 1
or
EdGE 2
. If required press the
&
or
*
button to change the setting, followed by the
)
button to return to the configuration menu.
EdGE 1
Type of input Counting edge
Voltage Low to high
Switch contact Closed to open
Open collector Closed to open
Proximity detector High to low current
EdGE 2
Type of input Counting edge
Voltage High to low
Switch contact Open to closed
Open collector Open to closed
Proximity detector Low to high current
Note:
The counting edge function
CntEdg-A
is not
included in the configuration menu when the
BA364G Counter has a quadrature input
A rEL b
.
In quadrature mode the instrument will count up
when the rising edge of input-b leads the rising
edge of input-A.
See section 6.13.
6.11 Input b pulse counting edge:
CntEdg-b
This function allows the edge on which a count
occurs to be selected.
It applies to input b for all
counting modes except quadrature
A rEL b
and input
A controlled by input b
A Con b
.
To check or change the input b pulse edge on which
the count occurs select
CntEdG-b
from the
configuration menu and press
(
which will reveal
EdGE 1
or
EdGE 2
. If required press the
&
or
*
button to change the setting, followed by the
)
button to return to the configuration menu.
EdGE 1
Type of input Counting edge
Voltage Low to high
Switch contact Closed to open
Open collector Closed to open
Proximity detector High to low current
EdGE 2
Type of input Counting edge
Voltage High to low
Switch contact Open to closed
Open collector Open to closed
Proximity detector Low to high current
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