5/2004 Manual for connection and operation of the EV-94 EB page 15 of 28
-
Use button 2 and button 3 to select the desired measuring range limitation.
Display
Measuring range limit
Note
off
Inactive
Exceeding of the measuring-frequency is tol-
erable until you reach the maximum measur-
ing range limit.
on.Er
active,
(error indicator)
The measuring range is exactly bounded by
the selected frequency-measuring-range-limit.
When exceeding or shortfalling of the limit the
device will display an error message.
on.rG
active,
(frequency range limit)
The measuring range is exactly bounded by
the selected frequency-measuring-range-limit.
When exceeding or shortfalling of the limit the
device will display the lower or upper display-
range-limit.
[e.g. for humidity: when short-
falling resp. exceeding the device will display
0% resp. 100%]
Hint:
When exceeding the maximum range limit (10kHz) independently from the limit setting an error message
will be displayed (“Err.1“).
-
Press button 1 to validate your selection. The display shows “
Li
“ again.
-
When pressing button 1 again, the display will show “
FiLt
“ (Filter
= digital filter
).
-
Use button 2 and button 3 to select the desired filter value [in sec.].
Usable values: 0.01 ... 2.00 sec.
Explanation: this digital filter is a digital replica of a low pass filter.
-
Press button 1 to validate your selection. The display shows “
FiLt
“ again.
Now your device is adjusted to your signal source. The only thing you left do is to adjust the outputs of the
device.
-
When pressing button 1 again, the display will show “
outP
“. (Output)
For configuring the outputs of the EV-94 EB, please follow the instructions shown in chapter 4.8.
4.5. Measuring of rotation speed (TTL, switching-contact)
This chapter describes how to configure the device for measuring rotation speed.
This instruction demands that you selected “
rPn
“ as your desired input type like it is explained in chapter 4.1.
The device has to display “
InP
“.
-
When pressing button 1 the device will display “
SEnS
“.
-
Use button 2 or button 3 (middle resp. right button) to select the desired input signal.
Display
Input-signal
Notes
ttL
TTL-signal
nPn
Switching contact, NPN
For direct connection of a passive switching
contact (e.g. push button, relay) resp. trans-
mitter with NPN output.
A pull-up-resistor is internally connected.
Hint: when using push-buttons or relays, they must
be bounce-free!
PnP
Switching contact, PNP
For direct connection of a transmitter with
PNP output.
A pull-down-resistor is internally connected.
Hint:
For the connection of a frequency-transmitter, please follow the instructions given in chapter 3.3.6
When connecting a switching-contact-transmitter with increased frequency range (= with external circuitry)
you have to select TTL as your desired input signal.
-
Press button 1 to validate your selected input signal. The display shows “
SEnS
“ again.
