Keller EV-94 EB, Manual For Connection And Operation

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5/2004 Manual for connection and operation of the EV-94 EB page 12 of 28
4.2. Measuring voltage and current (0-50mV, 0-1V, 0-2V, 0-10V, 0-20mA, 4-20mA)
This chapter describes how you configure the EV-94 EB for measuring voltage- resp. current-signals from an
external transmitter. This instruction demands that you selected “
U “ or “ I “ as your desired input type like it is
explained in chapter 4.1. The display has to show “ InP “.
- Press Button 1. The display shows “ SEnS “.
- Select the desired input signal using button 2 or button 3 (middle resp. right button).
Display Input Signal
(voltage measuring)
Notes
10.00 0 – 10 V
2.00 0 – 2 V
1.00
0 – 1 V
0.050
0 – 50 mV
Display
Input signal
(current measuring)
Notes
4-20 4 – 20 mA
0-20
0 – 20 mA
- Validate the selected input signal by pressing button 1. The display shows “ SEnS “ again.
- Press button 1 again, The display will show “ dP “ (decimal point).
- Select the desired decimal point place by pressing button 2 resp. button 3.
- Validate the selected decimal position by pressing button 1. The display shows “ dP “ again.
- Press button 1 again, the display will show “ di.Lo “ (Display Low = low display value ).
- Use button 2 resp. button 3 to select the desired value the device should display when a 0mA, 4mA
resp. 0V input signal is attached.
- Validate the selected value by pressing button 1. The display shows “ di.Lo “ again.
- Press button 1 again, the display will show “ di.Hi “ (Display High = high display value ).
- Use button 2 resp button 4 to select the desired value the device should display when a 20mA, 50mV,
1V, 2V resp. 10V input signal is attached.
- Validate the selected value by pressing button 1. The display shows “ di.Hi “ again.
- Press button 1 again. The display will show “ Li “ (Limit = Measuring range limit ).
- Use button 2 resp. button 3 to select the desired measuring range limit..
Display Measuring range limit Notes
Off Deactivated
Exceeding of the measuring range limit is
tolerable for about 10% of the selected input
signal.
on.Er Active,
(displays error)
The measuring range limit is exactly bounded
by the input signal. When exceeding or
shortfalling the input signal the device will
display an error message.
on.rG
Active,
(displays the selected limit)
The measuring range limit is exactly bounded
by the input signal. When exceeding or
shortfalling the input signal the device will
display the selected lower/upper display
value.
[e.g. humidity: when shortfalling or exceeding,
the device will display 0% resp. 100%]
Hint: When exceeding the measuring range limit > 10% independently from the setting, the device will always
display an error message (“Err.1“ resp. “Err.2“).