5/2004 Manual for connection and operation of the EV-94 EB page 22 of 28
5.3. Minimum/maximum-alarm (individual or common)
This chapter describes how to configure the device‘s alarm boundaries for min-/max-alarm-monitoring.
This instruction demands that you selected “
AL.F1
“ resp. “
AL.F2
“ as your desired output function like it is
explained in chapter 4.8.
-
Press button 1
(when not already done)
, the device will be displaying “
AL.Hi
“. (maximum alarm-value)
-
Use button 2 and button 3 to set the desired value, the device should turn on its maximum-alarm.
-
Press button 1 to validate your selection. The display shows “
AL.Hi
“ again.
-
When pressing button 1 again, the device will be displaying “
AL.Lo
“. (minimum alarm-value)
-
Use button 2 and button 3 to set the desired value, the device should turn on its minimum-alarm
-
Press button 1 to validate your selection. The display shows “
AL.Lo
“ again.
-
When pressing button 1 again, the device will be displaying “
A.dEL
“. (delay of the alarm-function)
-
Use button 2 and button 3 to set the desired delay of the alarm-function.
Note:
The unit of the value to be set is in [sec.]. The device will turn on the alarm after minimum
resp. maximum alarm value was active for the delay-time you have set.
-
Press button 1 to validate the delay time. The display shows “
A.dEL
“ again.
Example: You want to have a temperature alarm-monitoring of a greenhouse. The alarm should start when
the temperature rises above 50°C resp. falls below 15°C.
Therefore your settings will be 50°C for the maximum alarm-value “AL.HI“ and 15°C for the mini-
mum alarm-value “AL.Lo“.
The alarm will be starting after the temperature rises above 50°C and stays above 50°C for the
entered delay time resp. after it had been falling below 15°C and stays below 15°C for the en-
tered delay time.
Please note that the alarm-outputs are inverted! This means, that the output will be active when there is no
alarm!
Now you finished configuring your device. Press button 3 to switch over to display the measuring value.
