5/2004 Manual for connection and operation of the EV-94 EB page 20 of 28
5. Switchpoints resp. alarm-boundaries
Please note:
The settings of the switchpoints will be cancelled, when no button was pressed for more than
60 sec. changes you may have made already won‘t be saved and will be lost!
Please note:
The settings of the switchpoints and alarm-boundaries will automatically be reset to factory
default when any changes for the settings “InP”, “SEnS“ resp. “Unit“ had been made!
Hint:
The buttons 2 and 3 are featured with a ‘roll-function‘. When pressing the button once the value will be raised
(button 2) by one or lowered (button 3) by one. When holding the button pressed for longer than 1 sec. the
value starts counting up or down, the counting speed will be raised after a short period of time.
The device also features an ‘overflow-function‘, when reaching the upper limit the device switches to the lower
limit, vice versa.
-
When pressing button 1 for >2 sec. the menu to select the switchpoints and
alarm-boundaries will be called.
-
Depending on the configuration you have made in the „output“ menu you
will get different Display values. Please follow the specific chapter for fur-
ther information.
Function
Description
Output 1
Output 2
Selected
as output
Go on in chapter
No output, device is used
as displaying unit
---
---
no
No function call
possible
2-point-controller
digital
2-point-controller
---
2P
5.1
3-point-controller
digital
2-point-controller
digital
2-point-controller
3P
5.1
2-point-controller with
min-/max-alarm
digital
2-point-controller
min-/max-alarm
2P.AL
5.2
min-/max-alarm, common ---
min-/max-alarm
AL.F1
5.3
min-/max-alarm, individ-
ual
max-alarm
min-alarm
AL.F2
5.3
5.1. 2-point-controller, 3-point-controller
This chapter describes how to configure the device as a 2-point-controller resp. 3-point-controller.
This instruction demands that you selected “
2P
“ or “
3P
“ 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 “
1.on
“ (turn-on-point of output 1).
-
Use button 2 and button 3 to set the desired value, the device’s output 1 should be turning on.
-
Press button 1 to validate your selection. The display shows “
1.on
“ again.
-
When pressing button 1 again, the device will be displaying “
1.off
“. (turn-off-point of output 1)
-
Use button 2 and button 3 to set the desired value, the device’s output 1 should be turning off.
-
Press button 1 to validate your selection. The display shows “
1.off
“again.
Example: You want to control the temperature of a heating coil, with a hysteresis of +2°C, to 120°C.
Therefor you will have to select the turn-on-point “1.on“ to 120°C and the turn-off-point to “122°C“.
When your heating coil temperature falls below 120°C it will be turned on. When the temperature
rises above 122°C the heating coil will be turned off.
Note: Depending on the inertia of your heating coil an overshooting of the temperature may be possible.
When selected ‘2-point-controller‘ you finished configuring your device. Press button 3 to switch over to dis-
play the measuring value.
When selected ‘3-point-controller‘ please follow the instructions given below.
Button 1 Button 2 Button 3
