Display and control keys
AP20S
Date: 24.08.2020
Art. No. 89992
Mod. status 133/20
Page 7 of 79
1.4
Switching on the operating voltage
The AP20S will be initialized after switching on the supply voltage. A system and display test
is executed during initialization, the LEDs are lighted consecutively and the parameters are
loaded from the non-volatile memory into the RAM of the controller.
At first use, the default values are used during initialization. After the return of the external
power supply or software reset (warm start), the AP20S works with the last saved parameters.
Unless a fault has been detected, the AP20S starts normal operation.
2
Display and control keys
2.1
General
Fig. 1: Display and control elements
2.2
LCD display
The display range is limited to -199999 … 999999. Values outside this
range are displayed with "
FULL
".
The actual value is displayed in the first line and "
----
" in the second line. The target
value can be declared valid by means of CW.9 = 1 and displayed in the second line. If
necessary, a direction indicator (arrow) is also displayed.
The battery status is indicated by the battery symbol
. If battery voltage Target value
acknowledgment mode critical value, the battery symbol on the display will flash. If the value
falls below a minimum value or if the battery is missing, the symbol lights permanently.
With incremental measurement function activated, the incremental measurement symbol
is shown.
LED1
LED2
Display
LED3 (NS)
LED4 (L/A1)
LED6 (MS)
LED5 (L/A2)
Key Calibration
Key Incremental
measurement
Key Configuration