Siemens Servo Ventilator 300 - Page 31

Servo Ventilator 300/300A Description of functions
E382 E380E 061 01 03 01 Siemens-Elema AB 29
2
2.8 Opto switch
Time multiplexed driving stage and sensor
receiving stage for all the infra-red sensor
touch pads on the front panel. The function
is controlled by the block 2.1 PANEL CPU
including an automatic adaption of the touch
pad sensitivity to the ambient light level.
This block gives the data to the block 2.1
PANEL CPU.
2.9 Monitor display
This block contains all the red alpha-
numerical four character light emitting diode
displays as well as eight yellow and eight
red alarm indicating light emitting diodes
below the Alarms and messages display on
the front panel. This block is driven directly
from the main block 4 MONITORING.
2A Automode panel
interface
The board PC 1745 AUTOMODE PANEL INTERFACE
contains electronics for handling of the
Automode switch.
The status of the switch is given to the
blocks 2.1 PANEL CPU, 5 MONITORING and
6 REFERENCE & TIMING. The LEDs are driven
from the main block 4 MONITORING.