Electronics Module - Dräger 8000 IC Function Description

2.1.5

Electronics module

The electronics module comprises the following function blocks:
- keyboard
- PCB Display Air Temperature:
a. triggering of display elements for air temperature control
b. read-out of keyboard
- PCB Display Options and PCB Display Humidity/Skin Temperature:
triggering of the individual display elements of the options
- PCB CPU:
a. processor 6802
b. EPROM
c. RAM with internal battery for data backup
d. timer
e. watchdog
- PCB Analog
a. reading in of measured values of climate sensor housing (Inc. 8000 IC) or of
air temperature sensor (Inc. 8000 SC / NC)
b. reading in of climate sensor housing position (Inc. 8000 IC)
c. processor-dependent monitoring circuit for over-temperature and existence of oxygen
sensors
d. processor-dependent monitoring circuit forpresence of oxygen sensors (Inc. 8000 IC)
- PCB Power Pack
a. Rectification of supply voltage +15 V and -15 V
b. Rectification and control of supply voltage +5 V. The voltage regulator is positioned on
the right hand side panel of the electronics module.
c. Charaino circuit for battery of the mains failure-alarm.
d. Trigger circuit for horn and mains failure LED
e. Horn
- Motherboard
a. Address decoder for peripherals
b. PIAs for triggering of peripherals
c. Evaluation of over-temperature alarm
d. Fan failure monitoring
e. Watchdogs
f. Voltage monitoring
g. Evaluation of air heating monitoring
h. Evaluation of impeller monitoring
6141.22X Incubator 8000 IC/SC/NC
Function Description
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