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5133.001
Function Description
Zeus
Figure 18
Block diagram of the Metering Module PCB
The valves are controlled by a valve driver. When the microcontroller is in
Reset mode the power is cut to all valves. To minimise the power loss from
the valves, the voltage is switched down from 18 V to 7 V by means of an
integrated circuit (step-down regulator) once the valves have been actuated.
In the event of an error, the valves are shut off by way of an additional inte-
grated circuit located in the supply voltage line (high-side switch).
The heaters in the metering module are controlled by PWM-capable switch-
ing transistors. When the microcontroller is in Reset mode the power is cut to
all heaters. In the event of overheating, the heaters are shut off by the tem-
perature monitor by way of a high-side switch.
Содержание Zeus
Страница 1: ...5133 001 9036190 Revision 3 0 Because you care Technical Documentation Zeus Anesthetic workstation ...
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Страница 8: ...All rights reserved Copyright reserved K5133001IECIVZ fm 03 05 06 VI Contents ...
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