Service manual

Servo Ventilator 300/300A Description of functions
E382 E380E 061 01 03 01 Siemens-Elema AB 23
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Microprocessor module
PC 1588
A MICROPROCESSOR MODULE, PC1588 (1), is
included on each one of the following five
PC boards:
• PC 1605 – REFERENCE & TIMING
• PC 1608 – MONITORING
• PC 1614 – PANEL INTERFACE
• PC 1615 – EXP. FLOW LINEARIZATION
• PC 1616 – INSPIRATORY CONTROL.
PC 1588 is mounted with its two rows of
connectors (P65 and P66) into the
corresponding connectors (HYB1) on the
above mentioned PC boards.
PC 1588 is a programmable digital control
block including:
• Microprocessor
• Analog – digital conversion
• Digital – analog conversion
• Digital I/O.
PC 1588 includes a green/red WATCHDOG LED
D1 (3). The LED indications are as follows:
– Green LED: Microprocessor program is
running.
– Red LED: Program error indication.
– LED not lit: Microprocessor program not
running.
PC 1588 also includes an exchangable
program memory, PROM (2). The function
of PC 1588 depends on this PROM which is
different on the five different enumerated
boards. The PROM functions are mentioned
in the description of the following blocks:
• 2.1 Panel CPU (PAN-PROM)
• 4.1 Monitor/Alarm CPU (MON-PROM)
• 6.1 Mode CPU (REF-PROM)
• 7.1 Mixer CPU (MIX-PROM)
• 18.1 Linearizing CPU (LIN-PROM)
Note – The MICROPROCESSOR -block on
PC 1587 – COMPUTER INTERFACE, includes two
PROM modules (COM-PROM).
PC 1588 is not used on PC 1587.
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300-A13X
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