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Transcript
Description of functions
Servo Ventilator 300/300A
4.5.1 Supply voltage
PMA = Internal supply voltages.
Reference values as shown in the following Alarm table.
Alarm table:
2
1
Supply
voltage
Alarm limit
Alarm condition
Remark
+5 V
+15 V
–15 V
+24 V
± 5%
± 10%
± 10%
> 33 V, < 18.5 V
If any alarm limit is
exceeded, the signal
POWER_FAILURE.H is
activated.
If the signal POWER_FAILURE.H is
constantly activated during more
than 1 s, the ventilator stops
operating 1 and alarm is activated 2.
The signal POWER_FAILURE.H will activate functions to open the SAFETY VALVE and EXPIRATORY
and close the INSPIRATORY VALVES.
VALVE
2
If the +5 V alarm limit is exceeded; only the Backup alarm system, generating an intermittent audible alarm, is activated. ”Alarms and messages text” and/or flashing LEDs will
not be given on the front panel. All front panel LEDs, indications and displays, will be
turned off.
If any of the +15 V, -15 V or +24 V alarm limits are exceeded; the normal (digital control)
alarm (see 4.1.8 Technical, PMA 5) and the Backup alarm system, generating an intermittent audible alarm, are activated. ”Alarms and messages text” and/or flashing LEDs
will be given on the front panel.
Restart the ventilator.
4.5.2 Airway pressure
PMA: PI = Insp. pressure; signal from main block 12
INSPIRATORY PRESSURE),
PE = Exp. pressure; signal from main block 13
EXPIRATORY PRESSURE).
Reference value Pmax = Preset Upper pressure limit (on Front panel).
Alarm table:
Alarm condition
Remark
PI > Pmax +6 cm H2O or
PE > Pmax +6 cm H2O
As long as the Safety valve stays open caused by any of
these conditions, the Backup alarm system generates
continuous audible alarm.
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Siemens-Elema AB
E382 E380E 061 01 03 01