Servo Ventilator 300/300A
Description of functions
E382 E380E 061 01 03 01
Siemens-Elema AB
31
2
3.1 Microprocessor CPU
including COM-PROM functions
This includes functions for computer
communication (RS-232) via 3.7
SERIAL
COMMUNICATION
PORTS
as described in the
Reference Manual "Servo Ventilator 300/
300A, Computer Interface (Firmware version
2.X)", Order No. 63 14 061.
This block also contains a real time clock
with battery backup, driven by a quartz
crystal of 32768 Hz. The purpose of this
clock is to time stamp the trend values
stored in the ventilator. There is also a
possibility to read the actual time through
the RS-232 communication.
3.2 I/O buffers
Analog and digital input and output stages
for the main block 3
COMPUTER
INTERFACE
.
3.3 A/D, D/A
Analog to digital and digital to analog
conversion in connection with the block
3.1
MICROPROCESSOR
CPU
.
3.4 Battery
On board mounted Lithium battery (3.5 V).
The battery backs up the trend data memory
and the real time clock in the block
3.1
MICROPROCESSOR
CPU
when the SV 300 is
switched off.
Normal service interval for exchange of the
battery is approx. 5 years. Replacement of
the battery is described in chapter
”
The voltage level in the battery circuit is
monitored resulting in an error indication on
LED D3 (see 3.9 LED indicators) if the
voltage level is below 3.6 V or above 4.5 V.
An information message is also displayed on
Servo Screen 390 if such unit is connected
to the SV 300.
Note
– The voltage level measured in the
battery circuit is higher than the voltage level
in the battery itself.
3.5 Master/Slave connection
15 pole D-sub connector (N80). Can be used
for the synchronization of two Servo
Ventilator 300. Only Siemens connection
cable must be used.
Pin configuration and signal names can be
found in chapter "
".
3.6 Analog I/O terminal
62 pole D-sub connector (N81). Can be used
for connection of monitoring/recording
equipment.
Input control signals can be connected at
N81 to control some ventilator functions
(e.g. when using Bi-Phasic Ventilation).
These input signals are routed via two
sockets, J2 and J3, on PC 1587.
To enable the control functions, jumpers
must be mounted in the sockets.
Pin configuration, signal names and jumpers
can be found in chapter "
Содержание Servo Ventilator 300
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