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Savina 300
Function descriptions
Electronic assembly
Electronic assembly
Introduction
The electronic assembly contains the following subassemblies:
–
Power supply unit
–
Central Control Board
–
Motor actuator
–
O2 Valve PCB
–
O2 Diaphragm PCB
–
Fan
Power supply unit
The power supply unit delivers the supply voltages for the device. The input
voltage range is 100 V to 240 V AC and 50 Hz to 60 Hz. The power supply
unit can also be operated with an external rechargeable battery (12 V or
24 V).
The connection to the alternating voltage is made by a power cable. The con-
nection for the external rechargeable battery is made by an encoded connec-
tor.
The power supply unit actuates the „Mains power“, „External battery or on-
board power supply“ and „Internal battery“ LEDs. The LEDs are mounted on
the membrane keypad of the control panel and indicate the respective operat-
ing status.
The device includes two internal rechargeable batteries (2 x 12 V) which
enable uninterrupted operation in the event of a mains power failure. The
internal rechargeable batteries supply the O2 sensors with power even when
the device is switched off. When the device is switched on the valid O2 val-
ues are present.
The power supply unit generates the following supply voltages:
–
+5 V
–
-15 V
–
+15 V
–
+24 V
–
+48 V
The output voltages are short-circuit-proof and stable at no-load.
The output voltages are generated according to the following priority, depen-
dent on the input voltages:
Input voltage
Priority
Action
AC voltage
1
Charge external and internal batteries, and maintain the
charge.
External battery/batteries
2
Charge internal batteries, and maintain the charge.
Internal batteries
3
-
Содержание Savina 300
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