Söring Arco-3000 - Co-Operation of Units

25/08/2004 © Söring Service-Manual Arco- and RF-units
1
not valid for A-3000/ -2000
2
not valid for Arco-2000
-12-
3
not valid for MBC600
4
not valid for Arco-1000
1.2 Co-operation of units
The equipment contains the following units:
- Electrical components
-Primary power supply unit: transformer, line-filter, power switch and parts
of mains board
-mains board with low-voltage power supply, mains relays and voltage
selector switch
-High-power supply
-Cut -module incl. Interface
-Coagulator-module incl. Interface
-RF-output module incl. Handpiece allocation, PE-monitoring and bipolar
recognition
2,3,4
-Handpiece recognition
-Gas control
1
-Synchronization board
1
-Front panel (modular design)
-Micro controller (CPU)
-Mechanical components
-Gas system
1
The wiring of the modules and their cooperation is shown on the following block diagram
and the voltage-supply plans. Power is connected to the mains power socket, which
contains the mains fuses and a parasitic suppresser filter. Via the mains switch the power
goes to the mains board. This contains a voltage selector and an inrush current limiter (a
resistor, which is short-circuited after approximately 1 second). The mains voltage goes
to the primary winding of the transformer. It feeds the low-voltage power supply and via a
separate rectifier bridge and smoothing capacitors the high power supply. These two
units are also placed on the mains board together with a low voltage power supply.
The power supply of the other modules is provided by two different power supplies. The
low-voltage power supply (on mains board) feeds front panel, microprocessor, handpiece
recognition and RF-output module. The high-power part, consisting of coagulator- and
cut-module, is fed by the high-power supply.
The power modules deliver RF-signals to the RF-output module (HFO). Here the RF-
signal first passes through a power measuring device, is then converted to the necessary
output voltage by means of an output transformer and is finally switched to the desired
handpiece by the allocation relay. Furthermore the RF-output module contains checking
circuits for the PE-contact check and a tissue contact detection for the bipolar output.
The handpiece recognition (HSE) delivers information regarding type of connected
handpiece respectively its switch functions to the CPU via the handpiece bus. The
sensing of footswitches is also performed by this module.
The CPU-board (microprocessor) controls the complete sequence of the equipment. It
gets information about the desired mode from the front panel modules via an I
2
C-bus.The
power modules (high-power supply, cut- and coagulator module) are controlled by a
parallel module control bus. The check of actual voltage of the high-power supply as well
as the status of the power modules is done via the module status bus, which connects
the power modules with the RF-output. This information is transferred from the RF-output
module to the CPU via the status bus.
The relay control, check of delivered output power, status of PE-electrode and tissue
contact recognition on the RF-output module is done via the I
2
C-bus.
In order to protect the software functions the CPU-board is connected to a
microprocessor watchdog and a voltage monitor on the power supply board.
The control of argon gas flow supplied to the handpiece is performed by the gas control
board located at the CPU-board. Gas control is carried out by the CPU via the I
2
C-bus.