Erbe APC 2 Service Manual

5 • Circuit Descriptions
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80116-276_V24169 2022-01
IIF (Instrument Interface)
The instrument interface assembly may be found up to four times in the
VIO system: twice in the electrosurgical unit and twice in the APC
2 unit
and VEM
2 unit respectively.
The IIF is used to provide the system with the key instrument information
via an electrically isolated serial interface:
Activation recognition The activation recognition checks whether one of the activation buttons
(or ReMode button) has been pressed. It is designed to analyze the differ
-
ent coding systems (diode coding, resistor coding connected in parallel or
series).
Socket recognition The socket recognition can recognize the type of socket via the coding
jumpers on the socket connectors.
Instrument recognition
(only relevant for
multifunction and APC
sockets)
The instrument recognition can identify instruments coded by resistance
and read instruments equipped with an electronic memory, transmitting
the relevant data to the system.
This data is converted to CAN using the "CPU + Sensors" and sent to the
control panel.
The safety relays, which switch the HF voltage on activation to the instru-
ment connected, are also located on the IIF assembly. The actual switching
state of the relay is reported back to the system such that defective relays
or incorrect switching states can be recognized.
There are two types of IIF:
• IIF ME: for monopolar instruments, equipped with a relay that can
switch the activated electrode to the instrument.
• IIF BE: for bipolar instruments and multifunction instruments designed
for bipolar use only. Each equipped with one relay for the activated
electrode and patient plate.
Socket type Type
number
Pin 2 - Pin 6 Pin 1 - Pin 6
Bipolar 1 – X
Monopolar 2 X –
Multifunction (MF)
1
1. Only relevant for VIO 300 D or in conjunction with a VIO 300 D.
3 X X
APC 4 – –

Erbe APC 2 Specifications

General

Brand	Erbe
Model	APC 2
Category	Medical Equipment
Language	English