Wartungs- und Reparaturanleitung
Alphaclassic / Betaclassic
Maintenance and Repair Instruction
1118
1118.0XGB_ 06
Page: 6
Controller unit A1 and IR- receiver board A4 (type 1118.03 only)
The controller unit A1 is located underneath the black bellows and is covered by a metal protection plate.
The IR receiver board is plugged onto the controller unit A4 as an additional board.
Both IR preamplifiers B1 and B2 are connected to this board.
One of the preamplifiers is located at the head side, the 2
nd
one at the foot side of the column. The receiver board
A4 and the preamplifiers B1/B2 are permanently supplied with a voltage of 5V. Current consumption is very low
i.e. this affects the battery capacity only negligibly.
If more than one O.R. table with IR remote control is used in a surgical department (same floor) each of these
tables and the correspondig remote control must be set to its individual code – see technical description.
2 potentiometers B3/B4 for the “0” positioning and one potentiometer B7 for the height adjustment are connected
to the controller unit A1. Their positions are monitored by the controller unit and functions are carried out
accordingly.
Output voltages of the potentiometers must always be in the range of 0,16V...4,84V.
Corded hand control (type 1118.03 only)
The corded handcontrol consists of 2 housing parts, a PCB with pushbuttons for the functions and an LED for
status indication,
a keypad foil, and a spiral cable with 4 wires (B5, 5V, 0V, Data).
Voltage for the internal circuit is supplied by the connectors 0V
and 5V. B% is used to switch the controller unit A4 ON and OFF.
The line “DATA” is used for bi-directional communication between hand control and controller unit.
Serial signals are sent by the hand control to actuate functions accordingly. The controller unit sends information
to the hand control to actuate the status LEDs accordingly.
To switch the system on, the button “ON” must be pressed.
The status LEDs “battery, mains, ON” are actuated briefly.
After this sequence only the LEDs that indicate the situation
of the O.R. table will be illuminated.
The individual function buttons can now be actuated.
If no function is actuated for a period of 4 min. the controller
unit will be switched off automatically.
Override A2 (type 1118.03 only)
The functions of the override panel correspond to the
functions of the corded hand control. The override panel
can be used as an emergency control if functions of the hand control or the controller unit A4 fail.
Contrary to the hand control the override panel directly
actuates the valve of the desired function. The motor can
directly be actuated by means of the button “ON”, i.e. 2 buttons must be pressed simultaneously – “ON” + the
function button for the movement.
IR remote control (type 1118.03 only)
Contrary to the corded hand control there is no bi-directional
communication with the controller unit.
The LED “battery” indicates the capacity status of the accumulator inside the remote control.
Information on the capacity of the accumulators of the O.R. table is given at the override board.
If no function is actuated within a period of 1,5 min. the controller
Unit will be switched off automatically.
