-- 4 4 --
cdte1de1
AP07 AC control circuit board
All functions on this circuit board are g alvanically isolated f rom the rest of the machine,
except GND3, which is connected to negative. See the the diagram on page 45.
From serial no. 246--xxx--xxxx a new version of the board is fitted t o the machines. T his
description applies to all versions of the board. All versions can be used in all machines.
AP07:1 Power supply
Power supply for AP07
A switched power supply, operating at 40kHz, is used in order to provide
galvanic separation of the IGBT drive voltages.
To check the adjustment of the power supply measure between pins 1 and 3 at
the test connector XD. The voltage must be 28V ±1V. If it is out of tolerance
adjust with potentiometer R1.
The voltages +17V/1--4, --11V/1--4 and GND1--4 are connected to the IGBT
drives, see page 45.
+5V and +15V is used for internal power supply on the board. The tolerances
are ±4%.
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