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9
INSTALLATION
9.1
General
The incoming power supply (42 V AC) to the A2--A6 Process Controller (PEH) is
obtained from the welding power source via the control cable, which also carries the
bus communication between the two units.
See the connection diagram on page 14.
9.2
Internal connections
S
Connect incoming cables to the 12--pole connector (XS1) and the circuit board
contacts on the inside of the control unit. All the cables are screened, and the
screens must be connected to the earth points intended for them.
The 12--pole connector, XS1, is connected internally to circuit board connectors
K13 and K9 and to terminal block X2.
One conductor (emergency stop) is connected to emergency stop switch ST1.
One conductor (emergency stop) is connected to terminal block X2.2
One conductor (arc voltage) is connected to terminal block X2.1
Draw counter balancing for incoming cable.
Two conductors (x3) (42 AC)
are connected to K13.1 and
K13.2 (2,5 mm
2
).
Two conductors (bus communication) are
connected to K9.1 and K9.2 (0,5 mm
2
) on
the NME circuit board (AP2).
GB