Lincoln Electric Flextec 650x, Operator'S Manual, Page: 13 / 56

CONTROL CAbLE CONNECTIONS
General Guidelines
Genuine Lincoln control cables should be used at all times (except
where noted otherwise). Lincoln cables are specifically designed
for the communication and power needs of the FLEXTEC
®
650x.
Most are designed to be connected end to end for ease of
extension. Generally, it is recommended that the total length not
exceed 100 feet (30.5 m). The use of non-standard cables,
especially in lengths greater than 25 feet, can lead to commu-
nication problems (system shutdowns), poor motor acceleration
(poor arc starting), and low wire driving force (wire feeding
problems). Always use the shortest length of control cable
possible, and DO NOT coil excess cable.
Regarding cable placement, best results will be obtained when
control cables are routed separate from the weld cables. This
minimizes the possibility of interference between the high currents
flowing through the weld cables, and the low level signals in the
control cables.
PARALLELING
FLEXTEC ® 650x power sources may be paralleled for increased
output requirements. No kit is required for paralleling of
FLEXTEC
® 650x power sources. The FLEXTEC ® 650X can only be
paralleled for constant current processes (mode switch must be in
the SMAW position). Connect the power sources as shown, and
set the output control of each power source to one half of the
desired arc current. (See Figure A.3)
A-7
INSTALLATION
FLEXTEC ® 650x
PPO OSSIITTIIVVEE
AATT W WO ORRKK PPIIEECCEE
PPO OSSIITTIIVVEE
AATT W WO ORRKK PPIIEECCEE
PPO OSSIITTIIVVEE
A A
NNEEG GAATTIIVE VE
W W
PARALLELING DIAGRAM
VV
UU
IINNPPUUTT
TTEERRM MIINNAL AL
VV
W W
IINNPPUUTT LLIINNES ES
A A
NNEEG GAATTIIVE VE
TTO O G GRRO OUN UNDD
EELLEECCTTRRIICCAALL CCO ODDEE
PE PERR NNAATTIIO ONNAALL
UU
G GNNDD
NNEEG GAATTIIVE VE
TTO O G GRRO OUN UNDD
G GNNDD
PPEERR NNAATTIIO ONNAALL
EELLEECCTTRRIICCAALL CCO ODDEE
BBLLO OCCKK
FFlextec lextec 66550x 0x
((M MAACCHHIINNEE #1 #1))
FFlextec lextec 66550x 0x
((M MAACCHHIINNEE #2 #2))
IINNPPUUTT
TTEERRM MIINNAL AL
BBLLO OCCKK
W W
VV
UU
VV
W W
IINNPPUUTT LLIINNES ES
UU
FIGURE A.3