Service Manual
rev 5.0 with software Ind1V022
2.4.4 Encoder
The encoder connections may be split into two cables, then the signal conductors (4pcs) should go together in
one cable and the supply and common (+24V/0V) together in another cable. The encoder cable(s) must be
shielded round cable(s) and grounded 360° at both ends.
Note! All shielded cables must be placed as far from the motor cables as possible (>20cm).
Shielding must be continuous. The "pigtail" (= the end to be connected) of the shield should not
be used, instead 360° grounding should be used to minimize disturbances.
If control cable length is over 100m (from transformer to inverter) or inverter is not mounted on
the crane, make sure that Basic I/O board (Slot A) is at least revision 271G and I/O Extension
board (Slot D) is at least revision 266H
2.5 EMC compatible grounding
2.5.1 Construction
connections
All metal construction parts of the cubicle must be electrically connected to each other using largest possible
surface area. Paint to paint connection must not be used.
2.5.2 Cable
connections
Control cables and power cables should be separated and routed separately for eliminating noise coupling.
The distance between braking resistor cables and the other cables should be kept as long as possible. The
distance between the resistor cables should be kept as low as possible to prevent the antenna behavior.
Cable lengths should be kept as short as possible to minimize coupling capacitances and inductances.
2.5.3 Shielded control cables
Shielded control cables should be grounded in both ends. The shield must be connected to the ground using
the largest possible surface area. Extra intermediary terminators cutting the shield are not allowed, the shield
should be as integrity as possible. Spare conductors should be grounded in the both ends. All shielded cable
shields should be 360° grounded.
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Drivecon Inc. reserves the right to alter or amend the above information without notice.
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