Reliance electric GV3000 Instructions Manual page 117

C.4.5 I/O Signals
C.4.6 Operator Control Stations
C.4.7 Connecting to the AutoMax Network
Compliance with Electromagnetic Compatibility Standards
Control (I/O) and signal wiring must be run in continuous, rigid, conductive conduit or
continuously-screened cable as shown in figure C.8. Note that the use of flexible metal
conduit, open wire, or wire in trays is not acceptable. Many flexible metal conduit
products have not been designed for RF containment and are not adequate to
maintain compliance.
The enclosure of an operator's control station must be constructed of a conductive
metal. The cover of the enclosure should be bonded to the case and not rely on the
hinge for bonding. Standard industrial operator devices, e.g., pushbuttons, switches,
and meters, may be used.
The wiring connecting the operator's devices to the drive must be run in continuous,
rigid, conductive conduit, continuously-screened armored cable, or equivalent. Note
that the use of flexible metal conduit, open wire, or wire in trays is not acceptable.
Many flexible metal conduit products have not been designed for RF containment and
are not adequate to maintain compliance.
Proper glands must be used to terminate the operator's control station conduit/cable
at the station and the drive. The gland must secure the cable screen to the conductive
surfaces of the drive and station enclosure. A full 360° screen termination is
preferred. Screen pigtails are not permitted.
GV3000/SE drive connections to an AutoMax network require the use of coaxial cable
as described in instruction manuals J2-3001 and D2-3308. The coaxial cable must be
run in continuous, rigid, conductive conduit.
Proper glands must be used to terminate the conduit at the AutoMax enclosure and
the GV3000/SE drive. The gland must secure the cable screen to the conductive
surfaces of the drive and AutoMax enclosure. A full 360° screen termination is
preferred. Screen pigtails are not permitted.
Stranded copper wire
Plastic insulation
Inner plastic sheath
Compact screen of galvanized (tinned) copper or steel braid
Outer plastic jacket
Figure C.8 – I/O Signal Cable
C-13