Routing High And Low Voltage Cables - AB Quality Allen-Bradley 1394 User Manual

Low voltage
Communications
Control I/O wiring
Motor feedback cables
Always cross high and low voltage
conductors at 90 degree angles.
Wiring System, Axis, and Shunt Modules, and Motors (for all systems)

Routing High and Low Voltage Cables

Be aware that when you connect and route power and signal wiring
on a machine or system, radiated noise from nearby relays (relay coils
should have surge suppressors), transformers, and other electronic
drives can be induced into motor or encoder feedback,
communications, or other sensitive, low voltage signals. This can
cause system faults and communication problems. To minimize the
levels of radiated noise, route machine power and signal lines
separately.
Figure 3.1
Routing Cables Inside Your Cabinet
Always separate all low voltage signal wiring
from high voltage power wiring to reduce affects
of EMI and RFI.
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
between high
and low voltage
parallel runs
Status
Do not run low
and high voltage
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
wires in the
same wire way
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
Maximize
distance
cables on
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
Unshielded lead length
less than or equal to
76.2 mm (3.0 in.)
Motor power
460/380V
cables
AC power
Unshielded
conductors
Publication 1394-5.0 — May 2000
3-3