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2-2
Connecting Your 1394 SERCOS Interface System
Low voltage
Communications
Control I/O wiring
Motor feedback cables
Always cross high and low voltage
conductors at 90 degree angles.
SERCOS System Module
SERCOS System Module
Publication 1394-5.20 — July 2001
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 2.1
Routing Cables Inside Your Cabinet
Always separate all low voltage signal wiring
from high voltage power wiring to reduce affects
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
distance between
high and low
voltage cables on
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
of EMI and RFT.
SERCOS System Module
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
Maximize
SERCOS System Module
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
wire way.
Unshielded lead length
less than or equal to
76.2 mm (3.0 in.)
Motor power
360/480V
cables
AC power
Unshielded
conductors
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