Parker H Series, Installation & Service Instructions Manual

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Industrial Automation Wiring and Grounding Guidelines E115P
3
Route Conductors
To guard against coupling noise
from one conductor to
another, follow these general guidelines (Table B) when
routing wires and cables (both inside and outside of an
enclosure). Use the spacing given in these general
guidelines with the following exceptions:
• Where connection points (for conductors of different
categories) on a device are closer together than the
specified spacing.
• Application-specific configurations for which the
spacing is described in a publication for that specific
application.
These guidelines are for noise immunity only. Follow all
local codes for safety requirements.
Important: These guidelines assume that you follow
the Surge-Suppression guidelines (page 15). While
these guidelines apply to the majority of installations,
certain electrically harsh environments may require
additional precautions.
The use of the guidelines in Table B are illustrated in
Figure 1.
Table B
Follow these Guidelines for Routing Cables to Guard Against Noise
Route this category
of conductor cables:
According to these guidelines:
Category 1 These conductors can be routed in the same cable tray or raceway with machine power conductors of up to
600VAC (feeding up to 100 hp devices).
Category 2 • If it must cross power feed lines, it should do so at right angles.
• Route at least 5 ft from high-voltage enclosures, or sources of rf/microwave radiation.
• If the conductor is in a metal wireway or conduit, each segment of that wireway or conduit must be bonded
to each adjacent segment so that it has electrical continuity along its entire length, and must be bonded to
the enclosure at the entry point.
• Properly shield (where applicable) and route in a raceway separate from category-1 conductors.
• If
in a contiguous metallic wireway or conduit
, route at least 0.08m (3 in) from category-1 conductors
of less than 20A; 0.15m (6 in) from AC power lines of 20A or more, but only up to 100 kVA; 0.3m (1 ft) from
AC power lines of greater than 100 kVA.
• If
not in a contiguous metallic wireway or conduit
, route at least 0.15m (6 in) from category-1
conductors of less than 20A; 0.3m (1 ft) from AC power lines of 20A or more, but only up to 100 kVA; 0.6m
(2 ft) from AC power lines of greater than 100 kVA.
Category 3 Route conductors external to all raceways in the enclosure or in a raceway separate from any category-1
conductors with the same spacing listed for category-2 conductors, where possible.