PROFACE PS-4700 Series, Руководство пользователя

Страница: 24 / 164

Important Information
24
Cable Connections
Division 2 hazardous location regulations require that all cable connections be
provided with adequate strain relief and positive interlock. Use only non-incendive
USB devices as USB connections do not provide adequate strain relief to allow the
use of the Industrial Personal Computer’s USB connections
(see page 99) . Never
connect or disconnect a cable while power is applied at either end of the cable. All
communication cables should include a chassis ground shield. This shield should
include both copper braid and aluminum foil. The D-sub style connector housing
must be a metal conductive type (e.g., molded zinc) and the ground shield braid
must be terminated directly to the connector housing. Do not use a shield drain wire.
The outer diameter of the cable must be suited to the inner diameter of the cable
connector strain relief so that a reliable degree of strain relief is maintained. Always
secure the D-Sub connectors to the workstation-mating connectors via the two
screws located on both sides.
Operation and Maintenance
The systems have been designed for compliance with relevant spark ignition tests.
NOTE: IP65 are not part of UL certification for hazardous locations.
DANGER
EXPLOSION HAZARD

Always confirm the ANSI/ISA 12.12.01 and CSA C22.2 N

213 hazardous
location rating of your device before installing or using it in a hazardous location.

To power on or power off a Industrial Personal Computer installed in a Class I,
Division 2 hazardous location, you must either:

Use a switch located outside the hazardous environment, or

Use a switch certified for Class I, Division 1 operation inside the hazardous
area.

Do not disconnect equipment unless power has been switched off or the area
is known to be non-hazardous. This applies to all connections including power,
ground, serial, parallel, and network connections.

Never use unshielded / ungrounded cables in hazardous locations.

Use only non-incendive USB configuration.

When enclosed, keep enclosure doors and openings closed at all times to avoid
the accumulation of foreign matter inside the workstation.
Failure to follow these instructions will result in death or serious injury.
DANGER
EXPLOSION HAZARD
In addition to the other instructions in this manual, observe the following rules when
installing the Industrial Personal Computer in a hazardous location:

Wire the equipment in accordance with the National Electrical Code article
501.10(B) for Class I, Division 2 hazardous locations.

Install the Industrial Personal Computer in an enclosure suitable for the specific
application. IP65 enclosures are recommended even when not required by
regulations.
Failure to follow these instructions will result in death or serious injury.