Allen-Bradley micrologix 1500, Руководство пользователя

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Publication 1764-UM001A-US-P
3-6 Wiring Your Controller
Grounding the Controller
In solid-state control systems, grounding and wire routing helps limit the effects of
noise due to electromagnetic interference (EMI). Run the ground connection from
the ground screw of the base unit to the electrical panel’s ground bus prior to
connecting any devices. Use AWG #14 wire. This connection must be made for
safety purposes.
This product is intended to be mounted to a well grounded mounting surface such
as a metal panel. Refer to the
Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1, for additional information. Additional
grounding connections from the mounting tabs or DIN rail, if used, are not
required unless the mounting surface cannot be grounded. You must also provide
an acceptable grounding path for each device in your application.
NOTE
It is recommended to use all four mounting positions for panel
mounting installation.
NOTE
This symbol denotes a protective earth ground terminal
which provides a low impedance path between electrical circuits
and earth for safety purposes and provides noise immunity
improvement. This connection must be made for safety purposes
ATTENTION
!
Remove the protective debris strips before applying power to the
controller. Failure to remove the strips may cause the controller
to overheat.
Grounding Stamping
Grounding Stamping