Connecting
5.3 Connecting CM to functional ground
SIMATIC RF166C
34
Operating Instructions, 12/2019, C79000-G8976-C578-01
5.3
Connecting CM to functional ground
5.3.1
Connecting CM to functional ground
You need to connect the RF166C communication module to functional ground. For this
purpose, a grounding screw for one ground conductor is provided on the communication
module.
If a grounded metal mounting surface is used, the bottom mounting screw of the RF166C
module already establishes a reliable grounding connection. This eliminates the need for a
separate ground conductor.
This connection to functional ground is also required to discharge any interference currents
to ground and for EMI resistance.
Protection against external electrical influences
Below is a description of what you must pay attention to in terms of protection against
electrical impacts and/or faults:
●
In all plants or systems in which the communication module is installed, you must ensure
that the plant or the system for dissipating electromagnetic interference is connected to
functional ground.
●
For supply, signal and bus lines, you must ensure that the laying of the lines and the
installation is correct.
●
For signal and bus lines, you must ensure that a wire/cable breakage or a cross-circuit
does not lead to undefined states of the plant or system.
5.3.2
Mounting the CM on a conductive base
Requirement
Conductive base for mounting the module.
Required tools
You need the following tool to connect to the functional ground:
●
Screwdriver
Accessories required
You need the following accessories to connect to the functional ground:
●
Fastening screw (M4) and washer
Содержание SIMATIC RF166C
Страница 6: ...Table of contents SIMATIC RF166C 6 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 14: ...Security recommendations SIMATIC RF166C 14 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 20: ...Description 3 3 Design SIMATIC RF166C 20 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 98: ...Programming via SIMATIC controller SIMATIC RF166C 98 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 156: ...Service and maintenance 10 5 Module replacement SIMATIC RF166C 156 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 160: ...Dimensional drawings SIMATIC RF166C 160 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 176: ...Service Support SIMATIC RF166C 176 Operating Instructions 12 2019 C79000 G8976 C578 01 ...