LT-4201TM/4301TM Hardware Manual
39
Grounding the System
Overview
To minimize the effects of electromagnetic interference, cables carrying the fast
Input/Output, analog Input/Output, and Serial communication signals must be
shielded.
1
To avoid damage to the shielded cable when there is a short circuit in the power
line, set up a multi-point frame ground (FG) each with the same electric potential.
The use of shielded cables requires compliance with the following wiring rules:
z
When there is no protective earth ground, you can use metal conduit or cable duct
shield as a part of the protective earth ground. The functional ground (FE) shield
must attenuate electromagnetic interference and must be shielded the length of
the cable. If the purpose is for both functional and protective grounding, as is
often the case for communication cables, the cable must have continuous
shielding.
z
Wherever possible, keep cables carrying one type of signal separate from the
cables carrying other types of signals or power.
Protective Earth Ground on the Backplane
For protective grounding, connect braided copper cable (that can withstand the
maximum voltage/current allowed by the system) to the conductive backplane.
Functional Ground on the DIN Rail
The DIN rail for your LT is common with the functional ground plane and must be
mounted on a conductive backplane.
WARNING
IMPROPER GROUNDING CAN CAUSE UNINTENDED EQUIPMENT OPERA
TION
z
Use cables with insulated shielded jackets for analog Input/Output, fast
Input/Output and communication signals.
z
Ground shielded cables for analog Input/Output, fast Input/Output and
communication signals at a single point
1
.
z
Always comply with local wiring requirements regarding grounding of shielded
cable.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
WARNING
UNINTENDED EQUIPMENT OPERATION
When connecting DIN rails, connect the DIN rails to functional ground (FE).
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Содержание LT series
Страница 1: ... 7 70 70 DUGZDUH 0DQXDO ...
Страница 10: ...10 ...
Страница 12: ...12 ...
Страница 21: ...LT 4201TM 4301TM Hardware Manual 21 KC Markings ...
Страница 51: ...LT 4201TM 4301TM Hardware Manual 51 Run Mode Peripherals USB Type A Mini B Interface ...
Страница 57: ...LT 4201TM 4301TM Hardware Manual 57 Dimensions 3 5 Inches Display Module 5 7 Inches Display Module ...
Страница 58: ...LT Installation 58 Rear Module 3 5 Inches Display Module and Rear Module ...
Страница 59: ...LT 4201TM 4301TM Hardware Manual 59 5 7 Inches Display Module and Rear Module ...
Страница 88: ...LT Installation 88 ...
Страница 90: ...LT Unit 90 ...
Страница 110: ...LT 4201TM 4301TM Modular Type Analog 110 ...
Страница 114: ...Display Modules 114 ...
Страница 116: ...LT 116 ...
Страница 122: ...Communication Interface 122 ...
Страница 130: ......
Страница 136: ...Specifications 136 LT 4201TM 4301TM Modular Type Analog Internal Circuit Terminal Blocks see page 100 ...
Страница 138: ...Specifications 138 ...
Страница 142: ...Maintenance 142 ...