概念
I/O Wiring
The I/O wiring recommendations provide guidance on what type of wires should be used for the different I/O modules and the AS-B onboard I/O, how to perform grounding, and how to connect different external devices to the inputs and outputs. Always use the recommended cables and wires.
For the I/O modules, most of the wiring is made to the terminal base, and can be done before the electronics module is installed.
For the AS-B onboard I/O, the wiring is made to the removable terminal blocks, and can be done before AS-B is installed on the DIN rail.
警告
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意外设备操作 Disconnect the mains supply before wiring. Some relay output terminals, I/O modules, or terminal bases may carry lethal voltages. 不遵守这些说明将导致死亡、严重伤害或设备损坏。 |
Shielded Wires
For digital inputs and outputs, you can use shielded or unshielded wire. Unshielded wires are usually sufficient.
For analog inputs and outputs, you can use shielded or unshielded wire. Shielded wires are recommended if the wiring is placed in a noisy electrical environment. Connect the shield to ground only at a RET terminal.
If the wiring is placed in a noisy electrical environment, shielded wires are recommended for RTD-DI-16 I/O modules and AS-B onboard I/Os that have the following external connections:
RTD temperature input
RTD resistive input
Resistive input
Grounding and Power
It is important to perform the grounding correctly for the following reasons:
To design a safe system that is not harmed by minor connection errors.
To design a system that works well and is resistant to EMI.
To minimize the effects of ground currents that can cause unstable measurements.
有关更多信息，请参阅 Grounding and Power .
External Device Connections
There are many different kinds of external devices from different vendors that can be connected to a SmartStruxure solution.
有关更多信息，请参阅 External Device Connections .
Wiring
Grounding and Power
External Device Connections