Wiring
6.9 Wiring BaseUnits for motor starters
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
107
Requirements
● The supply voltages are switched off
● Observe the wiring rules
Interconnection of the F-DI input of BaseUnits BU-30-MS5, BU-30-MS6, BU-30-MS7
and BU-30-MS10 with surge filters
If your system requires overvoltage protection, you must interconnect the F-DI input of
the BaseUnits BU-30-MS5, BU-30-MS6, BU-30-MS7 and BU-30-MS10 with surge filters.
Please see "Electromagnetic Compatibility" in the technical specifications.
Required tools
Use the screwdriver "SZF 1-0.6x3.5" (for finely-stranded cables only).
Connecting conductors: Solid without end sleeve, stranded (stranded wire) with end sleeve
To connect a cable, proceed as follows:
1. Insulate the cables in accordance with the table in chapter "Electromagnetic compatibility
of fail-safe modules (Page 278)".
2. Only in the case of stranded conductors:
Crimp the cable with end sleeves.
3. Insert the cable into the push-in terminal as far as it will go.
4. Pull on the cable to ensure it is tight.
Connecting conductors: multi-wire (stranded), without end sleeve, unfinished
To connect a cable, proceed as follows:
1. Insulate the cables in accordance with the table in chapter "Wiring rules (Page 98)".
2. Press the screwdriver into the spring release.
3. Insert the conductor into the push-in terminal until it engages.
4. Pull the screwdriver out of the spring release.
5. Check whether or not the conductor is firmly connected by pulling on the cable.
Video sequence
At the following Internet link, you can see a video about connecting conductors: Wire
BaseUnits (http://support.automation.siemens.com/WW/view/en/95886218
)
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