Line, Motor And Dc Link Connection; Protective Conductor - Siemens PM330 Hardware Installation Manual

4.2

Line, motor and DC link connection

Arrangement of the converter terminals, see Access to power and motor terminals
(Page 36).
For all connections, carefully observe EMC regulations, see EMC compliant connection
(Page 55).
4.2.1

Protective conductor

High leakage currents when the protective conductor is interrupted
The drive components conduct a high leakage current via the protective conductor.
Touching conductive parts when the protective conductor is interrupted can result in death
or serious injury.
• Dimension the protective conductor as stipulated in the appropriate regulations.
• Connect the protective conductor to the lower PE connections.
Dimensioning the protective conductor
Observe the local regulations for protective conductors subject to an increased leakage
current at the site of operation.
The minimum cross-section of all protective conductors routed in the control cabinet
depends on the cross-section of the line or motor feeder cable:
● Line or motor feeder cable ≤ 16 mm
⇒ Minimum cross-section of the protective conductor = cross-section of the line or motor
feeder cable
● 16 mm² < line or motor feeder cable ≤ 35 mm
⇒ Minimum cross-section of the protective conductor = 16 mm
● Line or motor feeder cable > 35 mm
⇒ Minimum cross-section of the protective conductor = ½ cross-section of the line or
motor feeder cable
Power Module PM330
Hardware Installation Manual, 12/2018, A5E32844552B AF
WARNING
4.2 Line, motor and DC link connection
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Connecting up, switching on
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