Connecting To Sinamics G115D I/O Variant; Grounding The Converter Housing; Connecting The External Braking Resistor - Siemens SINAMICS G115D Operating Instructions Manual

Wiring

4.15 Connecting to SINAMICS G115D I/O variant

4.15 Connecting to SINAMICS G115D I/O variant
The SINAMICS G115D I/O variant uses I/O terminals to realize converter control functions. For
more information on connecting the I/O terminals, refer to Section "Connecting the digital
inputs and outputs".
4.16

Grounding the converter housing

To ensure that the converter is properly grounded and protected, you MUST connect an
earthing cable to the converter housing.
• Connect the PE terminal on the converter housing to an appropriate grounding point of
the installation.
• Use a short wire connection.
• Clean the connection to the steel construction from paint or dirt.
• Use a UL-approved ring-type cable lug to terminate the earthing cable to ensure a good
physical connection which is resistant to accidental disconnection.
Wiring example of motor-mounted converter
Note: For the G115D Motor Mounted, use the PE terminal which is close to the motor drive
end (DE) to ground the converter housing.
Minimum cable cross-section: 4 mm
PE terminal tightening torque: 1.5 Nm (13.3 lbf.in)
4.17

Connecting the external braking resistor

Electric shock as a result of a residual charge in power components
After the power supply has been switched off, it takes up to 5 minutes until the capacitors in
the converter have discharged so that the residual charge is at a non-hazardous level.
Therefore, touching the converter immediately after powering off can result in electric
shock due to residual charge in the power components.
• Check the voltage at the converter connections before you connect the external braking
94
Connecting the digital inputs and outputs (Page 76)
WARNING
resistor.
Wiring example of wall-mounted converter
(AWG 10)
2
Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
SINAMICS G115D distributed drive