Function description
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Connection cross-section: 0.2 mm² … 2.5 mm², tightening torque: 0.5 Nm (5 lb.in)
Use insulated end sleeves according to DIN 46228-4.
Terminals Remark
1 You may either connect an external 24 V supply or use the internal 24 V supply.
3 … 6 The function of the digital inputs is shown in the factory setting.
You can change the function of the digital inputs subsequently.
The digital inputs are low-active in the factory setting. If you do not use one of the digital inputs, you must
connect the digital input with 24 V.
8, 11, 12 The function of the digital outputs cannot be changed.
8 The digital output signals a fully charged DC link of the converter. A charged DC link is the prerequisite for the
"operation" converter state.
11, 12 A device to protect against overload and short-circuit is required for the power supply to the line contactor
control, e.g. a 4 A / 250 V fuse.
Connect the excitation coil of the line contactor to a surge suppressor, e.g. an RC element.
Figure 4-21 Terminal strip X9 with external 24 V supply
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Figure 4-22 Terminal strip X9 with internal 24 V supply
Wiring
4.2 Control interfaces
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC 127
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