Connecting The Temperature Contact Of The Braking Resistor - Siemens SINAMICS G120 Operating Instructions Manual
Low voltage converters
built-in and wall mounting units with cu230p-2 control units
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Installing
4.5 Connecting the interfaces for the inverter control
4.5.9
Connecting the temperature contact of the braking resistor
Fire caused by an unsuitable or incorrectly installed braking resistor
Using an unsuitable or improperly installed braking resistor can cause fires and smoke to
develop. Fire and smoke development can cause severe personal injury or material damage.
● Only use braking resistors that are approved for the inverter.
● Install the braking resistor in accordance with regulations.
● Monitor the temperature of the braking resistor.
Procedure
Proceed as follows to monitor the braking resistor temperature:
1. Connect the temperature monitoring system of the braking resistor (terminals T1 and T2
on the braking resistor) to a free digital input on the inverter.
Figure 4-34
2. Define the function of the digital input used as an external fault with p2106.
As an example with temperature monitoring via digital input DI 3: p2106 = 722.3.
You have ensured that the temperature is monitored.
136
WARNING
Example: Temperature monitoring of the braking resistor via digital input DI 3 on the
Control Unit
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE
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