Siemens CU240B-2 Operating Instructions

4.5.9 Connecting the temperature contact of the braking resistor
WARNING
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.
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Figure 4-34 Example: Temperature monitoring of the braking resistor via digital input DI 3 on the
Control Unit
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.
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Installing
4.5 Connecting the interfaces for the inverter control
Converter with the CU230P-2 Control Units
136 Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English