Monitoring The Temperature Of The Braking Resistor - Siemens SINAMICS G120C Operating Instructions Manual

Wiring the terminal strip to ensure EMC
● If you use shielded cables, you must connect the shield to the mounting plate of the
control cabinet or to the shield contact of the inverter over a large surface area and highly
conductively.
See also:EMC installation guideline
(http://support.automation.siemens.com/WW/view/en/60612658)
● Use the shield connection plate of the inverter as strain relief.
4.8.10

Monitoring the temperature of the braking resistor

((Danger to life due to fire spreading because of an unsuitable or improperly 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 4-19
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.
SINAMICS G120C converter
Operating Instructions, 07/2015, FW V4.7 SP3, A5E34263257B AC
WARNING
Example: Temperature monitoring of the braking resistor via digital input DI 3 on the
Control Unit
Installing
4.8 Connecting the inverter
81