Siemens 6SL3210-1SE31-0AA0 [128/318] Braking resistors

Siemens 6SL3210-1SB11-0AA0 [128/318] Braking resistors
DC link components
4.1 Braking resistors
Manual
128 Manual, 01/2011, 6SL3097-4AC10-0BP2
Connect the thermoswitch to a Control Unit
Connect the thermoswitch to a free digital input of the Control Unit. If the braking resistor
overheats, the Power Module is disconnected from the power supply. Then, the digital input
must be assigned to enable deactivation using an OFF2 command.
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Figure 4-1 Connecting the thermoswitch on the braking resistor to a Control Unit
Connect the thermoswitch to a contactor
Establish the power supply to the Power Modules through a contactor which can then shut
down the power supply when the resistor overheats. The thermoswitch is connected in
series with the coil feeder cable for the line contactor. The contacts of the thermoswitch
switch close again as soon as the temperature of the braking resistor has fallen below the
selected value.
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Figure 4-2 Connecting the thermoswitch on the braking resistor to a contactor

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