Connecting The Braking Resistor - Siemens SINAMICS G120P Operating Instructions Manual

Electrical installation

4.2 Connecting the braking resistor

4.2 Connecting the braking resistor
Danger to life through electric shock due to applied voltage and residual charge of the
DC link capacitors on the Braking Module
Contact with live connections on the Braking Module can result in death or serious injury.
• Only connect the Braking Module after the Power Module has been disconnected from
• Only connect the Braking Module after 5 minutes have elapsed. Measure the voltage
Risk of fire due to ground fault/short-circuit
Inadequate installation of the cables to the braking resistor can result in a ground
fault/short-circuit and place persons at risk as a result of the associated smoke and fire.
• Use the local installation regulations to avoid this fault.
• Protect the cables against mechanical damage.
• Also implement one of the following measures:
Fire hazard due to overheating when permissible connection cable lengths are exceeded
Excessively long Braking Module connection cables can cause components to overheat
with the associated risk of fire and smoke.
• The lengths of the Braking Module connection cables may not exceed 100 m.
Recommended connection cross-section: 35 mm².
16
DANGER
the power supply.
before starting work on the DCP and DCN DC link terminals.
WARNING
– Use cables with double insulation.
– Maintain adequate clearance, e.g. by using spacers.
– Lay the cables in separate cable ducts or conduits.
WARNING
Operating Instructions, 10/2016, A5E32845373B AD
Braking resistors