Chassis; Motor Reactors; Description; Safety Instructions For Motor Reactors - Siemens S120 Manual

6.2

Chassis

6.2.1

Motor reactors

6.2.1.1

Description

Motor reactors reduce the voltage stress on the motor windings by reducing the voltage
gradients at the motor terminals that occur when motors are fed from drive converters. At the
same time, the capacitive charge/discharge currents that also occur on the output of the
Motor Module when long motor cables are used are reduced.
Motor reactors can be operated in the VECTOR and SERVO control modes.
6.2.1.2

Safety instructions for motor reactors

Danger to life if the fundamental safety instructions and residual risks are not observed
The non-observance of the fundamental safety instructions and residual risks stated in
Chapter 1 can result in accidents with severe injuries or death.
• Observe the fundamental safety instructions.
• Consider the residual risks for the risk evaluation.
Danger to life due to electric shock in the event of missing touch protection
Death or serious injury can result when live parts are touched.
• For the motor reactors, use touch protection according to IPXXA or corresponding to the
Danger of fire through overheating for insufficient ventilation clearances
Insufficient ventilation clearances can result in overheating with danger to persons as a
result of smoke and fire. Further, increased failures can occur and the service life of
units/systems shortened.
• It is essential that you maintain 100 mm ventilation clearances above and below the
AC Drive
Manual, (GH6), 04/2014, 6SL3097-4AL00-0BP4
WARNING
DANGER
local installation regulations.
WARNING
component.
Motor-side power components
6.2 Chassis
231