Emerson PACMotion IC830DP 01207, Руководство по аксессуарам

Страница: 20 / 36

PACMotion™ Servos Accessories Guide Section 6
GFK-3173C December 2020
Capacitor Modules 14
Section 6: Capacitor Modules
KCM (Emerson Capacitor Modules) absorbs the energy generated by the motor when it is operating in
generator mode. Normally, this energy is dissipated as waste through brake resistors. KCM feeds the
energy stored back into the DC Bus link as and when it is required.
KCM-S
Saves energy: The energy stored in the capacitor module during regenerative braking is
available the next time acceleration happens.
The module’s inception voltage is
calculated automatically during the first load cycles.
KCM-P
Power despite power failure: If the power supply fails, the module provides the drive
with the stored energy that is required to bring the drive to a standstill in a controlled
manner (this only applies to the power supply voltage; battery-back the 24 V supply
separately).
KCM-E
Expansion module for both applications. Expansion modules are available in two
capacitance classes.
6.1 Important Notes
DANGER
DC Bus link terminals in servo systems carry high DC voltage of up to 900 V. Touching the terminals while
they are carrying voltage is extremely dangerous. Switch off (disconnect) the line voltage. You must only
work on the connections when the system is disconnected.
It can take over an hour for the modules to self-discharge. Check the state of charge with a measuring
device that is suitable for a DC voltage of up to 1,000 V. When measuring a voltage of over 60 V between
the DC+/DC- terminals or to ground, discharge the modules as described in the KCM Instructions
Manual.
NOTE: You must read the instructions manual for the drive/servomotor you are using in your application
and observe the safety instructions they contain before commencing mounting/installation work.
The wiring diagram and more important notes concerning wiring can be found in the KCM instructions
manual and the instructions manual of the used drive.