8.9.2 Capacitor Modules KCM (X8)
KCM modules (KOLLMORGEN Capacitor Modules) absorb energy gen
-
erated by the motor when it is operating in generator mode. Normally,
this energy is dissipated as waste via brake resistors. KCM modules,
however, feed the energy they have 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 in spite of power failure: If the power supply fails, the module provides
the servo amplifier 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.
The KCM modules can be connected to S3xx0 devices (mains supply voltage 400/480V).
Information for mounting, installation and setup can be found in the KCM Instructions
Manual.
Technical Data of KCM Modules
Typ DIM KCM-S200 KCM-P200 KCM-E200 KCM-E400
Storage capacity
Ws 1600 2000 2000 4000
Rated supply voltage
V= max 850 VDC
Peak supply voltage
V= max 950 VDC (30s in 6min)
Power
kW 18
Protection class
IP20
Inception voltage
V= evaluated 470 VDC - -
Dimensions (HxWxD)
mm 300 x 100 x 201
Weight
kg 6.9 6.9 4.1 6.2
Dimension drawings and order i nformations see regional accessories manual.
DANGER
High DC voltage up to 900 V!
There is a danger of serious personal injury or death by electrical shock
or electrical arcing. It can take over an hour for the modules to
self-discharge.
l
Switch off (disconnect) the line voltage. You must only work on the
connections when the system is disconnected.
l
Check the state of charge with a measuring device that is suitable for
a DC voltage of up to 1,000 V.
l
When measuring a voltage of over 50 V between the DC+/DC- termi-
nals or to ground, wait some minutes and measure again or discharge
the modules as described in the KCM instructions manual.
62 S300 Instructions Manual
Electrical installation 02/2017 Kollmorgen