Siemens SINAMICS S120 Equipment Manual page 138

Motor Modules
5.1 Description
Characteristics of the Motor Modules
● Version for 510 V DC to 750 V DC from 210 A to 1405 A
● Liquid cooling
● Short-circuit/ground-fault-proof
● Electronic rating plate
● Operating status and error status via LEDs
● DRIVE-CLiQ interface for communication with the Control Unit and/or other components
● Integration in system diagnostics
● An external 24 V DC supply is required to operate liquid-cooled Motor Modules.
The volumetric flow of the coolant is monitored by the software. If the volumetric flow is
continuously lower than the setpoint, an alarm (A5005) is first displayed. If this alarm
remains active continually for the next 5 minutes, a fault message (F30047) is activated
which shuts down the unit.
The fans for the internal electronic circuitry are only switched on when required.
The fans are switched on and off as a function of several factors (e.g. heat sink temperature,
ambient temperature, output current, duty cycle, ...) which means that fan operating cycles
cannot be calculated directly.
136
Version for 675 V DC to 1080 V DC from 100 A to 1270 A
in the drive line-up.
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1