Siemens SINAMICS S120 Function Manual page 46

Infeed
3.2 Basic Infeed
Description
The Basic Infeed open-loop control can be used to switch on/off the Basic Line Module. The
Basic Line Module is an unregulated infeed unit without regenerative feedback capability.
The open-loop control firmware for the Basic Line Module is on the assigned Control Unit. The
Basic Line Module and Control Unit communicate via DRIVE-CLiQ.
Features
● For Basic Line Modules in Chassis and Booksize formats
● Unregulated DC link voltage
● Control of external braking resistors with 20 kW and 40 kW Basic Line Modules (with
temperature monitoring)
Commissioning the BLM
The rated line voltage (p0210) must be parameterized during commissioning.
For the 20 kW and 40 kW Basic Line Modules Booksize, the temperature switch of the external
braking resistor must be connected to X21 on the Basic Line Module. If a braking resistor has
not been connected for 20 kW and 40 kW Basic Line Modules Booksize, the Braking Module
must be deactivated via p3680 = 1.
An optional Braking Module can be externally mounted on the Basic Line Module Chassis. A
braking resistor must then be connected to the Braking Module.
Restrictions for Basic Line Modules
Unexpected motion of individual drives
If several Motor Modules are supplied from one infeed unit, then if the V
incorrectly parameterized, individual drives can accelerate in an uncontrolled fashion, which
can lead to death or severe injury.
● Only activate the V
● Inhibit this function for all other Motor Modules, or set this function to monitoring only.
If several Motor Modules are supplied from a non-regenerative infeed unit (e.g. a Basic Line
Module), or for power failure or overload (for SLM / ALM), the V
activated for a Motor Module whose drive should have a high moment of inertia. For the other
Motor Modules, this function must be disabled or monitoring must be set.
If the V
effects on each other in the case of unfavorable parameter assignment. The drives may
become unstable and individual drives may unintentionally accelerate.
44
WARNING
dc_max
of inertia.
control is active for multiple Motor Modules, then the controllers may have negative
dc_max
control for the Motor Module whose drive has the highest moment
dc_max
control may only be
dc_max
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
control is
Drive functions