Function Diagrams And Parameters - Siemens Sinamics S120 Function Manual

Infeed
1.3 Basic Infeed
Vdc control with Basic Line Modules
If several Motor Modules are supplied from a non-regenerative infeed unit (e.g. a Basic Line
Module), the Vdc_max control may only be activated for that Motor Module whose drive has
the nominal highest moment of inertia of all connected drives.
For the other Motor Modules this function must be disabled or monitoring must be set.
If the Vdc_max control is active for several Motor Modules, then for an unfavorable
parameterization, the controllers can mutually influence one another negatively. The drives
can become unstable, individual drives can unintentionally accelerate.
• Activating the Vdc_max control:
• Inhibiting the Vdc_max control:
• Activating the Vdc_max monitoring function
1.3.1

Function diagrams and parameters

Function diagrams (see SINAMICS S120/S150 List Manual)
● 8720 Control word sequence control infeed
● 8726 Status word sequence control infeed
● 8732 Sequencer
● 8734 Missing enable signals, line contactor control
● 8750 Interface to the Basic Infeed power unit (control signals, actual values)
● 8760 Signals and monitoring functions (p3400.0 = 0)
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● r0002 Infeed operating display
● r0046 CO/BO: Missing enable signals
● p0210 Device supply voltage
● p0840 BI: ON/OFF1
40
DANGER
– Vector control: p1240 = 1 (factory setting)
– Servo control: p1240 = 1
– U/f control: p1280 = 1 (factory setting)
– Vector control: p1240 = 0
– Servo control: p1240 = 0 (factory setting)
– U/f control: p1280 = 0
– Vector control: p1240 = 4 or 6
– Servo control: p1240 = 4 or 6
– U/f control: p1280 = 4 or 6
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions