Signal Interfaces - Siemens SINAMICS S120 System Manual

Commissioning
7.5 Commissioning example of an infeed with dynamic grid support for a power grid
7.5.8

Signal interfaces

Description
The following signals are required by the drive unit for operation and/or provided for
monitoring purposes.
Signals transferred to the drive unit
This involves a list of typical signals for communication with the higher-level control system.
Table 7- 12 Signals transferred to the drive unit
Parameter Drive Object
p0840[0] INFEED
p5501 INFEED
p3511 INFEED
p3611 INFEED
p5480 INFEED
p5541 INFEED
100
Signal
BI: ON/OFF1
Sets the signal source for control word 1 bit 0 (ON/OFF1).
BI: Dynamic grid support activation
1 signal: Activates dynamic grid support.
0 Signal: Deactivates dynamic grid support.
CI: Infeed DC link voltage supplementary setpoint
Signal input for control signal of the higher-level external
MPP controller
CI: Infeed reactive current supplementary setpoint
Reactive current setpoint for operation with p5501 = 0
Transformer magnetization mode
0 = deactivated
1 = Normal operation
Notice:
When magnetization is deactivated, the circuit-breaker is
controlled independently of the operating state of any
transformer that may be present.
This can cause an overload of the line or system compo-
nents, or may also lead to damage if a transformer is pre-
sent.
Use of an external independent synchronization monitor is
recommended.
BI: Grid monitoring activation
Signal source to activate grid monitoring
1 signal: Activates grid monitoring.
0 Signal: Deactivates grid monitoring
Type
Bit
Bit
Unsigned32 /
FloatingPoint32
Unsigned32 /
FloatingPoint32
Integer, 16-bit
Unsigned32 /
Binary
System Manual, 04/2015, A5E03347436A
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Grid infeed