Dynamic Servo Control (Dsc); Profidrive Communication - Siemens SINAMICS S120 System Manual

Drive functions
5.3 Closed-loop velocity control
5.3.3

Dynamic Servo Control (DSC)

The DSC (dynamic servo control) function is supported, allowing higher P gain settings in the
position controller. The function is implemented in the same way as for an electrical drive. It
is also activated via the control system (in the same way as for an electrical drive).
5.3.4

PROFIdrive communication

PROFIdrive communication between the control and SINAMICS HLA is realized using
PROFIdrive telegram 166.
Structure of telegram 166
Telegram 166 is a manufacturer-specific (proprietary) telegram for HLA, and transfers two
encoder channels and HLA supplementary signals as user data. It is structured as follows:
Output data
Signal
PZD1 STW1
PZD2 NSOLL_B
PZD3
PZD4 STW2
PZD5 MOMRED
PZD6 G1_STW
PZD7 G2_STW
PZD8 XERR
PZD9
PZD10 KPC
PZD11
PZD12 G1_MP
PZD13
PZD14 G1_MP_ZSW
PZD15 –
PZD16 –
PZD17 –
PZD18 –
PZD19 –
PZD20 –
156
Meaning
Control word 1
Velocity setpoint B
Control word 2
Torque reduction
Encoder 1 control word
Encoder 2 control word
Position deviation
Position controller gain factor
Reference value machine position
for piston calibration
Status machine position for piston
calibration
–
–
–
–
–
–
Input data
Signal Meaning
ZSW1 Status word 1
NIST_B Velocity actual value B
ZSW2 Status word 2
MELDW Message word
G1_ZSW Encoder 1 status word
G1_XIST1 Encoder 1 position actual value
1
G1_XIST2 Encoder 1 position actual value
2
G2_ZSW Encoder 2 status word
G2_XIST1 Encoder 2 position actual value
1
G2_XIST2 Encoder 2 position actual value
2
VA_VALVELIFT Valve spool value
VA_TORQUE Force actual value
VA_POWER Active power
VA_PRESSURE_A Cylinder pressure A
VA_PRESSURE_B Cylinder pressure B
System Manual, 04/2015, 6SL3097-4BA00-0BP1
Hydraulic Drive