Siemens sinamics dcp Operating Instructions Manual page 236

Operation
8.9 Closed-loop control
Image 8-67
Voltage limitation
See function diagram 6812 in the SINAMICS DCP List Manual.
The SINAMICS DCP provides limitation functions for the protection of the battery and DC
link.
The limitation cases are:
● Protection of the battery against overcharging
● Protection of the battery against overdischarging
● DC link overvoltage
● DC link undervoltage
A voltage limitation pair can be parameterized for each of these four limitation cases.
● Voltage value for the start of the limitation (current reduction) and
● Final voltage (at which current = 0 is reached)
The internal resistance of the connected voltage sources is taken into account for the voltage
limitation. See parameters p55515, p55516, r55505, r55506, r55507, r55508.
Dynamic voltage limitation
See function diagram 6817 in the SINAMICS DCP List Manual.
The dynamic voltage limitation is a freely usable limitation for the voltages on sides 1 and 2.
It is also used for the "step-up" precharging mode.
Voltage control
See function diagram 6818 in the SINAMICS DCP List Manual.
The voltage controller controls either the voltage on side 1 or on side 2 to a definable
setpoint.
236
Limits for 120 kW devices
Operating Instructions, 05/2016, A5E34382853K
SINAMICS DCP