Table of Contents
Advertisement
9.3.3
Soft starting function
Operating principle
Soft starting can be parameterized for activating the channels in order to control loads with a
high inrush current. This parameterization is performed for each POM and applies to all
channels of the POM. Soft starting means that when switched on, the channels are
controlled with a fixed number of half waves with phase control before half-wave mode or
phase control mode is activated.
Figure 9-3
Note
The disturbances caused on the supply cables by the soft starting are to be filtered on the
line side. For suitable filters, see the note in the section Phase angle control (Page 108).
During a soft start, we distinguish between two procedures:
● The "defined soft start" (3 variants)
● The "adaptive soft start"
Defined soft start
The soft start occurs with a fixed number of half-waves. While with half-wave control, this
number is always constant (depending on the choice of variant), for phase control, the soft
start is already ended on reaching the setpoint.
SIPLUS HCS4300 PROFINET/PROFIBUS DP
Operating Instructions, 10/2019, A5E35452705A/005
Softstart ramp with resistive load
Functions
9.3 Power output control
109
Advertisement
Table of Contents
