Power Output Control; Half-Wave Control - Siemens SIPLUS HCS Operating Instructions Manual

Functions

9.2 Power output control

9.2 Power output control
9.2.1

Half-wave control

Half-wave control can be parameterized for activating the heating elements. This
paramaterization is performed for each POM and applies to all channels of the POM.
Principle of half-wave control
The power outputs are controlled in half-waves: For each half-wave, the controller supplies
On/Off information to the triac and this switches as specified.
Image 9-1
The setpoints for controlling the power outputs lie within a value range of 0 % to 100 %
(reference value: 100 half-waves).
Depending on the specified setpoint, the power outputs are controlled with an equal number
of positive and negative half-waves (reference value: 200 half-waves).
To avoid excessively high inrush currents, the power outputs are switched on time-delayed.
See Switch on heating (Page 72).
70
Half-wave control example: 33 % and 66 %
Operating Instructions, 11/2015, A5E35452705A/002
SIPLUS HCS4300