Technical information

IFD 258 · Edition 03.08
7
Application > Examples of application
Two-stage-controlled burner1.1.2
Control: ON/OFF or ON/HIGH/LOW/OFF
The burner BIO/BIC starts at low-fire rate. Once the normal
operating state is reached, the automatic burner control unit
for continuous operation IFD 258 will release control.
The PLC can now pulse the air solenoid valve VR..R in order to
control the capacity between high and low fire.
IFD 258
10
L1, N, PE
3
µC
BIO/
BIC
VR..R
11
8
9
13
14
4
5
GIK..B
VAS
PLC