Modulating Burner, Analog Output - Siemens RWF 50.2 Installation, Use And Maintenance Instructions

Only RWF50.3
Area (1)
Area (2)
A
Area (3)
Cooling controller

5.2.2 Modulating burner, analog output

Thermostat function active.
The RWF50.3 as a modulating controller provides control to the adjusted setpoint.
Angular positioning is ensured via the analog output in the form of a standard signal.
Figure 9: Control sequence of modulating burner, analog output
The controller behaves as described in chapter 5.2.1 Modulating burner, 3-position
output.
If the controller is set to cooling mode, the respective values HYS4 and HYS6 apply.
Starting from a high actual value, the controller now controls the connected cooling
equipment in low-fire operation. In high-fire operation, the cooling output is controlled
via relays K2 and K3 or the analog output. The response threshold (q) calculates
automatically (now in the reverse sense) the point from which the cooling output is to
be increased.
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