Siemens RWF55.50A9 - Modulating Burner, Analog Output

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Building Technologies Division User Manual RWF55... CC1U7867en
Infrastructure & Cities Sector 5 Operating modes 05.11.2013
5.2.2 Modulating burner, analog output
Thermostat function active.
The RWF55 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.
A
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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.
Angular positioning is ensured via the analog output in the form of a standard signal.

Note!
The modulating controller must be configured.

Reference!
See chapter 8.4 Controller Cntr
A
rea (1)
A
rea (2)
A
rea (3)
Cooling controller
Output