Siemens RDG200KN Basic Documentation page 86

Functions
4
Fan control
Fan control with On/Off
heating/cooling control
Reference table with
On/Off control
1-speed/3-speed fan
Manual operation
DC 0...10 V fan
86 | 150
In applications with On/Off control:
1. The switching point for low fan speed is synchronized to the heating/cooling
output. P353 (switching point fan speed low) is not relevant.
2. The maximum switching range of the fan (XpH
switching differential (SDH/SDC) via a reference table.
Heating/cooling
1- or 3-speed fan
DC 0...10 V fan
T [°C] Room temperature
w Room temperature setpoint
Q Fan speed
Y Control command "Valve"
SDH Switching differential
"Heating" (P051)
SDC Switching differential
"Cooling" (P053)
SDH/SDC [K] 0.5
XpH /XpC [K] 2
Fan Fan
The thermostat can control a 1- or 3-speed fan (selected via P351). A 1-speed fan
is connected to terminal Q1, and a 3-speed fan to terminals Q1, Q2 and Q3.
Fan speed I = Min. fan speed selectable via P357
Fan speed II = Medium fan speed selectable via P358
/XpC
Fan
X
dz
XpH
Fan
XpC
Fan
Fan_max
Fan_med
Fan_min
1.0 1.5 2.0 2.5
3 4 5 6
) is defined by the
Fan
Dead zone (P055)
Switching range for fan
"Heating" (Table)
Switching range for fan
"Cooling" (Table)
Fan 3-speed switching point
high (P355)
Fan 3-speed switching point
med (P354)
Max. DC 0...10 V fan
speed (P359 for heating &
P360 for cooling)
Med. DC 0...10 V fan
speed (P358)
Min. DC 0...10 V fan
speed (P357)
3.0 3.5 4.0 >4.5
7 8 9 10
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