Siemens DF301 Basic Documentation page 40

ON/OFF control
Control sequence
ON/OFF output
Note:
Setting the sequence and the control outputs
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Siemens...........................RDF301, RDF301.50..., RDF600KN, RDF600KN/VB, RDF600KN/S
Smart Infrastructure
The diagrams below show the control sequence for 2-position.
Heating mode
(automatic changeover = heating or heating only)
Y
YE
Y1
w
D
1
w
0
½ SDH
½ SDH ½ SDH
Heating mode with manual changeover (P01 = 2)
Y
YE
1
w
0
½ SDH ½ SDH
· The diagrams only show the PI thermostat's proportional part.
· For the fan sequence see section 3.8.
· For better temperature control performance with 2-pos electric heater, we
suggest to set the switching differential heating (P30) to 1K.
Refer to section 3.4, section3.6.1, and section 3.7.
Cooling mode
(man. / auto. changeover = cooling or cooling only)
Y
1
T[°C]
0
½ SDH
½ SDH
(manual changeover = heating)
T[°C] Room temperature
W Room temperature setpoint
Y1 Control command "Valve" or
"Compressor"
YE Control command "Electric heater"
SDH Switching differential "Heating" (P30)
T[°C] SDC Switching differential "Cooling" (P31)
X Dead zone (P33)
dz
w Setpoint differential (P34)
D
YE
Y1
x
dz
w
½ SDC ½ SDC
½ SDH
Basic Documentation CE1P3171en
T[°C]
2020-02-21