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CE1P3076.en
Smart Infrastructure
2020-02-21
For better temperature control performance with 2-pos electrical heater, we
suggest to set the switching differential heating (P30) to 1K.
The diagram below shows the control sequence for continuous PI control.
Heating mode
(automatic changeover=heating or heating only)
Cooling mode
(man. /auto. changeover=cooling or cooling only)
Heating mode with manual changeover
(P01=2)
(manual changeover=heating)
T[°C] Room temperature
W
Room temperature setpoint
V1
Control command “Valve”
E1
Control command “electrical heater”
XpH Proportional band “Heating”
XpC Proportional band “Cooling”
X
dz
Dead zone
w
D
Setpoint differential
·
The diagrams only show the PI thermostat’s proportional part.
·
For the fan sequence see section 4.8.
Note
Control sequence
modulating output
Notes: