Product Manual Oria Thermostat
EAE KNX Oria Thermostat
Oria Thermostat PM R1.0
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“Status Operating Mode” is visible when “Status Comm Object Type” is “1 byte”. Values for different
operating modes;
0: Comfort Mode, 1: Night Mode, 2: Away Mode, 3: Protect Mode.
“Status Comfort”, “Status Night”, “Status Away” and “Status Protect” are visible when “Status Comm Object
Type” is “4 bits”. When “Status Comm Object Type” is “4 bits” and an operating mode switchover occurs a
“False (0)” telegram will be send from previous operating modes communication object.
For example; while in Night mode and “Enable Away Mode” telegram received,
Status Night -> False
Status Away -> True
Table27
4.4.3
Control Types
Thermostat uses 5 different control types; these are PI Continuous, PI PWM, On/Off, Fan Coil and Split.
Operation of every control type explained in the following chapters.
Control Type
Output Type
Fan
PI Continuous
PI
1 byte (%0…%100)
Disabled
PI PWM
PI
1 bit (On - Off)
Disabled
On/Off
On/Off
1 bit(On - Off)
Disabled
Fan Coil
PI
1 byte (%0…%100)
Enabled
Split
None
None
Enabled
Table 28
4.4.3.1
PI Continuous
Uses PI algorithm to calculate control signal and 1 byte (%0…%100) floating values as output, PI values should
be selected compatible with the room that wants to be controlled. Default values are given for an average
room and for different rooms PI values must be readjusted for better performance. As a general rule;
KP value: Changes the speed of the control and decreasing KP value increase the control speed. If given too
low might cause overshoot, and given too large cause control to operate too slow.
KI value: More inactive the system smaller KI value should be.
Note finding optimum values for a specific room might require some trial and error. Using default values as a
reference point and increase and decreasing these values according to the directions given above might
increase controller performance.
4.4.3.2
PI PWM
Uses PI algorithm as controller to calculate control signal and 1 bit value as output, since PI algorithm outputs 1
byte floating value PWM method used to realize this output as 1 bit. PWM (Pulse with Modulation) requires a
PWM cycle as period and uses control output to calculate duty cycle. For example, PWM cycle: 10 min, PI
output: %20, Then an “on” telegram will be send at the beginning of 10 min cycle and “off” telegram at
10*20/100 = 2 min. Note that PI values and PWM cycle should be selected appropriate to room. As a general
rule more inactive the system larger the PWM cycle should be.
