OUMAN H23 - Page 13

13
Setting
Factory
setting
Range Explanation
--- TUNING VALUES----
P-area 200 2...600 °C Supply water temperature change at which the actuator runs the valve at 100%.
Eg. If the supply water temperature changes 10 °C and the P area is 200 °C the
position of the actuator changes 5 % (10/200 x 100 % = 5 %).
I-time 50 0 ... 300 s The deviation in the supply water temperature from the set value is corrected by
P amount in I time. For example, if deviation is 10°C, P-range is 200°C and I time
is 50 s, the motor will be run at 5 % for 50 seconds.
D-time
0 0 ... 10 s Regulation reaction speed up in the event of a
temperature change. Beware of constant waver!
--- ALARM SETTINGS ---
Supply water deviation alarm:
Max. deviation
from setting
10.0 2...100 °C Amount of dierence between measured supply water temperature and the
supply water temperature set by the controller that causes an alarm when the
deviation has continued for the return delay time. If the summer function is active,
the setting for deviation alarm is 2 x defined setting (with default setting it’s 2 x
10.0 °C = 20 °C).
Alarm delay 60 0...120 min The alarm goes o if the deviation has lasted for the set time.
Return water low limit alarm:
Alarm min limit 8.0 2...100 °C The return water low limit alarm and return water compensation is activated
when return water temperature has remained below the low limit for longer than
the allowed delay time. The exit delay for low limit alarm is 5 seconds. (see p. 14)
Alarm delay 10 0...120 min
--- MEASUREMENTS / BUS MEASUREMENTS ---
Outdoor temp.
measurement
In use Not in use,
In use,
In use (bus)
A outdoor temperature measurement can be read either
from bus or through UI11 or plug connector.
Room measurement Not in
use
Not in use,
In use,
In use (bus)
A room temperature measurement specific to H1 control
circuit can be read either from bus or through UI14.
--- ROOM COMPENSATION ---
Room compensation
ratio
Coecient used in applying the dierence between room measurement and
the room setting value to the supply water setting value. For example, if room
temperature is one degree below the setting value, supply water is raised by two
degrees. (1.0 °C x 2.0 = 2.0 °C).
Minimum limit The minimum limit defines how much the compensation
can decrease the supply water temperature.
Maximum limit The maximum limit defines how much the compensation
can increase the supply water temperature.
--- RETURN WATER COMPENSATION ---
Return water
compensation ratio
2.0 0 ... 10.0 If return water temperature falls below the setting value of the “Low limit alarm
for return water” supply water temperature is raised by the value: amount of the
deficit multiplied by the compensation ratio.
--- OTHER SETTINGS ---
Outdoor temperature
delay
2.0 0 ... 6.0 h Amount of slowing of outdoor temperature measurement (time
constant). Regulation of supply water is based on delayed measurement.
Room temp.
measurement delay
0.5 0 ... 6.0 h Amount of room temperature measurement delay (time constant).
Dierent buildings react to temperature changes at dierent rates. This setting
value can reduce the eect of the building on room regulation.
0...10
2.0
20.0
-20.0
-50...+50
-50...+50