Firmware V3.13
21.04.2021
61/466
5.7.14 Limiting the Opening Degree
An upper limit to the opening degree output by the case controller can be set using this function. This opening
degree is
never
greater than the maximum value set using the parameter Maximum OD (menu 6-2-7).
5.7.15 MOP function
The MOP point (Maximum Operating Pressure) is part of the superheat regulation and describes the
maximum permissible value of the evaporation temperature t0. If t0 be lower than the set MOP point then
normal superheat regulation is carried out. If t0 exceeds the MOP point then the opening degree of the E value
is reduced until it finally closes completely.
This behaviour is achieved by ”freezing” the temperature sensor R6, which simulates a small superheat to
the controller. Thus it is irrelevant how high the temperature at R6 rises as the superheat controller only sees
the maximum value R6' which it calculates from the set MOP + the superheat setpoint (Setp.SH). With
increasing to and ”frozen” R6, the superheat SH' (SH = R6 - t0) sinks and the opening degree of the valve is
reduced.
At the latest, once the minimum superheat has been reached (if active) the valve closes completely. MOP mode
functions both in CAN bus operation and stand-alone operation (to measure via R5 or the local pressure
transmitter).
ATTENTION
Damage to goods!
If the value is too low the case controller may no longer be able to reach the
preset temperature setpoint. This value should not be set too low.
Содержание Case Controller UA 4 E Series
Страница 23: ...Firmware V3 13 21 04 2021 23 466 For more details see chapter Operation UA 4xx E...
Страница 135: ...Firmware V3 13 21 04 2021 135 466 Exit the menu by tapping the ESC button twice...
Страница 157: ...Firmware V3 13 21 04 2021 157 466 Connection diagram UA 400 E CC One zode controller and two zone controller...
Страница 158: ...Firmware V3 13 21 04 2021 158 466 Anschlussbild UA 401 E CC One zode controller...
Страница 207: ...Firmware V3 13 21 04 2021 207 466...
Страница 216: ...Firmware V3 13 21 04 2021 216 466 SENSORS POS XXXXX Entry Default 5K3A1 Temperature range 0 100 C...
Страница 277: ...Firmware V3 13 21 04 2021 277 466...
Страница 364: ...Firmware V3 13 21 04 2021 364 466 MODE POS XXXXX Entry Default Fixed run time Enthalpy ctrl rtm...