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of a gas cooler capacity stage. The following diagram shows the switching time calculation:
5.6.12 Setpoint increase tG
It is possible for the controller to enter a temperature offset t
G
-Offset N (menu 3-2-2-2) which is added to the
setpoint temperature t
G_Soll
when setpoint switching is active.
5.6.13 Protection and base load rotation of the fan motors
In order to prevent long standstill times, base load rotation can be activated using the parameter
BaseLoadRot.F
(menu 3-6). If base load rotation is activated, the following additional parameters are displayed:
1. On time cond.
You can select between 2 operating modes:
•
Fan protection
If the parameter
On time cond.
is set to
N
, fans that were switched off for longer than the time
Cycle time
F.
(menu 3-6) will be switched on for the duration of 20 seconds.
•
Runtime equalisation
If the value is set to
Y
, the switching sequence for the fans is changed. If a fan should be switched on,
the fan with the shortest operating time is switched on. If a fan should be switched off, the fan with the
longest operating time is switched off.
If the gas cooler outlet temperature is in the neutral zone after the time
Cycle time F.
(menu 3-6), after
expiry of this time, if available, the fan with the shortest operating time is switched on and the fan with
the longest operating time is switched off.
2.
Cycle time F.
A time can be entered, after which the previously described operating modes will be performed.
Содержание VS 3015 C
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