ECKELMANN VS 3015 C, Инструкция по эксплуатации

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t
0_max
= maximum t
0
setpoint
t
0_min
= minimum t
0
setpoint
t
r_max
= maximum room temperature for setpoint shift
t
r_min
= minimum room temperature for setpoint shift
t
0_max
, t
0_min
, t
r_min
and t
r_max
can be configured.
Setpoint shift - demand-dependent via consumer
The t
0
setpoint is calculated in accordance with the refrigeration needs of the refrigeration points. Here, in the
case of controllers with electronic expansion valves, the opening degree of the refrigeration point expansion
valves for standard controllers with thermostatic expansion valves is determined according to information
equivalent to the opening degree in the UA 300/UA 400 controller.
If a configurable maximum load level (parameter Max.LoadLevel menu 3-2-1-2) is exceeded on at least one of
the refrigeration points associated with the pack, the suction pressure is reduced.
Conversely, if all the associated refrigeration points for the pack have a lower load level than the configurable
minimum load level (parameter
Min.LoadLevel menu 3-2-1-2), the suction pressure is increased. The
adjustment of the suction pressure setpoint is performed within configurable limits (parameter to-Min., to-Max.
menus 3-2-1-3 / 3-2-1-4) using a configurable step size (parameter Increment menu 3-2- 1-2) for the to setpoint
increase; a configurable step size (parameter Decrement menu 3-2-1-2) for the to reduction and a configurable
updating interval (parameter Interval menu 3-2-1-2). If "--" is entered for the parameter Decrement the to
reduction is also performed with value set for Increment .
If the refrigeration of a case is subject to a forcibly actuated shutdown (defrost, external OFF etc.), the
associated case controller does not influence the to-adjustment. The same applies when the corresponding
control sensor (supply air/return air/room air temperature) on the case controller fails.
Setpoint shift via CAN bus
If the function to-shift via CAN bus is selected, the to-setpoint shift is performed via the CAN bus. This can be
implemented using a higher level E*LDS controller (e.g. GLT 3010).