ECKELMANN VS 3015 CT, Инструкция по эксплуатации, Страница: 108 / 219

Firmware V1.41 V1 08.11.2022 108/219
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5.12.14 Accumulator fill level monitoring
The maximum liquid level of the accumulator is monitored by a refrigerant level sensor connected to digital
input 4 (terminals 56/57) of the SIOX ejector. If this is reached, an alarm is signalled with the message 248
"Max Acc. Level" and the superheat is increased. At the same time, the liquid ejectors continue to be operated
to empty the accumulator.
5.12.15 Oil level monitoring
The oil level of the pack is monitored by a level sensor connected to digital input 5 (terminals 58/59) of the
SIOX ejector. If the minimum level is undercut, an alarm is signalled with the message 248 "Oil-Shortage" and
the liquid ejectors are deactivated in order to reduce the oil requirement.
5.13 Setpoint Switching
It is possible to set a second (alternative) setpoint set of parameters, for example for day / night operation, for
the low pressure regulation. The setpoint switching can be activated using the internal week timer (parameter
"
Setp. toggle ", menu 4) or using a digital input (terminals 88/89) of the controller. The polarity of the input signal
can be set using the parameter " signal setvalue ", see menu 3-1 (set to "High-aktiv" at the factory).
When setpoint switching is activated, the following parameters in the controller are changed over:
Temperature setpoints
Neutral zone
Control constant
Switching times
Humidity shift
Gas cooler control maximum speed
5.14 Ambient Data for Setpoint Switching
The factors used for the setpoint switching (menu 3-1)
room temperature (shift of t
0,
, parameter Room temp .)
outdoor temperature (shift of the gas cooler outlet temperature t
G
, parameter Outdoor temp. )
humidity (shift of t
0
, parameter Humidity )
can either be provided using the sensors connected to the pack controller or received via the CAN bus from
another pack controller and determine the behaviour of the controller.
It can be set using the parameters
Room temp. , Outdoor temp . and Humidity whether sensors directly
connected to the controller are present. If any of these parameters is set to No, the additional parameter
"KnNrUmgeb.Dat " is shown on the operating screen.
Here, as required, the CAN bus address (node number) of the pack controller can be entered, from which the
desired ambient data will be obtained,
e.g. "1" for the CAN bus address 101".
5.15 Disabling refrigeration points
In the event of any fault of the compressor pack, the pack controller can send a consumer lockout via the CAN
bus to all associated consumers. Associated consumers are case controllers where the node address of the
pack controller has been programmed in the configuration of the controller. The consumer lockout is sent to all
associated consumers if no compressor or no refrigeration capacity is available.
If no ambient data should be received via the CAN bus, the parameter KnNrUmgeb.Dat must be set to
"–".
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