ECKELMANN VS 3015 C, Инструкция по эксплуатации

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Setpoint shift via external analogue signal
If the to-adjustment via external signal has been selected (menu 3-2-1-2), the to setpoint shift is performed via
an external 0..10 volts signal. The 0..10 volts analogue input at the terminals 51/52 is used for the to-
adjustment.
If the external to-shift is active, then - in order to detect a measuring circuit fault - a minimal input voltage can be
specified using an offset. If the input signal falls below the specified offset value minus 2% for longer than 30
seconds, the error message "
M.err.ext.to-shift " is output. If the offset is set to zero, no message is output. The
default value for the signal is Prio. 2. If the to-shift via an external 0..10 Volt signal is active, the to-setpoint is
calculated using the following function:
(1)
to
set
: to-setpoint shifted by an external signal
to
max
: Maximum permissible to (from already available to-characteristic curve)
to
min
: Minimum permissible to (from already available to-characteristic curve)
U
ext
: External 0..10 V voltage signal
U
min
: Offset for the monitoring of a cable break
Display of the associated setpoints:
If the HRC setpoint shift is active, the t0 setpoint shift cannot be activated and therefore the entry
Ext. Signal is
not displayed in the selection list.
If the to-adjustment via
Ext. Signal is active, the HRC setpoint shift cannot be activated and therefore the
parameter " Setp.shift ." is not displayed in the HRC setpoints menu.
The parameters Max.LoadLevel, Min.LoadLevel , Increment and Interval in the to-adjustment menu are hidden if
the to-adjustment is performed via the room temperature, CAN bus or an external signal.
The parameter
Off.Ext.Sig. is only displayed if the to-adjustment is performed via the external signal.
Setpoint shift via humidity sensor
It can be set using the humid. adapt. parameter (menus 3-2-3 and 3-2-4) whether the t
0
setpoint should also be
adjusted depending on the air humidity. The signal for air humidity can be accepted either from the humidity
sensor or via the CAN bus from another pack controller (see chapter
Ambient data for the setpoint switching ).
As this input is also used for the HP setpoint shift in HRC mode, a to-shift via the external signal is only
possible when the HP setpoint shift is inactive. Conversely, an HP setpoint shift can only be activated
when the to-shift is not performed via an external signal.

In order to prevent large fluctuations in the to-setpoint, the change in the setpoint is delayed relative to
the external signal.

If a demand-dependent setpoint shift (menu 3-2-1-2) has been selected, this parameter is not active /
visible.
