Pack Controller - Danfoss ADAP-KOOL AKD 102 Operating Instructions Manual

®
ADAP-KOOL Drive AKD 102 High Power
22-76 Interval Between Starts
Range:
300 s* [0 - 3600 s]
22-77 Minimum Run Time
Range:
0 s* [0 - par. 22-76 s]
NB!
Does not work in pack controller mode.

25-00 Pack Controller

Option:
[0] * Disabled
[1] Enabled
NB!
This parameter can only be
25-06 Number of Compressors
Option:
[0] * 2 compressors
[1] 3 compressors
25-20 25-20 Neutral Zone [unit]
Range:
4.00* [0-9999.99]
Function:
Sets the time desired as minimum time between two starts. Any normal start command (Start/Jog/
Freeze) will be disregarded until the timer has expired.
Function:
Sets the time desired as minimum run time after a normal start command (Start/Jog/Freeze). Any
normal stop command will be disregarded until the set time has expired. The timer will start counting
following a normal start command (Start/Jog/Freeze).
The timer will be overridden by a Coast (Inverse) or an External Interlock command.
Function:
For operation of multiple devices (compressor) systems where capacity is adapted to actual load by
means of speed control combined with on/off control of the devices. For simplicity only compressor
systems are described.
The Pack Controller is not active. All built-in relays assigned to compressor motors in the Pack func-
tion will be de-energized. If a variable speed compressor is connected to the frequency converter
directly (not controlled by a built-in relay), this compressor will be controlled as a single compressor
system.
The Pack Controller is active and will stage/destage compressors according to load on the system.
Enabled [1], if parameter 28-00 Short Cycle Protection
Function:
The number of compressors connected to the Pack Controller including the variable speed com-
pressor. If the variable speed compressor is connected directly to the frequency converter and the
other fixed speed compressors (lag compressors) are controlled by the two built in relays, three
compressors can be controlled. If both the variable speed and fixed speed compressors are to be
controlled by built-in relays, only two compressors can be connected.
Fixed Lead Compressor
If , par. 25-05, is set to
speed compressor; both controlled by built in relay. If
Yes
[1]: one variable speed compressor and one fixed speed compressor controlled by built-in relay
3 Compressors
[1]: One lead compressor, see
compressors controlled by built-in relays.
Function:
Set the neutral zone (NZ) to accommodate normal system pressure fluctuations. In pack control
systems, to avoid frequent switching of fixed speed compressors, the desired system pressure is
typically kept within a zone rather than at a constant level.
The NZ is programmed in the same unit as selected in par. 20-12
places a zone above and below the set-point in which staging and destaging will not occur. For
MG.11.O1.02 - ADAP-KOOL ® is a registered Danfoss trademark
6 How to Programme the Frequency Converter
is set to Disabled [0].
No
[0]: one variable speed compressor and one fixed
Fixed Lead Compressor
Fixed Lead Compressor
, par. 25-05. Two fixed speed
Reference/Feedback Unit
6
, par. 25-05, is set to
.. It
93