36 • MultiFlex I/O Board Operator’s Guide
•
On Delay - The MultiFlex PAK requires
more compressor HP/AMPS, but PAK is cur-
rently waiting for the Step ON delay to
elapse before increasing capacity.
•
DeadBand - The suction pressure is within
the Suction Deadband. The PAK will con-
tinue operating at the current capacity.
•
Max Cap - Based on the current value of the
suction pressure, the PAK would activate
more HP/AMPS if more were available, but
it is operating at maximum capacity.
•
XDucer Fail - The suction pressure trans-
ducer input has failed.
•
Disch Trip - The discharge pressure has
exceeded the discharge trip setpoint, causing
the compressor group to shut down.
•
OutDB Delay - Due to the Suction Outer
Deadband feature, the PAK has skipped a
compressor stage change because it deter-
mined the suction pressure was returning to
within the Suction Deadband.
Cond.
The Condenser Mode field explains the
current state of the condenser fan control algo-
rithm in the MultiFlex PAK. There are seven
messages that may appear here:
•
OFF - All condenser fans are OFF, and the
discharge pressure/temperature is low
enough to not require any fans to be acti-
vated.
•
OFF Delay - The PAK is calling for fan
stages to deactivate, and PAK is waiting for
the OFF Delay time period to elapse before
deactivating the next fan stage.
•
ON Delay - The PAK is calling for fan stages
to activate, and PAK is waiting for the ON
Delay time period to elapse before activating
the next fan stage.
•
DeadBand - The TD is within the setpoint
deadband, and therefore the PAK is neither
activating nor deactivating any fan stages.
•
Max Cap - All condenser fans are ON, but
the TD is still above set point. In other
words, PAK would activate more fan stages
if more were available, but it is operating at
maximum capacity.
•
Quiet Max - Same as Max Cap (see above),
except Quiet Mode is currently active and
the PAK is operating the VS fan at the maxi-
mum speed allowed by the Quiet Mode %
setpoint.
•
Cond Spray - The condenser spray output is
currently ON.
Suct Float.
If the PAK is currently enabling suc-
tion float to occur, the display will show "ON" in
this field. Otherwise, if suction float is not
active, the display will show "OFF."
8.4. PAK Configuration
Screens
Some (but not all) of the configuration of the
MultiFlex PAK may be changed using the HHT.
HHT users may change setpoints, redefine input
and output type assignments, and override relays
or analog/digital outputs.
HHT Changes When PAK is Connected to E2
All changes to setpoints made by the HHT
are temporary if the PAK is connected to a par-
ent E2. Changes made in the HHT do not change
the configuration stored in the E2. When the
HHT is unplugged from the PAK, all changes
made by the HHT are overwritten by the E2,
including output overrides. If you wish to make
permanent changes to the MultiFlex PAK’s con-
figuration, you must make them through the E2
(or through a remote communication program
connected to the E2, such as UltraSite32).
HHT Changes When PAK is Stand-Alone
If the MultiFlex PAK is operating stand-
alone with no connection to an E2, the HHT is
the only method that may be used to change con-
figuration. When the HHT is unplugged from the
PAK, all changes to configuration will be saved.
Overrides made with the HHT, however, will be
cancelled when the HHT is unplugged.
Summary of Contents for MultiFlex PAK
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