QUANTUM™ HD COMPRESSOR CONTROL PANEL
OPERATION
090.040-O (MAR 12)
Page 44
DESCRIPTION: If Condenser is enabled, this screen al-
lows the end user to enter and view the basic operating
parameters related to condenser digital operation. This
information is set using the Confi guration > Condenser
Control screen.
The following information is shown on this screen:
CONDENSER CONTROL
Enable – Selecting this button provides the fol-
lowing options:
Condenser Control Setpoint – This is the value
that the Condenser Control will attempt to main-
tain.
System Discharge Pressure – This shows the
actual System Discharge Pressure.
VFD Output - This is the current VSD output as
a percentage relative to the minimum and maxi-
mum VSD output settings.
[Module A - D Step Order] - The four different
output modules are enabled by putting a number
(1-4) into the Step Order setpoint boxes. These
determine the order that the modules are turned
on or off. If a Module has a 0 (zero) as its Step
Order setpoint, it is disabled from the control
process.
FAN SPEED CONTROL
The following setpoint boxes are provided:
Proportional Band – – The range over
which the PID control will be managing the
Variable Speed Fan (provided Integration
Time is not set to zero, in which case it will
be strictly proportional).
Integration Time - This setpoint controls
the infl uence that the Integral component
exerts on the PI Output value.
The following information is displayed
[High Limit] – The percentage of the
4-20mA signal which should be considered
maximum capacity (usually 100%).
[Low Limit] - – The percentage of the
4-20mA signal which should be considered
minimum capacity (usually 40%).
STEP CONTROL
[Step Up Deadband] and [Step Up Delay] –
When the System Discharge Pressure stays
above the combined values of the Condenser
Control Setpoint plus the Step Up Deadband for
the amount of time as set in the Step Up Delay,
the next module in the Step Order will turn on.
CONTROL SETPOINTS
Condenser Control
Condenser Control
ACCESSING:
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