Ingersoll Rand X8I Manual De Utilización página 35

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Pressure Control; Tables
S02 - P> Pressure Units
This parameter selects the display and operating pressure
units: The default setting for this parameter is PSI. The
values for this parameter are:
"PSI"
"BAR"
"kPA"
S02 - NC Number of Compressors
This parameter sets the number of compressors
connected to, and controlled by, the X8I. This value
must be set to match the system at commissioning. The
default setting for this parameter is 4. The values for this
parameter are:
"1" for 1 compressor
"2" for 2 compressors
"3" for 3 compressors
"4" for 4 compressors
To
"8" for 8 compressors
S02 - PM Maximum Pressure Alarm
This parameter sets the High pressure 'Fault' level. This
value remains active at all times and is the same for all
'Tables' . It should be set just below system pressure relief
value(s) and below the maximum system pressure rating
of all air system components. The default setting for this
parameter is 145. The values for this parameter are:
The highest value for the Maximum Pressure Alarm
setpoint = "The maximum range of the pressure
transducer used"
The lowest value for the Maximum Pressure Alarm
setpoint = "The highest value from any Table "PH
- Pressure High" Setpoint plus 2 times the "To
– Tolerance"
If PH in Table 1 (T01) is set for 100 PSI, and PH
in Table 2 (T02) is set for 110 and TO is set for
3.0 PSI, then the lowest Maximum Pressure
setpoint would be 116 PSI.
S02 - CF Stop Control Function
This parameter determines if the X8I maintains control of
the compressors when the X8I is stopped. The default
setting for this parameter is
Stop Control Function is disabled) The values for this
parameter are:
1
S02 - TO Tolerance
This parameter sets the pressure control 'Tolerance' band
setting. The Tolerance Band setting is a pressure band
above and below the Load and Unload pressure band.
This accommodates for an instance of abrupt and/or
significant increase or decrease in demand without
compromise to optimal energy efficient control. The X8I
incorporates a Rate of Change algorithm in the Tolerance
Band to determine when a compressor should be Loaded
or Unloaded. The default setting for this parameter is 3.0
PSI (.2 Bar) The values for this parameter are:
S02 - DA Damping
This parameter sets the pressure control 'Damping'
setting. Changing this parameter adjusts the time before
an additional compressor is loaded in accordance with
the urgency of the situation to increase air system
capacity further. The X8I has a dynamic reaction algorithm
that is pre-set by default to accommodate for the majority
of installation characteristics. If an increase or decrease in
the Tolerance band is insufficient, the reaction response
can be influenced by increasing or decreasing the
'Damping' factor. The default setting for this parameter is
1.0. The values for this parameter are: .1 TO 10
35
= Stop: return pressure control to the
compressors.
" " = Standby: maintain control and continouosly
hold compressors 'off load' .
"1.4 PSI (.1 Bar)" for the minimum Tolerance Band
"29.0 PSI (2 Bar)" for the maximum Tolerance Band
• If air system storage is generous, the rate of the
pressure change is slow, and/or demand fluctuations
are insignificant and gradual, then the 'Tolerance'
band can be decreased to improve pressure control
without compromise to optimum energy efficiency.
As the Tolerance Band is decreased, the Loading and
Unloading of compressors while in the band is more
rapid.
• If air system storage is inadequate, the rate of the
pressure change is fast, and/or demand fluctuations
are significantly large, the 'Tolerance' band can be
increased to maintain optimum energy efficiency,
and reduce over-reaction, during such transition
periods. As the Tolerance Band is increased, the
Loading and Unloading of compressors while in the
band is less rapid.
".1", the fastest Damping reaction time (10 times faster
than the default of 1.0)
"10.0", the slowest Damping reaction time (10 times
slower than the default of 1.0).
. (Represents the