LU-VE Emeritus LU1W Manual De Usuario página 159

PARAMETER
NAME
Proportional bandwidth in
PR03
cooling/condensing
Percentage of bandwidth for
PR04 activation of first/only water
resource (end of dry regulation)
Percentage of bandwidth for
PR05 activation of second water
resource (spray+adiabatic panels)
MODBUS Registers
MODBUS MODBUS
Register Register Parameter Name and
Base 0 Base 1 Description
PR03
Proportional bandwidth in
0x077B 1916 cooling/condensing
PR04
Percentage of bandwidth
for activation of first/only
water resource (end of dry
0x077C 1917 regulation)
PR05
Percentage of bandwidth
for activation of second
water resource
0x077D 1918 (spray+adiabatic panels)
4.2.2 Incremental neutral zone
Neutral zone adjustment is particularly suitable for dry coolers or condensers for industrial applications, where it is
required to maintain a stable outlet temperature of process water, or a stable condensing pressure, with small
tolerances.
During neutral operation, the system varies the required resources when the adjustment temperature remains
outside the set-points +/- neutral zone (parameter PR03).
For the operation in dry cooler/condensing, the resource demand moves to the maximum (100%) when the regulation
temperature exceeds the set-point + neutral zone value, and decreases to the minimum (0%) when the temperature
drops to below the set-point threshold - neutral zone. The resource request is changed every PR07 seconds, and varies
by a percentage of PR06%.
An extra area is defined by an additional offset (parameter PR08), beyond which the rate of increase/decrease of the
percentage of resources used will be faster (parameter PR09).
LU1W - User Manual
DESCRIPTION
Data Type and Notes
[unit of measure as set by
PH02,
- unsigned short int
[%]
- unsigned short int
[%]
- unsigned short int
DEFAULT MIN
VALUE VALUE
10.0 1.0
60.00 1.00
75.00 PR04
Default
value
default °C]
10.0
60.00
75.00
36
MAX
UM
VALUE
40.0 °C USER → OPTIMIZAT.
PR05 % USER → OPTIMIZAT.
% USER → OPTIMIZAT.
100.00
Decimal
min Max positions
1.0 72.0
1.00 PR05
PR04 100.00
REV.1.1 – 07/11/2017 - ENG
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MODBUS
Register
Type
0.0 holding
0.00 holding
0.00 holding