Ventilation Control (All Configurations) - LU-VE Emeritus LU1W Manual De Usuario

PARAMETER
NAME
Master/Slave Control:
PG01 0 = Master
1 = Slave
Master control signal type:
PH20 0 = 0-10V
1 = 4..20mA
MODBUS Registers
MODBUS MODBUS
Register Register Parameter Name and
Base 0 Base 1 Description
PG01
0x0832 2099 Master/slave control
PH20
Control signal type from
0x0813 2068 master
4.3
In the ventilation zone, the fan speed is modulated from the minimum speed (parameter PF18) to the maximum
speed (parameter PF19) according to the set parameters: set-point, type of adjustment, amplitude PR03, presence of
wet resources and their respective activation percentage.
Parameter PF19 is limited in its maximum by parameter PF20, which is the maximum speed % (of the maximum RPM
speed set in the fan; see chapter 7 MODBUS MANAGEMENT) achievable in normal operation. In addition to limiting
the maximum speed in the ventilation modulation field (parameter PF19), parameter PF20 limits:
•
Fan speed (constant) during operation of adiabatic panels (parameter PF35)
•
Fan speed (constant) during spray operation (parameter PF36)
•
Fan speed (constant) during cleaning cycle (parameter PC04)
Setting a lower value of the PF20 parameter automatically changes the parameters PF19, PF35, PF36, PC04 if some of
them exceed the new value entered.
4.3.1 Over-speed and cut-off
In the absence of wet resources supply (for example, when the ambient temperature is below the adiabatic panel or
spray activation temperature), when the adjustment temperature reaches the set threshold (parameter PF08)
ventilation is forced to 100%, regardless of the maximum set speed (parameter PF19): the machine is positioned in an
"emergency" state and uses the over-speed feature to remedy it. This operation ends, returning the fan speed to the
maximum at normal operating conditions when the adjustment temperature falls below the pre-alarm threshold
(setpoint plus differential parameter PF09).
Minimum speed (parameter PF18) is maintained until the adjustment temperature goes below the pre-alarm return
threshold, parameter PF07 ventilation cut-off set-point.
LU1W - User Manual
DESCRIPTION
Data Type and Notes
0 = master, 1 = slave
- unsigned short int
0 = 0-10V, 1 = 4-20mA
- unsigned short int

Ventilation control (all configurations)

DEFAULT MIN
VALUE VALUE
Master Master
0-10V 0-10V
Default
value
0
0
40
MAX
UM
VALUE
Slave -
-
4-20mA
Decimal
min Max positions
0 1
0 1
REV.1.1 – 07/11/2017 - ENG
MENU
ADVANCED →
CONFIGURATION
ADVANCED →
VARIOUS
MODBUS
Register
Type
0 holding
0 holding