Defrost Function - LU-VE Emeritus LU1W Manual De Usuario

MODBUS MODBUS
Parameter Name and
Register Register
Description
Base 0 Base 1
PF12
Ventilation cut-off in
0x07B0 1969 evaporation mode
PF13
Regulation temp.
differential for overspeed
start-up in evaporation
0x07B1 1970 mode
PF14
Regulation temp.
differential for over-speed
deactivation in
0x07B2 1971 evaporation mode
5.2.2 Neutral zone adjustment
In the case of neutral zone setting, parameter PF11 will be the neutral zone width. The modulated speed will move to
the maximum when the evaporation temperature drops below the set-point minus the neutral zone (PF10-PF11), and
to the minimum when the evaporation temperature goes beyond the set-point plus the neutral zone (PF10 + PF11
For evaporation there is also the fast response band according to parameters PR08 and PR09. The regulation
parameters listed in section 4.2.2 Incremental Neutral Zone are also valid.
5.3
In evaporation mode, the coil defrost function is enabled by means of DI5 digital input. Parameter PH36 enables DI5,
while parameter PH37 determines the activation logic (N.O. → closed contact = defrost activation). During defrosting,
ventilation is stopped for the time during which the DI5 control will be active plus an additional time interval equal to
parameter PF24. The defrost in progress indication is displayed via the icon on the home page, and via MODBUS to the
ui_defON log.
PARAMETER
NAME
PH36 Enable DI5 defrost
Logic DI5 defrost
PH37 N.O. = normally open contact
NC = normally closed contact
PF24 Fans stop time from end of defrost
MODBUS Registers
MODBUS MODBUS
Parameter Name and
Register Register
Description
Base 0 Base 1
PH36
0x081F 2080 Enable DI5 defrost
LU1W - User Manual
Data Type and Notes
[unit of measure as set by
PH02, default °C]
- short int
[unit of measure as set by
PH02, default °C]
- unsigned short int
[unit of measure as set by
PH02, default °C]
- unsigned short int

Defrost function

DESCRIPTION
Data Type and Notes
0 = disabled,
1 = enabled
- unsigned short int
Default
value
25.0
10.0
5.0
DEFAULT MIN
VALUE VALUE
No No
N.O. N.O.
60 0
Default
value
0
59
Decimal
min Max
positions
-30.0 104.0
0.0 18.0
0.0 18.0
MAX
UM
VALUE
Yes -
-
N.C.
sec
9999
Decimal
Min Max
positions
0 1
REV.1.1 – 07/11/2017 - ENG
MODBUS
Register
Type
0.0 holding
0.0 holding
0.0 holding
.
)
MENU
ADVANCED →
VARIOUS
ADVANCED →
VARIOUS
ADVANCED →
VENTILATION
MODBUS
Register
Type
0 holding