AVK24ALON
Globe valve actuator, communicative, modulating,
AC/DC 24 V, 2000 N
www.belimo.com
AVK24ALON
• en-gb • 2013-04-03 • Subject to modification
6
Functional profile according to LONMARK®
Individual room control solutions can be implemented with the thermostat object LONMARK® #8060. An LNS plug-in is available for
configuring the controller parameters.
nviSetPoint
SNVT_temp_p
nvoHeatOutput
SNVT_lev_percent
nvoCoolOutput
SNVT_lev_percent
nvoSpaceTemp
SNVT_temp_p
nviSpaceTemp
SNVT_temp_p
nviHeatCoolOut
SNVT_lev_percent
nviOccCmd
SNVT_occupancy
nviEffectSetpt
SNVT_temp_p
nviEnergyHoldOff
SNVT_switch
nviSetptOffset
SNVT_temp_p
nviDewpointAlarm
SNVT_switch
nviSenOccCmd
SNVT_occupancy
nvoUnitStatus
SNVT_HVAC_Status
Thermostat Object #8060
Configuration Properties
SCPTobjMajVer (167)
SCPTobjMinVer (168)
SCPTmaxRcvTime (48)
SCPTmaxSendTime (49)
SCPTbypassTime (34)
SCPTsetPnts (60)
UCPTpiConfig (5)
UCPTsensitivity (4)
Thermostat Object #8060
nviSetPoint: SNVT_temp_p
Setpoint specification for the controller from the higher-level system
or the room control unit. If this variable is not linked, then the local
setpoints of the controller object apply (can be adjusted via plug-in).
The setpoint specification from the higher-level system influences
the setting on the controller as follows:
Example: Comfort setpoint for heating = 21°C and Comfort setpoint
for cooling = 23°C. The median point between heating and cooling
is thus 22°C. Now, if the external setpoint (nviSetPoint ) is 23°C,
then the heating setpoint will shift to 22°C and the cooling set point
to 24°C. The setpoints for Pre-Comfort heating and cooling will also
be shifted accordingly.
nviSpaceTemp: SNVT_temp_p
Room temperature from external room sensor. It is imperative that
this variable be linked; typically, it is linked with the variable of the
sensor object.
nviOccCmd
: SNVT_occupancy
Occupancy specification from the command centre (for the function,
see the table entitled «Functions Inputs Occupancy» next page).
nviEnergyHoldOff
: SNVT_switch
In the case of active EnergyHoldOff, the controller will be set to the
Building Protection setpoints.
nviSetPtOffset: SNVT_temp_p
Shifting of the room control unit. If the nviSetPoint is linked, then
this input has an influence on the variable value of nviSetPoint, i.e.
it corrects it. Otherwise, the Comfort and Pre-Comfort setpoints for
heating and cooling will be adjusted directly by the amount of the
shift (compare example with nviSetPoint).
nviDewpointAlarm: SNVT_switch
In the case of active DewpointAlarm, the controller will be set to the
Building Protection setpoints. The cooling sequence is deactivated.
nviSenOccCmd: SNVT_occupancy
Occupancy specification from the local occupancy switch (for the
function, see the table entitled «Functions Inputs Occupancy» next
page).
nvoHeatOutput
: SNVT_lev_percent
Control signal for heating.
nvoCoolOutput
: SNVT_lev_percent
Control signal for cooling.
nvoSpaceTemp: SNVT_temp_p
Displays the room temperature of the nviSpaceTemp. If
nviSpaceTemp is not linked, then the variable will display the value
0x7FFF.
nvoUnitStatus: SNVT_HVAC_Status
Displays the operating mode of the controller (in accordance with
Functional Profile #8060).
nvoHeatCoolOut
: SNVT_lev_percent
Depicts the heating and cooling sequence for controlling the 6-way
characterised control valves (see illustration, next page).
This outlet runs parallel to the nvoCoolOutput or the nvoHeatOutput,
respectively.
Cooling = 33 … 0%
Valve closed 33 … 66%
Heating = 66 … 100%
nvoEffectSetpt: SNVT_temp_p
Shows the actual setpoint of the controller.
Note
A restart is necessary after accessing
network variables for the purpose of rewriting
them or after deleting links in order to
initialise the variables.
