Intesis
TM
KNX
– Mitsubishi Heavy Industries AC
User’s Manual r1.2 eng
© HMS Industrial Networks S.L.U - All rights reserved
This information is subject to change without notice
URL https://www.intesis.com
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x in “
Indoor Unit
xxx”) is the reference that will be used later on (in tab “Signals”)
to refer to this AC indoor unit. You can also change the description name of the
Indoor Unit and its address to facilitate integration tasks using
Add
and
Name
text boxes.
2.
Add:
Enter here the desired Indoor Unit address.
3.
Name:
Enter here the desired descriptive Indoor Unit name (optional).
4.
KNX Datapoint type for HVAC Mode communication object:
Select the
desired codification so the Mode object matches your integration needs.
5.
Gateway version:
Selection of the
Intesis
TM
KNX
–
Mitsubishi Heavy Industries
gateway you are setting up (
128AC
for
INKNXMHI128O000,
48AC
for
INKNXMHI048O000
).
6.
Timeout response:
Maximum amount of time permitted before activating the
Communication Error signal. It is expressed in milliseconds (ms) and ranges can
vary from 2000 ms to 10000 ms.
7.
Delay interframe:
Maximum amount of time permitted between End Of
Transmission (EOT) and a new frame. It is expressed in milliseconds (ms) and
ranges can vary from 500 ms to 3000 ms.
8.
Monitoring cadence:
Cadence of monitoring and subscription. It is expressed in
seconds (s) and ranges can vary from 60 s to 600 s.
9.
Virtual ambient temperature and setpoint:
Meant to be enabled when you
want the temperature provided by a KNX sensor to be the reference ambient
temperature for the air conditioner. Then, the following formula applies for
calculation of real
Control_
Setpoint Temperature
sent to the AC unit:
As an example, consider the following situation:
User wants:
19ºC
(“
KNX Setp. Temp
.
”)
User sensor (a KNX sensor) reads:
21ºC
(“
KNX Amb Temp
.
”)
Ambient temp. read by MHI system is:
24ºC
(“
AC Ret. Temp
”)
In this example, the final setpoint temperature that INKNXMHI048O000/128 will
send out to the indoor unit (shown in “
Setp. Temp
.
”) will become 24ºC –
(21ºC -
19ºC) =
22ºC
. This is the setpoint that will actually be requested to MHI unit.
This formula will be applied as soon as the
Control_ Setpoint Temperature
and
Control_ Ambient Temperature
objects are written at least once from the KNX
installation. After that, they are kept always consistent.
Note that this formula will always drive the AC indoor unit demand in the
right
direction, regardless of the operation mode (Heat, Cool or Auto). Due to the use
of this functionality, temperature showed in the KNX device and in the MHI remote
controller (in case it exist) may differ.
“AC Setp. Temp” = “AC Ret. Temp”
-
(“KNX Amb
.
Temp.”
-
“KNX Setp. Temp”)
▪
AC Setp. Temp: AC indoor unit setpoint temperature
▪
AC Ret. Temp: AC indoor unit return temperature
▪
KNX Amb. Temp.: Ambient temperature provided from KNX
▪
KNX Setp. Temp: Setpoint temperature provided from KNX
