VRF LONWORKS
Operation Manual

Model Numbers
MGW-LONCS
IMPORTANT NOTE:
Please read this manual carefully before installing or operating your air conditioning unit.

Installation Diagram

1. Product Dimensions
2. Installation Diagram
   The product uses the rail-type installation method: first secure the rail in the packing carton to the position where the product will be installed, and then fasten the spring of the gateway on the rail.

Specifications

Input power voltage: 24V AC ;
Operating ambient temperature of modules: -10°C to 50°C;
Operating ambient humidity of modules: RH 25% to RH 90%.

LonWorks Gateway Wiring

The LonWorks gateway has one set of XYE communication ports, which can be connected to one XYE bus: up to 32 IDUs (address range: 0-31), and 32 ODUs (8 refrigeration systems, address range: 00-31).
The LonWorks gateway has one LON bus port, with the channel type TP/FT-10, and it is connected to the LonWorks BAS network using a free topology twisted pair.
The communication distance of the LON bus and the XYE bus is 800 meters in theory, but this is affected by the actual installation environment and other factors, so the actual communication distance may vary according to circumstances.
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Functions of LonWorks Gateway

The LonWorks gateway is embedded with a LonWorks function module that supports the LonTalk protocol. The LonWorks gateway can transform 485 communication protocol into a standard LonTalk protocol, thus achieving integration between the central air conditioning system and LonWorks’ BAS.

LonWorks Communication Objects of LonWorks Gateway

1. Communication Objects
   The new LonWorks gateway supports a total of 512 objects which can be connected to 32 IDUs and 32 ODUs. The specific parameters are shown in the following table.

2. IDU LonWorks Objects
   2.1 Output Class Variable (Readable)
   Output class variables are readable variables read by the LonWorks gateway from an IDU.

1. Operating mode
   Variable name: nvo_Op_Mode
   Parameter definition
   Variable format:

In the variable format, values other than the mode are not defined, and 0 is always displayed.
When the IDU is offline, the value of the variable is 0.
Note: M represents the IDU address, nvo_Op_Mode_1 represents the operating mode of IDU #0, and so on. Of these, nvo_Op_Mode _1 to nvo_Op_Mode _16 of the sub0 main board represent the operating modes of IDUs #0-15, and nvo_Op_Mode _17 to nvo_Op_Mode _32 of the sub1 main board represent the operating modes of IDUs #16-31.
2) Operating fan speed
Variable name: nvo_Fan_Speed
Parameter definition:

When the IDU is offline, the value of the variable is 0.
Note: M represents the IDU address, nvo_Fan_Speed _1 represents the operating fan speed of IDU #0, and so on. Of these, nvo_Fan_Speed _1 to nvo_Fan_Speed _16 of the sub0 main board represent the operating fan speeds of IDUs #0-15, and  nvo_Fan_Speed _17 to nvo_Fan_Speed
_32 of the sub1 main board represent the operating fan speeds of IDUs #16-31.
3) Set temperature
Variable name: nvo_Temp_Set
Parameter definition: indicates the set temperature/automatic mode cooling set temperature/hydraulic module heating water temperature. For example, 17-80 indicates 17℃ to 80℃.
When the IDU is offline, the value of the variable is 0.
4) Heating temperature
Variable name: nvo_Heating_Set
Parameter definition: indicates the automatic heating temperature/hydraulic module heating temperature. For example, 17-80 indicates 17°C to 80°C.
When the IDU is offline, the value of the variable is 0.
5) Room temperature (hydraulic module water tank temperature)
Variable name: nvo_Room_Set
Parameter definition: indicates the room temperature/hydraulic module water tank temperature. For example, -25-105°C indicates -25°C to +105°C.
When the IDU is offline, the value of the variable is 0.
6) Water outlet temperature (hydraulic module)
Variable name: nvo_Water_Set
Parameter definition: indicates the water outlet temperature (hydraulic module). For example,
-25-105°C indicates -25°C to +105°C.
When the IDU is offline, the value of the variable is 0.
7) IDU error
Variable name: nvo_Fault_Code
Parameter definition: indicates the high/low byte of an error code.
When the IDU is offline, the value of the variable is 0.
Refer to the following list for error codes:
0: No error
1-20: A0-AF, AH, AL, AP, AU
21-40: b0-bF, bH, bL, bP, bU
41-60: C0-CF, CH, CL, CP, CU
61-80: E0-EF, EH, EL, EP, EU
81-100: F0-FF, FH, FL, FP, FU
101-120: H0-HF, HH, HL, HP, HU
121-140: L0-LF, LH, LL, LP, LU
141-160: J0-JF, JH, JL, JP, JU
161-180: n0-nF, nH, nL, nP, nU
181-200: P0-PF, PH, PL, PP, PU
201-220: r0-rF, rH, rL, rP, rU
221-240: t0-tF, tH, tL, tP, Tu
241-260: U0-UF, UH, UL, UP, UU
Others: reserved
The error displayed on certain models may not be consistent with the unit’s actual error. In these cases, refer to the error on the unit. For the meaning of a specific error code, see the explanation provided in the service manual.
Error codes 121-140 are only used for the debugging function. Codes 141-240 indicate a reserved error, and 241-255 indicate reserved byte.

2.2 Input Class Variable (Writable)
There are four kinds of LonWorks objects in the IDU, which can be used by the host of the
LonWorks BAS.

1. Setting the mode
   Variable name: nvi_Op_Mode
   Parameter definition:

Note: M represents the IDU address, nvi_Op_Mode _1 represents the mode setting of IDU #0, and so on. Of these, nvi_Op_Mode _1 to nvi_Op_Mode _16 of the main board represent the mode settings of IDUs #0-15, and nvi_Op_Mode _17 to nvi_Op_Mode _32 of the sub main board represent the mode settings of IDUs

16-32.

By default, the mode setting is processed as mode + boot. If the upper computer sends a value that is not defined, mode setting is not performed by default.
2) Setting the fan speed
Variable name: nvi_Fan_Speed
Parameter definition:

Note: M represents the IDU address, nvi_Fan_Speed_1 represents the fan speed setting of IDU #0, and so on. Of these, nvi_Fan_Speed _1 to nvi_Fan_Speed_16 of the sub0 main board represent the fan speed settings of IDUs #0-15 IDUs, and nvi_Fan_Speed _16 to nvi_Fan_Speed_32 of the sub1 main board represent the fan speed settings of IDUs #16-31.
If the upper computer sends a value that is not defined, the fan speed setting is not performed by default.
If nvi_Op_Mode_M selects the Off or Dry mode, the set values of nvi_Fan_Speed_M are invalid.
If nvi_Op_Mode_M selects the Heating mode, the IDU may not be able to respond to medium/high speed commands due to the cold air protection function.

3. Setting the temperature
   Set temperature/automatic mode cooling set temperature/hydraulic module heating water temperature(Common IDU: 17°C to 30°C; high-temperature hydraulic module: 25°C to 80°C)
   Variable name: nvi_TempSet_M
   Parameter definition:

Note: M represents the IDU address, nvi_TempSet _1 represents the temperature setting of IDU #0, and so on. Of these, nvi_TempSet _1 to nvi_TempSet _16 of the sub0 main board represent the temperature settings of IDUs #0-15, and nvi_TempSet _16 to nvi_TempSet _32 of the sub1 main board represent the temperature settings of IDUs #16-31.
When the upper computer sends a value other than the defined values, the minimum temperature is implemented if the value is below the minimum value, while the maximum temperature is implemented if the value is higher than the maximum temperature.
If the upper computer sends a temperature value with decimal places, only the integer is used. For example, 67.68°C is sent as 67°C.
If nvi_TempSet _M selects the Off or Fan mode, the set values of nvi_TempSet _M are invalid.

4. Setting the heating temperature
   Automatic heating temperature/hydraulic module heating temperature (Common IDU: 17°C to 30°C; high-temperature hydraulic module: 25°C to 80°C)
   Variable name: nvi_Heating_Set_M
   Parameter definition:

Temperature (Celsius)| Value – LonMaker| Temperature (Celsius)| Value – LonMaker
---|---|---|---
17| 17| 25| 25
18| 18| 26| 26
19| 19| 27| 27
20| 20| 28| 28
21| 21| 29| 29
22| 22| 30| 30
23| 23| …| …
24| 24| 80| 80

Note: M represents the IDU address, nvi_Heating_Set _1 represents the temperature setting of IDU #0, and so on. Of these, nvi_Heating_Set _1 to nvi_Heating_Set _16 of the sub0 main board represent the temperature settings of IDUs #0-15, and nvi_Heating_Set _16 to nvi_Heating_Set _32 of the sub1 main board represent the temperature settings of IDUs #16-31.
When the upper computer sends a value other than the defined values, the minimum temperature is implemented if the value is below the minimum value, while the maximum temperature is implemented if the value is higher than the maximum temperature.
If the upper computer sends a temperature value with decimal places, only the integer is used. For example, 67.68°C is sent as 67°C.
If nvi_TempSet _M selects the Off or Fan mode, the set values of nvi_TempSet _M are invalid.

2.3 IDU Information Output Class Variable (Readable) of Bus

1. Online status
   Variable name: nvo_Online_Stat
   Parameter definition: Each bit represents one IDU where “0” means the unit is offline, and “1” means the unit is online.
   Notes: nvo_Online_Stat of the sub0 main board represents the online status of IDUs #0-15, and nvo_Online_Stat of the sub1 main board represents the online status of IDUs #16-31.

2. Operating status
   Variable name: nvo_Op_Stat
   Parameter definition: Each bit represents one IDU where “0” means the unit is OFF, and “1” means the unit is ON.
   Notes: nvo_Op_Stat of the sub0 main board represents the operating status of IDUs #0-15, and nvo_Op_Stat of the sub1 main board represents the operating status of IDUs #16-31.

3. Error status
   Variable name: nvo_Fault_Stat
   Parameter definition: Each bit represents one IDU where “0” means the unit has no error, and “1” means the unit has an error.
   Notes: nvo_Fault_Stat of the sub0 main board represents the error status of IDUs #0-15, and nvo_Fault_Stat of the sub1 main board represents the error status of IDUs #16-31.

2.4 IDU Group Input Class Variable (Writeable)

1. Setting group control power-off Variable name: nvi_Group Control
   Parameter definition:

If the upper computer sends other values, the LonWorks gateway will not process them.
If the upper computer sends the variables of the sub0 main board, it will only send the group control power-off command to the IDU connected to the main board. If the upper computer sends the variables of the sub1 main board, it will only send the group control power-off command to the IDU connected to the sub main board.

ODU LonWorks Objects

3.1 Output Class Variable (Readable)
There is only one LonWorks object in the ODU, which can be used by the host of the LonWorks BAS.

1. ODU error codes
   Variable name: nvo_Fault_Code1
   Parameter definition:
   0: no error
   1–20: A0–AF, AH, AL, AP, AU
   21–40: b0–bF, bH, bL, bP, bU
   41–60: C0–CF, CH, CL, CP, CU
   61–80: E0–EF, EH, EL, EP, EU
   81–100: F0–FF, FH, FL, FP, FU
   101–120: H0–HF, HH, HL, HP, HU
   121–140: L0–LF, LH, LL, LP, LU
   141–160: J0–JF, JH, JL, JP, JU
   161–180: n0–nF, nH, nL, nP, nU
   181–200: P0–PF, PH, PL, PP, PU
   201–220: r0–rF, rH, rL, rP, rU
   221–240: t0–tF, tH, tL, tP, tU
   241–260: U0–UF, UH, UL, UP, UU

Others: reserved
For the meaning of a specific error code, see the explanation provided in the service manual.
When the ODU is offline, the value of the variable is 0.
Note: M represents the ODU address, nvo_Fault_Code1_1 represents the error code of ODU #0, and so on. Of these, nvo_Fault_Code1_1 to nvo_Fault_Code1_16 of the sub0 main board represent the
error codes of ODUs #0-15, and nvo_Fault_Code1_1 to nvo_Fault_Code1_32 of the sub1 main board represent the error codes of ODUs #16-31.

3.2 ODU Information Output Class Variable of Bus

1. Online status
   Variable name: nvo_Online_Stat1
   Parameter definition: Each bit represents one ODU where “0” means the unit is offline, and “1” means the unit is online.
   Notes: nvo_Online_Stat1 of the sub0 main board represents the online status of ODUs #0-15, and nvo_Online_Stat1 of the sub1 main board represents the online status of ODUs #16-31.

2. Operating status
   Variable name: nvo_Op_Stat1
   Parameter definition: Each bit represents one ODU where “0” means the unit is OFF, and “1” means the unit is ON.
   Notes: nvo_Op_Stat1 of the sub0 main board represents the operating status of ODUs #0-15, and nvo_Op_Stat1 of the sub1 main board represents the operating status of ODUs #16-31.

3. Error status
   Variable name: nvo_Fault_Stat1
   Parameter definition: Each bit represents one ODU where “0” means the unit has no error, and “1” means the unit has an error.
   Notes: nvo_Fault_Stat1 of the sub0 main board represents the error status of ODUs #0-15, and nvo_Fault_Stat1 of the sub1 main board represents the error status of ODUs #16-31.

Other LonWorks Objects

4.1 Version Information Output Class Variable
Variable name: nvo_Version
Parameter definition: displays the version of the current LON module.
4.2 Gateway ID Output Class Variable
Variable name: nvo_Gateway_Id
Parameter definition: outputs the network variable nvo_Gateway_Id to display the ID (1 or 2) of the current gateway.
ID 1: manages IDU/ODU #0-15.
ID 2: manages IDU/ODU #16-31.

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©Copyright 2023 Actron Engineering Pty Limited ABN 34 002767240. ®Registered Trade Marks of Actron Engineering Pty Limited. ActronAir is constantly seeking ways to improve the design of its products, therefore specifications are subject to change without notice.
Operation Manual – VRF LONWORKS
Document: 9590-3036-01 Ver. 1 230818

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