BACnet Points - Metasys - Part No. 24-10143-1183 - SI-VRFCBN02-0Sx - Gateway/Router - VRF Smart Gateway - Release 1.2.1

VRF Smart Gateway Installation Guide

Product name
VRF Smart Gateway
Document type
Installation Guide
Document number
Part No. 24-10143-1183
Document revision
Rev. H
Version
Release 1.2.1
Revision date
2022-04-12

The following table lists the available BACnet points for the VRF indoor units (IDUs) as exposed by the VRF Smart Gateway.

Table 1. BACnet Points for VRF Indoor Units

BACnet Instance Number

Object Name

Object Description

Object Type

Contents of Information

4

UNIT-CAP

Indoor Unit Capacity Code

AI

Value

0 to 255

5

UNITEN-MODE

Unit Enable Mode

BO

Setting

Shutdown

Enable

6

SYSTEM-MODE

Command System Mode

MO

Setting

Cool

Dry

Fan

Heat

Auto

7

HtClg-REQ

Heat/Cool Required

BI

Status

False

True

8

SF-SPEED-C

Commanded Supply Fan Speed

MO

Setting

Low

Medium

High

Auto

High 2

9

EXPV-%

Expansion Valve Position

AI

Value

0.0% to 100.0%

10

LIQ-PIPE-T

Liquid Pipe Temperature

AI

Value

-50°C to 99°C (-58°F to 210°F)

11

GAS-PIPE-T

Gas Pipe Temperature

AI

Value

-50°C to 99°C (-58°F to 210°F)

12

RA-T

Return Air Temperature

AI

Value

-50°C to 99°C (-58°F to 210°F)

13

DA-T

Discharge Air Temperature

AI

Value

-50°C to 99°C (-58°F to 210°F)

14

DIFF-T

Coil Differential Temperature

AI

Value

-127°C to 127°C (-196°F to 260°F)

15

ZN-SP

Zone Temperature Setpoint

AO

Setting

As per IDU factory settings.

For example, Cool/Fan/Dry modes: 19°C to 30°C/66°F to 86°F)

Heat mode: 17°C to 30°C (62°F to 86°F)

16

RZN-T 1

Remote Zone Temperature

AI

Value

-50°C to 99°C (-58°F to 210°F)

17

COMP to REQ

Requested Compressor Speed

AI

Value

0 Hz to 255 Hz

18

UNIT-STOP-CODE

Unit Stop Code

AI

Value

0 to 255

For information about individual code numbers, refer to the VRF equipment service manual.

19

ALARM-CODE

Alarm Code

AI

Value

0 to 255

For information about individual code numbers, refer to the VRF equipment service manual.

20

RMT-OPT

Optional Room Thermostat

BI

Status

False

True

 

21

DEFROST-S

Defrost Status

BI

Status

False

True

22

REM-CON

Remote Control Connected

BI

Status

False

True

23

SF-S

Supply Fan Status

BI

Status

Off

On

24

ALARM-S

Unit Alarm Status

BI

Status

Normal

Alarm

25

SYSTEM-S

Actual System Mode

MI

Status

Cool

Dry

Fan

Heat

Stop

26

SF-SPD

Actual Supply Fan Speed

MI

Status

Stop

Low

Med

High

Soft

High 2

27

ZN-T 2

Zone Temperature

AI

Value

-50°C to 99°C (-58°F to 210°F)

28

FILT-S

Filter Status

BI

Status

Clean

Dirty

29

FILT-S-RESET

Filter Status Reset

BO

Setting

Off

Reset

 

30

UNIT-LO

Unit Lockout

BO

Setting

Unlock

Lock

31

FANCMD-LO

Fan Command Lockout

BO

Setting

Unlock

Lock

32

SYSMODE-LO

System Mode Lockout

BO

Setting

Unlock

Lock

33

ZNSP-LO

Zone Temperature Setpoint Lockout

BO

Setting

Unlock

Lock

34

FANSPD-LO

Fan Speed Lockout

BO

Setting

Unlock

Lock

35

LOUVER-LO

Louver Position Lockout

BO

Setting

Unlock

Lock

The following table lists the IDU multi-state values for SYSTEM-MODE and SYSTEM-S.

Table 2. IDU System Mode

State Value

State String

1

Cool

2

Dry

3

Fan

4

Heat

5

Auto

Table 3. IDU System-S

State Value

State String

1

Cool

2

Dry

3

Fan

4

Heat

5

Stop

The following table lists the IDU multi-state values for SF-SPEED-C and SF-SPD.

Table 4. IDU SF - Speed - C

State Value

State String

1

Low

2

Med

3

High

4

Auto

5

High2

Table 5. SF - SPD

State Value

State String

1

Stop

2

Low

3

Med

4

High

5

Soft

6

High2

The following table lists the available BACnet points for the VRF outdoor units (ODUs) as exposed by the VRF Smart Gateway.

Table 6. BACnet Points for VRF Outdoor Units

BACnet Instance Number

Object Name

Object Description

Object Type

Contents of Information

3

ALARM-CODE

Alarm Code

AI

Value

0 to 255

For information about individual code numbers, refer to the VRF equipment service manual.

6

SYSTEM-MODE

System Mode

MI

Status

None

Heat

Cool

Auto

7

SYSTEM-S

System Status

MI

Status

Refer to Table 8

8

HX-STATE

Heat Exchanger State

MI

Status

Refer to Table 9

9

INV-STATE

Inverter State

MI

Status

Refer to Table 10

10

FAN-STATE

Fan Controller State

MI

Status

Refer to Table 10

11

INV-HRS

Inverter Compressor 1 Runtime

AI

Value

0 Hours to 655,350 Hours

12

INV2-HRS

Inverter Compressor 2 Runtime

AI

Value

0 Hours to 655,350 Hours

13

INV-FREQ

Inverter Compressor Frequency

AI

Value

0 Hz to 255 Hz

14

TOTAL-FREQ

Total Frequency

AI

Value

0 Hz to 65,535 Hz

15

FAN-%

Outdoor Fan Output

AI

Value

0% to 100%

16

EXPV-%

Expansion Valve Position

AI

Value

0% to 100%

17

BYPEXPV-%

Bypass Expansion Valve Position

AI

Value

0% to 100%

18

DISCH-P

Discharge Pressure

AI

Value

0 psi to 3,698.5 psi

19

SUCT-P

Suction Pressure

AI

Value

0 psi to 369.8 psi

20

OA-T

Outside Air Temperature

AI

Value

-50°C to 99°C (-58°F to 210°F)

21

INV2ND-A

Inverter Compressor Secondary Current

AI

Value

0 A to 127.0 A

22

INVPRI-A

Inverter Compressor Primary Current

AI

Value

0 A to 127.0 A

23

INVPRI2-A

Inverter Compressor Top 2 Temperature

AI

Value

0 A to 127.0 A

24

INVTOP-T

Inverter Compressor Top Temperature

AI

Value

0°C to 99°C (32°F to 210°F)

25

INVTOP2-T

Inverter Compressor Top 2 Temperature

AI

Value

0°C to 99°C (32°F to 210°F)

26

PROT-CODE

Protection Code

MI

Status

Refer to Table 11

27

DEFROST-S

Defrost Status

BI

Status

Off

 

On

28

EMERGRUN-S

Emergency Run Status

BI

Status

Off

 

On

29

INV-S

Inverter Status

BI

Status

Stop

 

Run

30

FAN-S

Fan Status

BI

Status

Stop

 

Run

81

HX2-STATE

Heat Exchanger 2 State

MI

Value

Refer to Table 12

82

INV2-STATE

Inverter 2 State

MI

Value

Refer to Table 13

83

FAN2-STATE

Fan Controller 2 State

MI

Value

Refer to Table 14

84

INV2-FREQ

Inverter Compressor 2 Frequency

AI

Value

0 Hz ~ 255 Hz

85

EXPV2-%

Expansion Value Position 2

AI

Value

0 Hz ~ 100%

86

INV2ND2-A

Inverter Compressor Secondary Current

AI

Value

0 Hz ~ 127 A

87

INV2-S

Inverter 2 Status

BI

Status

Stop

Run

-

-

88

FAN2-S

Fan 2 Status

BI

Status

Stop

Run

-

-

The following table lists the ODU multi-state values for SYSTEM-MODE.

Table 7. ODU System Mode

State Value

State String

1

None

2

Heat

3

Cool

4

Auto

The following table lists the ODU multi-state values for SYSTEM-S.

Table 8. ODU System Status

State Value

State String

1

Stop

2

Thermo off

3

Pump down

4

SW on start

5

Thermo on start

6

After defrost

7

Start control 1

8

Start control 2

9

Normal

10

Oil return

11

Defrost ready 1

12

Defrost ready 2

13

Differential pressure control

14

Defrost

The following table lists the ODU multi-state values for HX-STATE.

Table 9. ODU Heat Exchanger Status

State Value

State String

0

None

1

Evaporator Mode Low Pressure

2

Condenser Mode High Pressure

3

Evaporator Mode

4

Condenser Mode

The following table lists the ODU multi-state values for INV-STATE and FAN-STATE.

Table 10. ODU Inverter and Fan Status

State Value

State String

1

Normal stop

2

IPM Fault

3

Over current

4

Fin temp

5

Electronic thermal

6

Undervoltage

7

Overvoltage

8

Communication error

9

Current sensor abnormality

10

Instantaneous power failure

11

Na0

12

MPU reset

13

Earth fault voltage

14

Phase loss

15

Na1

16

Reverse Driving

17

INV is inoperative

18

Control error

19

Detect 63H

20

63H detection circuit error

21

63H early return

22

Loss of synchronism

23

Setting error

24

Na2

25

Na3

26

Speed setting error

27

Constant speed

28

Normal acceleration

29

Normal deceleration

30

Acceleration after Overload

31

Deceleration after Overload

32

Constant speed after Overload

33

Na4

34

Na5

35

Power supply unbalance

36

Na6

37

Forced deceleration

38

Prohibit Increase

39

Reverse drive in

The following table lists the ODU multi-state values for PROT-CODE.

Table 11. ODU Protection Code

State Value

State String

1

None

2

Pressure Ratio Control

3

High Pressure Rise Protect

4

Inv Current Protect

5

Inv Fin Temp Rise Protect

6

Compressor Top Overheat Protect

7

Low Pressure Decrease Protect

8

Na1

9

Na2

10

High Pressure Decrease Protect

11

Demand Current Control

12

Na3

13

Na4

14

Low Pressure Rise Protect

15

Na5

16

Na6

17

Na7

18

Pressure Ratio Decrease Retry

19

Low Pressure Rise Retry

20

High Pressure Rise Retry

21

Overcurrent Retry

22

Vacuum Temp Increase Retry

23

Vacuum Temp Decrease Retry

24

Inverter Trip Retry

25

Retry Related to inverter

26

Na8

27

Na9

28

Na10

29

Na11

30

Na12

31

Na13

32

Na14

33

Na15

34

Na16

35

Na17

36

Na18

37

Na19

38

Na20

39

High Pressure Decrease Retry

The following table lists the ODU custom enum values for Heat Exchanger 2 Status.

Table 12. ODU Heat Exchanger 2 Status
MetasysEnum Value MetasysEnum String

1

None

2

Evaporator Mode Low Pressure

3

Condenser Mode High Pressure

4

Evaporator Mode

5

Condenser Mode

The following table lists the ODU custum enum values for Inverter 2 status.

Table 13. ODU Inverter 2 Status
MetasysEnum Value MetasysEnum String

1

Normal stop

2

IPM Fault

3

Over current

4

Fin temp

5

Electronic thermal

6

Undervoltage

7

Overvoltage

8

Communication error

9

Current sensor abnormality

10

Instantaneous power failure

11

Na0

12

MPU reset

13

Earth fault voltage

14

Phase loss

15

Na1

16

Reverse Driving

17

INV is inoperative

18

Control error

19

Detect 63H

20

63H detection circuit error

21

63H early return

22

Loss of synchronism

23

Setting error

24

Na2

25

Na3

26

Speed setting error

27

Constant speed

28

Normal acceleration

29

Normal deceleration

30

Acceleration after Overload

31

Deceleration after Overload

32

Constant speed after Overload

33

Na4

34

Na5

35

Power supply unbalance

36

Na6

37

Forced deceleration

38

Prohibit Increase

39

Reverse drive in

The following table lists the ODU custom enum values for FAN 2 status.

Table 14. ODU FAN 2 State
MetasysEnum Value MetasysEnum String
1 Normal stop
2 IPM Fault
3 Over current
4 Fin temp
5 Electronic thermal
6 Undervoltage
7 Overvoltage
8 Communication error
9 Current sensor abnormality
10 Instantaneous power failure
11 Na0
12 MPU reset
13 Earth fault voltage
14 Phase loss
15 Na1
16 Reverse Driving
17 INV is inoperative
18 Control error
19 Detect 63H
20 63H detection circuit error
21 63H early return
22 Loss of synchronism
23 Setting error
24 Na2
25 Na3
26 Speed setting error
27 Constant speed
28 Normal acceleration
29 Normal deceleration
30 Acceleration after Overload
31 Deceleration after Overload
32 Constant speed after Overload
33 Na4
34 Na5
35 Power supply unbalance
36 Na6
37 Forced deceleration
38 Prohibit Increase
39 Reverse drive in

The following table lists the IDU points used for Lockout commands and their meaning

Table 15. IDU points used for Lockout
IDU point on Metasys Function
FANCMD-LO For prohibiting unit On/Off setting from the remote controller
FANSPD-LO For prohibiting fan speed setting from the remote controller
SYSMODE-LO For prohibiting mode setting from the remote controller
ZNSP-LO For prohibiting temperature set point setting from the remote controller
LOUVER-LO For prohibiting the louver setting from the remote controller

UNIT-LO

For prohibiting all the above settings from the remote controller

1 RZN-T is the temperature reading from the Remote Controller, if one is connected to the IDU. If no Remote Controller is connected to the IDU, this value is marked Unreliable and has a reading such as -65 degF. Therefore, if no Remote Controller is connected, you can delete this point from the BAS or not map it in. RZN-T will be the temperature reading at the remote controller is configured to be the input or source of room temperature. (During commissioning the zone can be configured to control to the remote controller thermistor or the inlet/return air thermistor).
2 ZN-T is the temperature reading from the inlet temperature of the IDU. It is the same reading as RA-T (return air temperature). This temperature reading is always available under normal operating conditions.