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

VRF Smart Gateway Installation Guide
Product
Network and Communications > Gateways and Routers > VRF Smart Gateway
Document type
Installation Guide
Document number
Part No. 24-10143-1183
Document revision
F
Revision date
2020-04-23

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

–

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

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

–

26

SF-SPD

Actual Supply Fan Speed

MI

Status

Low

Medium

High

–

–

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

Clean

Dirty

–

–

–

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

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

Table 3. IDU Fan Speed

State Value

State String

1

Low

2

Med

3

High

4

Auto

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

Table 4. 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

Heat

Cool

Auto

7

SYSTEM-S

System Status

MI

Status

Several Values (See the Following Tables for Multi-State Information)

8

HX-STATE

Heat Exchanger State

MI

Status

Several Values (See the Following Tables for Multi-State Information)

9

INV-STATE

Inverter State

MI

Status

Several Values (See the Following Tables for Multi-State Information)

10

FAN-STATE

Fan Controller State

MI

Status

Several Values (See the Following Tables for Multi-State Information)

11

INV-HRS

Inverter Compressor 1 Runtime

AI

Value

0 Hours to 655,350 Hours

12

COMP-HRS

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

COMP2-A

Compressor 2 Current

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

COMP2TOP-T

Compressor 2 Top Temperature

AI

Value

0°C to 99°C (32°F to 210°F)

26

PROT-CODE

Protection Code

MI

Status

Several Values (See the Following Tables for Multi-State Information)

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

–

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

Table 5. ODU System Mode

State Value

State String

1

Heat

2

Cool

3

Auto

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

Table 6. ODU System Status

State Value

State String

1

Thermo off

2

Pump down

3

SW on start

4

Thermo on start

5

After defrost

6

Start control 1

7

Start control 2

8

Normal

9

Oil return

10

Defrost ready 1

11

Defrost ready 2

12

Differential pressure control

13

Defrost

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

Table 7. ODU Heat Exchanger Status

State Value

State String

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 8. ODU Inverter and Fan Status

State Value

State String

1

Normal stop

2

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

12

MPU reset

13

Earth fault voltage

14

Phase loss

16

Driving prohibited area

17

Fan controller retry

18

Control abnormality

21

Loss of synchronism

24

Normal acceleration

25

Normal deceleration

26

Constant speed

27

Overload after the acceleration

28

Overload after the deceleration

29

Overload after constant speed

30

Power supply unbalance

31

Power supply phase loss

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

Table 9. ODU Protection Code

State Value

State String

1

Pressure ratio

2

Pd rise prevention

3

Current protection

4

INV module temp rise prevent

5

Compressor top overheat prevent

6

Ps drop or rise prevention

9

Pd drop prevention

10

Current demand

13

Ps rise prevention
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.
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.