Johnson Controls T9800 Series Service manual

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

Rev 1.4

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T9800 series BACnet MS/TP Networked Thermostat Controller

Technical Bulletin

Contents

Revision.............................................................................................................................................2

1. Introduction ..............................................................................................................................3

2. Product overview ......................................................................................................................3

3. Configuring MS/TP ....................................................................................................................4

3.1 Wiring the network .................................................................................................................4

3.2 End-of-Line termination..........................................................................................................4

3.3 Setting the network parameters .............................................................................................5

3.4 MS/TP controller mapping ......................................................................................................5

3.4.1 Preparation.......................................................................................................................5

3.4.2 Adding a Thermostat Controller.......................................................................................5

3.4.3 Adding BACnet MS/TP Points...........................................................................................5

4. MS/TP points.............................................................................................................................6

4.1 T9800 points list......................................................................................................................6

4.2 Points descriptions..................................................................................................................9

5 Output Mapping......................................................................................................................11

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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Revision

Author

Comments

1.0

Zheng Jinrong

Initialize the document.

1.1

Zheng Jinrong

Add output mapping.

1.2

Zheng Jinrong

Update output mapping for ECM and AHU app.

1.3

Zheng Jinrong

Update exposed objects

1.4

Zheng Jinrong

Value of MV objects

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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1. Introduction

This document describes how to configure the T9800 Series Thermostat Controllers for

BACnet MS/TP networked applications, including how to:

Connect to the MS/TP Bus and map a thermostat controller into a Network Automation

Engine (NAE).

Add a thermostat controller.

Add points.

Command and configure from an NAE.

2. Product overview

The T9800 series touch screen fan coil thermostat control the fan coil with local temperature to

get comfortable environment. Select the temperature scales and setpoints, the mode, and the

different values to control the Heating, Ventilating, and Air Conditioning (HVAC) system, maintain

the desired room temperature. The optional Occupied/Unoccupied feature saves energy.

T9800 provide different models for 2-pipes and 4-pipes application. The following table list the

T9800 models and their supported functions.

Table 1 T9800 model and function list

Type

Feature

T9800-

TF20-1JS0

T9800-

TF21-1JS0

T9800-

TB21-1JS0

Application

2-pipe heating and cooling

●

4-pipe heating and cooling

●

2-pipe 3-wire valve

●

2-pipe with floor heater

●

2-pipe with Tio2/ESP

●

Water source heat pump

●

Boiler(floor heater only)

●

2-pipe heating and cooling (Modulation)

●

4-pipe heating and cooling (Modulation)

●

2-pipe (Relay) ECM fan

●

4-pipe (Relay) ECM fan

●

2-pipe (Relay) 3-wire valve ECM fan

●

2-pipe (Relay) with floor heater, ECM

fan

●

2-pipe (Relay) with Tio2/ESP, ECM fan

●

Water source heat pump, ECM fan

●

2-pipe (Modulation) ECM fan

●

2-pipe (Modulation) with floor heater,

ECM fan

●

2-pipe (Modulation) with radiator, ECM

fan

●

AHU

●

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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Output

Relay(H/C)

●

3-stage Relay(FAN)

●

AO 0~10VDC(H/C)

●

AO 0~10VDC(EC FAN)

●

input

Binary Input

●

AI NTC(10K)

●

AI 0~10VDC PICV

●

Function

fan speed (low,mid,high,auto)

●

touch screen

●

℃/℉optional

●

ventilation

●

occupancy dry-contact input

●

remote sensor

●

key lock

●

set point limit

●

auto changeover

●

restart after power failure

●

low-temperature protection

●

Setting mode

●

Humidity display

●

BACnet

MS/TP

●

Segmentation

●

auto baud rate

●

Power

supply

Terminal voltage 220VAC

●

Terminal voltage 24VAC

●

3. Configuring MS/TP

The T9800 supports network connectivity to BAS using a BACnet MS/TP.

3.1 Wiring the network

BACnet MS/TP run over the physical connection RS-485 connection, which requiring three

connections:

A

B

COM

Connect the T9800 in line with other devices on the network.

3.2 End-of-Line termination

T9800 doesn’t support an on-board EOL termination. It is strongly recommend that the first device

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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and the last device has an EOL connected.

3.3 Setting the network parameters

All network configuration is done through the software. After power on the controller, and the fan

coil is power off, user can enter the controller setting mode by press the “fan” and “generale”

button simultaneously for 5 seconds. In setting mode, user can change the MAC address and baud

rate for the network. The setting index is 1 and 14.

Table 2 Network parameters

Parameter

Description

MAC

The valid address is 6-128. And the default value is 128, which is not

valid for a master device. User should change the MAC before

connect. Two devices on the same bas can’t have the same MAC

address.

Baud rate

The default value is Auto, which allows the device to automatically

detect the baud rate of the BACnet bus and operate at that speed.

An incorrect value causes the device to not communicate on the

network, and can potentially cause the network to fail. Options for

this setting are Auto, 9,600, 19,200, 38,400, and 76,800 Baud.

3.4 MS/TP controller mapping

3.4.1 Preparation

Before you map a T9800 Series Network Thermostat Controller into an NAE:

1. Decide which points within the thermostat controller need to be mapped. Only map

the points that need to be viewed on a regular basis because excessive mapping

lowers system performance. Suggested points for mapping include Zone Temp, Set

Point, Mode and Fan Speed.

2. Verify that a Field Bus is defined in the NAE. BACnet MS/TP devices attach to a Field

Bus. Refer to the BACnet MS/TP Integration with the NAE Technical Bulletin (LIT-

12011013) or the Metasys N2 Communication Bus Technical Bulletin (LIT-636018)

for instructions on how to define a Field Bus.

3.4.2 Adding a Thermostat Controller

The thermostat controller must be added before its points can be mapped. To add the

thermostat controller, select either the Field Bus and choose Field Device from the Insert

menu. Assisted Definition using Auto Discovery is the easiest way to add a new thermostat

controller online; however, this method requires that the thermostat controller to be added is

connected and ready to communicate. Device addresses must be unique from 6 to 127 for

the BACnet MS/TP.

3.4.3 Adding BACnet MS/TP Points

The required points must be mapped under the thermostat controller device. To map the

points, select the thermostat controller device under the BACnet Integration (refresh the tree

view if required to see a newly added thermostat controller device) and choose Field Point

from the Insert menu. Assisted Definition using Auto Discovery is the easiest way to add new

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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points online; however, this function requires that the thermostat controller that is to be

mapped is connected and ready to communicate. When mapping points offline, the point type

must match the BACnet object type (for example, AV, MV, BI), and the point instance number

must match the point BACnet instance number.

4. MS/TP points

4.1 T9800 points list

Some points exposed or not depend the value of app.

The app code show follow.

0 -＞2-pipe heating and cooling

1 -＞4-pipe heating and cooling

2 -＞2-pipe 3-wire valve

3 -＞2-pipe with floor heater

4 -＞2-pipe with Tio2/ESP

5 -＞Water source heat pump

6 -＞Boiler(floor heater only)

7 -＞2-pipe heating and cooling (Modulation)

8 -＞4-pipe heating and cooling (Modulation)

9 -＞2-pipe (Relay) ECM fan

10 -＞4-pipe (Relay) ECM fan

11 -＞2-pipe (Relay) 3-wire valve ECM fan

12 -＞2-pipe (Relay) with floor heater, ECM fan

13 -＞2-pipe (Relay) with Tio2/ESP, ECM fan

14 -＞Water source heat pump, ECM fan

15 -＞2-pipe (Modulation) ECM fan

16 -＞2-pipe (Modulation) with floor heater, ECM fan

17 -＞2-pipe (Modulation) with radiator, ECM fan

18 -＞AHU

The following table list all the points in T9800.

Table 3 T9800 BACnet points

Parameter

Range

Type-

Instance

EXPOSED

TF20-9JS0

TF21-9JS0

TB21-9JS0

Device

DEV-1

ALWAYS

L-ZNT

0 –55℃

AI-1001

ALWAYS

L-ZNH

0 –100%

AI-1002

ALWAYS

R-ZNT

0-55℃

AI-1003

ALWAYS

AI-1

0-10V

AI-1005

NONE

ALWAYS

AO-1

0 –100%

AO-1003

NONE

App:7,8,15,16,17

ALWAYS

AO-2

0 –100%

AO-1004

NONE

App: 8~18

NONE

BI-STATUS

Inactive

Active

BI-1011

ALWAYS

RLY-1

Close Open

BO-1012

App:0~5

App:7~14,18

ALWAYS

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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RLY-2

Close Open

BO-1013

App:0~5

App:7,8,10~14,16~18

ALWAYS

RLY-3

Close Open

BO-1014

App:0~5

App:7~17

ALWAYS

RLY-4

Close Open

BO-1015

ALWAYS

NONE

RLY-5

Close Open

BO-1016

App:1~5

NONE

FRST-PRT

Yes

BV-1101

ALWAYS

TIO2-ESP

Yes

BV-1105

App:4

App:13

NONE

FH-FAN

Yes

BV-1108

App:3

App:12,16

NONE

MUTE

Yes

BV-1109

ALWAYS

ECM-RLY

Yes

BV-1110

NONE

App:9~17

NONE

ZN-T

0~55℃

AV-1201

ALWAYS

ZNT-SP

0~37℃

AV-1202

ALWAYS

OFFSET

-5～5℃

AV-1203

ALWAYS

ZN-H

0% ~ 100%

AV-1204

ALWAYS

UNOCC-CLG-

22～32℃

AV-1206

ALWAYS

UNOCC-HTG-

10～21℃

AV-1207

ALWAYS

FP-SP

0~20℃

AV-1208

ALWAYS

STG-DFFR

0 ~10 °C

AV-1211

App:3

App:12,16

NONE

SMPL-TM

1~99S

AV-1212

NONE

App:7,8,15~18

ALWAYS

1~10

AV-1214

NONE

ALWAYS

0~99

AV-1215

NONE

ALWAYS

HTRSS

1~5

AV-1217

App:0~6

App:9~14,17

NONE

DMP-OPEN-

TIME

0-99(75~174)

AV-1218

NONE

App:18

NONE

BL-TIMER

5~99

AV-1219

ALWAYS

TIMER-ON

0-1440

AV-1222

ALWAYS

TIMER-OFF

0-1440

AV-1223

ALWAYS

FAN-DELAY

0-99

AV-1224

App:0~5

ALWAYS

MODE

Heat

Cool

Fan Only

Auto

MV-1302

ALWAYS

FAN-MODE

Low Speed

Med Speed

High Speed

Auto

MV-1303

App:0~5

ALWAYS

OCC-S

Unoccupied

MV-1304

ALWAYS

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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Occupied

FAN-DB

OFF

Low

MV-1308

App:0~5

ALWAYS

UNOCC-FAN

OFF

Low

MV-1309

App:0~5

ALWAYS

PWR-F-RSTT

OFF

Recovery

MV-1310

ALWAYS

HTG-STG

One Heating Stage -

Fan Coil.

One Heating Stage -

Floor Heating;

Two heating stage;

MV-1311

App:3

App:12,16

NONE

ERROR

OK = No Faults;

E1 = Internal

Sensor Shorted;

E2 = Internal

Sensor Opened;

HI = High

Temperature;

LO = Low

Temperature;

E3 = Remote

Sensor Shorted;

E4 = Remote

Sensor Opened;

E5 = Dew Point

Risk;

E6 = Filter Alarm;

E7 = BI warning.

MV-1312

ALWAYS

STATUS

Off;

Cooling;

Heating;

Ventilating;

Idle;

Frost Protecting;

Warning

MV-1313

ALWAYS

UNIT-EN

Shutdown;

Enable

MV-1314

ALWAYS

TIO2ESP-CTL

Automatic

Manual

MV-1315

App:4

App:13

NONE

OCC-OVRD

No Override;

Occupied;

Unoccupied.

MV-1317

ALWAYS

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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KEY-LOCK

No Lockout

Level 1 ->Lock all

keys

Level 2 ->Lock the

keys except Fan

Speed and Temp

Adjustment keys

Level 3 ->Lock the

ON/OFF and Clock

keys

Level 4 ->Lock the

keys except

ON/OFF key

MV-1322

ALWAYS

TEMP-DISP

Room Temperature

Setpoint

humidity

MV-1324

ALWAYS

4.2 Points descriptions

T9800

The T9800 device object.

L-ZNT

Internal temperature sensor.

L-ZNH

Internal humidity sensor.

R-ZNT

Remote temperature sensor.

AI-1

0~10VDC input.

AO-1

AO object to control the modulation valve.

AO-2

AO object to control the modulation valve.

BI-STATUS

Hardware binary input.

RLY-1

BO object to control the valve.

RLY-2

BO object to control the valve.

RLY-3

BO object to control the valve.

RLY-4

BO object to control the valve.

RLY-5

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin

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BO object to control the valve.

FRST-PRT

Frost protection, enable or disable the frost protection function.

TIO2-ESP

When app support the TIO2-ESP, if the TIO2-ESP control by manual, user can enable or disable

TIO2-ESP output by this point.

FH-FAN

When app support floor heating, this point can disable or enable the fan speed function when only

floor heating work.

MUTE

User can control the buzzer for keys by this point to mute or not.

ECM-PLY

When app support ECM function, this point can enable or disable the related relay output for ecm

function.

ZN-T

The current temperature.

ZNT-SP

The current set point.

OFFSET

This point can correct the current temperature.

ZN-H

The current humidity.

UNOCC-CLG-SP

Working in un-occupancy, the device cooling mode set-point.

UNOCC-HTG-SP

Working in un-occupancy , the device heating mode set-point.

FP-SP

Frost set point, when the frost protection enable this point define condition to start the frost

protection.

STG-DFFR

Stage difference, when app support the FCU heating and floor heating work together. Setting this

point to start FCU heating function when floor heating can’t meet objective.

SMPL-TM

Sample time, when app support modulation control, this point define the control period.

PB

Proportion band.

KI

Integral parameter.

HTRSS

This point define the dead band for ON/OFF control.

DMP-OPEN-TIME

Damper open time, when app is the AHU, user can set this point for different damper requirement.

BL-TIMER

Black lighter time.

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