Johnson Controls TEC2645-4 Manual de servicio

1TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers

Technical Bulletin

Refer to the QuickLIT Web site for the most up-to-date version of this document.

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connecting the MS/TP Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

MS/TP Controller Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Adding a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Adding Point Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

MS/TP Bus Objects Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers . . . . . . . . . . . . . . 11

TEC2645-4 Thermostat Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

TEC26x7-4 and TEC26x7-4+PIR Series Thermostat Controllers . . . . . . . . . . . . . . . . . 22

TEC2601-4 and TEC2601-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 26

TEC2602-4 and TEC2602-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 29

TEC2603-4 and TEC2603-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 33

TEC2613-4 and TEC2613-4+PIR Temperature and Humidity Controllers . . . . . . . . . . 37

TEC2604-4 and TEC2604-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 41

TEC262xx-0+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

TEC Series BACnet® MS/TP Network Temperature and

Humidity Controllers

Technical Bulletin Code No. LIT-12011592

Issued March 4, 2013

Supersedes May 13, 2011

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin2

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin 3

TEC Series BACnet® MS/TP Network

Temperature and Humidity Controllers

Technical Bulletin

Introduction

This document describes how to configure the various TEC Series Network

Temperature and Humidity Controllers for BACnet® Master-Slave/Token-Passing

(MS/TP) networked applications, including how to:

• connect to the MS/TP Bus and map a controller into a Network Automation

Engine (NAE)

• add a controller

• add point objects

• override via the NAE

• troubleshoot the controller

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin4

Related Documentation

See Table 1 to locate information in related documentation.

Table 1: TEC Series BACnet MS/TP Network Temperature and Humidity

Controllers Related Documentation (Part 1 of 2)

For Information On See Document Document

Number

Applications,

Features, and

Benefits of the

TEC Series BACnet

MS/TP Network

Temperature and

Humidity Controllers

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet MS/TP

Networked Thermostat Controllers with Dehumidification Capability,

Fan Control, and Occupancy Sensing Capability Product Bulletin

LIT-12011587

TEC2645-4 BACnet MS/TP Networked Thermostat Controller with

Single Proportional Output and One-Speed Fan Control Product

Bulletin

LIT-12011586

TEC26x7-4 and TEC26x7-4+PIR Series BACnet MS/TP Networked

Thermostat Controllers with Two Outputs Product Bulletin LIT-12011584

TEC260x-4 and TEC260x-4+PIR Series BACnet MS/TP Networked

Thermostat Controllers Product Bulletin LIT-12011585

TEC2613-4 and TEC2613-4+PIR BACnet MS/TP Network

Temperature and Humidity Controllers Product Bulletin LIT-12011692

TEC2620 Series Non-Programmable Fan Coil Network Thermostat

Controller and Remote I/O Relay Packs Product Bulletin LIT-12011839

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet MS/TP

Networked Thermostat Controllers with Dehumidification Capability,

Fan Control, and Occupancy Sensing Capability Catalog Page

LIT-1900620

TEC2645-4 BACnet MS/TP Networked Thermostat Controllers with

Single Proportional Output and One-Speed Fan Control Catalog Page LIT-1900619

TEC26x7-4 and TEC26x7-4+PIR Series BACnet MS/TP Networked

Thermostat Controllers with Two Outputs Catalog Page LIT-1900617

TEC260x-4 and TEC260x-4+PIR Series BACnet MS/TP Networked

Thermostat Controllers Catalog Page LIT-1900618

TEC2613-4 and TEC2613-4+PIR BACnet MS/TP Network

Temperature and Humidity Controllers Catalog Page LIT-1900690

TEC2620 Series Non-Programmable Fan Coil Network Thermostat

Controller and Remote I/O Relay Packs Catalog Page LIT-1900813

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin 5

Locating, Mounting,

and Wiring a

TEC Series BACnet

MS/TP Network

Temperature and

Humidity Controller

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet MS/TP

Networked Thermostat Controllers with Dehumidification Capability,

Fan Control, and Occupancy Sensing Capability Installation

Instructions

Part No.

24-9890-1001

TEC2645-4 BACnet MS/TP Networked Thermostat Controller with

Single Proportional Output and One-Speed Fan Control Installation

Instructions

Part No.

24-9890-1028

TEC26x7-4 and TEC26x7-4+PIR Series BACnet MS/TP Networked

Thermostat Controllers with Two Outputs Installation Instructions Part No.

24-9890-1036

TEC2601-4 and TEC2601-4+PIR BACnet MS/TP Networked

Single-Stage Thermostat Controllers Installation Instructions Part No.

24-9890-1044

TEC2602-4 and TEC2602-4+PIR BACnet MS/TP Networked

Heat Pump Thermostat Controllers Installation Instructions Part No.

24-9890-1052

TEC2603-4 and TEC2603-4+PIR BACnet MS/TP Networked

Multi-Stage Thermostat Controllers Installation Instructions Part No.

24-9890-1060

TEC2613-4 and TEC2613-4+PIR BACnet MS/TP Network Multi-Stage

Temperature and Humidity Controllers Installation Instructions Part No.

24-9890-1389

TEC2604-4 and TEC2604-4+PIR BACnet MS/TP Networked

Multi-Stage Economizer Thermostat Controllers Installation

Instructions

Part No.

24-9890-1079

TEC2620 Series Fan Coil Network Thermostat and Fan Coil Packs

Installation Instructions Part No.

24-9890-1427

Mounting and Wiring

a PIR Occupancy

Sensing Accessory

Cover

Passive Infrared (PIR) Accessory Covers Installation Instructions Part No.

24-9890-870

Particular Options

Specified in the

BACnet Standard

and Implemented in

the TEC Series

BACnet MS/TP

Network

Temperature and

Humidity Controllers

TEC2645-4, TEC26x6-4, TEC26x6H-4(+PIR), TEC26x7-4, and

TEC26x7-4+PIR Series Network Thermostat Performance

Implementation Conformance Statement Technical Bulletin

LIT-12011589

TEC260x-4(+PIR) and TEC2613-4(+PIR) Series Network Temperature

and Humidity Controllers Performance Implementation Conformance

Statement Technical Bulletin

LIT-12011588

PIR Accessory

Occupancy Sensing,

Operation, and

Application

TEC2x45-4, TEC2xx6(H)-4, TEC2xx6H-4+PIR, TEC2xx7-4, and

TEC26x7-4+PIR Series Thermostat Controllers Application Note LIT-12011594

Table 1: TEC Series BACnet MS/TP Network Temperature and Humidity

Controllers Related Documentation (Part 2 of 2)

For Information On See Document Document

Number

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin6

Product Overview

The technologically advanced TEC Series Temperature and Humidity Controllers

feature a Building Automation System (BAS) BACnet MS/TP communication

capability that enables remote monitoring and programming for efficient space

temperature control.

The TEC Series Temperature and Humidity Controllers feature an intuitive user

interface with backlit display that makes setup and operation quick and easy. The

controllers also employ a unique, Proportional-Integral (PI) time-proportioning

algorithm that virtually eliminates temperature offset associated with traditional,

differential-based controllers.

The TEC Series Temperature and Humidity Controllers are BACnet MS/TP

networked devices that provide control of:

• rooftop units (with or without economizers)

• heat pumps

• single- and multi-stage heating and cooling equipment

• humidification and dehumidification equipment

• two- or four-pipe fan coils

• cabinet unit heaters

• local hydronic reheat valves

• pressure dependent Variable Air Volume (VAV) equipment with or without

local reheat

• other zoning equipment using an on/off, floating, or proportional

0 to 10 VDC control input

Connecting the MS/TP Bus

To connect the MS/TP Bus:

1. Set the MS/TP address of the TEC Series BACnet MS/TP Network

Temperature and Humidity Controller per the engineering drawings and test

for bus voltage, polarity, and isolation prior to wiring the MS/TP Bus. See the

Com addr parameter in the MS/TP Bus Objects Tables to set the MS/TP

address for the controller.

Note: For TEC26x6, TEC26x7, and TEC2645 models, Pressing and

holding the UP/DOWN arrow keys simultaneously displays the MS/TP

address that is assigned. For TEC260x and TEC2613 models,

pressing and holding the YES/NO keys simultaneously displays the

MS/TP address that is assigned.

Note: For more details on wiring the MS/TP Communications Bus, refer to

the MS/TP Communications Bus Technical Bulletin (LIT-12011034).

2. Observe the polarity when connecting the bus wires to the controller.

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin 7

3. After the bus wires are connected to the first controller, continue in a

daisy-chained fashion to the next controller.

Note: The bus wiring must be twisted-pair lines. Do not run the bus wiring in

the same conduit as line voltage wiring (30 VAC or above) or other

wiring that switches power to highly inductive loads (such as

contactors, coils, motors, or generators).

The MS/TP Bus requires proper termination and biasing at each end of a segment

(a segment is a physically continuous length of wire). Because controllers are not

equipped with end-of-line termination, a Johnson Controls® MS-BACEOL-0

End-of-Line Terminator (ordered separately) or similar device is recommended to

provide this end-of-line termination. An end-of-line terminator is required if a

supervisory controller is not at the end of the segment. If a supervisory controller is

at the end of the segment, then the end-of-line terminator switch on the supervisory

controller must be set in the ON position.

Note: Refer to the controller product bulletin for end-of-line terminator ordering

information.

The controller should be configured for automatic baud rate detection. Do not

exceed the maximum number of devices allowed on a field bus. Be sure that the

wiring terminations are set correctly and that all communication wiring is

daisy-chained with no taps.

A small green light under the controller cover (on the left edge when facing the

controller) indicates the communications mode when the controller is operating.

The following blink codes may be seen:

•Short-Short-Long: Indicates that the baud rate is known and that

communication is active.

•Short-Short: Indicates that the controller is scanning for the correct baud rate

and that there is no communication.

•Off: Indicates that there is no power to the controller or that the MS/TP wiring

polarity is reversed.

•Long: Indicates that the MS/TP communication daughter board is the wrong

type for the main board.

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin8

MS/TP Controller Mapping

Preparation

Before mapping a TEC Series BACnet MS/TP Network Temperature and

Humidity Controller into an NAE:

1. Decide which point objects within the controller need to be mapped. Only map

the point objects that need to be viewed on a regular basis because excessive

mapping lowers system performance. Suggested point objects for mapping

include: Room Temp, Mode, Fan, Occupancy Command, Heating SP, Cooling

SP, Setback Heating SP, and Setback Cooling SP. In addition, alarm points may

be mapped if they are used, and other point objects may be mapped if required.

Use the Engineering view to examine infrequently used point objects.

Note: We recommend that all controller configuration parameters be set as

desired prior to mapping the objects into the controller. If any controller

configuration parameters are altered after the objects are mapped into the

controller, it is recommended that all objects be re-mapped. We also

recommend caution when mapping configuration parameters, as they

should only be mapped if the operator is fully familiar with their use.

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) for instructions on how to define a Field Bus.

3. For Metasys® system software prior to Release 4.0, verify that a BACnet

Integration is defined for the Field Bus. The controllers are mapped as BACnet

devices under a Field Bus BACnet Integration. Refer to the BACnet Controller

Integration with NAE/NCE Technical Bulletin (LIT-1201531) for instructions

on how to define a BACnet Integration.

Note: For Metasys system Release 4.0 or later software, this step is not

required.

At this point, the controller (and the required point objects inside the controller)

can be mapped.

Adding a Controller

The controller must be added before its points can be mapped. To do this, select the

Field Bus or a folder under it (refresh the tree view, if required, to see a newly

added BACnet Integration) and choose Field Device from the Insert menu.

Note: For Metasys system software prior to Release 4.0, select the BACnet

Integration under the Field Bus (refresh the tree view, if required, to see a

newly added BACnet Integration) and choose Field Device from the Insert

menu.

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin 9

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

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

connected and ready to communicate.

Device object names used with BACnet Communication must be unique to fully

satisfy the requirements of BACnet. The controller automatically selects a device

object name for itself using the format TEC26xx-aaa, where aaa designates the

address selected (from 004 to 127) on the MS/TP network. If this name needs to be

changed by writing a new one into the controller device object, that name change

should be done before any point objects are mapped. Be sure that the name of the

new controller being added to the NAE matches that of the controller itself. This

name goes into the Name field of the Object section on the Configuration tab of the

Configure step in the Insert Field Device Wizard.

Device object IDs used with BACnet communications must be unique to fully

satisfy the requirements of BACnet MS/TP network guidelines. The controller

automatically selects a device object ID for itself using the format mmaaa, where

mm is 72 for TEC26x7 models, 73 for TEC26x6 and TEC2645 models, and 76 for

TEC260x and TEC2613 models; and, aaa designates the address selected (from

004 to 127) on the MS/TP network (for example, 73004, 73005). If this ID needs

to be changed by writing a new one into the controller device object, that ID

change should be done before any point objects are mapped. Be sure that the ID of

the new controller being added to the NAE matches that of the controller itself.

This number goes into the Instance Number field of the Network section on the

Hardware tab of the Configure step in the Insert Field Device Wizard.

Adding Point Objects

The required point objects must be mapped under the controller device. To

accomplish this, select the controller device under the BACnet Integration (refresh

the tree view if required to see a newly added controller device) and choose Field

Point from the Insert menu.

Note: For Metasys system Release 4.0 or later software, select a Field Bus or a

folder under it.

Assisted Definition using Auto Discovery is the easiest way to add new point

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

mapped is connected and ready to communicate. When mapping point objects, 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.

IMPORTANT: Because some of the objects may not directly correlate to a

previous version (TEC26xx-2), you must rediscover all point objects for the

TEC26xx-4 version. For detailed information on this mapping, see the MS/TP

Controller Mapping section of this document.

TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers Technical Bulletin10

Troubleshooting

Table 2: Troubleshooting Details1

1. For common MS/TP troubleshooting information, refer to the MS/TP Communications Bus

Technical Bulletin (LIT-12011034).

Symptom Probable Causes

Multiple Symptoms Excessive bus errors may be occurring.

A device may have been added or changed with a duplicate address

(may not be the same address as some devices having problems, and

may have happened sometime before the problem was noticed).

Wiring errors or wire problems may exist.

The baud rate may have been changed on some devices on the network

but not all devices.

Max_Master may have been changed incorrectly (may have happened

sometime before the problem was noticed).

A download may be in progress.

There may be a fault at a device.

A repeater may be needed or may be configured incorrectly.

There may be a duplicate device object name or instance.

Poor Performance See the probable causes listed previously in the Multiple Symptoms

section of this table.

Excessive bus traffic may exist (bus overload).

The baud rate may be set too low.

There may be too many devices on the network.

There may be unaccounted devices on the network (not mapped to the

NAE).

There may be unusually slow devices on the network or devices that are

slow to respond.

Controller Goes

Offline See the probable causes listed previously in the Multiple Symptoms

section of this table.

A power failure or other failure may have occurred at the controller.

Communication may have been disabled at the controller.

Controller Does Not

Come Online See the probable causes listed previously in the Multiple Symptoms

section of this table.

A controller may be connected to the wrong bus.

A baud rate may be specified in the new controller that is incompatible

with the running network.

No device on the network is configured to use a specific baud rate

(normally the NAE), but all devices are set to use auto baud. At least one

device, typically the bus supervisor (NAE), must have an assigned baud

rate. Set the baud rate in the bus supervisor and set all other devices to

auto baud.

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