Tracer™ Controls Tracer MP501 Controller

January 2005

BAS-PRC008-EN

Introduction The Tracer MP501 controller is a configurable, multi-purpose controller used to provide direct-digital control for heating, ventilation, and air conditioning (HVAC) equipment. The controller can operate as a standalone device or as part of a building automation system (BAS). Communication between the controller and a BAS occurs via a LonTalk Comm5 communication link. The Tracer MP501 provides a single control loop with the following output types: 2-stage, tri-state modulating, and 0–10 Vdc analog. The controller can be configured in two possible modes: Space Comfort Controller (SCC) or generic. In SCC mode, the Tracer MP501 conforms to the LonMark SCC profile and controls space temperature to an active setpoint.

SCC mode supports the following applications: • Heating control loop • Cooling control loop • Two-pipe heat/cool automatic changeover using a communicated water loop temperature In generic mode, the Tracer MP501 provides control flexibility in a variety of applications that do not necessarily follow a LonMark profile. The control loop accepts inputs of the following types: temperature, pressure, flow, percent, or parts per million (ppm). Generic mode supports many applications including: • Fan speed control based on duct static pressure • Pump speed control based on water differential pressure or flow • Humidifier control based on space or duct relative humidity

™ ® The following are trademarks or registered trademarks of their respective companies: LonTalk and LonMark from Echelon Corporation; Rover, Tracer, and Tracer Summit from Trane.

© 2 2005 American Standard Inc.

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Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Inputs and outputs . . . . . . . . . . . . . . . . . . . . 4 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Network architecture . . . . . . . . . . . . . . . . . . 7 Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . 9 Specifications . . . . . . . . . . . . . . . . . . . . . . . 11

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Inputs and outputs Tracer MP501 inputs and outputs include: • Analog inputs: SCC mode: zone temperature, zone temperature setpoint Generic mode: 4–20 mA input • Binary inputs: SCC mode: occupancy Generic mode: enable/disable • Outputs: 2-stage, tri-state modulation, or 0–10 Vdc analog SCC mode: fan on/off Generic mode: interlock device on/off (follows the enable/disable binary input)

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• Generic point for use with a Tracer Summit building automation system: binary input (shared with occupancy/ enable) Generic inputs pass information to the building automation system. They do not directly affect the operation of the Tracer MP501 outputs.

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Features Easy installation

Control interlock

The Tracer MP501 is suitable for indoor mounting in a variety of locations. Clearly labeled screw terminals ensure that wires are connected quickly and accurately. A compact enclosure design simplifies installation in minimal space.

Available in generic mode only, the interlock input works with a time clock or other binary switching device to enable or disable the controller process. When disabled, the control output is driven to a configurable (0–100%) default condition.

Flexible control Using a single proportional, integral, and derivative (PID) control loop, the Tracer MP501 controller controls an output based on a measured input value and a specified setpoint. The output can be configured as a 2-stage, a tri-state modulating, or a 0–10 Vdc analog signal to control to the active setpoint.

Adjustable PID loop The Tracer MP501 provides a single control loop with adjustable PID control parameters, which allows control to be customized for a variety of applications.

Interoperability In SCC mode, the Tracer MP501 conforms to the LonMark SCC profile. In generic mode, the controller does not conform to a specific LonMark profile, but supports standard network variable types (SNVTs). Both modes communicate via the LonTalk protocol. This allows the Tracer MP501 to be used with a Trane Tracer Summit system as well as other building automation systems that support LonTalk.

Occupied and unoccupied operation Available in SCC mode only, the occupancy input works with a motion (occupancy) sensor or a time clock. A communicated value from a building automation system can also be used. The input allows the controller to use unoccupied (setback) temperature setpoints.

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Continuous or cycling fan operation Available in SCC mode only, the fan can be configured to run continuously or cycle on and off automatically during occupied operation. The fan will always cycle in unoccupied mode.

Timed override Available in SCC mode only, the timed override function for after-hours operation allows users to request unit operation by the touch of a button on the zone temperature sensor. The override timer is configurable with a range of 0–240 minutes. Additionally, users can press the Cancel button at any time to place the unit back into unoccupied mode.

Manual output test Pressing the Test button on the controller exercises all of the outputs in sequence. This feature is an invaluable troubleshooting tool that does not require a PC-based service tool.

Peer-to-peer communication The Tracer MP501 can share data with other LonTalk-based controllers. Several controllers can be bound as peers to share data such as setpoint, zone temperature, and heating/cooling mode. Space temperature control applications having more than one unit serving a single large space can benefit from this feature, which prevents multiple units from simultaneously heating and cooling.

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Dimensions The Tracer MP501 dimensions for the plastic-cover model are shown in Figure 1. Dimensions for the metal-cover model are shown in Figure 2.

Figure 1: MP501plastic-cover model dimensions

6.31 in. (161 mm) 5.625 in. (143 mm)

2.0 in. (51 mm)

6.875 in. (175 mm)

5.375 in. (137 mm)

Figure 2: MP501 metal-cover model dimensions 1.875 in. (48 mm)

6.5 in. (165 mm) 0.28 in. (7 mm)

9.0 in. (229 mm) 9.0 in. (229 mm)

7.0 in. (178 mm)

10.37 in. (263 mm) with cover

1.0 in. (25 mm) 2.25 in. (58 mm)

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10.25 in. (260 mm) without cover

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Network architecture The Tracer MP501 can operate on a Tracer Summit building automation system (see Figure 3), on a peer-to-peer network (see Figure 4), or as a standalone device. The Tracer MP501 can be configured using the Rover service tool for Tracer

controllers or any other PC-based service tool compliant with the EIA/CEA-860 standard. This tool can be connected to a communication jack on a zone temperature sensor or at any accessible location on the LonTalk Comm5 communication link.

Figure 3: Tracer MP501 controllers as part of a building automation system

Tracer Summit PC Workstation

LAN (Ethernet or ARCNET)

TRACER SUMMIT

Building control unit (BCU)

ALM

TRACER SUMMIT

PWR

ALM

PWR

BCU

Perimeter fin tube radiation LonTalk Comm5 link

Fan controlling building pressurization MP501

MP501

®

55

65

60

70

50

75

**

80 85 *

Zone temperature sensor

Additional LonTalk devices

Additional LonTalk devices

®

ON

Cancel

o oo

ROVER

TM

H

L

Building static pressure sensor PC-based service tool

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Fin tube with control valve

VFD

Exhaust fan with variable frequency drive (VFD)

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Figure 4: Tracer MP501 controllers on a peer-to-peer network 55

65

60

50

70 75

**

80

*

85

ON

Cancel

One zone temperature sensor for multiple MP501 controllers

MP501

MP501

®

®

Additional LonTalk devices

Multiple fan coils serving a large space

Fan coil

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Wiring diagrams Figure 5 shows a general wiring diagram for the Tracer MP501 controller in SCC mode. Figure 5: Tracer MP501 controller wiring diagram (SCC mode) 2nd stage or drive closed* 1st stage or drive open*

Fan (on/off)

H

Analog output (0–10 Vdc)*

24 Vac N

GND 24V 24V 1

AC POWER

COMM5 SERVICE LED PIN

A

B

24V

2

24V

BI

A

B

3

OUT GND

BINARY OUTPUTS

BI

AI 1

AO

STATUS LED

ZONE SENSOR

GND +20 AI1 SET GND ZN

COMM5 LED

Not used 55

65

In

60

70

50

75 80

85

*

1

**

Comm5 communication link

2

Out

Trane zone temperature sensor

3 ON

Occupancy or generic input

Comm5

4

Cancel

5

* Only one type of output can be used at one time (2-stage, tri-state modulation, or analog) BAS-PRC008-EN

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Figure 6 shows a general wiring diagram for the Tracer MP501 controller in generic mode. Figure 6: Tracer MP501 controller wiring diagram (generic mode)

2nd stage or drive closed* 1st stage or drive open*

Interlock device (on/off)

H

Analog output (0–10 Vdc)*

24 Vac N

GND 24V 24V 1

AC POWER

COMM5 SERVICE LED PIN

A

B

A

24V

BI B

2

24V

BINARY OUTPUTS

BI

AI 1

3

OUT GND

AO

STATUS LED

ZONE SENSOR

GND +20 AI1 SET GND ZN

COMM5 LED

Not used In Comm5 communication link Out

}

Analog input (4–20 mA)

Enable/disable or generic input * Only one type of output can be used at one time (2-stage, tri-state modulation, or analog) 10

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Specifications Power Supply: 21–27 Vac (24 Vac nominal) at 50/60 Hz Consumption: 10 VA (70 VA at maximum utilization)

Dimensions Plastic-cover model dimensions (see Figure 1 on page 6) Height: 5.375 in. (137 mm) Width: 6.875 in. (175 mm) Depth: 2.0 in. (51 mm) Metal-cover model dimensions (see Figure 2 on page 6) Height: 9.0 in. (25 mm) Width: 10.37 in. (263 mm) Depth: 2.25 in. (58 mm)

Operating environment Temperature: 32 to 122°F (0 to 50°C) Relative humidity: 10–90% noncondensing

Storage environment Temperature: -4 to 160°F (-20 to 70°C) Relative humidity: 10–90% noncondensing

Agency listings/compliance CE—Immunity: EN 50082-1:1997 CE—Emissions: EN 50081-1:1992 (CISPR 11) Class B EN 61000-3-2, EN 61000-3-3 UL and C-UL listed: Energy management system UL 94-5V (UL flammability rating for plenum use) FCC Part 15, Class A

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The Trane Company An American Standard Company www.trane.com For more information contact your local district office or e-mail us at [email protected]

Literature Order Number

BAS-PRC008-EN

File Number

PL-ES-BAS-000-PRC008-0105

Supersedes

January 2001

Stocking Location

La Crosse

Since The Trane Company has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice.