Trane Tracer MP503, 4950 0490, 4950 0590 User Manual

®

Installing the Tracer™ MP503 Input/Output Module

Ordering number: 4950 0490, 4950 0590

Product overview

The Tracer MP503 input/output (I/O) module is a
field-installed device used to monitor inputs and
control binary outputs. The I/O module has four
universal inputs that can be configured as binary,
thermistor, 0–20 mA, or 0–10 Vdc. It also has four
binary outputs.

The Tracer MP503 is available in two different
versions: frame-mount (4950 0490) and metal
enclosure (4950 0590) (see Figure 1 and Figure 2 on
page 2).

The frame-mount package contains:

• A Tracer MP503 circuit board fastened to a metal
back plate

• A removable molded resin cover

The metal-enclosure package contains:

• A Tracer MP503 circuit board fastened to the back
plate of the metal enclosure

• A removable metal cover

Shipment

Operating environment

Make sure that the operating environment conforms
to the specifications listed in Table 1. Dimensions
and clearances are illustrated in Figure 1 and
Figure 2 on page 2.

Table 1. Operating environment specifications

Te m p e r a t u r e From -40°F to 158°F (-40°C to 70°C)

Humidity 5–95%, noncondensing

20–30 Vac (24 Vac nominal), 50–60 Hz

Power

Mounting
weight (frame­mount)

Mounting
weight (metal
enclosure)

Altitude 6,500 ft (2,000 m) maximum

Installation Category 3

10 VA per I/O module plus a maximum
of 12 VA per binary output used

Mounting surface must be able to
support 4 lb (2 kg)

Mounting surface must be able to
support 16 lb (7.5 kg)

Visually inspect all parts for obvious defects or

Pollution Degree 2

damage. All components are thoroughly inspected
before leaving the factory. Any claims for damage
incurred in shipping should be filed with the carrier.

Location

Trane recommends locating the Tracer

Storage environment

The storage environment must meet the following
requirements:

MP503 I/O module:

• In an indoor environment for protection from the
elements

• Where public access is restricted to minimize the

• Temperature: -40°F to 185°F (-40°C to 85°C)

–

• Relative humidity: 5

95%, noncondensing

possibility of tampering or vandalism

• Near the controlled equipment to reduce wiring
costs

• Where it is easily accessible for service personnel

Tr an e
A Business of American Standard Companies
www.trane.com
© 2004 American Standard Inc. All rights reserved. 3270 3332 C

Figure 1. Dimensions and clearances for the frame-mount I/O module

1 in.

(25 mm)

6.313 in. (160 mm)

4 in.

(102 mm)

24V

GND

1 GND 2 GND 3 GND 4 GND

AC POWER

BINARY OUTPUTS

STATUS

LED

4 in.

(102 mm)

4 in.

(102 mm)

5.375 in.
(137 mm)

UNIVERSALINPUTS

DC OUT

SERVICE

PIN

1 GND

24V 24V

LED

2 GND 3 GND 4 GND

COMM5

BAAB

COMM5

LED

5.625 in. (143 mm)

1 in.

Clearances

(25 mm)

Dimensions

Figure 2. Dimensions and clearances for the metal-enclosure version I/O module

2 in. (51 mm)

6.875 in.

(175 mm)

(229 mm)

2 in.

51mm)

24 in.

(610 mm)

9 in.

10.37 in.

(263 mm)

width with cover

1 in.

(25 mm)

1 in.

(25 mm)

Clearances

Dimensions

2 in.
(51 mm)

(25 mm)

2.25 in.
(58 mm)

7 in.

(178 mm)

1 in.

1.875 in.
(48 mm)

6.5 in.

(165 mm)

9 in.

(229 mm)

10.25 in.

(260 mm)

width without cover

3270 3332 C 2

Mounting the frame-mount
I/O module

Mounting the metal-enclosure
I/O module

IMPORTANT

Mount the Tracer MP503 with the cover on to avoid
damaging the circuit board during installation.

To mount the frame-mount I/O module:

1. Using the module as a template, mark the
location of the two mounting holes on the
mounting surface (Figure 3).

2. Set the module aside and drill holes for the
screws at the marked locations.

Drill holes for #10 (5 mm) screws or #10 wall
anchors. Use wall anchors if the mounting
surface is dry wall or masonry.

3. Insert wall anchors if needed.

4. Secure the module to the mounting surface with
#10 (5 mm) screws (not included).

Attach the frame-mount module securely so that it
can withstand the vibrations of associated heating,
ventilating, and air-conditioning (HVAC) equipment.

Figure 3. Mounting the Tracer MP503

To mount the metal-enclosure I/O module:

1. Remove the two cover screws and then the cover.

2. Using the enclosure as a template, mark the
location of the four mounting holes on the
mounting surface (Figure 4).

3. Set the enclosure aside and drill holes for the
screws at the marked locations.

Drill holes for #10 (5 mm) screws or #10 wall
anchors. Use wall anchors if the mounting
surface is dry wall or masonry.

4. Insert wall anchors if needed.

5. Secure the enclosure to the mounting surface
with #10 (5 mm) screws (not included).

Figure 4. Mounting the metal-enclosure Tracer
MP503

Agency listings/compliance

CE marked

UL and C-UL listed:
Energy Management Equipment—PAZX (UL 916)

UL 94-5V (UL flammability rating for plenum use)

FCC Part 15, Subpart B, Class B

3 3270 3332 C

AC-power wiring

See Figure 5 or Figure 6 for the location of the AC­power connections.

Wiring AC-power to the frame-mount I/O
module

Please read the preceding warning and cautions. To
connect AC-power to the frame-mount I/O module:

IMPORTANT

Make sure that the 24 Vac power supplies are
consistently grounded. Do not share 24 Vac between
I/O modules.

The recommended wire for AC-power is 16 AWG
copper wire. All wiring must comply with National
Electrical Code

Use a UL-listed Class 2 power transformer
supplying a nominal 24 Vac (20–30 Vac). The
transformer must be sized to provide adequate
power to the Tracer MP503 (10 VA) and outputs (a
maximum of 12 VA per binary output).



WARNING

Hazardous voltage!

Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious
injury.



CAUTION

Personal injury and equipment damage!

After installation, make sure that the 24 Vac
transformer is grounded through the board. Failure
to do so may result in personal injury and/or damage
to equipment.

CAUTION
Equipment damage!

Complete input/output wiring before applying
power to the controller. Failure to do so may cause
damage to the controller or power transformer due
to inadvertent connections to power circuits.

CAUTION
Equipment damage!

Do not share 24 Vac between controllers. Sharing
24 Vac power may cause controller damage.

®

and local codes.

1. Connect one secondary wire from the 24 Vac
transformer to the GND terminal shown in
Figure 5.

2. Connect the other secondary wire to the 24V
terminal.

Figure 5. AC-power wiring for frame-mount

GND

24V

24 Vac
transformer

1

24V

GND

GND

AC POWER

BIN

Wiring AC-power to the metal-enclosure
I/O module

Please read the preceding warnings and cautions. To
connect AC-power wiring to the enclosure:

1. Remove the cover of the enclosure.

2. Remove the knockout for the 0.5 in. (13 mm)
conduit from the enclosure and attach the
conduit.

3. Feed the power wire into the enclosure.

4. When mounting on dry wall or other non­conductive surface, connect an earth ground to
the earth-ground stud on the enclosure (Figure

6).

5. Connect one secondary wire from the 24 Vac
transformer to the GND terminal.

6. Connect the other secondary wire to the 24V
terminal.

7. Replace the cover of the enclosure.

3270 3332 C 4

Figure 6. AC-power wiring for metal enclosure

Earth-ground
stud

4GND24V

Communication-link wiring

The Tracer MP503 communicates with the building
automation system (BAS) and with other controllers
by means of a LonTalk
communication link. For instructions on LonTalk

®

(formerly called Comm5)

®

communication wiring and addressing, follow the
Tracer Summit Hardware and Software Installation
guide (BMTW-SVN01E), the Tracker Building
Automation System Hardware Installation guide
(BMTK-SVN01D), or another BAS installation
manual.

Input/output terminal wiring

All input/output terminal wiring for the Tracer
MP503 must meet the following requirements:

• All wiring must be in accordance with the
National Electrical Code and local codes.

• Use only 18–22 AWG, stranded, tinned-copper,
shielded, twisted-pair wire.

• Binary output wiring must not exceed 1000 ft
(300 m).

• Binary input and 4–20 mA input wiring must not
exceed 1000 ft (300 m).

• Thermistor input and 0–10 Vdc input wiring must
not exceed 300 ft (100 m).

• Do not run input/output wires in the same wire
bundle with any AC-power wires.

24 Vdc outputs

The Tracer MP503 provides power for mA and Vdc
sensors. The DC OUT 24V outputs are current­limited to 80mA (see Figure 7 on page 6). If sensors
draw more than 80mA, the output of the circuit
drops from 24V to 0V. Periodically, the circuit is
turned On to test the current draw and if the draw is
less than 80mA, the 24V DC OUT output returns to
24Vdc.

Binary outputs

The binary outputs are form A (SPST) relay outputs.
These relays are not dry contacts; they switch
24 Vac. A pilot relay is required for any application
requiring dry contacts. Relays connected to the
binary outputs on the I/O module (see Figure 7 on
page 6) cannot exceed 12 VA or 0.5 A current draw at
24 Vac.

Universal inputs

Each of the four universal inputs may be configured as:

•Binary

•Thermistor

• 0–20 mA

• 0–10 Vdc

You can configure each input using the device plug­in and a service tool, such as the Rover™ service
tool. The inputs are software configurable only;
there are no jumpers to set on the circuit board. The
inputs are factory-configured to be thermistors.
Figure 7 on page 6 shows some common sensor types
wired to the Tracer MP503.

The Tracer MP503 has four binary outputs and four
universal inputs.

5 3270 3332 C

Figure 7. Input/output terminal wiring diagram for the Tracer MP503

Typical relay On/Off

Typical relay On/Off

GND

24V

24V

GND

AC POWER

1 GND 2 GND 3 GND 4 GND

BINARY OUTPUTS

Typical relay On/Off

Typical relay On/Off

STATUS

LED

™
™

UNIVERSAL INPUTS

1 GND

2 GND 3 GND 4 GND

Not
used

Ty pi c a l
thermistor

Ty pi c a l
binary
switching
device

COMM5

BAAB

COMM5

LED

In

Out

®

LonTalk
communication
link

PIN

Ty p ic a l 2 -w i r e
4–20 mA
sensor

SERVICE

LED

DC OUT

24V 24V

+

–

sensor

+

–

GND

Ty p i ca l 3- w i re
0–10 Vdc sensor

The following are trademarks or registered trademarks of American Standard Inc.: Rover, Tracer, Tracer Summit, Tracker.

®

The following are trademarks or registered trademarks of their respective companies or organizations: LonTalk from Echelon;

®

National Electrical Code from National Fire Protection Association.

3270 3332 C 6

Declaration of Conformity

Manufacturer’s Name:

Manufacturer’s Address:

The manufacturer hereby declares that the product

Product Name:

Model Number:

Conforms to the following standards or other normative documents:

Electromagnetic Emission:

(by Council Directive 89/336/EEC)

Electromagnetic Immunity:

(by Council Directive 89/336/EEC)

IEC 1000-4-5:1995

Trane

4833 White Bear Parkway
St. Paul MN 55110
USA

Tracer MP503

MP503 (4950 0490 and 4950 0590)

EN50081-1:1992, EN50090-2-2:1996, and

EN61326-1:1997
Radiated EN55022:1994

Conducted EN55022:1994

EN50082-2:1995, EN50090-2-2:1996, and

EN61326-1:1997
IEC 1000-4-2:1995

EN61000-4-2

IEC 1000-4-3:1995

EN61000-4-3:1996

Amendment A1:1998

IEC 1000-4-4:1995

EN61000-4-4

EN61000-4-5

IEC 1000-4-6:1996

EN61000-4-6

IEC 1000-4-8:1993

EN61000-4-8

IEC 1000-4-11:1994

EN61000-4-11

Class A limit: 4950 0590
Class B limit: 4950 0490
Class B limit

±4.0 kV by Contact

10.0 V/m
80 to 1000 MHz

±2.0 kV Signal Lines
±2.0 kV AC Power Lines

10 V

0.15 to 80 MHz

30 A/m

When and Where Issued

Electromagnetic Emission 05/09/2001
Electromagnetic Immunity 07/06/2001

Mark of Compliance

This document validates CE conformity of the Tracer MP503 controller.

Craig Kasl

Design/Compliance Engineer

European Contact

Societe Trane (Epinal, France)

1, rue des Ameriques, B.P. 6

F-88191 Golbey Cedex, France

Phone: [phone]

Fax: [phone]

7 3270 3332 C