SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing
of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and
training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags,
stickers, and labels that are attached to the equipment.
Power Supply Module PM014
24 Vdc forTrane
®
inter-module communication buses
PM014
Installation, Operation,
and Maintenance
BAS-SVX33F-EN
January 2018
© 2018 Ingersoll Rand All rights reserved BAS-SVX33F-EN
Introduction
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as required.Your personal safety and the proper
operation of this machine depend upon the strict observance of these precautions.
The three types of advisories are defined as follows:
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTIONs
Indicates a potentially hazardous situation which, if not avoided, could result in
minor or moderate injury. It could also be used to alert against unsafe practices.
NOTICE
Indicates a situation that could result in equipment or property-damage only
accidents.
WARNING
Proper Field Wiring and Grounding Required!
Failure to follow code could result in death or serious injury. All field wiring MUST be
performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE
and ELECTROCUTION hazards.To avoid these hazards, you MUST follow requirements for field
wiring installation and grounding as described in NEC and your local/state electrical codes.
Failure to follow code could result in death or serious injury.
WARNING
Personal Protective Equipment (PPE) Required!
Installing/servicing this unit could result in exposure to electrical, mechanical and chemical
hazards.
• Before installing/servicing this unit, technicians MUST put on all PPE required for the work
being undertaken (Examples; cut resistant gloves/sleeves, butyl gloves, safety glasses, hard
hat/bump cap, fall protection, electrical PPE and arc flash clothing). ALWAYS refer to
appropriate Material Safety Data Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA
guidelines for proper PPE.
• When working with or around hazardous chemicals,ALWAYS refer to the appropriate MSDS/
SDS and OSHA/GHS (Global Harmonized System of Classification and Labeling of
Chemicals) guidelines for information on allowable personal exposure levels, proper
respiratory protection and handling instructions.
• If there is a risk of energized electrical contact, arc, or flash, technicians MUST put on all PPE
in accordance with OSHA, NFPA 70E, or other country-specific requirements for arc flash
protection, PRIOR to servicing the unit. NEVER PERFORM ANY SWITCHING,
DISCONNECTING, OR VOLTAGETESTING WITHOUT PROPER ELECTRICAL PPE AND ARC
FLASH CLOTHING. ENSURE ELECTRICAL METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.
Failure to follow instructions could result in death or serious injury.
BAS-SVX33F-EN 3
Introduction
Copyright
This document and the information in it are the property ofTrane, and may not be used or
reproduced in whole or in part without written permission.Trane reserves the right to revise this
publication at any time, and to make changes to its content without obligation to notify any person
of such revision or change.
Trademarks
All trademarks referenced in this document are the trademarks of their respective owners.
Agency Listings and Compliance
The European Union (EU) Declaration of Conformity is available from your localTrane® office.
Revision History
BAS-SVX33F-EN
• Changed terminology to reflect new SC+ system controller.
4 BAS-SVX33F-EN
Table of Contents
General Information ...............................................5
Dimensions .................................................... 6
Clearances ..................................................... 6
Codes and Standards Compliance .................................. 7
Specifications .................................................. 8
Pre-Installation ....................................................9
Mounting Location .............................................. 9
Transformer Considerations ...................................... 9
Recommended Configuration .................................... 10
Installing the Power Supply Module .................................11
Repositioning or Removing the Power Supply Module ............... 12
Power and Field Wiring ......................................... 13
Installing Power Input Wire .................................... 13
Grounding the Power Supply Module ............................ 14
Installing Field Wire ........................................... 14
Separating the IMC Bus for Large Systems ....................... 15
Starting Up the Power Supply Module ...........................16
Operation and Troubleshooting .....................................17
Operational Features ............................................ 17
Troubleshooting ............................................... 17
BAS-SVX33F-EN 5
General Information
This section provides the following product information for the power supply module:
• Product description
• Dimensions
• Clearances
• Codes and standards compliance
• Specifications
The PM014 power supply module provides 24 Vdc forTraneinter-module communication (IMC)
buses. IMC buses are used in components of Trane building automation systems (BAS), such as
theTracer® SC+ system controller and theTracer XM30 expansion module, and other equipment.
The PM014 uses a full-wave rectifier. It is designed to safely share power with a device that uses
half-wave rectification within the transformer limits.The power supply module has four
connections that provide power to an IMC bus:
• Two four-pin IMC pin connections for use with wiring harnesses.
• Two four-pin IMC terminal blocks for use with field wiring.
Figure 1. Power supply module components
PM014
24
VAC
XFMR
OUT
24
VAC
24 Vac input connection
24 Vac output connection
Status LED
IMC pin connection
IMC pin connection
IMC terminal block
IMC terminal block
Example of a wiring
harness (for use with IMC
pin connections)
6 BAS-SVX33F-EN
General Information
Dimensions
The following illustration provides specific dimension details.
Clearances
Clearances must be provided for air circulation, mounting the power supply module, and
connecting cables.The following illustration and table provide the recommended minimum
clearances.
24
24
VAC
VAC
XFMR
XFMR
OUT
OUT
24
24
VAC
VAC
2.4 in.
(6.14 cm)
2.4 in.
(6.1 cm)
1.8 in.
(4.5 cm)
4.0 in.
(10.2 cm)
2.4 in.
(6.1 cm)
1.2 in.
(3.1 cm)
0.6 in.
(1.5 cm)
2.0 in.
(5.0 cm)
2.0 in.
(5.0 cm)
PM014
24
VAC
XFMR
OUT
24
VAC
Vents
Vent clearance
Vent clearance
Vents
Clearance Measurement
Installing and operating
In accordance with local
electrical codes
Vent space 1.8 in. minimum (4.6 cm)
Note: The power supply vents must have adequate open space to
allow convective air flow to cool the unit.
1.8 in.
(4.6 cm)
1.8 in.
(4.6 cm)
BAS-SVX33F-EN 7
General Information
Codes and Standards Compliance
The power supply module is in conformance with the codes and standards listed in Table 1.
Table 1. Codes and standards
Listing Description
UL/C-UL/IEC60950-1
UL recognized under Information Technology Equipment – Safety –
Part 1: General Requirements
UL916 Open listing
CE Conformity
The European Union (EU) Declaration of Conformity is available from
your local Trane® office.
FCC Part 15, Class A Emissions —
2002/95/EC – RoHS Restriction of hazardous substances directive
8 BAS-SVX33F-EN
General Information
Specifications
The power supply module is in conformance with the physical, environmental, and electrical
specifications as listed in the following tables.
(a)The power supply output is UL 1310 class 2 and IEC60950-1 limited power source (LPS).
(b) Maximum required for 1.4 A DC loading.
Table 2. PM014 Specifications
Enclosure IP20 (NEMA 1)
DIN rail DIN 50022, 35 mm x 7.5 mm
Environmental Parameters:
• Storage temperature
-67°F (-55°C) minimum; 203°F (95°C) maximum
• Operating temperature
–40°F (–40°C) minimum; 158°F (70°C) maximum
• Humidity (non-condensing)
5% relative humidity (RH) minimum; 95% RH maximum
Electrical Parameters:
• Output voltage
(a)
22.8 Vdc minimum; 24 Vdc nominal; 25.2 Vdc maximum
• Output current
(a)
0 minimum; 1.4 Adc maximum
• Input voltage
18 Vac minimum; 24 Vac nominal; 32 Vac maximum; 50 or 60 Hz
• Input VA
20 VA minimum; 76 VA
(b)
BAS-SVX33F-EN 9
Pre-Installation
This section provides the following pre-installation information:
• Mounting location
• Transformer considerations
• Recommended configurations
Mounting Location
Important: The power supply module must be mounted onto a DIN rail inside an enclosure that
meets all local electrical codes.
Observe the following:
• The enclosure must allow for the minimum 1.8 in. (4.6 cm) vent clearance around the top and
bottom of the power supply vents.
• The mounting location must meet the temperature and humidity specifications of the power
supply as outlined in
Table 3, p. 9.
• Do not mount the power supply module on a flat surface, such as on a floor or on top of a table.
Mount in an upright position with the front facing outward.
Transformer Considerations
Follow these guidelines when using transformers:
• Transformers must be class 2 rated.
• Non-class 2 transformers must be fused appropriately.
• Fully loaded power supply modules require 75 VA transformers.
The transformer size can be reduced for smaller loads on the power supply module; however,
transformers less than 20VA should not be used. Table 3 shows the recommended transformerVA
based on the PM014 output current.
Table 3. Transformer recommendations
PM014 output current Less than or equal to 0.7 Adc Greater than 0.7
Transformer VA (minimum) 40 75
10 BAS-SVX33F-EN
Pre-Installation
Recommended Configuration
The power supply module can be mounted onto a DIN rail as illustrated in Figure 2 . Place DIN rail
end stops at each end of the configuration to prevent shifting of modules.
Figure 2. Correct horizontal mounting
PM014
24
VAC
XFMR
OUT
24
VAC
DIN rail
end stop
DIN rail
end stop
Vent clearance
Vent clearance
1.8 in. min.
(4.6 cm)
1.8 in. min.
(4.6 cm)
Power supply
module
24 Vac input
connection
BAS-SVX33F-EN 11
Installing the Power Supply Module
Installation of the power supply module must be performed by qualified personnel. Work must be
in conformance with this document and local codes.
Before mounting the power supply module:
• Ensure that the DIN rail has been installed in the mounting location.
• Ensure that the enclosure allows for the minimum 1.8 in. (4.6 cm) vent clearance around the top
and bottom of the power supply vents.
Follow these steps to mount the power supply module:
1. Perform the lockout/tagout procedures for line voltage power to the electrical cabinet.
2. Do not use excessive force. Excessive force could cause equipment damage.
3. Hook the power supply module DIN rail groove to the edge of the DIN rail closest to the IMC
pin connectors (
Figure 3).
4. Press down on the side of the power supply that holds the DIN rail latch. Press until you hear
the latch click.
5. Place a DIN rail end-stop at each end of the row of modules to prevent shifting.
NOTICE:
Avoid Equipment Damage!
Do not use excessive force. Excessive force could cause equipment damage.
Figure 3. Mounting the power supply module
PM014
click
DIN rail
latch
DIN rail
groove
DIN rail
IMC pin connection
(two places)
12 BAS-SVX33F-EN
Installing the Power Supply Module
Repositioning or Removing the Power Supply Module
Follow these steps to reposition or remove the power supply module:
1. Perform the lockout/tagout procedures for line voltage power to the cabinet.
2. Insert a screwdriver into the DIN rail latch and gently pry upward with the screwdriver to
disengage the clip.
Do not use excessive force. Excessive force could cause equipment damage.
3. While holding tension on the DIN rail latch, lift the module upward to remove or reposition.
4. If repositioned, push on the module until the DIN rail latch clicks back into place to secure the
module to the DIN rail.
.
NOTICE:
Avoid Equipment Damage!
Do not use excessive force. Excessive force could cause equipment damage.
Figure 4. Removing the power supply module
PM014
IMC pin connection
(two places)
DIN rail
latch
DIN rail
groove
DIN rail
BAS-SVX33F-EN 13
Installing the Power Supply Module
Power and Field Wiring
After the power supply module has been properly mounted, install input power and field wiring.
Use 18 AWG wire as recommended in Table 4. Refer to Figure 5 for wiring connection locations on
the power supply module. Refer to Table 5 for the recommended connectors.
Note: The maximum wire length for 18 AWG wire is 50 feet (15 m). Longer lengths result in
excessive voltage drop and would then require 16 AWG wire.
Installing Power Input Wire
Follow these steps to install power input wiring:
1. Perform lockout/tagout procedures for line voltage power to the cabinet.
2. Install power input wire for the 24 Vac input connection by using 18 AWG wire and the
recommended connector (
Table 5).
Note: Strip the wire to expose 0.28 in. (7mm) of bare wire for inserting into the terminal blocks.
After tightening the screws, verify that the wire cannot be easily pulled out by lightly tugging
on each wire. For reference, the screw terminals should be tightened to 0.5 to 0.6 N-m (71-
85 Ozf-in, 4.4-5.3 Lbf-in)
Table 4. Recommended wire sizes
Purpose Wire Size
Power input terminals 18 AWG
Field-wiring connections 18 AWG
Figure 5. Wiring connections
PM014
24
VAC
XFMR
OUT
24
VAC
Table 5. Recommended connectors
(a) The + and - terminals are for the IMC bus comm lines. The power
supply module transmits IMC communication signals and can provide
power to connected modules. Module s can be wired into one of the
connectors to obtain access to power and communications for the en-
tire IMC link.
(b) The 24 Vac input connection must be connected to functional earth
ground for referencing the IMC bus and for electromagnetic compat-
ibility.
Location Description
Recommended
Connector
1
IMC pin connection
CAB01202 or
CAB01203
2
IMC plug-type terminal block
(a)
CON00431
3
IMC plug-type terminal block
(a)
CON00431
4
IMC pin connection
CAB01202 or
CAB01203
5
24 Vac output CON00429
6
(b)
24 Vac input CON00429
1
6
3
5
2
4
14 BAS-SVX33F-EN
Installing the Power Supply Module
Grounding the Power Supply Module
Important: To ensure proper operation, the power supply module must be grounded.The
preferred grounding location for the power supply module is at the 24 Vac input
connection.
Important: Trane does not recommend connecting the ground wire to one leg of the 24 VAC
transformer output at the transformer lead.
Installing Field Wire
Note: Use the 24Vac output connection if daisy-chaining unit control modules to the power supply
module.The current drawn through this connection should not exceed 3 Aac.
Figure 6. Grounding the Power Supply Module
+24
VAC
+24
VAC
OUT XFMR
24 Vac transformer
24 Vac input connection
Ground wire
Transformer
return wire
Install both the ground wire and the
transformer return wire into the same
connection terminal.
Lower portion of PM014
NOTICE:
Avoid Equipment Damage!
All field-installed wiring must be completed by qualified personnel. All field-installed wiring
must comply with applicable local codes. Failure to follow this instruction could result in
equipment damage.
BAS-SVX33F-EN 15
Installing the Power Supply Module
Separating the IMC Bus for Large Systems
For large systems with heavier loads than the PM014 can power alone, the IMC bus can be
separated into sections that are sized for single power supply modules. Follow the recommended
method described below to separate the IMC bus. An alternative method is also described on p. 16.
Note: The power supply module is not designed to supply power in parallel with other power
supplies.
Recommended method for separating the IMC bus
Note: This method preserves the power supply module warranty.
3. Perform lockout/tagout procedures for line voltage power to the cabinet.
4. Using two parallel DIN rails, position two power supply modules directly above or beneath one
another as shown in
Figure 7.
5. Wire the two power supply modules together by using the IMC terminal blocks. Do not wire the
Vdc terminals.
Important: To prevent power flow between modules, the Vdc terminals must not be wired.
Figure 7. Recommended method when separating the IMC bus
PM014
PM014
24
VAC
XFMR
OUT
24
VAC
24
VAC
XFMR
OUT
24
VAC
24 Vdc
terminal
24 Vdc
terminal
16 BAS-SVX33F-EN
Installing the Power Supply Module
Alternative method for separating the IMC bus
Note: This method should be used only when the recommended method is not an option.
1. Perform lockout/tagout procedures for line voltage power to the cabinet.
2. Cut and remove the 24 Vdc wire (innermost wire) from the IMC connection on both the power
supply module and the unit control module as shown in
Figure 8.
Note: Removal of the innermost wire eliminates the power flow.
Starting Up the Power Supply Module
Follow these steps to start up the power supply module:
1. Ensure that input voltage is 24 Vac.
2. Remove the lockout/tagout from line voltage power to the electrical cabinet.
3. Apply power.
Note: Initially, the power supply module may take up to 10 seconds to start. Subsequent starts take
approximately 2 seconds.
Figure 8. Alternative method for separating the IMC bus
PM014
PM014
24
VAC
XFMR
OUT
24
VAC
24
VAC
XFMR
OUT
24
VAC
IMC pin connector
(power supply module)
Innermost wire removed
IMC pin connector
(unit controller module)
Ground connection:
must be maintained for
proper communication
between modules.
WARNING
Hazardous voltage!
Connection to voltages beyond ratings will cause shock and fire hazards and damage
anything connected to the power supply.
BAS-SVX33F-EN 17
Operation and Troubleshooting
This section describes normal operations and troubleshooting for the power supply module.
Operational Features
• A status LED indicates the status of the output voltage. When lit, it indicates that the power
supply has started properly and that the output voltage is above minimum level.
• If power is lost, the output voltage will remain within the specifications outlined in Table 2, p. 8
for at least 50 ms.
• The power supply module can tolerate a brief short circuit on the output and will auto-retry after
removal of the short.The average input current is approximately 2 A if the power supply module
output is shorted out.
Note: There are no serviceable components inside the power supply module. Replace upon
failure.
Troubleshooting
During normal operation, the status LED on the power supply module will illuminate green
continuously.The following table contains status LED activity indicators and suggested
troubleshooting solutions for non-normal status LED modes.
If the following troubleshooting recommendations reveal no problems, you may need to replace
the power supply module. Remove the power supply as instructed in “Repositioning or Removing
the Power Supply Module,” p. 12.
Table 6. Status LED Activity
LED activity Indicates... Troubleshooting notes
LED is solid green Normal operation
After initially applying power, it may
take up to 10 seconds for the status
LED to illuminate solid green.
LED is not lit
Power is OFF or a possible overload has
shut down the device.
• Verify that 24 Vac power wiring is
connected correctly.
• Measure the input voltage to verify that
it is within the rated range (Figure 9,
p. 18).
• Check for continuity to ensure that the
output wiring is not shorted.
• Disconnect the load and verify correct
operation by measuring output voltage
(Figure 10, p. 18).
• Take into consideration other loads that
are on the 24 Vac transformer.
LED is blinking
The device is operating at an
overcurrent situation. Too much
output voltage has dropped below
specifications.
• Verify that the load is correctly sized for
the power supply module.
• Measure the output voltage to verify
that it is within the rated range
(Figure 10, p. 18).
• Ensure that other modules are not
switching on loads and causing the load
current to exceed the recommended
rating.
18 BAS-SVX33F-EN
Operation and Troubleshooting
Figure 9. PM014 24 Vdc Output (DC measurement)
V
AC
A
DC
V
DC
IMC
IMC
IMC
+24
DC
IMC
+24
DC
24
VAC
2
4
V
AC
XFMR
OUT
V
AC
A
DC
V
DC
LOAD
Note: Do not take the voltage measurements from the setscrew tops of
the IMC connectors. This is not a reliable contact.
Measurement Expected Value
Measure DC voltage across the 24 Vdc output termination
Compare to expected value based on request
from PM014 specification (see Table 2, p. 8)
Figure 10. PM014 24 Vac Output (AC measurement)
V
AC
A
DC
V
DC
IMC
IMC
IMC
+24
DC
IMC
+24
DC
24
VAC
24
VAC
XFMR
OUT
Note: Do not take the voltage measurements from the setscrew tops of
the IMC connectors. This is not a reliable contact.
120 Vac
24 Vac
Measurement Expected Value
Measure AC voltage across the 24 Vac output termination
Compare to expected value based on request
from PM014 specification (see Table 2, p. 8)
BAS-SVX33F-EN 17Jan 20 18
Supersedes BAS-SVX33E-EN (08 Mar 2016)
©2018 Ingersoll Rand
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without notice.
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