Trane Liquid-Cooled Adaptive Frequency AFDE Installation And Maintenance Manual

Installation, Operation, and Maintenance

Models

AFDE

X39641074060

Liquid-Cooled Adaptive
Frequency™ Drive
with Tracer® AdaptiView™ Control

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.

June 2020

AFDE-SVU02F-EN

Introduction

X39003893001A

Read this manual thoroughly before operating or servicing
this unit.

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

CAUTIONs

NOTICE

Important Environmental Concerns

Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are refrigerants
that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlorine, Fluorine and
Carbon (HCFCs). Not all refrigerants containing these
compounds have the same potential impact to the
environment. Trane advocates the responsible handli ng of
all refrigerants-including industry replacements for CFCs
and HCFCs such as saturated or unsaturated HFCs and
HCFCs.

Important Responsible Refrigerant
Practices

Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technicians who handle
refrigerants must be certified according to local rules. For
the USA, the Federal Clean Air Act (Section 608) sets forth
the requirements for handling, reclaiming, recovering and
recycling of certain refrigerants and the equipment that is
used in these service procedures. In addition, some states
or municipalities may have additional requirements that
must also be adhered to for responsible management of
refrigerants. Know the applicable laws and follow them.

Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.

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.

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.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and
allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

• Customers are responsible for all field wiring in
compliance with local, national, and/or international
codes.

© 2020 Trane AFDE-SVU02F-EN

Introduction

WARNING

Personal Protective Equipment (PPE)
Required!

Failure to wear proper PPE for the job being undertaken
could result in death or serious injury. Technicians, in
order to protect themselves from potential electrical,
mechanical, and chemical hazards, MUST follow
precautions in this manual and on the tags, stickers,
and labels, as well as the instructions below:

• 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 Safety Data Sheets
(SDS) and OSHA guidelines for proper PPE.

• When working with or around hazardous chemicals,
ALWAYS refer to the appropriate 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 VOLTAGE
TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.

Copyright

This document and the information in it are the property of
Trane, 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.

Revision History

• Updated Model Number Descriptions chapter.

• Added Installing External 120 Vac Control Power
section to Input Power and Control Wiring chapter.

• Running edits.

WARNING

Follow EHS Policies!

Failure to follow instructions below could result in
death or serious injury.

• All Trane personnel must follow the company’s
Environmental, Health and Safety (EHS) policies
when performing work such as hot work, electrical,
fall protection, lockout/tagout, refrigerant handling,
etc. Where local regulations are more stringent than
these policies, those regulations supersede these
policies.

• Non-Trane personnel should always follow local
regulations.

AFDE-SVU02F-EN 3

Table of Contents

General Information . . . . . . . . . . . . . . . . . . . . . 5

About This Manual . . . . . . . . . . . . . . . . . . . . 5

Other Required Manuals . . . . . . . . . . . . . . . . 5

Cabinet Servicing . . . . . . . . . . . . . . . . . . . . . . 5

Service Information . . . . . . . . . . . . . . . . . . . . 5

Parts Ordering Information . . . . . . . . . . . . . 5

Motor Checks . . . . . . . . . . . . . . . . . . . . . . . . . 6

Controller Checks . . . . . . . . . . . . . . . . . . . . . . 6

AFDE Checks . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Safety Precautions . . . . . . . . . . . . . . . . . . . 7

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

CE for AFDE Drives . . . . . . . . . . . . . . . . . . . 10

AFDE Information . . . . . . . . . . . . . . . . . . . . 11

Model Number Descriptions . . . . . . . . . . . . . 12

Model Number Digit Identification . . . . . . 12

Drive and Cabinet . . . . . . . . . . . . . . . . . . . . . . . 13

Enclosure Rating . . . . . . . . . . . . . . . . . . . . . 13

Environmental Conditions . . . . . . . . . . . . . 13

Identifying Trane AFDE Cabinet Components

13

Drive Cabinet Component Locations . . . . 13

Frame 3 Units

179910-903 and 179910-905 . . . . . . . . . . 13

Power Module Component Locations . . . 17

Frame 3 Units

LF200405AAP and LF200608CCP . . . . . . 17

Drive Cabinet Component Locations . . . . 20

Frame 4 Units

180180-A07 and 180180-A09 . . . . . . . . . . 20

Power Module Component Locations . . . 23

Frame 4 Units

LF200900CCP and LF201215CCP . . . . . . . 23

About the Cabinet . . . . . . . . . . . . . . . . . . . . 26

Drive Removal . . . . . . . . . . . . . . . . . . . . . . . 28

Lifting the Drive . . . . . . . . . . . . . . . . . . . . . . 29

Input Power and Control Wiring . . . . . . . . . . 31

Installing Input Power Wiring Standard Cabi­net

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Installing External 120 Vac Control Power 32

Torquing Electrical Power Connections . 32

Cabinet Wire Routing . . . . . . . . . . . . . . . . .32

Wire Routing . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Wire Sizing . . . . . . . . . . . . . . . . . . . . . . . . . 32

Grounding the Cabinet . . . . . . . . . . . . . . .33

AFDE Cooling Circuit . . . . . . . . . . . . . . . . . . . . .35

Liquid-Cooling Connections . . . . . . . . . . . . . .36

Factory Connected on Unit Mounted Drives

36

UC800 AFD Operation . . . . . . . . . . . . . . . . . . . .38

Adaptive Frequency Drive Control . . . . . . .38

Introduction . . . . . . . . . . . . . . . . . . . . . . . .38

Chiller and AFD Sequence of Operation .38

Compressor Pressure Coefficient . . . . . . .38

Surge Boundary . . . . . . . . . . . . . . . . . . . . .38

AFD Speed Control . . . . . . . . . . . . . . . . . .39

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Re-optimization . . . . . . . . . . . . . . . . . . . . .40

Surge Recovery . . . . . . . . . . . . . . . . . . . . .41

Surge Detection . . . . . . . . . . . . . . . . . . . . .41

UC800 Interface to Adaptive Frequency Drive
42

Service Interface . . . . . . . . . . . . . . . . . . . . . . . .43

AFD Operator Interface . . . . . . . . . . . . . . . . .43

Tracer AdaptiView Operator Interface . . .43

Tracer TU Service Tool (Laptop Computer) .
43

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . .46

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Alarm Messages and Fault Codes . . . . . . . . .48

AFDE Startup Procedure . . . . . . . . . . . . . . . . . 49

Startup Test Log . . . . . . . . . . . . . . . . . . . . . . . . .51

Recommended Periodic Maintenance and In-

spection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Visual Inspection—Power Removed . . . . . .52

Operational Inspection—Power Applied . .53

Chiller Operator Display Content . . . . . . . .53

Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . .54

4 AFDE-SVU02F-EN

General Information

About This Manual

This manual is intended for use by experienced service
personnel, qualified electrical personnel, Trane service
personnel, and Rockwell automation global technical
service personnel who are familiar with the custom liquid­cooling features described.

The instructions in this manual outline the procedures for
operating the UNIT-MOUNTED Trane Adaptive Frequency
Drive. Operation and maintenance of the controls are also
explained in this manual.

Other Required Manuals

The following publication ships with the Trane Adaptive
Frequency Drive from the factory: D2-3496-1, Liqui-Flo 2.0
AC Drive User Manual.

Cabinet Servicing

For information regarding the servicing of drive
components please refer to the appropriate Rockwell
literature.

Service Information

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives or
other energy storing components provided by Trane or
others, refer to the appropriate manufacturer’s literature
for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. If this equipment is
interlocked with other equipment, 115 volts AC may be
present in the cabinet even though the main power is
disconnected. If this is the case, these interlock signals
should be deactivated before any work is performed on
this equipment. Suitable warning tags or disconnects
should be added to these circuits and all circuits should
be tested before attempting to energize or service the
controller.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

This equipment should be installed, adjusted and serviced
by qualified electrical maintenance personnel who are
familiar with the construction and operation of the
equipment and the hazards involved, as defined in the
National Electrical Code. Trane assumes no liability for
installation or service procedures performed by
unqualified personnel.

Parts Ordering Information

Refer to the model number printed on the Trane Adaptive
Frequency Drive nameplate when ordering replacement
parts or service for the drive. When ordering parts, contact
the local Trane Parts Office in your area. For service,
contact a qualified service organization.

NOTICE

Do Not Megohm Test!

Failure to follow instructions below could cause
damage to the controller circuitry. Do NOT use a
megger to perform continuity checks in the drive
equipment.

X39003893001A

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

AFDE-SVU02F-EN 5

General Information

X39003893001A

WARNING

Capacitors Must Be Allowed To
Discharge!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Each time power is removed, allow at least 10 minutes
for DC units to discharge after power is disconnected
before servicing. Use extreme caution when applying
power. Equipment terminals and other internal parts of
the controller are at line voltage when AC power is
connected to the controller. All ungrounded conductors
of the AC power line must be disconnected from the
controller before it is safe to touch any internal parts of
this equipment.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

Motor Checks

If a short circuit exists, it must be corrected before
proceeding.

Controller Checks

4. Check that local, state and national electric codes have
been observed for the installation and wiring of this
equipment.

5. Check that all external power wiring has been properly
routed through the cabinet.

6. Check all input power and output power connections
for tightness.

7. Check the chassis ground and other connections for
tightness.

8. Check all external control connections (this includes
the operator station connections) for tightness.

9. Check to assure incoming power to the drive is phased
A, B, C.

AFDE Checks

NOTICE

Perform Visual Inspection!

Before powering up this drive for the first time conduct
a visual inspection for the following:

• Shipping damage.

• Signs of moisture.

• Signs of debris or dust from storage.

• Signs of corrosion on components and/or enclosure.

These conditions could cause equipment damage. Do
not power up equipment if you have concerns
regarding equipment condition. Upon initial power up,
remain in the area for the first two hours of operation
and observe the chiller and drive for any abnormalities.
Contact CenTraVac™ Technical Support for assistance if
needed.

1. Check the motor for proper horsepower and voltage
ratings. Verify that the motor full load amps do not
exceed the nameplate rating of the controller.

2. Check that the motor terminals are correctly connected
to the controller’s power terminals for the proper
voltage and motor rotation.

NOTICE

Disconnect Motor Leads!

Failure to disconnect all motor leads prior to megging
the motor could cause equipment damage.

3. Use an ohmmeter to check for any short circuits
between the motor frame and the motor power leads.

6 AFDE-SVU02F-EN

General Information

X39003893001A

WARNING

Hazardous Voltage!

Failure to ensure that all enclosure doors are closed and
properly secured with fasteners when operating
equipment could result in death or serious injury.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

Safety Precautions

1. This equipment should be adjusted and serviced by
qualified electrical maintenance personnel familiar
with the construction and operation of the equipment
and the hazards involved.

2. Be sure the input disconnect is in the correct position,
either “on” or “off” depending on the work to be
performed.

3. Check the status of the drive shutdown interlocks, if
used. These interlocks can be limit switches, guards or
safety switches installed around the driven machine or
the system interface controller.

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.

WARNING

Hazardous Voltage!

Failure to follow instructions below could result in
death, serious injury or equipment damage. Do NOT
remove or insert control boards or fuses while input
power is connected to the controller.

WARNING

Hazardous Service Procedures!

Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.

WARNING

Bypassed Electrical Interlocks!

Failure to return all interlocks to operation when the
startup is completed could result in death, serious
injury or equipment damage. The electrical interlocks
provide machine and personal protection. If deactivated
or bypassed for servicing, use extreme caution when
performing the startup.

4. Check to see that the AFDE is properly ground to earth.

“Grounding the Cabinet,” p. 33 in “Input Power

See

and Control Wiring,” p. 31.

AFDE-SVU02F-EN 7

General Information

X39003893001A

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged.

• Before working on the controller, check to be sure
capacitors are discharged with a DC voltmeter on the
1000V scale. Charged capacitors require at least
10 minutes to discharge to less than 50Vdc after line
power is removed.

• Before proceeding with the startup procedure,
disconnect and lockout all incoming power to the
drive controller!

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

8 AFDE-SVU02F-EN

Overview

X39003893001A

WARNING

Hazardous Service Procedures!

Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.

WARNING

Hazardous Voltage!

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

voltage motor terminal box cover must not be removed if
power is present, or if there is a possibility that power may
be present. Working on energized medium voltage circuits
is not an approved practice for normal HVAC maintenance
or service.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

All electrical circuits shall be treated as energized until all
lockout/tagout procedures are in place and the circuit has
been tested to verify that it is de-energized. The medium

AFDE-SVU02F-EN 9

Overview

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives or
other energy storing components provided by Trane or
others, refer to the appropriate manufacturer’s literature
for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. If this equipment is
interlocked with other equipment, 115 volts AC may be
present in the cabinet even though the main power is
disconnected. If this is the case, these interlock signals
should be deactivated before any work is performed on
this equipment. Suitable warning tags or disconnects
should be added to these circuits and all circuits should
be tested before attempting to energize or service the
controller.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

X39003893001A

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

CE for AFDE Drives

WARNING

Capacitors Must Be Allowed To
Discharge!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Each time power is removed, allow at least 10 minutes
for DC units to discharge after power is disconnected
before servicing. Use extreme caution when applying
power. Equipment terminals and other internal parts of
the controller are at line voltage when AC power is
connected to the controller. All ungrounded conductors
of the AC power line must be disconnected from the
controller before it is safe to touch any internal parts of
this equipment.

WARNING

Lockout/Tagout Before Removing Touch­Safe Covers!

Failure to follow instructions regarding touch-safe
covers could result in death or serious injury. Touch-safe
covers inside panels are there for protection and may
be removed if necessary for service only and only after
disconnection of main power supply. Before removing
any touch-safe cover, ensure that there is no line power.
Removal of touch-safe covers would be at the
customer/service personnel’s own risk. After any
service is completed, if the touch-safe covers have been
removed, the touch-safe covers must be replaced to
ensure safety and protection.

Important:

• All Trane-supplied drives must be used with CVHH or

CDHH Trane chillers to ensure CE compliance.

• Basic drive details are provided on drive nameplate.
Please refer to the chiller unit nameplate located on the
chiller-mounted control panel for details on wire sizing
(minimum current ampacity) and overcurrent
protection sizing upstream of unit (maximum
overcurrent protection).

• Always refer to as-built schematic wiring diagram and
the chiller
manual located inside the chiller-mounted control
panel for details on wiring, safety, installation, and
warnings.

Installation, Operation, and Maintenance

10 AFDE-SVU02F-EN

Overview

• Customers are responsible for all field wiring with
respect to EMC and EMI interference. Customers are
responsible for mitigating the risks associated with
EMC and EMI interference that can occur as a result of
customer-provided field wiring as dictated by
international, national, and local codes. This also
implies that customers are responsible for incoming
power wiring to the drive with respect to EMC and EMI
interference.

All customer wiring, including power wiring to drives,
must be separated: 24–27 Vdc, 110–120 Vac, and 380–
600 Vac each must be in separate conduit runs.

The customer is required to provide an overcurrent
protective device upstream of all drives in accordance with
IEC standards and/or any applicable national and local and
codes.

Service personnel must use proper PPE for servicing and
must also use proper lockout/tagout procedures during
servicing: lock the drive disconnect handle before
servicing to prevent accidental pulling of disconnect
handle at the drive panel.

In addition, service personnel should disconnect the main
supply disconnecting device upstream of the drive
performing any service on any part of the chiller.

before

AFDE Information

• Unit displacement power factor of 0.98 or better at full
load and a value of 0.96 at part load.

• Low in rush current.

• The current never exceeds the full load amps.

• The AFDE varies the motor speed in response to the
speed command from the UC800 control.

The CenTraVac™ Control Panel has full control of the unit
operation, including the start/stop functions. If you
encounter a fault condition or an alarm on the drive, the
Tracer® AdaptiView™ display will indicate “alarm” and an
“alarm message.”

This manual covers the features and specifications that are
unique to the Trane Adaptive Frequency Drives being
produced for Trane. Only product information is covered
here that supplements that presented in the standard
LiquiFlo instruction manuals that ship with the unit.

The AFDE refrigerant-cooled Adaptive Frequency Drive is
a pulse width modulated (PWM) design incorporating
both an IGBT (Insulated Gate Bipolar Transistor) active
rectifier and inverter. It is designed for 380–480 volt
application. This drive converts AC powe r to DC power and
back to AC power. The incoming 380–480 volts are
converted to a constant 700 Vdc by the active rectifier, and
into a section of capacitors that are used to store the DC
voltage. The DC output feeds the inverter IGBTs that switch
at predetermined time to change the DC input voltage to a
symmetrical AC output voltage of desired magnitude and
frequency. The output frequency range is 38 to 60 hertz.

The DC voltage is fixed at 700 Vdc. A variable output is
accomplished by PWM control within the inverter by the
IGBTs which are basically transistors that turn on and off
in response to the gate driver.

A combination of two distinct operating modes make up
the AFDE control within the chiller’s UC800 control. First
by controlling the inlet vanes, and second by modulating
impeller speed from 38 to 60 hertz. The IGBTs control the
speed in response to the UC800 compressor control
signal. Circuit breakers, surge capacitors and ground
faults are standard on all AFDE units.

Some of the basic principles of the drive are:

• Less than or equal to 5 percent current harmonic
distortion (TDD).

• Minimum efficiency of 97 percent at rated load and
60 Hz.

AFDE-SVU02F-EN 11

Model Number Descriptions

Model Number Digit
Identification

Model number digits are selected
and assigned in accordance with the
following definitions using the above
model number example:

Digit 1, 2, 3 — Unit Function

AFD= Adaptive Frequency Drive

Digit 4— Development
Sequence

E = Refrigerant-Cooled with Tracer

AdaptiView™ Controls

Digit 5, 6, 7, 8 — Adaptive

Frequency Drive Size

Use Motor Rated Load Amps (NRLA)
Value

Digit 9 — Unit Motor Voltage

F = 460V-60Hz-3Ph
G = 480V-60Hz-3Ph
S=Special

Digit 10, 11 — Design Sequence

A0 = First Design
B0 = Addition of 405 Amp Drive

C0 = Vendor Component Change

Digit 15 — AFD Frame Size
(SSRL)

A = 405
B = 608
C = 900
D = 1210

Digit 16 — Unit Line Voltage and
Frequency (IVLT and IHRZ)

A = 380/50
B = 380/60
C = 400/50
D = 415/50
E = 440/60
F = 460/60
G = 480/60
S = Special Voltage

Digit 17 — Seismic

0 = None
B = With Seismic Cabinet and

Brackets

Digit 18 — Three-Phase Oil
Pump Contactor/Relay

1 = Pilot Relay Only
2 = Pilot Relay to Three-Phase Oil

Pump Starter

Digit 19 — Common Mode Cores

0 = No Common Mode Cores
C = Common Mode Cores

D0 = Addition of 900 Amp Drive

E0 = Revise RECOMM-TRANE

Software
F0 = Tyco Connector/Harness
G0 = Precharge Resistor
H0 = I/F PCBA Connector Change
J0 = Chill Plate Redesign
K0 = Addition of Common Mode

Magnetic Core Choke Mounting

Brackets
L0 = Updated Circuit Breaker and

Control Power Transformer
M0 = Added Line Voltage Digit
N0 = Touch Safe Control Circuit

Fuse Blocks
P0 = Pre-Charge Contactor Reduction

and Back Plate Modification
R0 = New Precharge Contactor
T0 = External 120 Vac hookup,

binding from keypad

Digit 12 — AFD Mounting
Location

A = Unit-Mounted

Digit 13 — Agency Listing

1=UL and CUL
2=CE

Digit 14 — Special Options

0=None
9=Special

12 AFDE-SVU02F-EN

Drive and Cabinet

Enclosure Rating

The Trane® cabinet has a NEMA 1 enclosure rating:

NEMA 1: Vented. Intended for general-purpose indoor
applications.

Environmental Conditions

Important: Location of the AFDE is important if proper

performance and normal operating life is to
be expected. Therefore, unless designed for
special environments, the controller should
be installed in an area where the following
conditions exist

• Verify that NEMA 1 enclosure drives can be kept clean

and dry.

• The area chosen should allow the space required for

proper air flow. Adequate clearance for air circulation
around the enclosure is a 6 inch (15.25 cm) minimum
clearance required wherever vents are located in the
cabinet.

• Be sure that the NEMA 1 enclosure is installed away

from oil, coolants, or other airborne contaminants.

• Do not install the drive above 3300 feet (1000 meters)

without derating output power. For every 300 feet
(91.4 meters) above 3300 feet (1000 meters), derate
the output current 1%.

• Line frequency is 50 or 60 Hz.

• Line Voltage is 380–480 volts; variation are within

10%.

+

• Non-corrosive location.

• Verify that the drive location will meet the

environmental conditions specified in Table 1.

Table 1. Environmental conditions

Con d i t i on Spe ci f ica t i on

Opera t in g Temp er at ure
( in si de NEMA 1 enclosure)

Am b ie nt Tem pera t u r e
( ou t si de NEMA 1 en cl osu r e)

St or age Tem p er at ure ( Am bien t ) -40° F to 14 9 ° F ( -40° C t o 6 5° C)

Hum id it y 5% t o 95 % ( n on - cond en sing )

32 ° to 1 31° F (0° C to + 5 5 ° C)

32 ° F t o 10 4 ° F ( 0 ° C t o + 4 0° C)

Identifying Trane AFDE Cabinet
Components

Trane AFDE cabinets have the following main
components. For convenience, the drive is discussed in
two sections, a rectifier (input) and inverter (output)
sections. See

Figure 4, p. 19, Figure 5, p. 21 and Figure 7, p. 24 for

3, and
Frame 4.

Figure 1, p. 15 and Figure 3, p. 18 for Frame

Drive Cabinet Component
Locations

Frame 3 Units
179910-903 and 179910-905

The main drive components for a Frame 3 unit are listed
below. Each numbered item corresponds to a number in

Figure 1.

1. Circuit Breaker, 600V

2. Circuit Breaker Operating Mechanism

3. Inductor

4. AC Contactor

5. Power Module Assembly (refer to

Figure 4, p. 19 for details)

6. Input Filter Capacitor Assembly

7. Input Filter Capacitor Guard Panel

8. Fans, 115Vac, Inductor (2)

9. Transformer, 3kVA

10. Fan, 115Vac, Contactor

11. Resistors, 100k Ohms, 50W

12. Precharge Resistors

13. Relay, Oil Pump and Control Power Terminals

14. Fuse, Class RK-5, 600V, 15A (2)

15. Fuse, Class CC, 600V, 25A (1)

16. Fuse, Class CC, 600V, 5A (1)

17. Fuse, Class T, 500V, 150A (3)

18. Fuse, Class CC, 600V, 20A (3)

19. Fuse, Class CC, 600V, 1A (3)

20. Ground Lug, 2–600 MCM (for AWG/MCM equivalents
in mm2, refer to

21. Nameplate, Power Module

22. Door Inter-lock

Table 2, p. 31)

Figure 3, p. 18 and

AFDE-SVU02F-EN 13

Drive and Cabinet

23. Line Sync, PCB Assembly

24. Line Sync, PCB Cover

25. Terminal Block, Fans, 6-Position

26. Surge Suppressor

27. OIM

Note: OIM is mounted inside panel for design

sequence P0 and earlier. OIM is mounted
outside panel for design sequence R0 and later.

14 AFDE-SVU02F-EN

Figure 1. Drive components locations: Frame 3 units

L1

L2

W

V

U

L1

L3

L2

L3

12

User-Supplied

Motor Leads

21

5

13

25

19

10

1

2

11

26

9

14

20

3

4

15

16

17

6

7

8

23

24

22

18 27

Drive and Cabinet

AFDE-SVU02F-EN 15

Drive and Cabinet

27

Note:Cores are only used when compressor has steel bearings.

AFD
Enclosure

Figure 2. Magnetic choke

16 AFDE-SVU02F-EN

Power Module Component
Locations

Frame 3 Units
LF200405AAP and LF200608CCP

The main power module components for a Frame 3 unit
are listed below. Each numbered item corresponds to a
number in Figure 3, p. 18 or Figure 4, p. 19.

1. Wire Harness Assembly, Power Supply, Logic

2. Current Feedback Device, 1000 A

3. Terminal Block, 2-position

4. 80W Power Supply Assembly

5. Cable Assembly, 40-pin, 0.050 in (1.27 mm) Pitch, Flex
Film

6. Cable Assembly, 30-pin, 0.050 in (1.27 mm) Pitch, Flex
Film

7. Wire Harness Assembly, Power Supply, Upper Gate

8. Inverter Power Interface Assembly

9. Wire Harness Assembly, Power Supply, Lower Gate

10. Insulation Sheet

11. DPI Communications Interface

12. Rectifier Power Interface Assembly

13. Wire Harness Assembly, Gate Driver

14. Wire Harness Assembly, Current Feedback Device

15. Wire Harness Assembly, Line Sync.

16. Wire Harness Assembly, DC Bus Bleeder Resistors

17. Cable Assembly, 20-pin, 0.050 in (1.27 mm) Pitch, Flex
Film

18. RS-485 Communications Assembly (RECOMM)

19. Internal Fan

20. Connector, Terminal Block, 32-pin

21. AC Line I/O Assembly

22. Rectifier Control Assembly

23. Inverter Control Assembly

24. Standard I/O Board (optional)

25. Synchronization Cable

Drive and Cabinet

AFDE-SVU02F-EN 17

Drive and Cabinet

13

2

14

12

8

10

4

4

10

3

7

7

1

1

9

9

11

6

5

6

5

7

25

Figure 3. Power module component locations door open: Frame 3 units

18 AFDE-SVU02F-EN

Figure 4. Power module component locations door closed: Frame 3 units

22

21

23

20

11

19

17

18

24

20

25

Drive and Cabinet

AFDE-SVU02F-EN 19

Drive and Cabinet

Drive Cabinet Component
Locations

Frame 4 Units
180180-A07 and 180180-A09

The main drive components for a Frame 4 unit are listed
below. Each numbered item corresponds to a number in

Figure 5, p. 21.

1. Circuit Breaker, 600V

2. Inductor

3. AC Contactor

4. Power Module Assembly (refer to

Figure 8, p. 25 for details)

5. Input Filter Capacitor Assembly

6. OIM

Note: OIM is mounted inside panel for design

sequence P0 and earlier. OIM is mounted
outside panel for design sequence R0 and later.

7. Fans, 115Vac, Inductor (4)

8. Transformer, 115Vac, Control Power

9. Fan, 115Vac, Contactor

10. Resistors, 100k Ohms, 50W

11. Precharge Resistors

12. Relay, Oil Pump and Control Power Terminals

13. Fuse, Class J, 600V, 10A (2)

14. Fuse, Class J, 600V, 25A (1)

15. Fuse, Class CC, 600V, 10A (1)

16. Fuse, Class T, 600V, 300A (3)

17. Fuse, Class CC, 600V, 20A (3)

18. Fuse, Class CC, 600V, 1A (3)

19. Ground Lug, 2–600 MCM (for AWG/MCM equivalents
in mm2, refer to

20. Nameplate, Power Module

21. Door Inter-lock (2)

22. Surge Suppressor

23. EMC Line Filter (Optional)

24. Fuse, Class CC, 600V, 6A (3) (Optional)

25. Oil Pump Motor Starter Assembly (Optional)

Table 2, p. 31)

Figure 7, p. 24 and

20 AFDE-SVU02F-EN

Figure 5. Drive component locations: Frame 4 units

L1

L2

L3

L1

L2

L3

U

V

W

11

17

3

9

2

19

23

16

1

10

22

8

13

14

24

15

25

5

21

7

6

2118

4

12

20

Drive and Cabinet

Note: Units with CE certification include touch-safe

barriers (not shown).

AFDE-SVU02F-EN 21

Drive and Cabinet

Note: Cores are only used when compressor has steel bearings.

AFD
Enclosure

Figure 6. Magnetic choke

22 AFDE-SVU02F-EN

Power Module Component
Locations

Frame 4 Units
LF200900CCP and LF201215CCP

The main power module components for a Frame 4 unit
are listed below. Each numbered item corresponds to a
number in Figure 7, p. 24 or Figure 8, p. 25.

1. Combined Power PCB Assembly, 900 Amps

Combined Power PCB Assembly, 1215 Amps

2. Wire Harness Assembly, Gate Driver

3. Internal Fan, 24Vdc

4. Internal Fan, 24Vdc

5. Wire Harness Assembly, Internal Fan

6. Wire Harness Assembly, DC Power

7. Wire Harness Assembly, DC Bus Resistors (under top
cover)

8. Current Feedback Device, 2000 A

9. Wire Harness Assembly, Current Feedback Device,
Rectifier Side

10. Wire Harness Assembly, Current Feedback Device,
Inverter Side

11. Wire Harness Assembly, RTD, Recitifier Side

12. Wire Harness Assembly, RTD, Inverter Side

13. Cable Assembly, 40-Pin

14. Combined Control PCB Assembly

15. Combined I/O PCB Assembly

16. RS-485 Communications Assembly (RECOMM)

17. Cable Assembly, 20-Pin

18. Cable, Mini DIN, 8 Pos., Male/Male, 3.28 ft (1 meter)
Long

Drive and Cabinet

AFDE-SVU02F-EN 23

Drive and Cabinet

5

3

1

2

9

11

8

12

4

10

6X

96

2X

7

Figure 7. Power module component locations IO and control panel removed: Frame 4 units

24 AFDE-SVU02F-EN

Figure 8. Power module component locations front panel removed: Frame 4 units

18

13

16

17

14

15

2X

Drive and Cabinet

AFDE-SVU02F-EN 25

Drive and Cabinet

11.88

(301.6)

17.21

(437.1)

14.12

(358.8)

27.45

(697.1)

8.24

(209.3)

29.50

(749.3)

24.00

(609.6)

60.00
(1524)

2.38

(60.5)

10.00
(254)

3.25

(82.6)

18.00

(457.2)

3.50

(88.9)

2.313

(58.7)

69.00

(1752.6)

3.50

(88.9)

62.00

(1574.8)

24.00

(609.6)

I n put Wi r ing Panel

10 . 6 x 1 5.3 ( 2 69 . 2 x 38 8. 6)
Ope ni ng w it h co ver re m oved

0. 5 63 (W ) x 1 . 56 3 ( L)
( 14 .3 [ W] x 39. 7 [ L] )

Mou nt ing sl ot (6 )

Du al 120V
Fan Housing

About the Cabinet

This section provides cabinet dimension information and
shows where the wire entry areas and liquid-cooling
connection points are located.

Figure 9, p. 26 shows overall dimensions for Frame 3 units

Figure 10, p. 27 shows overall dimensions for Frame 4

and
units.

Figure 9. Drive cabinet dimensions: Frame 3, in. (mm)

26 AFDE-SVU02F-EN

19.25

OPENING

FRONT VIEW

TRANE AFD LOGO

WARNING HAZARDOUS VOLTAGE

BACK OF
CHILL PLATES

RIGHT END VIEW

INPUT WIRING PANEL OPENING
COVER REMOVED

TOP VIEW

15.00 OPENING

2.75 (69.9)

2.98 (75.7)

19.25

(489.0)

15.00 (381)

8.02

(203.7)

6X 1.38 (35.1)

33.0

(838.2)

5.00

(127.0)

70.36

(1787.1)

75.11

(1907.5)

(4.57

[116.1])

8.43

(214.1)

67.77

(1721.4)

97.79

(2483.9)

26.00 (660.4)

23.00 (584.2)

8.10

(205.7)

2.38

(60.5)

2.93

(74.4)

2.61

(66.3)

25.00 (635)

Figure 10. Drive cabinet dimensions: Frame 4, in. (mm)

Drive and Cabinet

AFDE-SVU02F-EN 27

Drive and Cabinet

2

1

Drive Removal

If you need to temporarily remove the entire drive and
enclosure from the chiller to allow unit installation through
restricted spaces, use the following general information
and instructions.

The maximum weight of the drive and the enclosure is
1520 lb (689 kg) for Frame 3 and 2800 lb (1270 kg) for
Frame 4.

Figure 11. Isolation valves

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives or
other energy storing components provided by Trane or
others, refer to the appropriate manufacturer’s literature
for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. If this equipment is
interlocked with other equipment, 115 volts AC may be
present in the cabinet even though the main power is
disconnected. If this is the case, these interlock signals
should be deactivated before any work is performed on
this equipment. Suitable warning tags or disconnects
should be added to these circuits and all circuits should
be tested before attempting to energize or service the
controller.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

1. Power down the chiller and lockout/tagout the unit.

2. Disconnect the FLEXIBAR (flexible insulated busbar)
conductors at the motor terminals.

3. At the drive, disconnect the control wiring between the
drive and the unit controls. Set the control conduit
aside.

WARNING

1. Ser vice iso lat io n v al v es

2. This v alv e inclu de s a Sch r ad er f it tin g to conn ect ni t r og en.

5. Remove the screws on the back side of the drive that
secure the panels over the refrigerant connections.

WARNING

Hazard of Explosion and Deadly Gases!

Failure to follow all proper safe refrigerant handling
practices could result in death or serious injury.
Never solder, braze or weld on refrigerant lines or any
unit components that are above atmospheric pressure
or where refrigerant may be present. Always remove
refrigerant by following the guidelines established by
the EPA Federal Clean Air Act or other state or local
codes as appropriate. After refrigerant removal, use dry
nitrogen to bring system back to atmospheric pressure
before opening system for repairs. Mixtures of
refrigerants and air under pressure may become
combustible in the presence of an ignition source
leading to an explosion. Excessive heat from soldering,
brazing or welding with refrigerant vapors present can
form highly toxic gases and extremely corrosive acids.

Refrigerant Vapor Hazard!

Failure to follow instructions could result in death or
serious injury. Recover refrigerant before opening and
servicing the component or entire unit as necessary.
Lockout/tagout to ensure a refrigerant valve cannot be
accidentally opened.

4. Close the isolation valves for the AFD cooling lines if
present, both supply and return. Recover refrigerant
present in AFD cooling circuit using Schrader fitting
located on supply isolation valve (see

Important: Lockout/tagout isolation valves AFTER

recovery of refrigerant.

28 AFDE-SVU02F-EN

Figure 11).

Refrigerant May Be Under Positive
Pressure!

Failure to recover refrigerant to relieve pressure or the
use of non-approved refrigerants, refrigerant
substitutes, or refrigerant additives could result in an
explosion which could result in death or serious injury
or equipment damage. System contains oil and
refrigerant and may be under positive pressure.
Recover refrigerant to relieve pressure before opening
the system. See unit nameplate for refrigerant type. Do
not use non-approved refrigerants, refrigerant
substitutes, or refrigerant additives.

WARNING

Drive and Cabinet

6. Loosen and remove the bolts that secure the
refrigerant line flanges to the drive flanges. Take care
not to misplace any orifice plates that may be installed
on the refrigerant inlet.

Important: Any unit pressure must be relieved before

disconnecting refrigerant lines. The units
ship from the factory with a 5 psi (34.5 kPa)
dry nitrogen holding charge.

Lifting the Drive

WARNING

Heavy Objects!

Failure to properly lift unit could result in death or
serious injury. Do not use cables (chains or slings)
except as shown. Each of the cables (chains or slings)
used to lift the unit must be capable of supporting the
entire weight of the unit. Lifting cables (chains or
slings) may not be of the same length. Adjust as
necessary for even unit lift. Other lifting arrangements
may cause equipment or property-only damage.

WARNING

Improper Unit Lift!

Failure to properly lift unit could result in death or
serious injury or possible equipment or property-only
damage. Test lift unit approximately 24 inches (61 cm)
to verify proper center of gravity lift point. To avoid
dropping of unit, reposition lifting point if unit is not
level.

Re-assembly of the drive is essentially the reverse of the
above procedure. The drive enclosure to mounting bracket
bolts should be torqued to 90 ft·lb (122 N·m). The drive
enclosure to motor terminal transition piece or terminal
board should be torqued to 21 ft·lb (28.5 N·m).

WARNING

Improper Unit Lift!

Failure to properly lift unit could result in death or
serious injury or possible equipment or property-only
damage. Test lift unit approximately 24 in. (61 cm) to
verify proper center of gravity lift point. To avoid
dropping of unit, reposition lifting point if unit is not
level.

7. Use an overhead or portable hoist (minimum 2-ton
[907 kg] rated capacity) and connect it to the enclosure
using slings or chains. Rig in a manner that will
equalize the load at the pickup points. Use a spreader
bar if the angle of the sling or chains is less than 45°
relative to the horizontal. Take up the vertical slack. A
fork lift truck or similar means of lifting or transporting
the drive may also be used if care is taken. See

Figure 12.

8. Loosen and remove the bolts that secure the drive
enclosure to the motor terminal transition piece or
terminal board.

9. Loosen and remove the bolts that secure the drive
enclosure to the lower mounting brackets.

10. Carefully lift the drive away. Do not bump or jolt the
drive while lifting.

11. Store the drive in a clean and dry location with ample
air circulation and heat to prevent condensation from
occurring. Always protect the drive from dirt and
moisture. If it is necessary to cut and remove the
mounting brackets below the drive, it is recommended
that alignment or “fish” plates be field constructed to
assure the brackets are properly re-aligned when they
are reinstalled.

AFDE-SVU02F-EN 29

Drive and Cabinet

Lif t Point s

Fr a m e 3

Lif t Points

Fr a m e 4

Figure 12. Lift point locations for LiquiFlo 2.0 drives

Frame 3 drives (608 Amp and 405 Amp) have an orifice
plate located between the inlet flange and the heat sink.
The orifice plate sits between two gaskets.

Frame 4 drives have no orifice plate.

Use new gaskets when reconnecting the refrigerant lines
to the drive (see

Figure 14, p. 36).

Note: Refer to “Liquid-Cooling Connections,” p. 36 for

detailed instructions. Ensure any orifice is also
correctly re-installed. Refrigerant line flanges with
1/2-in. (1.3 cm) bolts must be torqued to 70 ft·lb
(94.9 N·m). Refrigerant line flanges with 5/16-in.
(0.8 cm) bolts must be torqued to 17 ft·lb
(23.0 N·m). The FLEXIBAR (flexible insulated
busbar) connections to the motor terminals should
be torqued to 27 ft·lb (36.6 N·m).

30 AFDE-SVU02F-EN

Input Power and Control Wiring

Installing Input Power Wiring
Standard Cabinet

For AWG/MCM equivalents in mm2, refer to Table 2:

Table 2. Wire sizing reference

AW G/ M CM m m2 e q u i v a l e n t

22 0. 3 2

21 0. 3 5

20 0. 5

18 0. 7 5

17 1. 0

16 1. 5

14 2. 5

12 4

10 6

810

616

425

2 or 1 35

1/ 0 50

2/ 0 70

2/ 0 or 3 / 0 95

4/ 0 or 2 50 120

30 0 150

35 0 or 4 00 18 5

45 0 or 5 00 24 0

Note: AWG = Am erica n W ir e Gau ge

Important: Customers are responsible for all field

wiring in compliance with local, national,
and/or international codes.

Use the following steps to connect AC input power to the
cabinet:

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

Note: Graphic labels (shown above) are used for CE

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

Load Side Wiring!

Failure to route the wires through the cores could result
in bearing damage. The electrical wiring from the drive
output to the motor must be routed through the
magnetic cores. The cores are used to protect the
motor bearings.

1. Turn off, lock out, and tag the input power to the drive.

2. Remove the 12 x 17 in. (30.5 x 4 cm) panel from the top
left of the drive enclosure.

Equipment Failure!

Failure to follow instructions below could result in
damaged equipment. Do not cut holes in adaptive
frequency drive enclosure. Debris falling inside of
adaptive frequency drive could cause failure of
electronic components.

3. Once removed, drill the wire routing holes in the panel.
These wire routing holes are the only entry points for
input power wiring into the cabinet.

4. Install the appropriate conduit hubs.

5. Reinstall the cabinet’s top panel.

6. Connect the three-phase 380–480Vac input power
leads:

a.

X39003893001A

application only.

NOTICE

NOTICE

For non-CE units, connect the input power leads to
circuit breaker terminals L1, L2, and L3.

AFDE-SVU02F-EN 31

Input Power and Control Wiring

b. For CE units, connect the input power leads to the

L1, L2, and L3 terminals located

filter

.

7. Tighten connections to 30 ft·lb (40.7 N·m). Use only
copper conductors for the input power leads.

Input power wiring should be copper and should be
sized according to applicable codes to handle the
drive’s continuous rated input current.

Refer to submittals for power lug sizes and location along
with control wiring specifics for the controller.

Important: Power connections should be re-torqued

after the first three to six months of
operation and on an annual basis thereafter.

before the EMC line

Installing External 120 Vac Control Power

The 120 Vac control power for the unit is typically
generated by the Control Power Transformer (CPT) that is
installed in the AFDE panel. Some customers may wish to
use external 120 Vac control power, such as from an
Uninterruptable Power Supply (UPS). Design sequence T0
and later includes standard terminal blocks to hookup
external 120 Vac control power. Follow the instructions on
the schematic to install.

Torquing Electrical Power Connections

Use a torque wrench to tighten power connections.
A torque wrench eliminates the human element and
provides proper hardware tightening.

Proper torque for connections depends on both the bolting
materials and the metals being connected. Strand
migration will occur when the copper is under prolonged
pressure.

Electrical power terminations should be rechecked for
tightness when the apparatus is first installed and
periodically afterwards. The conductor could flow under
prolonged pressure. Thermal cycling will be greater
during the first few months in operation.

Most hardware used for making a bolted electrical joint
will be low carbon steel. The hardware does not carry
electrical current but holds the two conducting surfaces
together under pressure. When properly torqued, the
slight elongation of the bolt or screw acts to maintain
pressure on the electrical joint. The thermal expansion of
steel is less than that of the conducting metals, which is
usually copper.

The pressure at the electrical joint will vary slightly during
thermal cycling and reduces somewhat when there is cold
flow in the conducting metals. Re-torquing will re­establish the surface pressure, which is essential to
keeping a low resistance drop between the two
conducting surfaces and avoiding eventual failure.

Note: Connection from the AFDE output to the motor is

made with FLEXIBAR. PROPER TORQUE IS
“CRITICAL.” See

Table 3.

Table 3. Torque value for AFDE output to motor

FLEXIBAR (flexible insulated busbar)

Bolt Siz e To r q u e V a l u e

3/ 8 in. 30 ft · lb ( 40. 7 N· m )

M10 44 f t · lb ( 6 0 .0 N· m )

1/ 2 in. 75 ft ·lb ( 101 . 7 N· m )

NOTICE

Equipment Damage!

When tightening FLEXIBAR® (flexible insulated busbar)
connections at the drive terminals, take care not stress
the IGBTs. The IGBTs are connected to the other end of
the terminal bar, and stressing them could cause
equipment damage.

Cabinet Wire Routing

All wiring should be installed in conformance with the
applicable local, national, and international codes (for
example, NEC/CEC). Control wiring enters the cabinet
through the right side and terminates at the control panel’s
terminal block. Tighten the control wire connections to

7.1 to 8.9 in·lb (0.8 to 1.0 N·m).

Wire Routing

Wire Sizing

Care should be taken to see that all interconnection wiring
and ground wiring is sized and installed in conformance
with the National Electrical Code (NEC), the National Fire
Protection Association (NFPA), or the Canadian Electrical
Code (CEC) as applicable, and other appropriate local
codes. Refer to controller and motor nameplates for
electrical data.

32 AFDE-SVU02F-EN

WARNING

X39003893001A

Hazardous Voltage/Improper Grounding!

Hazardous voltage due to improperly grounded
electrical components could result in death or serious
injury. The motor controller has a chassis ground that
must be connected to an earth ground.

Input Power and Control Wiring

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

Note: Graphic labels (shown above) are used for CE

application only.

Table 4. Standard wiring requirements AFD control wiring (between the chiller and the starter)

Con t ro l P a n e l Ter m inat ions Com m e n t

AFD S t a r t er t o Con tr o l Pa n el
Con t rol W irin g

AFD 12 0 Vac Power Supp ly (h o t ) 2X1- 1 1X1- 1 1X1 - 1

AFD 12 0 Vac Power Supp ly ( n eut ral) 2X1 - 1 5 1X1 - 12

Gro und 2X1 - 11 1X1 - G 1X1 - G Panel gr oun d .

Ref/ Oil Pum p I nte r lo ck ( 2K11) 2X1 - 7, 2 X1 - 8

Cond en se r Hig h Pressu r e Cu t ou t ( 3 S1 )

Recom m Bu s + 24 V 2A32 - 1 WB2 t o 1 A1 , J4- 1 WB2 t o 1 T2 , J4 - 1

Recom m Bu s Grou nd 2A3 2 - 2 WB2 t o 1 A1 , J4 - 2 WB2 t o 1 T2 , J4 - 2

Recom m Bu s Com + 2 A3 2 - 3 WB2 t o 1 A1 , J4 - 3 WB2 t o 1 T2 , J4- 3

Recom m Bu s - 2A32 - 4 WB2 t o 1 A1 , J4- 4 WB2 t o 1 T2 , J4- 4

St a r te r Pan e l
Te rm ina ti on s

2X1- 3, 2 X1 - 4
( shield to 2 X1 - 5 )

Grounding the Cabinet

Note: Follow Applicable Codes! The user is responsible

for conforming to all applicable, local, national, and
international codes. Failure to observe this

CVH E, CV H F,
CVH G CVH H

LLI D 1 A7
J2- 4 , J2 - 2

N/ A N/ A

LLI D 1 K1 7
J2- 3 , J2 - 1

is capable of accepting up to 2–600 MCM wire. For
AWG/MCM equivalents in mm2, refer to
Tighten the ground connections to 375 in·lb
(42.4 N·m).

Nor m ally op en.

Nor m all y close d. Op era tes t he gat e ki ll
in pu t on 2 A2 - TB33 .

4- wir e b us WB2 con n ects t o p ow er
supp ly m odu le , t erm ina ls J4 - 1 , 2 , 3 ,
an d 4

precaution could result in damage to, or
destruction of, the equipment.

Use the following steps to ground the cabinet:

1. Open the left-hand enclosure door of the drive. The
grounding stud is located just above and to the right of
the breaker.

2. Run a suitable earth ground (completed by field) to the
cabinet’s ground connection point. The grounding lug

Table 2, p. 31.

AFDE-SVU02F-EN 33

Input Power and Control Wiring

X39003893001A

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.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

NOTICE

Equipment Damage!

Failure to follow instructions below could result in
damage to equipment. Do not route signal and control
wiring with power wiring in the same conduit. This can
interfere with drive operation.

An input disconnect circuit breaker is factory-installed in
the cabinet. Verify that the available fault current is less
than the interrupting rating on the circuit breaker
nameplate, which is 65,000 amps at 480 Vac.

34 AFDE-SVU02F-EN

AFDE Cooling Circuit

Conde n ser

Ref r iger ant
Supp ly
Lin es

Ref r iger ant
Ret ur n
Lin es

Ref r i g er ant
Pum p

AFDE

Chill er
Mot or

The AFDE Adaptive Frequency Drive is cooled with liquid
refrigerant from the chiller. The refrigerant pump on the
chiller takes refrigerant from the condenser sump and
pushes it upwards to the motor to provide motor cooling.
The AFDE taps into this refrigerant flow and diverts a
portion of the refrigerant to the drive.

The refrigerant coolant enters the drive through the lower
flange fitting(s) on the back of the drive enclosure. The
refrigerant flows upwards through the drive and removes
heat from the assembly. The refrigerant exits the drive at
the top flange fitting(s) and flows to join the refrigerant
return from the motor, which then flows to the condenser.
Frame 3 (405A, 608A) utilizes a single chill plate.

Figure 13. Schematic of the cooling circuit

A small orifice is installed in the lower flange inlet at the
drive. The purpose of the orifice is to regulate the amount
of refrigerant that enters the drive. Frame 4 (900A, 1210A)
utilizes dual chill plates. No orifices are used on the lower
flange inlets.

The differential pressure across the refrigerant pump is
normally 10 to 15 psid (68.9 to 103.4 kPad).

The temperature within the drive is monitored by the drive
controls and is displayed on the chiller’s Tracer AdaptiView
display. The UC800 shuts the chiller down if the displayed
drive temperature exceeds 185°F (85°C).

The AFDE is not water-cooled, so water-cooling loop
maintenance is NOT needed for the drive.

AFDE-SVU02F-EN 35

Liquid-Cooling Connections

Factory Connected on Unit
Mounted Drives

WARNING

Contains Refrigerant!

System contains oil and refrigerant and may be under
positive pressure. Recover refrigerant to relieve
pressure before opening the system. See unit
nameplate for refrigerant type. Do not use non­approved refrigerants, refrigerant substitutes, or
refrigerant additives. Failure to follow proper
procedures or the use of non-approved refrigerants,
refrigerant substitutes, or refrigerant additives could
result in death or serious injury or equipment damage.

Figure 14. Coolant lines

Out let

Tor que t o 7 0 f t · lb ( 9 4 . 9 N·m )

1- 1/ 8 i n. (2. 9 cm ) OD

I n let

Tor que t o 1 7 f t · lb ( 2 3 . 0 N·m )

5/ 8 in. ( 1 . 6 cm ) OD

Fr a m e 3

( 40 5 a n d 6 08 Am p)

Out let

Tor que t o 7 0 f t · lb ( 9 4 . 9 N·m )

1- 1/ 8 in. ( 2 . 9 cm ) OD

I n le t

Tor que t o 1 7 f t · lb ( 2 3 . 0 N·m )

5/ 8 in. ( 1.6 cm ) OD

Fr a m e 4

( 90 0 a n d 1 21 0 Am p)

36 AFDE-SVU02F-EN

Refrigerant coolant lines connect to the cabinet through
flange fittings located on the rear of the cabinet. A panel
must be removed to provide access to the flange
connections. If you have removed the refrigerant cooling
lines for field disassembly or repairs use the following
steps to re-connect the coolant lines to the cabinet (see

Figure 14).

1. Be sure the flange fittings on the cabinet and the
CenTraVac chiller’s tubing are free of dirt, burrs, and
excessive nicks.

2. On both the inlet and outlet connections place a new
flange gasket over the studs on the back side of the
drive.

3. Align the chiller tubing and flanges over the studs on
the drive so that the flanges are straight and parallel.
Place the proper washers and nuts over the studs and
snug them up by hand. Be careful to maintain the
parallel alignment of the flanges.

4. Use a socket and torque wrench to further tighten the
flange bolts to their proper torques. Tighten the flange
bolts in small equal steps to ensure an equal draw­down of the flange onto the gasket.

Flange Bolt Torques:
1/2-in. bolts = 70 ft·lb (94.9 N·m)
5/16-in. bolts = 17 ft·lb (23.0 N·m)

5. Inspect the connections for leaks.

Liquid-Cooling Connections

AFDE-SVU02F-EN 37

UC800 AFD Operation

Adaptive Frequency Drive Control

Introduction

Achieving Efficiency

Adjustable speed impeller control is used to improve
CenTraVac™ efficiency at part-load while tower relief is
available. This occurs because the addition of the variable
frequency drive gives the chiller control an extra degree of
control freedom. The combination of inlet guide vane
position and variable speed creates the possibility to
control both chiller capacity and compressor efficiency. By
manipulating speed and inlet guide vane position it is
possible to adjust the aerodynamic loading on the
compressor to operate in a region of higher efficiency.

Challenges

There are challenges associated with achieving high
efficiency. The region of higher efficiency is near the
compressor surge boundary. Surge occurs when the
compressor can no longer support the differential
pressure required between the evaporator and condenser.
Reducing compressor speed can improve efficiency;
however, at some point the reduced impeller speed does
not add enough dynamic pressure to the discharged
refrigerant. When the total pressure (static + dynamic)
leaving the compressor is less than the condenser
pressure, refrigerant will start to flow backwards from the
condenser. The flow reversal from the condenser to the
compressor discharge creates a sudden loss of the
dynamic pressure contribution from the compressor.
Refrigerant flows backwards through the compressor
creating an unpleasant audible noise. Surge is avoided
when possible because it causes a loss of efficiency and
cooling capacity if the compressor is allowed to cycle in
and out of surge for an extended period.

compressor speed to achieve a desired compressor
loading command while holding a fixed margin of safety
between the compressor operating point and compressor
surge. In order to quantify nearness to surge, a non­dimensional parameter called “compressor pressure
coefficient” is used as a measure of surge potential.
Decreasing motor speed increases the compressor
pressure coefficient. The goal of the AFD control algorithm
is to reduce speed enough to increase the pressure
coefficient to the surge boundary.

Compressor Pressure Coefficient

The non-dimensional pressure coefficient is derived
based on turbo machinery principles. Fundamentally, the
pressure coefficient is the ratio between the potential
energy based on the pressure rise across the compressor
and the kinetic energy of the refrigerant at the compressor
discharge. This normalized equation uses enthalpy
change across the compressor as a measure of potential
energy and compressor parameters such as average
impeller diameter, speed, and number of stages, to
determine kinetic energy.

The kinetic energy can be reduced by reducing the
condenser pressure. To achieve condenser pressure
reduction, reduce the temperature of the entering tower
water. To obtain the best efficiency, follow a tower relief
schedule at part loads.

Surge Boundary

Surge boundary is a non-linear, empirically derived
function of the compressor load. For the UC800, the
compressor pressure coefficient boundary is defined as a
function of IGV position as shown on

Figure 15.

Solutions

The adjustable speed control algorithm of the Tracer®
UC800 control was developed to operate near the surge
boundary by periodically testing to find the surge
boundary and then holding conditions at an optimal
distance from surge. Once the optimal operating condition
is found the algorithm can avoid the surge in the future.
When surge is detected, a surge recovery routine makes
adjustments to move out of surge, reestablish stabile
operating conditions, and adjust the control boundary to
avoid surge in the future.

Chiller and AFD Sequence of Operation

In the UC800, the chiller/AFD sequence of operation is
identical to a standard fixed speed chiller. Chiller capacity
control, safeties, and limits work in the same manner
regardless of whether an AFD is present.

The UC800’s AFD speed control algorithm will
simultaneously set Inlet Guide Vane (IGV) position and

38 AFDE-SVU02F-EN

Figure 15. Pressure coefficient surge boundary

0.0

0.6

0.7

0.8

0.9

1.0

1.1

1.2

10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0

100.0

Surge Boundary

Surge

IGV Position

Pressure Coefficient

UC800 AFD Operation

AFD Speed Control

UC800 control utilizes an enhanced control method
capable of simultaneously adjusting compressor speed
and inlet guide vane position to achieve the desired chiller
capacity and pressure coefficient. At the heart of the
control is a match model that describes the relationship
between control parameters and actuators. This model
has converted a complicated multi variable control
problem to a system of algebraic equations. The equations
cannot be solved directly, so a binomial search algorithm
is used iteratively to find a solution. A new solution is
found every 5 seconds. This is possible because of the
increased performance of the microprocessor available
with the UC800.

Startup

The starting speed for AFD under UC800 control will vary
depending upon the pressure ratio across the compressor.
For most starts, the pressure ratio will be small and the
AFD will start at its minimum speed. The speed will be
adjusted every 5 seconds in response to changing
pressure ratio and load requirements.

On startup, shell pressures and temperatures may not
correspond to saturated conditions. To avoid potential
surge on start, the boundary pressure coefficient will be
reduced by 0.2 below the last running condition, and over
40 minutes adjusts itself towards the last running
condition. This allows for the stabilization of pressures
and water loop conditions. After reaching this condition
the control will do a re-optimization.

AFDE-SVU02F-EN 39

UC800 AFD Operation

0.0

0.6

0.7

0.8

0.9

1.0

1.1

1.2

10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0

100.0

Pressure Coefficient Trajectory
Start to Full Load

Running surge boundary

Pressure Coefficient

Surge boundary for start up

Boundary increases by 0.1
after 30 minutes

IGV % Capacity

Full load

Figure 16. Startup surge boundary

Re-optimization

The AF Surge Boundary Offset Coefficient is a user settable
parameter to be used for adjusting the surge boundary
either higher or lower. In addition to being user settable,
the surge control algorithm will periodically readjust this
boundary. This re-optimization will occur when any of
three different criteria are met.

1. After startup stabilization the control will re-optimize
unless the surge is detected in that time period.

2. Every 30 minutes, the control will compare the current
IGV position with the IGV position at the end of the last
re-optimization time and, if greater than the user
adjustable sensitivity, will re-optimize.

3. When the re-optimization timer expires.

The control is re-optimized by increasing the AF Surge
Boundary Offset Coefficient every minute until surge
occurs. When surge occurs, the control will go into surge
recovery until the surge flag is removed and all of the re­optimization timers will reset.

40 AFDE-SVU02F-EN

Figure 17. Boundary re-optimization

0.0

0.6

0.7

0.8

0.9

1.0

1.1

1.2

10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0

100.0

Pressure Coefficient Optimization

Pressure Coefficient

Surge detected

IGV % Capacity

Present
Sampled
Value

Previous
Sampled
Value

Rectified
Motor
Current

Transitory
Pressure
Breakdown

Pressure
Rebuilding

1 Surge
Occurrence

Time

UC800 AFD Operation

Surge Recovery

When surge occurs, the pressures in the evaporator and
condenser shells can become erratic. Surge recovery is
needed to force conditions out of this unstable operating
point. This is accomplished by reducing the pressure
coefficient every 90 seconds of continuous surge. In
addition, when the surge flag is set, the compressor speed
command is increased by 1 Hz every 5 seconds until the
surge condition clears. When the surge flag is removed,
the speed command will relax back to the speed needed to
raise the pressure coefficient to the new surge boundary.

Figure 18. Motor current signature representing surge

Surge Detection

Surge detection control logic monitors changes in
compressor motor current. A surge occurrence leaves a
characteristic motor current signature as shown in

Figure 18 This signature is formed because the transitory

pressure breakdown between the condenser and
evaporator causes a sudden reduction in compressor
motor load. As the pressures equalize, the compressor
begins to quickly load, increasing the motor current.

AFDE-SVU02F-EN 41

UC800 AFD Operation

AFD

Chiller

UC800

Power Supply

Oil/Cooling

Pump

Interlock

To other
LLIDS

115/50/60

Power

4-wire

Machine Bus

24 Vdc Power

and Ground

115/50/60

Power

3-phase line

Circuit Breaker

line in with

115 Vac

115 Vac

HPC

24 Vdc Sense

Adaptive Frequency Drive

Motor

AFD

Chiller

Recomm

HPC

24 Vdc

Out

24 Vdc
In

UC800 Interface to Adaptive Frequency
Drive

Communications between the UC800 and the AFD are
handled via the Machine Bus

Output contacts are required to control the load of the
refrigerant/oil pump motor and the cooling circulating
pump. The contacts are Normally Open, and closed when
the AFD energizes the motor.

Note: Unlike locked rotor amps associated with

(“M-bus”) connected to the RS-485 AFD Comm Interface
module. Signals digitally sent over the M-bus include start,
stop, speed change, and drive faults.

At start of the compressor motor a signal corresponding to
the starting frequency (38 Hz) is sent to the drive.

The digital speed signal is set-up such that the AFD
operates over a 38–60 Hz frequency range.

AFD faults are sent over the M-bus to the UC800 controls
for communication on the Tracer AdaptiView display.

High Pressure Cutout – The inverter accepts a NC HPC
switch (at terminals 2X1-3 and 2X1-4. In the event of a
chiller high pressure condition, the HPC switch opens, the
drive shall shut down and de-energize the motor.

An “Up-to-Speed” signal must occur before the Maximum
Acceleration Timer times out (plus 15 seconds) or a
MANUAL RESET (MMR) alarm will occur.

The block diagram (see
communication of the starter module to Unit Mounted
Inverter Interface controls interconnecting circuits.

The Oil Pump Interlock load is 115 Vac, 3/4 hp reset.

Figure 19. UC800 to unit mounted inverter interface block diagram

electromechanical starters, the phase currents are
not expected to rise above 85 percent RLA prior to

1.6 seconds following the sending of the speed
signal, after which they then remain above
85 percent RLA until the compressor motor has
come up to speed.

Figure 19) shows the

42 AFDE-SVU02F-EN

Service Interface

AFD Operator Interface

Chiller information is tailored to operators, service
technicians, and owners. When operating a chiller, there is
specific information you need on a day-to-day basis—
setpoints, limits, alarm information, and reports.

When servicing a chiller, you need different information
and usually more of it—historic and active alarms,
configuration settings, and customizable control
algorithms, as well as operation settings.

By providing two different tools—one for daily operation
and one for periodic service—everyone has easy access to
pertinent and appropriate information.

Operations

information on the Tracer® AdaptiView™ display.

Tracer TU Service Tool (Laptop Computer)

Tracer® TU is software installed on a portable laptop
computer and used, by the service technician or advanced
operator, to interface with the UC800 controller on the
CenTraVac™ chiller. When you need more detailed
information about a Trane® chiller, connect your laptop
computer (with the Tracer® TU software installed) to the
UC800’s “Service Tool” USB plug-in port (this port is
extended to exterior of the control panel cabinet for easy
access).

manual (CTV-SVU01*-EN) for more

The Tracer® TU software provides access to that particular

Tracer AdaptiView Operator Interface

The Chiller’s Tracer AdaptiView display is the Operator
interface for the Adjustable Frequency Drive (AFD). For the
operator’s day-to-day operational information, Tracer®
AdaptiView™ displays data (English or SI units)
simultaneously on the 12-inch, color touch-sensitive
screen. Logically organized groups of information—chiller
modes of operation, active alarms, settings and reports
put information conveniently at your fingertips. The AFD
status can be viewed from the Tracer® AdaptiView™
MOTOR target area on the home page. Refer to the

Tracer

machine’s configuration settings, customizable limits,
status, and up to 60 active or historic alarms. A technician
can interact with an individual device or a group of devices
for advanced troubleshooting. For more information on
Tracer® TU, visit your local Trane Service company, or
Trane‘s website at

www.Trane.com

.

Use Tracer® TU when a factory or startup setting requires
field alterations. All adjustable AFD settings (see

Table 6 to
Table 11, p. 45) are available via Tracer TU. All others are

set to defaults predetermined for this application as based
on laboratory testing.

AdaptiView Display for CenTraVac Chillers, Daily

Table 5. The following Adaptive Frequency Drive (AFD) information is available from the Tracer AdaptiView display:

Tr ace r ® Ada p t i V i e w ™
Displa y MEN U it e m s Unit s Com m e n t s

Report s - Mot or ( AFD item s) AFD Fr eq uen cy Hz

AFD Speed RPM

AFD Transist or Temp F/ C

Set t i ngs - Mode Over r id es Oil Pum p Man ual Con t r ol Aut o/ On Oil/ refrig er an t / (AFD w at er pum p) m anu al con t r ol

Com p r essor Cont rol Sig na l Aut o/ Manua l

Note: Bot h m ot or re po r t a nd m ode overr ides cont ain ch iller content a lo ng wi t h t he AFD r elat ed i t em s id en t if ie d ab ov e.

Table 6. Tracer TU: Unit Status view:

Motor Expanding section

Mot or Windi ng Temp # 1 F/C

Mot or Windi ng Temp # 2 F/C

Mot or Windi ng Temp # 3 F/C

* See sect ion 1 0 on Cont rol Alg or it hm . [ Dr iv e h as a lim it m ode
tha t util ize s t his t e m p er at ure ]

Man ual cont rol a ll ow s t he user t o over ride t h e au tom atic si gna l
an d m a nu al ly dr iv e t h e Com p re sso r Con t r ol Si gn al f r om 0 –1 0 0 % .
The l im its an d sa fet ies r em ain act iv e . Th e co m p r essor con t rol
sig nal co nt ro ls a c alcu lat ed com b in at ion v ane s p osit io n and d riv e
spe ed fo r leav in g wa t er co nt rol sig na l.

Table 7. Tracer TU: Unit Status view:

AF Expanding section

AFD D C Bus Vol t ag e Vdc

AFD La st Diag n ostic Cod e ( d ecim al) Num ber

AFD Out put Power kW

AFD Tra nsist or Temp F/ C

Bou nda ry Pressu r e Coeffi cien t Non e

Freq u en cy Hz

Freq u en cy Com mand Hz

I GV an d AF Con t r ol

Re- op t im izat ion Tim e Rem ain in g H r s/ Min s

Speed RPM

AFDE-SVU02F-EN 43

Service Interface

Table 8. Tracer TU: Service Setpoints view: Adjustable Frequency Drive Setpoints section

De scrip t ion Min M a x Fa ct ory D efa u lt Unit s

AF Con t r ol N/ A N/ A ( Aut o, Fixed) Au t o N/ A

Re-Opt imiza t ion Sen sitiv it y 0 100 20 % Percent

Notes:

1 . Use on ly Factor y D ef au lts. Defa ul t s ot her t ha n a bo ve m ay eff ect chi ll er reli ab il it y
2 . AF Re -o p t im i za t io n Se n si t i vit y - Ever y 3 0 m in u t es the o p t im izin g algori t h m com par es t he cu rre n t v alue o f t he i nlet

gu ide vane p osit ion to the va lue tha t w as st ored a fte r t he last re- op t imi zation . I f t he d iffer ence is gre ater t han th e AF Re
op t im izat ion Sen sit ivi t y set tin g, r e- opt im iz at ion o ccu r s. Thi s value i s ad j ust ab le f rom 0 t o 1 0 0% , w her e 0 w ould
gu ar an t ee r e-o pt imi zation eve ry 3 0 m in ut es and 10 0 % wo uld g u ar an t ee n o re- op t im izat ion.

Table 9. Tracer TU: Field Startup view: Adjustable Frequency Drive section

De scrip t i o n Min Ma x Fa ct ory D ef a u l t Un it s

Max im um Freq u en cy 38 60 60 Her t z ( Hz)

Min im um Fre quency 38 6 0 38 Hert z ( Hz)

AFD Sur ge Capacit y I ncr ease 0 5 1 Her t z ( Hz)

Table 10. Tracer TU: Unit Status overrides

The re is n o sp ecif ic v iew for ov er r i de s. I f an it em is ava il ab le fo r ov er r ide , t he Over r id e i con disp lay s.

Freq u en cy Com mand AFD Freq u en cy : Wh en Man u al i s sel ect ed , t he user can en t er AFD Fr eq uen cy com ma nds

44 AFDE-SVU02F-EN

Service Interface

Table 11. Tracer TU: Configuration view: Starter Expanding section

Conf i gu r at ion of Driv e

Note: The se item s ar e fact or y set , an d ch ec ke d a t un it com mission in g . D o n ot cha nge w ith out au t hor iz at ion

De scrip t i o n Ra n g e De f a u l t Un it s N o t e s

Sur ge Prot ection 0 = d isa ble

Sur ge Sen sit iv it y 0–1 0 0 20 %

Power Lo ss Reset Tim e 0 – 2 55 6 0 Seco nds Use t h e def au lt

Uni t Lin e Vol t age 18 0 – 8,0 0 0

Uni t Mot or Volt ag e 18 0 – 15, 0 0 0

Mot o r N P FLA ( TVA) 0–2, 0 0 0

Mot o r NP RLA 1– 2 , 000

Mot o r NP Powe r 0– 4 , 000

Mot o r NP Hertz 5–2 5 0

Mot o r NP RPM 60 – 2 4,0 0 0

St at or Resistan ce 0 – 1 0,00 0 , 000

Flux Cur ren t Ref. 0 –1, 2 0 0

Accel er at io n Ti m e 1– 9 9 10 Secon ds

Decele r at i on Tim e 1– 9 9 30 Secon ds

St ar t er Cur r en t Lim i t 1–3 , 2 00 1 ( 1 . 2 XNMRA) ( a) Am p s Nam epl at e Da t a

Cur r en t Lim it Gain 0– 5 , 000 1 0

Power Loss Mode decel, coa st decel

Power Loss Tim e 0–2 5 0 Secon ds Defau lt is 0 ; i f y ou encou nt er AFD

Flyin g St art 0 = d isab le

Flyin g St art Gain 0- 3 2,76 7 2 , 000

Use Tran e Defa ult s No

RTD Typ e 75 o h m at 75 ° F

Lin e Side I t em s 0 = No t I n st alled

( a) Use onl y t he fa ct ory set t ing s for t hi s ap pl icat ion a s t hey ar e sp eci fic t o t he sal es ord er . I nst abi li t y a nd fa ult s m ay occu r b y us in g o t h er set tin g s an d i s

no t recom m ende d. Con tact yo u r l oca l Tran e Repre sen tat ive for ser v ice wh en n ecessary .

1 = e nab le

1 = e nab le

Yes

10 0 oh m at 0° C

1 = I nst alled

1

(a )

( a) Vac Nam eplat e D at a

( a) Am p s Nam epl at e Da t a

( a) Am p s Nam epl at e Da t a

( a) kW Nam epla t e Dat a

( a) Hz N am epla t e D at a

( a) RPM Nam eplat e D at a

( a) m icro- ohm s Nam ep lat e D at a

( a) Am p s Nam epl at e Da t a

0 Enab led is n ot reco m m end ed .

Yes Yes = r eq u ir ed f or m ost

75 oh m

0

Vac Nam epla t e Dat a

po w er lo ss t ry 5 sec.

appl ica t io n s.
No = a llow s “ non-Tran e”
ap plica ti on defa ult s t o be u sed for
all ot her d r ive para m eters n o t
acce ssibl e v ia t he Tracer TU
ser v ice t oo l.

AFDE-SVU02F-EN 45

Troubleshooting

Active alarms

Alarms

When an active alarm is present, it is identified in the
Active Alarms area in the upper left corner of the Tracer
AdaptiView display. This serves two purposes. First to
alert the operator that a alarm exists, and second to
provide navigation to the Alarms list.

Clicking on the active alarms causes the Alarms list to
display. All active alarms are listed first and ordered by the
alarm’s severity. The severity hierarchy is:

• Immediate shutdown (highest priority and displays
first)

• Normal shutdown

• Warning

Figure 20. AdaptiView alarms screen

• Unknown (lowest priority and displays last)

Active alarms are followed by any historical alarms. These
appear gray on the screen. The alarms button at the
bottom of the screen flashes between two colors
depending on the severity of the highest priority alarm
(i.e., Immediate shutdown alarms cause the button to flash
between red and black, and Normal shutdown alarms
cause the button to flash between yellow and black).

Clicking directly on any of the active alarms links to a
screen that explains the alarm and provides possible
solutions.

You can also connect the laptop computer loaded with the
Tracer TU service tool software directly to the UC800
controller to view the AFD last diagnostic code.

46 AFDE-SVU02F-EN

Troubleshooting

X39003893001A

Troubleshooting

This section can assist in field troubleshooting LiquiFlo 2.0
drives, and can provide information, which others can use
to help you troubleshoot the drive.

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

1. Collect alarm and parameter information.

a. DO NOT cycle unit power or reset the controls.

Leave AFD and UC800 in their present states.

b. Record the “AFD Last Diagnostic Code” using

Tracer TU. This value is available under the Unit
Status tab, in the Motor expanding box.

c. Record all UC800 active and historic alarms. Make

a full chiller service report.

d. Document and check all applicable parameter

settings. This information can be verified from the
chiller nameplate, and by referring to this manual.

e. In the Binding view of the Tracer® TU service tool,

verify there is a green circle indicating that the AFD
Recomm Starter LLID is bound.

f. If an OIM is available, record any drive diagnostics

found.

2. Collect Chiller Information.

a. Note the following chiller information:

• Operating mode and any sub-mode (i.e.,
100 percent or 75 percent load etc.)

• Number of chiller starts, and hours of operation.

• Time since last diagnostic shutdown (<1 minute,

<1 hour, >1 hour, etc.)

b. What was the chiller state at the time of the failure?

(Chiller starting? Running low load? Running full
load? etc.)

c. Record the chiller’s sales order and serial numbers,

& the drive’s serial and model numbers.

3. Troubleshooting

a. Measure and record the DC bus (via the Operator

Interface Module [OIM]).

b. Check ALL wiring (tightness, ribbon cables fully

seated, proper phasing, etc.)

c. Refer to the Rockwell manuals for further

troubleshooting information (manual D2-3496-1).

d. If possible, Use the Rockwell OIM and provide the

following drive parameter information:

• LiquiFlo 2.0 (inverter) Parameters 49, 50, 209,
210, 224, 225, 226, 227, 228, 229, 230, 243, 244,
245, 246, 247, 248, 249, 250, 251, 252, 262, 263,
264, 265, 266, 267, 268, and 269.

4. Drive Over Temperature

a. Measure refrigerant pump discharge pressure and

compare to the condenser pressure. It should be 10­15 psid.

b. Measure drive coolant line delta-T.

c. Record parameters 120, 121, and 122 from the

active rectifier.

d. Operate the condenser at or below design

temperature. Elevated tower water temperatures
will raise drive temperatures.

e. The ambient temperature must remain below

specification (refer to
fan grills are clean and operational.

f. Do not place manuals or prints below the power

module as this can block air flow.

Table 1, p. 13). Make sure the

AFDE-SVU02F-EN 47

Alarm Messages and Fault Codes

The “AFD Last Diagnostic Code” value is available using
Tracer TU. This value is located under the Unit Status tab,
in the Motor expanding box.

Table 12. Alarm messages and fault codes

Tr a cer Ad a p t i V ie w A larm

Gener al 2 Aux iliar y I npu t I/ O Bo ar d Fail 1 2 1 I / O Com m Loss
Power Loss 3 Powe r Loss I / O Board Fail 12 2 I / O Boa r d Fail ( 3)
Power Loss 4 Unde r Volt age I /O Bo ar d Fail 1 2 3 I nvt r Unk I O Brd ( 2 )
Hig h Bus 5 Over Volt age D r iv e Ov ercurr ent 1 9 7 - 1 99 Invt r D sat U- , V- . W- ( 2)
Mot o r Overload 7 Mot or Ov er load Dr ive Ove r cu rren t 2 0 0 - 2 02 Invt r D sat U, V, W ( 3 )
Dr iv e Ove rt em p 8 I nvtr Ba se Tem p Dr iv e Ove rcurrent 2 0 0- 2 02 Invt r D sat U+ , V+ , W+ ( 2)
Dr iv e Ove rt em p 9 I nvtr I GBT Temp Driv e Ov er curr ent 2 0 3 - 2 05 Invt r Ove r Cu r U, V, W
Dr iv e Ov er curr ent 12 HW Ov erCur r en t Pow er Boar d Fail 206 I nvt r HW Unuse d ( 3)
Gro und Fault 13 Grou nd Faul t Esto p 20 7 I n v t r Gat e Kill
Gener al 24 Decel I n hib it Dri ve Ov er cu r r en t 20 8 - 2 10 Rctfr Dsat R, S, T ( 3)
Gener al 25 Over Sp eed Li m i t Dri ve Ov er cu r r en t 20 8 - 2 10 Rct fr Dsat R+ . S+ . T+ ( 2 )
Gener al 29 Anal og in Loss Dr ive Ov er cur r ent 21 1 - 2 1 3 Rct fr Ov er Cu r R, S, T
Power Board Fail 30 NTC Dem ux Fail ( 2) Dr ive Over cu r r en t 21 4 React or Tem p
Gener al 31 In v Temp Sw it ch ( 2) Power Bo ar d Fail 21 5 Rctfr HW Unu se d ( 3)
Gener al 33 Aut o Rst r t Trie s Gro und Fault 216 Rct fr Gn d Fault
Phase Lo ss 35 Cur r en t Fbk Lost Dr ive Over t em p 21 7 Rctfr Base Temp
Dr iv e Ov ercur rent 36 SW Ov erCur r en t D riv e Ov er t emp 21 8 Rct fr I GBT Temp
Phase Lo ss 37 Mot o r I I m bala nce Dri ve Over cu r ren t 2 1 9 Rctfr I T Overl d
Mot or Sho rt 3 8 Phase U t o Gr n d Dr ive Ove rcurre nt 2 2 0 Rctf r 12T Ov erld
Mot or Sho r t 3 9 Phase V t o Gr n d Pow er Loss 221 Ride Th r u Abort
Mot or Sho r t 4 0 Pha se W t o Gr nd High Bus 2 2 2 Hig h AC Lin e
Mot or Sho rt 4 1 Phase UV Sh or t Pow er Loss 2 2 3 Low DC Bus
Mot or Sho r t 4 2 Pha se VW Sho r t Hi gh Bu s 22 4 Rct fr Ov er Vol t
Mot or Sho r t 4 3 Pha se WU Sh o rt Power Lo ss 2 2 5 I n put I I m balance
Gener al 48 Param s De fa ult ed Powe r Lo ss 22 6 I npu t V I m bala nce
Dr ive Over cu r r en t 6 3 Shear Pin Powe r Loss 22 7 AC Lin e Lost
Dr iv e Ov ercu r ren t 6 4 Driv e Ov er l oa d Gener al 22 8 Lin e Feq Lo st
Power Struct ure Fail 7 0 HW Fault Control Boar d NVS 229 Rctf r Check su m
I gno r e 7 1 - 7 5 Port 1 - 5 Ad apt er Pow er St ruct ure Fail 230 I nvt r HW Un k
Gener al 77 Volts Rang e Pow er St r u ct u r e Fail 2 3 1 Rctfr HW Unk
Gener al 78 Flu xAm p s Rang Gen er al 23 2 Rct f r Not OK
Gener al 79 Exce ssive Load Gener al 23 3 Precha r ge Close d
Gener al 80 Aut oTun e Ab or t ed Gene ra l 23 4 Prech arg e Op en ed

Gener al 81- 85 Port 1- 5 DPI Lo ss

Gener al 87 I Xo Volt age Range I / O Boar d Fail 23 6 Rct fr I O Boa r d
Cont r ol Boar d N VS 1 00 Param eter Chk sum Gen er a l 237 Not at Volt ag e
Cont rol Board NVS 1 0 1 Unser Set1 Ch ksum DPI Com m unicat ion 2 3 8 Rctf r Not Log in
Cont rol Board NVS 1 0 2 User Se t 2 Ch k su m Gen er al 23 9 Power Phase d ACB
Cont rol Board NVS 1 0 3 User Se t 3 Ch k su m Estop 240 Rct f r Gat e Kill ( 2 )
Power Board Fail 10 4 Pwr Brd Chksum 1 D riv e Ov ercur r ent 24 1 - 2 4 3 Rctfr D sat R- , S- , T- ( 2 )
Power Board Fail 10 5 Pwr Brd Chk sum 2 Pow er Boar d Fail 244 Rct f r NTC Dem ux ( 2)
Power Unit HW+ Control Bo ar d

NVS
Cont r ol Boa r d NVS 10 7 Replaced MCB- PB DPI Com mu nica t io n 2 4 6 Rct fr D PI Com m (2)
Gener al 120 I /O Mi sm atch ( 3 ) Gener al 247 Car r Sy n c Lost

Note: ( 1 ) = Faul t N um ber s n ot list ed a r e r ese rve d for f u t ure use. ( 2) = Fault ava il ab le on Fr am e 4 driv e on ly ( 3) = Fault ava il able on Fram e 3 dr ives o nly

TU La st
Dia g Co de D r iv e Fault

10 6 I n com p at MCB-PB I / O Boa r d Fail 24 5 Rct fr Un k I O Br d ( 2)

Tr a cer Ad a pt iV iew
Ala r m

Powe r B oar d Fail + Cont ro l
Board NVS

TU La st
Dia g Code Driv e Fa ult

23 5 Rct fr Pwr Bo ar d

For additional information regarding descriptions and
corrective actions, refer to the Rockwell Instruction Manual
D2-3496-1.

48 AFDE-SVU02F-EN

AFDE Startup Procedure

X39003893001A

NOTICE

Perform Visual Inspection!

Before powering up this drive for the first time conduct
a visual inspection for the following:

• Shipping damage.

• Signs of moisture.

• Signs of debris or dust from storage.

• Signs of corrosion on components and/or enclosure.

These conditions could cause equipment damage. Do
not power up equipment if you have concerns
regarding equipment condition. Upon initial power up,
remain in the area for the first two hours of operation
and observe the chiller and drive for any abnormalities.
Contact CenTraVac™ Chiller Technical Support for
assistance if needed.

WARNING

Hazardous Voltage!

Failure to follow the instructions below could result in
death or serious injury. Be sure all enclosure doors are
closed and properly secured with fasteners when
operating equipment.

The UC800 starts, stops, and monitors all unit and
AFDE run functions.

Complete all items on the commissioning checklist and
in the startup procedures for the chiller as defined in
the chiller
manual, or other applicable manual.

Installation, Operation, and Maintenance

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged.

Failure to follow the instructions below could result in
death or serious injury. DC bus capacitors retain
hazardous voltages after input power has been
disconnected. Follow proper lockout/tagout procedures
to ensure the power cannot be inadvertently energized.
after disconnecting input power, wait ten (10) minutes
for the DC capacitors to discharge and then check the
voltage with a voltmeter to ensure the DC bus
capacitors are discharged before touching any internal
components.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN

2. Check the following on the drive:

a. 380–480 volt input wiring to the drive is sized

correctly and connected as noted in this manual.

b. Check the drive ground connection as detailed in

“Input Power and Control Wiring,” p. 31, check

cabinet wire routing and grounding.

For CVHH and CDHH chillers, verify the overload

c.

setting on the oil pump motor starter assembly

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

The refrigerant-cooled adaptive frequency drive is unit­mounted on CenTraVac™ chillers. It is installed and
programmed completely in the factory. Follow the
procedure below when starting the water chiller and drive.

1. The UC800 is the primary controller for the
CenTraVac™ chiller and is located in the control panel.

AFDE-SVU02F-EN 49

(refer to

Figure 5, p. 21 for location of the oil pump motor

starter assembly).

Table 13 for settings; see item 26 in

AFDE Startup Procedure

Table 13. Oil pump motor starter assembly overload

setting

Lin e V olt a ge
( V)

38 0 60 3. 1

44 0

48 0

38 0

41 5

( a) Va lue is equ al t o m o tor FLA an d a ssum e s r ela y has bu ilt - in 1 25 % f act or .

Lin e Fr e q u e n cy
( Hz )

60 2. 746 0

50 2. 640 0

Ov e r loa d Re lay Se tt i n g

( a)

( A)

3. Check all drive wiring and connections in the drive to
make sure they are tight and free of any shipping
damage.

4. AFDE control checkout: Use the Tracer® TU service
tool.

a. Confirm the drive LLID has been properly bound

and is recognized by the unit controls.

b. CHILLER Setpoints: As with any new chiller, first

check out all UC800 setpoints for the Chiller.

c. AFD Setpoints: Check out all AFD setpoints.

d. AFD Configuration: Verify the correctness of the

“Sales Order” specific setpoints in the “Starter
Configurations for AFD Starters.” These settings are
specific to unit/motor combination in the drive. All
of the remaining settings are factory-determined
default setpoints that are the same on all AFDE
refrigerant-cooled drives.

Note: If the set values do not match, contact the

local Trane Service agency first, or, the
La Crosse Business Unit Technical Service
Department. The correct values are listed
on the unit nameplate shipped with each
unit.

5. In order to view the AFDE configurable settings, go to
the Chiller Configuration tab in the Tracer® TU service
tool and select the AFD expanding section.

6. If the drive LLID is not found or if it is necessary to re­bind the drive LLID, follow the procedure below.

a. The drive’s main DC bus must be charged in order

for the drive LLID to be recognized or bound. Close
the drive disconnect and apply line power to the
drive.

b. With a laptop connected to the chiller and with

Tracer® TU running, enter the binding view menu
of Tracer® TU and locate the “AFD Starter” LLID in
the menu. Select the “Bind” button for the AFD
Starter LLID.

c. The screen “Is the device alone selected?” displays.

In the AFD, depress the “service” button on the

LLID, or from outside the AFD panel use the OIM to
set RECOMM parameter 21 “Bind Ctrl” from 0 to 1.

d. You do not use a magnet to bind the AFD Starter

LLID.

e. On the Tracer® TU screen, select the “yes” button

to indicate the LLID has been selected.

f. When properly bound, exit the binding view.

g. Perform any remaining startup items.

7. When ready, start the drive from the Tracer®
AdaptiView™ display.

8. Check the AFDE chiller drive response to the UC800.
Initially, the drive will go to 38 hertz and stay there until
the CenTraVac™ chiller vanes open based on load. The
drive will change the speed from there based on load
demand.

9. Document all information on the Startup log.

50 AFDE-SVU02F-EN

Startup Test Log

Water-Cooled CenTraVac Chiller with Tracer AdaptiView Control and
Adjustable Frequency Drive (AFD) Starter

Job Nam e AFD Ser i al Num b er
Job Locat ion AFD Mod el Nu m b er
Sales Or der N um b er Ship D at e
Chiller Ser ial Num ber St ar t Dat e
Chiller Mod el Num b er

St ar t er Dat e: Tracer TU: Ser v ice Set poin t s Vi ew : AFD Defa ul t Set t in g
Man ufa ct u r e AFD Con t r o l Aut o
Ty p e Re-Opt imiza t ion Sen sit iv it y 2 0%
Ven d e r I D
Mod el Num ber
Volt s & Hz
Am p s Rest ar t I nhibi t St op t o St art Tim e 30
Mot o r D at a: Sur g e Pro t ect ion en ab le
Man ufa ct u r er Sur ge Sen si t iv ity 2 0
Type & Fram e Power Loss Reset Tim e 60
Draw ing # Unit Lin e Volt age *
Ser ial Num ber Mot o r NP FLA ( TVA) *
Nam epla t e D at a: Mot o r NP RLA *
RLA Mot o r NP Powe r *
KW Mot o r NP Her tz *
Volt s & Hz Mot or NP PRM *
Prest art Check s Dat e Ch ecke d St a t or Resist ance *
Dr iv e Gr oun d ed Flux Curr ent Ref. *
Mot o r Rot ati on Accel er ation Tim e 30
Dr iv e Ch assis Gr ou n ded Deceler at ion Tim e 30
Control W ir ing Tig h t St ar t er Cur r en t Lim it *
Dr iv e Con n ect ions a r e Tig h t Cur r en t Lim it Gain 10
Verif ied Set t in g s Pow er Loss M ode D ecel

Com m ent s: Flyi n g St art Disab le

UC80 0 St ar ter Type : Uni t Mou n t AFD
Tracer TU: Confi gur ation Vi ew : St ar ter

Pow er Loss Tim e 0

Flyi n g St art Gai n 2000

Use Tran e Defau lt s ( for al l ot her AFD
para m et er s n ot accessible via Tracer TU)

RTD Ty p e 75
* Must be set per sa le s or d er va r ia bl e.
Te s t Lo g D at e : Log 1 Lo g 2
Tracer TU Unit St a t us View: AF
AFD Out put Power ( KW)
Spe ed
Freq u en cy
AFD Transist or t em p
Tracer TU Field St a rt up View : AFD
Max im um Fre qu e ncy 60
Min im um Freque ncy 38
AFD Surge Capaci t y I n cr ea se 1
Tracer TU St at us View: Mot or
Avera ge Line Cur r en t
St ar t er Ave rag e Phase Volt age
St ar t er Load Power Factor
Mot o r W in d in g # 1 t em p
Mot o r W in d in g # 2 t em p
Mot o r W in d in g # 3 t em p

Tr a n e
Def aul t

Yes

Set t ing

AFDE-SVU02F-EN 51

Recommended Periodic Maintenance and Inspection

X39003893001A

Visual Inspection—Power
Removed

WARNING

Hazardous Voltage w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged.

For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

5. Ensure the drive interior and exterior is clear of any
dust or debris. Fans, circuit boards, vents etc. must be
clean. Only use a vacuum for cleaning. DO NOT use
compressed air. If aftermarket intake filter kits
(KIT19035=frame 3, KIT19036=frame 4) have been
installed, remove the washable filter media, clean and
dry the filter media and re-install.

6. Inspect the interior of the drive for any signs of
moisture entry or leakage.

7. Visually inspect all drive components and wiring. Look
for signs of heat or failure (look for swelled or leaking
capacitors, discolored reactors or inductors, broken
pre-charge resistors, smoke or arc trails on MOVs and
capacitors, etc.).

8. Closely inspect the motor terminal board for any signs
of leakage, arcing, etc.

9. Check ALL cable/lug/terminal connections inside the
drive enclosure. Ensure all are clean and tight, and not
rubbing against each other anywhere.

10. Check any bypass or pre-charge contactors. Confirm
the contacts are in serviceable condition and that the
contactor operates smoothly.

11. Re-seat all ribbon cable or control wire plugs to ensure
all are snug and tight.

12. Verify 2A6 filter cap assembly fuses 2F6, 2F5, and 2F4
are OK.

13. Check the precharge resistors.

WARNING

Live Electrical Components!

Failure to follow all electrical safety precautions when
exposed to live electrical components could result in
death or serious injury. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been properly

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power sources and

allow at least 10 minutes for capacitors to discharge.

• All electrical enclosures-unit or remote-are IP2X.

1. Check the refrigerant coolant lines and 2-bolt flange
drive connections to ensure they are tight and do not
leak.

2. Ensure the door interlocks are present and working.

3. Verify the safety ground connections to the door
panels are securely connected.

4. Inspect power wire cables and devices to assure no
abrasion is occurring from vibrations against chassis
of cabinets, or other edges.

52 AFDE-SVU02F-EN

trained in handling live electrical components perform
these tasks.

Recommended Periodic Maintenance and Inspection

Operational Inspection—Power
Applied

1. Verify the drive cabinet cooling fans are operating.

This should be done from outside the enclosure, by
looking into the cabinet at door and cabinet vents, to
avoid electrical hazards.

Note: The power module fan comes on with power.

Other fans cycle with drive operation.

2. Check historic fault codes using OIM connected to the
AFD.

3. Check configuration settings and confirm all proper
settings are still present in the controls.

4. Review the diagnostic history.

5. Make Chiller Service report to document all setpoints.

6. Check the UC800 alarm histories for any indications of
operational problems.

Do this every 1–12 months depending on
operating environment

To properly diagnose service issues for Adaptive
Frequency drives for centrifugal chillers equipped with
LF 2.0 (AFDE) starters, and Operator Interface Module
(OIM) and special cable are required. All UC800 chillers
will be equipped with the OIM as standard on the drive
power module. This is for service only and NEVER for
machine operation. These items are available from Trane
with the following part numbers:

OIM (Operator Interface Module): MOD01352

Cable for OIM: CAB01034

Do as needed

Replace the magnetic choke if there is physical damage
(for example, cracks).

Chiller Operator Display Content

Refer to

Water-Cooled CenTraVac Chillers

most recent version) for Tracer® AdaptiView™ display
information.

Important: Please note that the Tracer® AdaptiView™

AFDE-SVU02F-EN 53

Operations Guide: Tracer AdaptiView Display for

(CTV-SVU01*-EN, or the

displayed voltage is line side input
voltage, whereas current and power factor

are load side data. Therefore, these are
not used together to calculate kW; Tracer
AdaptiView kW is communicated from the
drive to the chiller panel, and represents
input power to the drive.

Wiring Schematics

For reference, an as-built schematic wiring diagram and a
field wiring connection diagram are located inside the
main control panel door of the chiller.

Figure 21. Field connection diagram: CVHE, CVHF, CVHG —Trane-supplied Adaptive Frequency Drive (1 of 2)

54 AFDE-SVU02F-EN

Wiring Schematics

Figure 22. Field connection diagram: CVHE, CVHF, CVHG—Trane-supplied Adaptive Frequency Drive (2 of 2)

AFDE-SVU02F-EN 55

5P5

5P4

5P3

5P2

1K19 J2-3

1K19 J2-1

CHILLER NON-LATCHING

ALARM INDICATOR

(DEFAULT)

1K15 J2-12

1K15 J2-10

ICE BUILDING

INDICATOR

1K19 J2-6

1K19 J2-4

CHILLER LIMIT

MODE INDICATOR

(DEFAULT)

1K21 J2-6

1K21 J2-4

FREE COOLING

INDICATOR

1X1-G

G/Y

NHDNG

CUSTOMER PROVIDED

110VAC 50HZ

OR

120VAC 60HZ

15A

OPTIONAL 5P 14 CHILLE R ALARM INDICATOR

ANY 1K19 OR 1K20 DEFAULT OUTPUT MAY BE REPROGRAMMED

TO THE ALTERNATE STATUSOUTPUT SHOWN BELOW

OPTIONAL

OUTDOOR AIR

TEMPERATURE

SENSOR

4BT15

SHIPPED WITH THE UNIT FOR FIELD

INSTALLATION TO THE W B3 COMMUNICATION

LINK CABLE IN THE MAIN UNIT CONTROL PANEL.

REFER TO THE UNITINSTALLATION LITERATURE

FOR INSTALLA TION OPTIONS AT THE JOB SITE.

6Q1

531

CONTROL POWER

DISCONNECT SWITCH

CPTR

PANEL

GND

TRANE SUPPLIED

UNIT MOUNTED CPTR

GND L1 L2 L3

CUSTOMER PROVIDED

INCOMING LINE VOLTAGE

(SEE UNIT NAMEPLATE)

MAIN UNIT CONTROLPANEL

DRIVE

PANEL

GND LUG

DIIS

DRIVE INPUT

ISOLATION

SWITCH

CUSTOMER PROVIDED

INCOMING LINE VOLTAGE

(SEE UNIT NAMEPLATE)

L1 L2 L3 GND

L1 L2 L3

T1 T2 T3

1T2T3T

4M1 MOTOR

TERMINAL CONNECTIONS

OVER 600V

RECTIFIER DC LINK

AND INVERTER

UVW

DRIVE

PANEL

GND LUG

MFN1MP

MAIN COOLING FAN

MOTOR PROTECTOR

FRAME B

DRIVE ONLY

CUSTOMER PROVIDED

380-400-415VAC 50HZ OR

380-440-460-480-575-600VAC 60HZ

8kVA MINIMUM W ITH

BRANCH CIRCUIT PROTECTION

(FRAME B DRIVE ONLY)

L1 L2 L3 GND

1-L1 3-L2 5-L3

TRANE SUPPLIED REMOTE MOUNTED

ROCKWELL MEDIUM VOLTAGE

ADAPTIVE FREQUENCY DRIVE SHOWN

SEE DETAIL A FOR TRANE SUPPLIED UNITMOUNTED

LOW VOLTAGE ADAPTIVE FREQUENCYDRIVE

1 +24V

2GND

3COM+

4COM-

2K36

AFD

COMMUNICATION

CARD

RED

BLK

BLU

GRY

WB4

RED

BLK

BLU

GRY

SHIELD

1T2 J5-1

1T2 J5-2

1T2 J5-3

1T2 J5-4

1X1-G

WB4 SHIELDING TO BE

GROUNDED AT MAIN

CONTROL PANEL ONLY

DTB1

D-501A

AUX

PRE-TRIP

DTB1

D-501C

CUSTOMER PROVIDED

DRIVE INPUT CIRCUIT BREAKER

OR

FUSED LOAD BREAK SWITCH

DTB1

401

DTB1

600A

MUST BE JUMPERED

IF NOT US ED

OPTIONAL

REMOTE STOP

1X1-G DRIVE

PANEL

GND LUG

G/Y

9E

DTB1

1100A

4H

6F

53F

1X1-3

1X1-4

1X1-10

1X1-21

DTB1

1100B

DTB19ADTB1

10A

A CUSTOMER PROVIDED DRIVE INPUT CIRCUIT BREAKER

REQUIRES AN INTERLOCK CIRCUIT CONSISTING OF PRE-TRIP

AND AUX CONTACTS AS SHOWN. A CUSTOMERPROVIDED

DRIVE INPUT FUSED LOADBREAK SWITCH REQUIRES AN

INTERLOCK CIRCUIT CONSISTING OF A PRE-TRIP CONTACT

ONLY. THE DRIV E REQUIRES A 2-CYCLE MINIMUM W ARNING

THAT THE CIRCUIT BREAKER OR FUSED LOAD BREAK SWITCH

WILL OPEN TOPROVIDE A SAFE SHUTDOWN OF THE DRIVE.

REFER TO THE DRIVE INSTALLATION MANUAL FOR REQUIREMENTS.

OPTIONAL

O

PTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

COMPRESSOR

MOTOR HOUSING GND

USED WITH REMOTE MOUNTED

MEDIUM VOLTAGE DRIV E ONLY

DRIVE

PANEL

GND LUG

2Q1 LINE POTENTIAL

MAIN CIRCUIT BREAKER

OR

2X15 LINE POTENTIAL

TERMINAL BLOCK

CUSTOMER PROVIDED

INCOMING LINE VOLTAGE

(SEE UNIT NAMEPLATE)

L1 L2 L3 GND

L1 L2 L3

TRANE SUPPLIED UNIT MOUNTED

ROCKWELL LOW VOLTAGE

LIQUI-FLO II FRAME 4

ADAPTIVE FREQUENCY DRIVE

DETAIL A

DETAIL A

Wiring Schematics

Figure 23. Field connection diagram: CVHH — Trane-supplied Adaptive Frequency Drive (1 of 2)

56 AFDE-SVU02F-EN

Figure 24. Field connection diagram: CVHH— Trane-supplied Adaptive Frequency Drive (2 of 2)

AVISO

¡UTILICE ÚNICAMENTE

CONDUCTORES DE COBRE!

LASTERMINALESDELAUNIDADNO

ESTÁN DISEÑADAS PARA ACEPTAR

OTROS TIPOS DE CONDUCTORES.

NO REALIZAR LO ANTEDICHO PUEDE

PROVOCAR D AÑOS EN EL EQUIPO.

AVIS

N'UTILISER QUE DES CONDUCTEURS

EN CUIVRE!

LESBORNESDEL'UNITÉNESONT

PAS CONÇUES POUR RECEVOIR

D'AUTRES TYPES DE CONDUCTEURS.

UN MANQUEMENT À LA PROCÉDURE

CI-DESSUS PEUT ENTRAÎNER

DES DOMMAGES À L'ÉQUIPEMENT.

NO TICE

USE COPPER CONDUCTORSONLY!

UNIT TERMINALS ARE NOT

DESIGNED TO ACCEPT OTHER

TYPES OF CONDUCTORS.

FAILURE TO DO THE ABOVE COULD

RESULT IN EQUIPMENT DAMAGE.

!

W A RNIN G

HAZARDOUS V OLTAGE!

DISCONNECT ALL ELECTRIC POWER INCLUDING

REMOTE DISCONNECTS AND FOLLOW LOCK OUT

AND TAG PROCEDURES BEFORESERVICING.

INSURE THAT ALL MOTORCAPACITORS HAVE

DISCHARGED STORED VOLTAGE. UNITS WITH

VARIABLE SPEED DRIVE, REFER TO DRIVE

INSTRUCTIONS FOR CAPACITOR DISCHARGE.

FAILURE TO DOTHE ABOVE COULD RESULT

IN DEATH OR SERIOUSINJURY.

!

AVERTISSEMENT

TENSION DANGEREUSE!

COUPER TOUTES LES TENSIONSET OUVRIR

LES SECTIONNEURS À DISTANCE,PUIS SUIVRE

LES PROCÉDURES DE VERROUILLAGE ET DES

ÉTIQUETTES AVANT TOUTE INTERVENTION.

VÉRIFIER QUE TOUS LES CONDENSATEURS

DES MOTEURS SONT DÉCHARGÉS. DANSLE CAS

D'UNITÉS COMPORTANT DES ENTRAÎNEMENTS

À VITESSE VARIABLE,SE REPORTER AUX

INSTRUCTIONSDEL'ENTRAÎNEMENTPOUR

DÉCHARGER LES CONDENSATEURS.

UN MANQUEMENT À LA PROCÉDURE

CI-DESSUS PEUT ENTRAÎNER DES

BLESSURES GRAVES, VOIRE LA MORT.

!

ADVERTENCIA

iVOLTAJE PELIGROSO!

DESCONECTE TODA LA ENERGÍAELÉCTRICA,

INCLUSO LAS DESCONEXIONES REMOTAS YSIGA

LOSPROCEDIMIENTOSDECIERREYETIQUETADO

ANTES DE PROCEDER AL SERVICIO. ASEGÚRESE

DE QUE TODOS LOS CAPACITORES DEL MOTOR

HAYAN DESCARGADO EL VOLTAJEALMACENADO.

PARA LAS UNIDADESCON TRANSMISIÓN

DE VELOCIDAD VARIABLE, CONSULTELAS

INSTRUCCIONES PARA LA DESCARGA

DEL CONDE NSADOR.

NO REALIZAR LO ANTEDICHOPUEDE PROVOCAR

LA MUERTE O LESIONESGRAVES.

DEVICE PREFIX CODE

1 = MAINUNIT CONTROLPANEL DEVICE

2 = STARTEROR DRIVE PANEL DEVICE

4 = UNIT MOUNTED DEVICE

5 = CUSTOMERPROVIDED DEVICE

6 = CONTROLPOWER PANEL DEVICE

1K16 J2-2

1K10 J2-2

1K9 J2-2

1K9 J2-1

1K8 J2-4

1K8 J2-3

1K8 J2-2

1K8 J2-1

1K10 J2-1

5S8

5S15

5S14

5S13

EXTERNAL FREE COOLING SWITCH

EXTERNAL ICE BUILDING COMMAND

EXTERNAL BASE LOADING E/D

EXTERNAL HOT WATER CONTROL E/D

1K7 J2-2

1K7 J2-3

1K7 J2-5

1K7 J2-6

2-10VDC OR 4-20mA

EXTERNAL BASE LOADING SETPOINT

2-10VDC OR 4-20mA

GENERIC REFRIGERANT MONITORINP UT

1K6 J2-2

1K6 J2-3

1K6 J2-5

1K6 J2-6

2-10VDC OR 4-20mA

EXTERNAL CURRENT LIMIT SETPOINT

2-10VDC OR 4-20mA

EXTERNAL CHILLED WATER SETPOINT

1K5 J2-2

1K5 J2-3

1K5 J2-5

1K5 J2-6

2-10VDC

% RLA COMPRESSOR OUTPUT

(GENERIC BAS)

2-10VDC

CONDENSER REFRIGERANT PRESSURE

OR

EVAPORATOR/CONDENSERDIFFERENTIAL PRESSURE OUTPUT

OR

CONDENSER HEAD PRESSURE CONTROL

1K1 LINK +

1K1 LINK -

OPTIONAL

MODBUS OR BACNET COMMUNICATION

TRACER OR LONTALK COMMUNICATION

1K3/1K4J2-1

1K3/1K4J2-2

1K2 J2-4

1K2 J2-3

1K2 J2-2

1K2 J2-1

5S6

5S7

EXTERNAL AUTO-STOP

(REMOVE JUMPER 1W3 IF USED)

EMERGENCY STOP

(REMOVE JUMPER 1W4 IF USED)

1W3

1W4

CUSTOMER TO CONNECT

ETHERNET AND POWER CABLES

TO 4A1 ADAPTIVIEW DISPLAY MONITOR

1K1

ETHERNET

1T3-J4

POWER

FACTORY CONNECTE D

IN CONTROL PANEL

EN1

WB16

1X1-6

1K16 J3-2

1X1-5

1K27-21

1K27-20

1K27-19

1K26-21

1K26-20

1K26-19

1X1-5

1K26-4

1K26-17

1K26-18

1K15 J2-6

1K15 J2-4

1K15 J2-3

1K15 J2-1

5K42

5K43

REQUIRED

REQUIRED

EVAPORATOR WATER

PUMP CONTROL

CONDENSER WATER

PUMP CONTROL

1K27-18

1K27-17

1K27-4

1X1-6

WHT

BLU

BRN

BLK

GRY

WHT

BLU

BRN

BLK

GRY

WB11

CABLE

23145

4B4

OPTIONAL TRANE PROVIDED

PRIMARY EVAPORATOR WATER

FLOW DETECTION SENSOR

WHT

BLU

BRN

BLK

GRY

WHT

BLU

BRN

BLK

GRY

WB12

CABLE

23145

4B5

OPTIONAL TRANE PROVIDED

PRIMARY CONDENSER WATER

FLOW DETECTION SENSOR

5S17

5S18

SECONDARY

OPTIONAL

SECONDARY

OPTIONAL

CUSTOMER SUPPLIED

SECONDARY EVAPORATOR

WATER PROOF OF FLOW DE VICE

CUSTOMER SUPPLIED

SECONDARY CONDENSER

WATER P ROOF OF FLOW DEVICE

2

2

5S11

5S12

5S17

5S18

PRIMARY

REQUIRED

PRIMARY

REQUIRED

SECONDARY

OPTIONAL

SECONDARY

OPTIONAL

CUSTOMER SUPPLIED

EVAPORATOR WATER

PROOFOFFLOWDEVICES

CUSTOMER SUPPLIED

CONDENSER WATER

PROOFOFFLOWDEVICES

5P10

5P9

5P8

5P7

5P6

1K20 J2-9

1K20 J2-7

PURGE

ALARM INDICATOR

(DEFAULT)

1K20 J2-3

1K20 J2-1

CHILLER MAXIMUM

CAPACITY INDICATOR

(DEFAULT)

1K19 J2-9

1K19 J2-7

CHILLER LATCHING

ALARM INDICATOR

(DEFAULT)

1K19 J2-12

1K19 J2-10

CHILLER

RUNNING INDICATOR

(DEFAULT)

1K20 J2-6

1K20 J2-4

CHILLER HEAD RELIEF

REQUEST INDICATOR

(DEFAULT)

MAIN UNIT CONTROLPANE L

5V

60A OR 61A

5U

62A OR 63A

60A

62A

5W

58A

5T

59A

64A

65A

2AS

2AT

PROVIDED

BY TRANE

PROVIDED

BY TRANE

1

1

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

61A

63A

2

2

1

1

3

3

DO NOT ROUTELOW VOLTAGE (30VDC) WITH CONTROL VOLTAGE (120VAC).

DASHED LINES INDICATE CUSTOMERWIRING.

WIRE NUMBERS SHOWN ARE RECOMMENDED BY TRANE.

DO NOT POWER UNIT UNTIL CHECK-OUT AND START-UPPROCEDURES HAVE BEEN COMPLETED.

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

OPTIONAL

4

4

ABW

REF

131A

131C

132A

132C

200

201

202

260

314

320

321

330

331

340

350

360

362

375

376

377

378

379D

380

CLASS 2

WIRING

Wiring Schematics

AFDE-SVU02F-EN 57

Trane - by Trane Technologies (NYSE: TT), a global climate innovator - creates comfortable, energy
efficient indoor environments for commercial and residential applications. For more information,
please visit trane.com or tranetechnologies.com.

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without
notice. We are committed to using environmentally conscious print practices.

AFDE-SVNU02F-EN 20 Jun 2020

Supersedes AFDE-SVU02E-EN (Mar 2016)

©2020 Trane