Phase LHX Series User manual

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SAFETY MESSAGES AND WARNINGS
To ensure safe and reliable operation of Phase Technologies variable frequency drives, it is important
to carefully read and understand this manual and to read and observe all warning labels attached to
the drive before installing the equipment. Please follow all instructions exactly and always keep this
manual with the equipment for quick and easy reference.
Definitions of Warning Signs and Symbols
CAUTION: Indicates a potentially hazardous situation that could result in injury or damage to the
product.
WARNING: Indicates a potentially hazardous situation that could result in serious injury or death.
HIGH VOLTAGE: Indicates high voltage. The voltage associated with the procedures or operations
referenced could result in serious injury or death. Use caution and follow instructions carefully.
READ THESE WARNINGS BEFORE INSTALLING OR
OPERATING EQUIPMENT!
WARNING: Risk of electric shock. De-energize the unit by disconnecting all incoming sources of
power, then wait for the time specified on the drive warning label, before servicing the equipment.
HIGH VOLTAGE: This equipment is connected to line voltages that can create a potentially
hazardous situation. Electric shock could result in serious injury or death. This device should be
installed only by trained, licensed, and qualified personnel. Follow instructions carefully and observe
all warnings.
WARNING: This equipment should be installed and serviced by qualified personnel familiar with the
type of equipment and experienced in working with dangerous voltages.
WARNING: Installation of this equipment must comply with the National Electrical Code (NEC) and
all applicable local codes. Failure to observe and comply with these codes could result in risk of
electric shock, fire, or damage to the equipment.
CAUTION: The AUX1 through AUX4 terminals are galvanically isolated, with approximately 5V
potential between them. DO NOT apply voltage to the terminals. Use dry contacts only.
CAUTION: Circuit breakers or fuses, proper ground circuits, disconnect and other safety equipment
and their proper installation are not provided by Phase Technologies, LLC, and are the responsibility
of the end user.

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CAUTION: Long leads between the unit and the motor with an unfiltered PWM voltage can lead
to dangerous voltage rise from reflected harmonics. Very long leads, such as in deep well
submersible pump applications, may require the use of a sine wave filter to remove most of the
harmonics from the waveform. Consult the factory or a knowledgeable source on motor
protection filters if your motor is more than 50 feet from the drive.
CAUTION: Failure to maintain adequate clearance for free flow of cooling air may lead to
overheating of the unit and cause damage or fire.
WARNING: Suitable for use in a circuit capable of delivering not more than 65 kA RMS
symmetrical amperes, 460 VAC.
WARNING: Wire used within the motor circuit and all field wiring terminals must be rated at least
60 °C.
WARNING: Use wire size suitable for Class 1 circuits.
WARNING: Input power connections should be made by a qualified electrician into a nominal
460V circuit for models with 460V input, with adequate current carrying capacity. Branch circuit
protection to the drive should be provided by appropriate size fuses or circuit breaker. Circuit
breaker and fuse ratings for each model are listed in Table 2, Table 3, and Table 4.
WARNING: These devices are equipped with integral solid-state short circuit protection. Integral
solid-state short circuit protection does not provide branch circuit protection. Branch circuit
protection must be provided in accordance with the National Electrical Code and any additional
local codes.
CAUTION: Use 600 V vinyl-sheathed wire or equivalent. The voltage drop of the leads needs to
be considered in determining wire size. Voltage drop is dependent on wire length and gauge.
Use copper conductors only.
CAUTION: Wires fastened to the terminal blocks shall be secured by tightening the terminal
screws to a torque value listed in Table 2, Table 3, and Table 4.
CAUTION: The maximum wire gauge for the input and output terminals are listed in Table 2,
Table 3, and Table 4.
CAUTION: Never allow bare wire to contact the metal surfaces.
CAUTION: Never connect AC main power to the output terminals U, V, and W.

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WARNING: Under certain conditions, the motor may automatically restart after a fault has
stopped it. Make sure power to the drive has been disconnected before approaching or servicing
the equipment. Otherwise, serious injury may occur.
CAUTION: Use caution when applying power to the main input terminals of the unit. If the drive
is programmed to allow automatic restarts, the drive will initialize in AUTO mode and the motor
load may start as soon as the drive is energized.
CAUTION: The AC motor load must be connected directly to the output terminals of the drive.
Do not install relays, disconnect switches, or wire nuts between the drive and the motor load.
CAUTION: Before the motor is connected to the output terminals, check all output lines for line-
to-ground faults using a megger. There is a direct path through the drive circuitry for ground fault
currents that can be triggered when power is applied to the input terminals, even though the
output switches are not activated. These currents can cause serious damage to drive circuitry
and are not covered under warranty.
CAUTION: Before touching any printed circuit board, place a hand on a bare metal surface of
the unit to discharge any static electricity. Electrostatic discharge (ESD) can damage printed
circuits and their components.
CAUTION: When the parameter, 1.2.1 ENABLE RESTARTS, is set to YES, the drive will
energize in AUTO mode. The motor load may automatically run as soon as the drive is
energized. To stop the motor, push the STOP/OFF key until the display indicates MANUAL or
OFF, or open AUX1 or AUX2. The RUN and STOP keys only work when in MAN mode. Refer
to the section on Keypad and Display for instructions on operating the keypad.
CAUTION: Operating the system in MANUAL mode on the keypad overrides remote signals
from any remote controls. Operating the system in this mode may lead to dangerous pressures
in closed plumbing systems.

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TABLE OF CONTENTS
INTRODUCTION...................................................................................................................................1
INSTALLATION....................................................................................................................................3
2.1 Mounting......................................................................................................................... 3
2.2 General Wiring Considerations....................................................................................... 4
2.3 Installing Power Cables ................................................................................................. 12
2.4 Backup Generator ......................................................................................................... 13
2.5 Output Filters................................................................................................................ 13
2.6 Control Terminals.......................................................................................................... 14
KEYPAD & DISPLAY .........................................................................................................................20
3.1 Using the Keypad and Display....................................................................................... 20
3.2 Keypad Main Menu Items............................................................................................. 22
3.3 Change Parameter Values............................................................................................. 23
3.4 Read Measured Values ................................................................................................. 23
3.5 Read Timers................................................................................................................... 24
3.6 Restart Log .................................................................................................................... 24
3.7 Fault Log........................................................................................................................ 25
3.8 Clear Memory ............................................................................................................... 26
3.9 Setup Wizards ............................................................................................................... 26
ADJUSTABLE PARAMETERS ..........................................................................................................29
4.1 Changing Parameter Values.......................................................................................... 29
4.2 Restore Default Parameter Settings ............................................................................. 29
4.3 Auto Restarts................................................................................................................. 29
4.4 All Parameters List ........................................................................................................ 30
4.5 Changed Parameter List................................................................................................ 30
4.6 File System .................................................................................................................... 30

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4.7 Menu Structure Overview .............................................................................................34
4.8 Parameter Tables...........................................................................................................36
OPERATION.......................................................................................................................................53
5.1 Commissioning the Unit ................................................................................................53
5.2 VFD Setup Procedure.....................................................................................................53
5.3 Ground Fault Sensitivity ................................................................................................54
5.4 Motor Overload Protection...........................................................................................54
5.5 System Configuration ....................................................................................................55
5.6 Start-Up and Shut-Down Ramp Times...........................................................................57
5.7 Motor Control Methods (V/f vs. Torque Control) .........................................................58
Constant Pressure Systems.............................................................................................................60
6.1 Control Principles of Constant Pressure Systems..........................................................60
6.2 PerfectPressure™Setup –Analog Constant Pressure...................................................62
6.3 Analog Constant Pressure Systems ...............................................................................63
6.4 Pre-Charge Mode ..........................................................................................................66
6.5 Lead/Lag Pump Control.................................................................................................66
6.6 Duplex / Multiplex Control............................................................................................68
6.7 Troubleshooting Constant Pressure Systems................................................................71
TROUBLESHOOTING........................................................................................................................72
7.1 Fault Codes ....................................................................................................................72
7.2 Clearing a Fault..............................................................................................................73
7.3 Fault Log ........................................................................................................................76
ROUTINE INSPECTION AND MAINTENANCE.................................................................................77
MODELS AND RATINGS...................................................................................................................78
9.1 Global Specifications .....................................................................................................78

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9.1.1 Derating Operating Temperature at High Elevations ..................................... 78
9.2 DXL Model Nomenclature............................................................................................. 79
9.2.1 DXL Single Phase Input Voltage....................................................................... 80
9.2.2 DXL Voltage Doubling...................................................................................... 80
9.3 3LHX Model Nomenclature........................................................................................... 81
9.4 1LHX Model Nomenclature........................................................................................... 83
9.5 Dimensional Drawings .................................................................................................. 84
9.5.1 D1 Open Frame Dimensions ........................................................................... 84
9.5.2 D1 NEMA 1 Frame Dimensions....................................................................... 85
9.5.3 D3 Open Frame Dimensions ........................................................................... 86
9.5.4 D3 NEMA 1 Frame Dimensions....................................................................... 87
9.5.5 D4 Open Frame Dimensions ........................................................................... 88
9.5.6 D4 NEMA 1 Frame Dimensions....................................................................... 89
9.5.7 L1 Open Frame Dimensions ............................................................................ 90
9.5.8 L1 NEMA 1 Frame Dimensions........................................................................ 91
9.5.9 L2 Open Frame Dimensions ............................................................................ 92
9.5.10 L2 NEMA 1 Frame Dimensions........................................................................ 93
9.5.11 L3 Open Frame Dimensions ............................................................................ 94
9.5.12 L3 NEMA 1 Frame Dimensions........................................................................ 95
9.5.13 L4 Open Frame Dimensions ............................................................................ 96
9.5.14 L4 NEMA 1 Frame Dimensions........................................................................ 97
WARRANTY POLICY.......................................................................................................................98

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INTRODUCTION
Phase Technologies’ variable frequency drives (VFDs) are inverter-based devices that convert AC power to
a three-phase variable frequency output which provides speed control for three-phase AC motors. The drives
offer advanced motor control features through an intuitive, easy-to-use interface.
The following block diagrams demonstrate how the drives convert incoming AC power to DC, then utilize an
inverter module to generate three-phase variable voltage and frequency output to control the speed of a motor.
Motor
DC bus
capacitor
DC Choke
(≥30HP)
AC to DC IGBT converter module DC to AC IGBT converter module
Figure 1 –DXL Series Block Diagram
L/C Filter
Motor
DC bus
capacitor
AC to DC IGBT converter module DC to AC IGBT converter module
Figure 2 –3LHX Series Block Diagram

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L/C Filter
Motor
DC bus
capacitor
AC to DC IGBT converter module DC to AC IGBT converter module
Figure 3 –1LHX Series Block Diagram
FEATURES
Low Line Side Harmonics (IEEE 519-2014 Compliant) –1LHX & 3LHX Models Only
All models of the LHX series employ active front end (AFE) technology. Active switching of the input IGBTs
allows the drive to draw the input current as a sine wave, greatly reducing the current distortion and line
harmonics associated with a diode bridge rectifier. Because of its favorable harmonic profile, additional input
line reactors and harmonic filters are NOT REQUIRED on the line side of the drive. Installations at 80% load
or greater will comply with IEEE 519, the international standard for allowable harmonic distortion on utility
mains.
Voltage Doubling
The input module of DXL and LHX drives is capable of significantly boosting the voltage on the DC bus.
Utilizing this feature, some models of the series convert 230 V single-phase or 230 V three phase line voltage
to 460 V three-phase output.

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INSTALLATION
2.1 Mounting
The drive must be mounted in an upright position with adequate clearance for cooling and maintenance
access. The mounting surface must be sturdy, non-flammable, and capable of bearing the weight of the unit.
Fasten the unit to the mounting surface using screws or bolts of an appropriate size through the holes on the
mounting brackets. Lifting hooks are provided on the top of some enclosures.
To allow for proper cooling and air circulation around the enclosure, maintain minimum clearances depicted
in Figure 4. Locate the frame size of your drive in Table 2 - Table 4. The drives are cooled by fans with
ventilation openings on the sides or bottom of the enclosure. The surface around the enclosure should be of
a non-flammable material and clear of obstacles. Locate the drawing of your drive model in Section 9 for
dimensions and mounting hole locations. Figure 4 details the minimum drive clearances required for
mounting.
CAUTION: Failure to maintain adequate clearance may lead to overheating of the unit and cause damage
or fire. Obstructions blocking intake fans can damage fans.
Figure 4 –Minimum Clearances
Minimum Clearances by Frame Size
Frame
Top Clearance
Bottom Clearance
D1
4 in
6 in
D3/L2
6 in
6 in
D4/L3
8 in
8 in
D5/L4
12 in
10 in
L5
16 in
12 in
Top Clearance
3” Minimum
Bottom Clearance
3” Minimum