Franklin Electric SUBDRIVE UTILITY User manual

2
COPYRIGHT INFORMATION
Copyright © 2018, Franklin Electric, Co., Inc. All rights reserved.
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and treaty provisions. No part of this material may be copied, reproduced, distributed, republished, downloaded, displayed,
posted or transmitted in any form by any means, including electronic, mechanical, photocopying, recording, or otherwise,
without prior written permission of Franklin Electric. You may download one copy of the publication from 35TUwww.franklinwa-
ter.comU35T onto a single computer for your personal, non-commercial internal use only. This is a single copy, single use license,
not a transfer of title, and is subject to the following restrictions: you may not modify the materials, use them for any com-
mercial purpose, display them publicly, or remove any copyright or other proprietary notices from them.
The information in this publication is provided for reference only and is subject to change without notice. While every effort
has been made to ensure the accuracy of this manual at the time of release, ongoing product improvements and updates can
render copies obsolete. Refer to 35T35TUwww.franklinwater.comU35T for the current version.
This publication is provided “as is” without warranties of any kind, either express or implied. To the fullest extent possible
pursuant to applicable law, Franklin Electric disclaims all warranties, express or implied, including but not limited to, implied
warranties of merchantability, fitness for a particular purpose, and non-infringement of intellectual property rights or other
violation of rights. Franklin Electric does not warrant or make any representations regarding the use, validity, accuracy, or
reliability of the material in this publication.
Under no circumstances, including but not limited to, negligence, shall Franklin Electric be liable for any direct, indirect, spe-
cial, incidental, consequential, or other damages, including, but not limited to, loss of data, property damage, or expense
arising from, or in any way connected with, installation, operation, use, or maintenance of the product based on the material
in this manual.
Trademarks used in this publication:
The trademarks, service marks, and logos used in this publication are registered and unregistered trademarks of Franklin
Electric and others. You are not granted, expressly, by implication, estoppel or otherwise, any license or right to use any
trademark, service mark, or logo displayed on this site, without the express written permission of Franklin Electric.
FE Logo and Design® and SubDrive Utility™ are registered trademarks of Franklin Electric.
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Franklin Electric
Technical Publications
9255 Coverdale Road
Fort Wayne, IN 46809

3
TABLE OF CONTENTS
PRODUCT INFORMATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
Description ........................................................................................................................................................... 7
Features ................................................................................................................................................................ 7
Models ...................................................................................................................................................................8
Submersible Applications ..........................................................................................................................8
Submersible PSC and Surface Applications ............................................................................................8
Pump Sizing and Performance .........................................................................................................................9
Generator Sizing ..................................................................................................................................................9
PRELIMINARY INSPECTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
What’s in the Box .............................................................................................................................................. 10
Unpacking and Inspection ............................................................................................................................... 10
INSTALLATION AND SETUP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -11
Installation Process .............................................................................................................................................11
Standard Submersible Constant Pressure System ...............................................................................12
Typical Surface Pressure Boosting Application .....................................................................................13
Shallow Well Surface Jet Pump Application .........................................................................................14
Minimum Pressure Tank and Supply Pipe Sizing ..................................................................................15
Physical Installation ...........................................................................................................................................16
Drive Mounting ...........................................................................................................................................17
Electrical Installation ..........................................................................................................................................18
Wiring Guidelines .......................................................................................................................................18
High Voltage Wiring Connections ...........................................................................................................21
Control Circuit Connections .....................................................................................................................23
Drive Configuration ...........................................................................................................................................24
Motor Type Selection ................................................................................................................................24
Pressure Input Selection (DIP SW2 – Position 1) .................................................................................25
Performance Settings ............................................................................................................................... 27
OPERATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Control Functions ..............................................................................................................................................29
Drive Display ..............................................................................................................................................29
Monitoring Functions ........................................................................................................................................30
Protection Features ...........................................................................................................................................30
Over Temperature Foldback ...................................................................................................................30
Motor Soft Start .........................................................................................................................................30
Motor Overload Protection ......................................................................................................................30
Broken Pipe Protection ............................................................................................................................30

4
MAINTENANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Troubleshooting ..................................................................................................................................................31
System Diagnostics Fault History ............................................................................................................31
Diagnostic Fault Codes .............................................................................................................................32
Symptom Based Troubleshooting ..........................................................................................................34
Periodic Maintenance ........................................................................................................................................36
Fan Replacement .......................................................................................................................................36
Screen Replacement .................................................................................................................................36
Firmware Updates .............................................................................................................................................37
Firmware Version Readout ......................................................................................................................37
Firmware Update Procedure ...................................................................................................................37
SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39
Common Specifications ....................................................................................................................................39
Accessories ........................................................................................................................................................40
Applicable Standards ........................................................................................................................................ 41
STANDARD LIMITED WARRANTY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

SAFETY INSTRUCTIONS
Hazard Messages
5
SAFETY INSTRUCTIONS
Hazard Messages
This manual includes safety precautions and other import-
ant information in the following formats:
IMPORTANT: Identifies information that controls correct
assembly and operation of the product.
NOTE: Identifies helpful or clarifying information.
This symbol alerts the user to the presence of dan-
gerous voltage inside the product that might cause
harm or electrical shock.
This symbol alerts the user to the presence of hot
surfaces that might cause fire or personal injury.
Before Getting Started
This equipment should be installed and serviced by techni-
cally qualified personnel. Failure to comply with national
and local electrical codes and with Franklin Electric recom-
mendations may result in electrical shock or fire hazard,
unsatisfactory performance, or equipment failure.
Read and follow instructions carefully to avoid injury and
property damage. Do not disassemble or repair unit unless
described in this manual.
Failure to follow installation/operation procedures and all
applicable codes may result in the following hazards:
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury.
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 personal injury.
Indicates a potentially hazardous situation
which, if not avoided could result in damage to
equipment or other property.
High voltages capable of causing severe
injury or death by electrical shock are
present in this unit.
• To reduce risk of electrical shock, disconnect power
before working on or around the system. More than
one disconnect switch may be required to de-ener-
gize the equipment before servicing.
• Make sure the ground terminal is connected to the
motor, control enclosures, metal plumbing, and other
metal near the motor or cable using wire no smaller
than motor cable wires.
Risk of bodily injury, electric shock, or
equipment damage.
• This equipment must not be used by children or per-
sons with reduced physical, sensory or mental abili-
ties, or lacking in experience and expertise, unless
supervised or instructed. Children may not use the
equipment, nor may they play with the unit or in the
immediate vicinity.
• Equipment can start automatically. Lockout-Tagout
before servicing equipment.
• Operation of this equipment requires detailed instal-
lation and operation instructions provided in this
manual for use with this product.
• Read entire manual before starting installation and
operation.
• End User should receive and retain manual for future
use.

SAFETY INSTRUCTIONS
Product Specific Precautions
6
Product Specific Precautions
High voltages capable of causing severe
injury or death by electrical shock are
present in this unit.
• To minimize risk of electrical shock, disconnect power
before working on or around the system.
• Serious or fatal electrical shock may result from fail-
ure to connect the ground terminal to the motor,
drive, metal plumbing, or other metal near the motor
or cable, using wire no smaller than motor cable
wires.
• Do not use motor in swimming areas.
• Capacitors inside the drive can still hold lethal voltage
even after power has been disconnected—ALLOW 5
MINUTES FOR DANGEROUS INTERNAL VOLTAGE TO
DISCHARGE BEFORE REMOVING COVER.
Risk of damage to drive or other equipment.
• Install and wire product according to the instructions
in thismanual.
• Take protective measures against ESD (Electrostatic
Discharge) before touching control boards during
inspection, installation or repair.
• This product is recommended for use with Franklin
Electric 4-inch submersible motors as specified in
this manual (Refer to “Common Specifications” on
page 39). Use of this unit with any other Franklin
Electric motor or with motors from other manufac-
turers may result in damage to both motor and elec-
tronics.
• In applications where water delivery is critical, a
replacement pressure sensor and/or back-up system
should be readily available if the drive fails to operate
as intended.

PRODUCT INFORMATION
Description
7
PRODUCT INFORMATION
Description
The Franklin Electric SubDrive Utility is a variable frequency drive (VFD) designed to control and
protect 2-wire, single-phase motors with 115 or 230 volt ratings, enhancing pump performance for
residential and light commercial water system applications. When used with Franklin Electric
motors ranging from 1/3 to 1 ½ HP, the SubDrive Utility drives a motor and pump at variable speeds
to maintain constant water pressure, even as user demands (water flow) change.
The SubDrive Utility is also compatible with single-phase 2-wire submersible
split capacitor (PSC) motors, above-ground booster pumps, and jet pumps
with overload current ratings from 4.6 A to 13.1 A. *
The SubDrive Utility is designed to convert a conventional pump system to a
variable speed constant pressure system by simply replacing the pressure
switch.
Features
Configuration
• Compatible with submersible and surface pumps and motors *
• No programming required with easy DIP switch setup
• Pressure sensor or transducer included for ease of installation
• Additional input for optional transducer for more precise control
• Works with small pressure tanks or existing larger tanks
Operation
• Three LED indicators for system status and troubleshooting
• 35 – 63 Hz frequency range with submersible motors
• 40 – 60 Hz frequency range with surface motors
• Accessory filtering available to remove radio frequency interference
Protection
• Protection against short circuit, under-load, overload, overheat, under-voltage, over-voltage,
surges, open circuit
• Broken-pipe detection
• User-defined under-load sensitivity
• Soft-start feature prevents water hammer and increases motor life
Communication
• USB port allows for easy firmware updates
*Firmware version 1.3.1 or later is required to operate submersible PSC or surface pumps.

PRODUCT INFORMATION
Models
8
Models
Submersible Applications
Motor and pump HP are programmed through DIP switch settings. Refer to “Franklin Electric 2-
Wire Submersible Motor Series (DIP SW1 – Positions 1–7)” on page 24.
Submersible PSC and Surface Applications
SubDrive Utility will operate many submersible PSC and Franklin Electric surface mounted pumps,
including C1, MH, BT4, DDS, and VersaJet series.
NOTE: Recommended for use on inverter duty rated motors. Follow motor manufacturer recom-
mendations for cable lengths when using variable frequency drives.
When operating a PSC or surface system, drives are configured based on motor current capacity
rather than horsepower. Motor current capacity is programmed through DIP switch settings. Refer
to “Maximum Amps (DIP SW1 – Positions 1–5)” on page 25.
Model Part Number 115 V 2-Wire 230 V 2-Wire
1/3 HP 1/2 HP 1/2 HP 3/4 HP 1 HP 1.5 HP
SubDrive Utility UT2W
- w/Pressure Sensor
5870202003 
SubDrive Utility UT2W
- w/Pressure Transducer
5870202003XD 
Model Part Number 115 or 230 V 2-Wire Motor Overload Protection Ratings (Amps)
4.6 4.7 5.0 6.0 6.2 6.4 8.1 8.4 9.1 9.5 9.8 10.0 10.4 11.0 12.0 13.1
SubDrive Utility UT2W
- w/Pressure Sensor
5870202003 
SubDrive Utility UT2W
- w/Pressure Transducer
5870202003XD 

PRODUCT INFORMATION
Pump Sizing and Performance
9
Pump Sizing and Performance
Maximum pump output using the SubDrive Utility is similar to the performance achieved using a
pressure switch. Therefore, the pump selection criteria are the same as if a pressure switch were
used.
Refer to the Franklin Electric AIM Manual for specific sizing information.
If a pump and motor as described above are already installed in the system, and the well system
components are in good working order, no further system upgrades are required. However, if the
existing pump and motor have not been properly chosen, or if the components of the well system
are not in good working order, the SubDrive Utility cannot be used to correct the problem or
extend the life of aging components.
Generator Sizing
Basic generator sizing for the Franklin Electric SubDrive Utility is 1.5 times the maximum input
watts consumed by the drive, rounded up to the next normal-sized generator.
Recommended minimum generator size for the SubDrive Utility is 6000 watts nominal.
IMPORTANT: Do not use with a Ground Fault Circuit Interrupter (GFCI). If using an externally regu-
lated generator, verify that the voltage and hertz are appropriate to supply the drive. Not compati-
ble with inverter-controlled generators.

PRELIMINARY INSPECTIONS
What’s in the Box
10
PRELIMINARY INSPECTIONS
What’s in the Box
1. Variable Frequency Drive (VFD)
2. Pressure Sensor (or Transducer) and Boot
3. Sensor Cable
4. Screwdriver/Adjustment Tool
5. Strain Relief Fitting
6. Installation Guide
Unpacking and Inspection
1. Inspect exterior of package for shipping damage. If there is damage, notify the shipping agent
and your sales representative.
2. Verify the part number and product ratings on the identification label are correct.
3. Remove VFD from the box and check for damage.
4. Remove the VFD cover and check part number, current rating, and nominal voltage on the
sticker attached to the side of the VFD. Make sure the electrical and environmental ratings are
correct and adequate for the application.

INSTALLATION AND SETUP
Installation Process
11
INSTALLATION AND SETUP
Installation Process
Refer to the following table when planning installation of the SubDrive Utility.
1 2 3 4 5 6
Plan System
Goals
Identify
Options
Select Control
Methods
Install VFD
Hardware
Install Wiring Program
Parameters
Intended Function
Hardware
Application
Automation
Protection
Pressure Feed-
back Type
Potentiometer
Location
Climate control
Distance
Measurements
Conduit
High Voltage
Control circuits
Basic
I/O setup
Option settings
1. The planned usage of the overall system will determine which options and control methods
are appropriate, as well as how the VFD should be installed and programmed. Refer to the fol-
lowing pages for examples of how the system might be used.
2. System options define and automate features that support the intended operation. These fea-
tures may require specialized control methods and programming. For more details, refer to
“Drive Configuration” on page 24, and “Performance Settings” on page 27.
3. The SubDrive Utility supports several methods for automating pump motor speed control.
Refer to “Drive Configuration” on page 24 for possible control setups.
4. The overall function of the system directly affects where and how the VFD should be mounted.
Refer to “Physical Installation” on page 16 for guidelines.
5. The selected motor application, along with the control method(s), determines how the VFD
should be connected. Refer to “Electrical Installation” on page 18 for more information.
6. The VFD can be quickly and easily programmed for most standard operations. Refer to “Drive
Configuration” on page 24. Advanced features or options may require additional adjustments
to achieve the desired performance. Refer to “Performance Settings” on page 27.
• Constant
pressure water
systems
• Pressure
Boosting
• Submersible
•Surface pump
• Bump mode
•Steady Flow
•Drawdown
• Overload
•Underload
• Motor Ground
Fault
• Drive
Temperature
• Transducer
•Pressure Sensor
• Setpoint value
•Underload
Sensitivity
• Inside
•Outside
• Temperature
•Moisture
• Wire sizes
•Filtering
requirements
• Clearance
•Drilling
• Routing
•Separation
• Grounding
•Inputs
• Outputs
• Feedback
inputs
• Application
•Motor ratings
• Setpoints
• Input functions
• Enable features

INSTALLATION AND SETUP
Installation Process
12
Standard Submersible Constant Pressure System
The above drawing illustrates how a typical submersible pump system should be arranged for a
constant pressure application.
1. Pump and Franklin Electric Motor. Refer to the Franklin Electric AIM Manual for pump, pipe,
and cable sizing information.
2. Check Valve
3. Pressure Relief Valve: Pressure relief valve must be able to pass full pump flow at 100 PSI.
4. Pressure Tank: Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 15.
5. Pressure Gauge
6. Pressure Sensor or Transducer: Install in a vertical position.
7. SubDrive Utility VFD
8. Power Supply from Circuit Breaker. Single phase, 115/230 VAC +/- 10%.
9. Power to Motor: Single phase.
A tank tee is recommended for mounting the tank, pressure sensor, pressure gauge, and pressure
relief valve. If a tank tee is not used, the pressure transducer or pressure sensor should be within 6
feet (1.8 meters) of the pressure tank to minimize pressure fluctuations. There should be no elbows
between the tank and pressure transducer or pressure sensor.
Risk of bodily injury or property damage.
• Pumps can develop very high pressure in some situations. Always install a pressure relief
valve able to pass full pump flow at 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full sys-
tem flow.

INSTALLATION AND SETUP
Installation Process
13
Typical Surface Pressure Boosting Application
The above drawing illustrates how a typical surface mounted pump system should be arranged for
a pressure boosting application.
1. Water Supply
2. Check Valve
3. Ball Valve
4. Pressure Relief Valve: Pressure relief valve must be able to pass full pump flow at 100 PSI.
5. Pressure Tank. Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 15.
6. Pressure Gauge
7. Pressure Sensor or Transducer. Locate within 5 feet (1.5 m) of pump discharge. Install in a ver-
tical position.
8. SubDrive Utility VFD
9. Power Supply from Circuit Breaker. Single phase, 115/230 VAC +/- 10%.
10. Power to Motor. Single-Phase.
11. Optional Bypass. For system maintenance.
IMPORTANT: If the pump is equipped with a built-in pressure switch, the power wires from the
VFD must bypass the pressure switch and connect directly to the motor.
Risk of bodily injury or property damage.
• Pumps can develop very high pressure in some situations. Always install a pressure relief
valve able to pass full pump flow at 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full sys-
tem flow.

INSTALLATION AND SETUP
Installation Process
14
Shallow Well Surface Jet Pump Application
The above drawing illustrates how a typical surface mounted jet pump system should be arranged
for a constant pressure application.
1. Well
2. Check Valve
3. Ball Valve
4. Pressure Relief Valve: Pressure relief valve must be able to pass full pump flow at 100 PSI.
5. Pressure Tank. Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 15.
6. Pressure Gauge
7. Pressure Sensor or Transducer. Locate within 5 feet (1.5 m) of pump discharge. Install in a ver-
tical position.
8. SubDrive Utility VFD
9. Power Supply from Circuit Breaker. Single phase, 115/230 VAC +/- 10%.
10. Power to Motor. Single-Phase.
IMPORTANT: If the pump is equipped with a built-in pressure switch, the power wires from the
VFD must bypass the pressure switch and connect directly to the motor.
Risk of bodily injury or property damage.
• Pumps can develop very high pressure in some situations. Always install a pressure relief
valve able to pass full pump flow at 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full sys-
tem flow.

INSTALLATION AND SETUP
Installation Process
15
Minimum Pressure Tank and Supply Pipe Sizing
A VFD system needs only a small pressure tank to maintain constant pressure, although a larger
tank may be used. If adding a SubDrive Utility to a conventional system with an existing large tank,
refer to “Tank Size and Bump Mode Adjustments” on page 28.
The pressure tank pre-charge setting should be 70% of the targeted system pressure. To check the
tank’s pre-charge, de-pressurize the water system by opening a tap with the drive off. Measure
with a pressure gauge at the inflation valve and make any necessary adjustments.
Refer to the following recommendations for best performance.
Submersible Pump Applications with Franklin Electric 2-Wire Motor
A minimum tank size of 20 gallons is recommended. This is to ensure water is available during the
minimum off time of the motor. If a smaller tank is used, the tank may empty if a large water
demand immediately follows a motor off cycle.
Submersible Pump Applications with PSC Motor
Surface Pump Applications
Minimum Supply Pipe Sizes
The minimum supply pipe inside diameter past the pressure sensor (transducer) should be
selected not to exceed a maximum velocity of 8 feet per second (2.4 m/s) based on the flow rate of
the system.
Pump Flow Rating Minimum Tank Size
Less than 12 gpm (45.4 lpm) 2 gallons (7.6 liters)
12 gpm (45.4 lpm) and higher 4 gallons (15.1 liters)
Maximum Pump Flow Minimum Tank Size
10 GPM 2 gallons (7.6 liters)
20 GPM 4 gallons (15.1 liters)
30 GPM 6gallons (22.7 liters)
40 GPM 8 gallons (30.3 liters)
Maximum GPM (lpm) Minimum Pipe Diameter
11.0 (41.6) 3/4”
19.6 (74.2) 1”
30.6 (115.8) 1-1/4”
44.1 (166.9) 1-1/2”
78.3 (296.4) 2”
176.3 (667.4) 2-1/2”

INSTALLATION AND SETUP
Physical Installation
16
Physical Installation
Environmental Requirements
The SubDrive Utility is intended for operation in ambient temperatures from -13 °F to 122 °F
(-25 °C to 50 °C). Use the following recommendations when selecting a location to mount the
drive:
• The unit should be mounted on a structure such as a wall
or post capable of supporting the weight of the unit.
• The SubDrive Utility electronics are air-cooled. Allow at
least 6 inches (15.24 cm) of clearance on each side and
18 inches (45.7 cm) below the unit for air flow.
• The mounting location should have access to 115/230 VAC
electrical supply and to the motor wiring. To avoid possible
interference with other appliances, refer to
“Cable Routing” on page 18.
Special Considerations for Outdoor Use
The SubDrive Utility is suitable for outdoor use with a NEMA 3R
rating; however, the following considerations should be made
when installing the controller outdoors:
• The unit must be mounted vertically with the wiring end
oriented downward, and the cover must be properly
secured (also applies to indoor installations).
• Mount the drive on a surface or back plate no smaller than the outer dimensions of the enclo-
sure.
• NEMA 3R enclosures are capable of withstanding downward-directed rain only. Protect from
hose-directed or sprayed water as well as blowing rain. Failure to do so may result in controller
failure.
• Install away from direct sunlight or locations subject to extreme temperatures or humidity.
• Use appropriate screening for the air inlet and outlet when installed in areas where insect or
small animal intrusion is an issue. Refer to “Accessories” on page 40 for ordering information.
• Screens should be cleaned on a regular basis to ensure proper airflow.
Risk of damage to drive, or malfunction can occur due to improper handling,
installation, or environment.
• Handle with care to prevent damage to the plastic components.
• Do not mount VFD on equipment with excessive vibration.
• Install in a location where temperature is within the range of product rating.
• Mount VFD vertically (top up) for proper heat dissipation.
• Do not mount VFD in direct sunlight or near other heat sources.
• Do not install in corrosive environments.
• Installation of non-approved screening may damage the drive and/or reduce output.

INSTALLATION AND SETUP
Physical Installation
17
Drive Mounting
The SubDrive Utility should be mounted on a surface or backplate no smaller than the outer con-
troller dimensions in order to maintain the NEMA 3R rating. The controller must be mounted at
least 18" (45.7 cm) off the ground.
The drive is mounted using the hanging tab on the top side of the enclosure, as well as two (2)
additional mounting holes on the back side. All three (3) screw hole locations should be used to
ensure the drive is securely mounted.
IMPORTANT: Do not drill holes in the drive.

INSTALLATION AND SETUP
Electrical Installation
18
Electrical Installation
Wiring Guidelines
Follow the recommendations in this section to ensure best performance of the SubDrive Utility and
to avoid interference with other devices.
Cable Routing
Use the above diagram as a guide when routing wiring to VFD.
1. Mount the drive as close as possible to the service entrance panel. Wire directly to the service
entrance. Do not connect to a sub-panel.
2. Use a dedicated branch circuit for the drive. Refer to “Fuse/Circuit Breaker and Wire Sizing” on
page 19.
3. Route motor wiring out of building as soon as possible. Separate input power and motor wir-
ing by at least 8 in. (20.3 cm). Refer to “Maximum Motor Cable Length” on page 20.
4. Cross over other branch circuits and facility wiring at a 90angle. If it is necessary to run wir-
ing in parallel, separate by at least 8 in. (20.3 cm).
All control wiring—sensors, switches, transducers, etc.—should be in a separate conduit routed
individually, not parallel, from high voltage wiring. In addition, any shielded cables should be prop-
erly grounded.

INSTALLATION AND SETUP
Electrical Installation
19
Branch 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, or the equivalent. Drive shall be protected by fuse or inverse-time circuit breaker only,
rated 300 V, and a maximum 300% of full load motor output current rating as noted in the table
below.
Fuse/Circuit Breaker and Wire Sizing
1 Based on a 3% voltage drop.
*90 C Insulation only.
Note: SubDrive Utility minimum breaker amps may be lower than AIM Manual specifications
because of the soft-starting characteristic of the drive.
Risk of damage to VFD, or malfunction can occur.
Follow all wire routing and grounding instructions carefully. Inductive currents caused by paral-
lel wiring, or close proximity between high voltage and control wiring can cause unexpected
behaviors.
• Do not run input power and motor wires in the same conduit.
• Do not run motor wires from multiple VFDs in common conduit.
• Do not run control wiring parallel with high voltage wiring.
• Do not install a magnetic contactor or disconnect in the motor circuit.
• Do not run VFD wiring parallel with house or out-building wiring.
• Do not use aluminum wires for VFD connections.
• Do not use with a Ground Fault Circuit Interrupter (GFCI) between breaker panel and motor.
• All wiring must comply with the National Electrical Code and local codes.
• Improper splicing or damage to motor cable insulation may expose the conductor(s) to
moisture and can produce motor cable failure.
Model Input
Voltage
Motor HP Fuse/Breaker
Amps
AWG Copper Wire Sizes, 75° C Insulation, and Panel to Drive Cable
Lengths (in feet)1
14 12 10 8 6 4 3 2 1
SubDrive
Utility
115 1/2 (0.37 kW) 15 40*60 100 155 245 390 485 635 805
230 1/2 (0.37 kW) 15 130 205 340 525 835 1315 1635 2150 2720
230 3/4 (0.55 kW) 15 130 150 250 390 620 975 1210 1595 2020
230 1.0 (0.75 kW) 20 70*110*185 285 450 715 885 1165 1475
230 1.5 (1.1 kW) 25 – – 140 215 340 540 670 880 1115

INSTALLATION AND SETUP
Electrical Installation
20
Maximum Motor Cable Length
1 Based on a 5% voltage drop with 1000 ft limit.
Notes:
• Drive input voltage and motor nameplate voltage must match.
• The use of 600 V minimum rated motor cable is required.
• Maximum allowable wire lengths are measured between the controller and motor, based on
AIM Manual requirements with 1000 ft limit. Larger wire and filtering are required if exceeding
the 1000 ft limit.
• Flat-jacketed submersible motor cable is recommended. All splices in the motor cable must be
properly sealed with watertight shrink tubing. Use extreme caution to avoid damaging or
compromising the motor cable insulation during installation or service.
Conduit Locations and Sizing
Use appropriate strain relief or conduit connectors.
1. Incoming power supply—Hole = 0.88 in. (22.2 mm)
2. Power output to motor—Hole = 0.88 in (22.2 mm), Knockout = 1.11 in. (28.2 mm)
3. Control wiring (transducer/sensor) input—Hole = 0.5 in. (12.7 mm)
Model Motor Family Motor
Voltage
Horsepower AWG 600V Copper Wire Sizes, 75° C Insulation, and Motor Cable
Lengths (in feet)1
14 12 10 8 6 4
SubDrive
Utility
244 502 xxxx 115 1/3 (0.25 kW) 100 160 250 390 620 960
244 504 xxxx 115 1/2 (0.37 kW) 100 160 250 390 620 960
244 505 xxxx 230 1/2 (0.37 kW) 400 650 1000 – – –
244 507 xxxx 230 3/4 (0.55 kW) 300 480 760 1000 – –
244 508 xxxx 230 1.0 (0.75 kW) 250 400 630 990 – –
244 509 xxxx 230 1.5 (1.1 kW) 190 310 480 770 1000 –