Franklin Electric SUBDRIVE CONNECT PLUS User manual

franklinwater.com
SUBDRIVE CONNECT PLUS
Owner's Manual

2
COPYRIGHT INFORMATION
Copyright © 2020, Franklin Electric, Co., Inc. All rights reserved.
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provisions. No part of this material may be copied, reproduced, distributed, republished, downloaded, displayed, posted or transmitted
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non-commercial internal use only. This is a single copy, single use license, not a transfer of title, and is subject to the following restric-
tions: you may not modify the materials, use them for any commercial 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 obso-
lete. Refer to 35T35TUwww.franklinwater.comU35T for the current version.
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applicable law, Franklin Electric disclaims all warranties, express or implied, including but not limited to, implied warranties of merchant-
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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, special, inciden-
tal, 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.
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logo displayed on this site, without the express written permission 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
Applications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
Frame 2 Models - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
Frame 3 Models - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
UNPACKING AND INSPECTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
Transportation and Storage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
Unpacking- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
What’s in the Box - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
INSTALLATION PLANNING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
Planning Considerations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
INSTALLATION AND SETUP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
Installation Process - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
Standard Submersible Constant Pressure System - - - - - - - - - - - - - - - - - - - - - - 11
Typical Surface Pressure Boosting Application- - - - - - - - - - - - - - - - - - - - - - - - 12
Minimum Pressure Tank and Supply Pipe Sizing - - - - - - - - - - - - - - - - - - - - - - - 13
PHYSICAL INSTALLATION- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Environmental Requirements- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Special Considerations for Outdoor Use- - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Mounting the Drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Drive Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15
Frame 2 and Frame 3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15
ELECTRICAL INSTALLATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
Wiring Guidelines - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
Cable Routing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
Branch Circuit Protection- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
Terminal Block Wire Size - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
Input Wire Sizing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
Output (Motor) Wire Sizing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Conduit Locations and Sizing- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
High Voltage Wiring Connections- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
Incoming Power Supply - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
Ground Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
Power Circuit and Motor Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - 21
Control Circuit Connections- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -22
DRIVE CONFIGURATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -23
DIP Switch Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -23
Basic Setup (DIP SW1 – Position 1) - - - - - - - - - - - - - - - - - - - - - - - - - - - - -23
Carrier Frequency Switch (DIP SW1 – Position 2) - - - - - - - - - - - - - - - - - - - - - -23
Pipe Fill Switch (DIP SW1 – Position 3) - - - - - - - - - - - - - - - - - - - - - - - - - - -23
Analog Output Selection (DIP SW1 – Position 4)- - - - - - - - - - - - - - - - - - - - - - -23
Bump Mode Configuration (DIP SW1 – Position 5) - - - - - - - - - - - - - - - - - - - - - 24
Broken Pipe Protection (DIP SW1 – Position 6) - - - - - - - - - - - - - - - - - - - - - - 24
Menu Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -25
Menu Navigation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 25
Special Functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -27

4
OPERATION- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Hand/Auto Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
System Status - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Fault Detected - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Protection Features- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Moisture Sensor - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Over Temperature Foldback- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Motor Slow Start - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Motor Overload Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Broken Pipe Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Underload Protection- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
COMMUNICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
FE Connect Mobile Application - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Setup Bluetooth Connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Using the Mobile App- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32
ADVANCED APPLICATION OPTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33
MultiDrive Feature (mobile app only) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33
Methods of Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33
VFD Role Definitions for MultiDrive Operation - - - - - - - - - - - - - - - - - - - - - - - 33
Sequence Assignment - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34
Fault Handling - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34
Installation and Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 35
Communications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 35
MultiDrive Parameter Programming - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
MAINTENANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37
Programming Defaults - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37
Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
System Diagnostics Fault History - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
Diagnostic Fault Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
Symptom Based Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45
Periodic Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47
Battery Replacement - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47
Airflow Channel Cleaning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 48
Fan Replacement- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
Firmware Update Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50
Fault Log Download - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50
SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51
Common Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51
Applicable Standards - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51
Accessories- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 52
STANDARD LIMITED WARRANTY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 53

SAFETY INSTRUCTIONS
5
SAFETY INSTRUCTIONS
Hazard Messages
This manual includes safety precautions and other important
information in the following formats:
IMPORTANT: Identifies information that controls correct assem-
bly and operation of the product.
NOTE: Identifies helpful or clarifying information.
This symbol alerts the user to the presence of dangerous
voltage inside the product that might cause harm or elec-
trical shock.
This symbol alerts the user to the presence of hot sur-
faces that might cause fire or personal injury.
Before Getting Started
This equipment should be installed and serviced by technically
qualified personnel who are familiar with the correct selection
and use of appropriate tools, equipment, and procedures. Failure
to comply with national and local electrical and plumbing codes
and within Franklin Electric recommendations may result in elec-
trical shock or fire hazard, unsatisfactory performance, or equip-
ment failure.
Read and follow instructions carefully to avoid injury and prop-
erty damage. Do not disassemble or repair unit unless described
in this manual.
Failure to follow installation or 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 discon-
nect switch may be required to de-energize 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 property damage.
• This equipment must not be used by children or persons
with reduced physical, sensory or mental abilities, or lack-
ing 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.
• This equipment produces high temperatures during nor-
mal operation. Use caution when contacting surfaces.
• Operation of this equipment requires detailed installation
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.
• Keep safety labels clean and in good condition.

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 failure 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 remove or install VFD cover for wiring, periodic
inspections, or adjustments while power is applied, or the
unit is in operation.
• Capacitors inside the drive can still hold lethal voltage
even after power has been disconnected—ALLOW 5 MIN-
UTES FOR DANGEROUS INTERNAL VOLTAGE TO DIS-
CHARGE BEFORE REMOVING COVER.
• Operate VFD and control devices with dry hands.
• Do not use VFD if power or motor cable is damaged.
• Do not apply power to a damaged VFD or to VFD with
missing parts.
• Perform wiring after VFD has been mounted. Otherwise,
electric shock or bodily injury can occur.
• Do not handle the VFD with wet hands or when standing
on a wet or damp surface, or in water.
Risk of damage to drive or other equipment.
• Install and wire VFD according to the instructions in this
manual.
• Take protective measures against ESD (Electrostatic Dis-
charge) before touching control boards during inspection,
installation or repair.
• This product is recommended for use with Franklin Electric
4-inch and 6-inch submersible motors or above-ground
centrifugal motors. Use of this unit with any other Franklin
Electric motor or with motors from other manufacturers
may result in damage to both motor and electronics.
• In applications where water delivery is critical, a replace-
ment 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 Connect Plus product family includes variable frequency drives (VFD)
designed to control and protect three-phase motors. The drives provide enhanced pump performance for
commercial, agricultural, and irrigation water system applications.
When used with three-phase Franklin Electric motors, the SubDrive Connect Plus adjusts
motor and pump speeds to maintain constant water pressure, even as user demands
(water flow) change. Frame 2 models operate motors up to 20 HP, and Frame 3 models
operate motors up to 30 HP.
The SubDrive Connect Plus series provides the capability to operate a three-phase motor
with three-phase incoming power. The 230V models also provide the capability to operate
a three-phase motor with single-phase incoming power. Both single phase and three phase
input power models add efficiency and quiet performance to rural businesses and farming
operations.
Features
Configuration
• Compatible with three-phase submersible and surface pumps and motors
• Simple programming with LCD display menu-driven setup, DIP switches, and SubDrive
Connect Plus mobile app
• MultiDrive function for Lead/Lag pump operation via mobile app
• Works with small pressure tanks and existing larger tanks
Operation
• Easy-to-read LCD display for system status identification
• User-defined motor frequency range
• Control inputs such as Run/Stop, Hand/Auto, and Dual Set Point
• Run and alarm relays provide switching for external monitors or systems
• Advanced filtering to remove radio frequency interference
Protection
• Protection against short circuit, incorrect wiring, surges, underload, overload, drive overheat, under-
voltage, overvoltage, phase loss, phase imbalance, output open phase, overpressure, and sensor fault
• Slow-start and pipe fill features prevents water hammer and increases motor life
• Broken-pipe detection
• User-defined under-load sensitivity and off time
• Ground Fault Protection for motor output
• External inputs for Dual Pressure setpoints, Run/Stop, and Hand/Auto
• Moisture Sensor input stops pump when water is detected. Refer to “Accessories” on page 52 for order-
ing information for the Franklin Electric Moisture Sensor Kit.
• PT100/PT1000 input for motor temperature alarm and fault
Communication
• The SubDrive Connect Plus mobile app can be used to adjust advanced settings, monitor drive charac-
teristics, view settings changes and fault history, and update drive firmware.

PRODUCT INFORMATION
Applications
8
Applications
Frame 2 Models
Frame 3 Models
NOTE: Recommended for use on inverter duty rated motors (Centrifugal models). Follow motor manufac-
turer recommendations for cable lengths when using variable frequency drives.
Drive is suitable for use on a circuit capable of delivering not more than 5000 RMS symmetrical amperes.
Model No. Volts Weight
lbs/kg Motor HP 3Φ Input Motor HP 1Φ Input Max Output Amps Pump Type DV/DT Filter
SDCP-SUB0723
230
47.8 /21.7 7.5 3 28 Submersible Yes
SDCP-SUB1023 48.3/21.9 10 5 37 Submersible Yes
SDCP-CEN0723 43.8/19.9 7.5 3 28 Centrifugal No
SDCP-CEN1023 44.2/20.0 10 5 37 Centrifugal No
SDCP-SUB1043
460
48.1/21.8 10 N/A 16 Submersible Yes
SDCP-SUB1543 48.5/22.0 15 N/A 24 Submersible Yes
SDCP-SUB2043 48.9/22.2 20 N/A 31 Submersible Yes
SDCP-CEN1043 44.0/20.0 10 N/A 16 Centrifugal No
SDCP-CEN1543 44.4/20.1 15 N/A 24 Centrifugal No
SDCP-CEN2043 44.8/20.3 20 N/A 31 Centrifugal No
Model No. Volts Weight
lbs/kg HP 3Φ Input HP 1Φ Input Max Output Amps Pump Type DV/DT Filter
SDCP-SUB1523 230 77.2/35.0 15 7.5 47 Submersible Yes
SDCP-CEN1523 71.2/32.3 15 7.5 47 Centrifugal No
SDCP-SUB2543
460
77.6/35.2 25 N/A 38 Submersible Yes
SDCP-SUB3043 78.0/35.4 30 N/A 46 Submersible Yes
SDCP-CEN2543 71.7/32.5 25 N/A 38 Centrifugal No
SDCP-CEN3043 72.1/32.7 30 N/A 46 Centrifugal No

UNPACKING AND INSPECTION
Transportation and Storage
9
UNPACKING AND INSPECTION
Transportation and Storage
The drive should be stored in the shipping carton or crate before installation.
Unpacking
1. Inspect exterior of package for shipping damage. If there is damage, notify the shipping agent and your
sales representative.
2. Make sure the part number and product ratings on the identification label are correct for the applica-
tion.
3. Remove drive from the box and check for damage.
4. Make sure the product ratings on the nameplate match the package label.
What’s in the Box
1. Variable Frequency Drive (VFD)
2. Pressure Transducer with Isolator
3. Transducer Cable
4. Screwdriver/Adjustment Tool
5. Strain Relief Fitting
6. Owner’s Manual
Risk of damage to drive or other equipment.
• Do not stack drive boxes more than three high (Frame 2) or two high (Frame 3) when palleting for
storage.
• Do not place heavy items on drive.
• Do not drop drive or subject it to hard impact.
• Dispose of drive properly as industrial equipment waste.
Risk of personal injury or damage to drive or other equipment.
• Use two persons when lifting the drive for transport or installation. If using lifting equipment, it must
be in good condition and rated for at least 5 times the weight of the drive.
Refer to “Applications” on page 8 for drive weight.

INSTALLATION PLANNING
Planning Considerations
10
INSTALLATION PLANNING
Planning Considerations
STEP 1
Plan System
Goals
Intended Function:
Constant Pressure Water Systems
Pressure Boosting
Install
Wiring
STEP 5
Conduit Rules:
Routing
Separation
High Voltage Connections:
Grounding
Inputs
Outputs
Control Circuits:
Feedback Inputs
Relay Outputs
Communications
STEP 3
Select
Control
Methods
Pressure Feedback Type:
Transducer
Pressure Sensor Switches
Hand/Auto
Run/Stop
Type of Communication:
Drive-to-drive
Control Input
FE Connect Mobile App
Install VFD
Hardware
STEP 4
Location:
Inside
Outside
Climate Control:
Temperature
Moisture
Distance to the Well:
Wire Sizes
Filtering Requirements
Drive Size:
Clearance
Drilling
Program
Parameters
STEP 6 Basic Programming:
Application
Motor Ratings
Setpoints
I/O Setup:
Input Functions
Output Functions
Other Available Options:
Enable Features
STEP 2
Identify
Options
Type of Automation:
Bump Mode
Drawdown
Desired Protection:
Overload
Underload
Motor Ground Fault
Moisture Sensor
Is it Multi Pump?
Multi Drive
Lead/Lag
Hardware Application:
Submersible
Surface Pump
Single- or Three-Phase
Input Voltage
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 following
pages for examples of how the
system might be used.
System options define and automate
features that support the intended
operation. These features may
require specialized control methods
and programming. For more details,
refer to “Drive Configuration” on
page 23, and “Advanced Application
Options” on page 29.
The SubDrive Connect supports
several methods for automating
pump motor speed control. Refer to
“Drive Configuration” on page 23
for possible control setups.
The overall function of the system
directly affects where and how the
VFD should be mounted. Refer to
“Physical Installation” on page 14 for
guidelines.
The selected motor application,
along with the control method(s),
determines how the VFD should be
connected. Refer to “Electrical
Installation” on page 16 for more
information.
The VFD can be quickly and easily
programmed for most standard
operations. Refer to “Drive
Configuration” on page 23. Advanced
features or options may require
additional adjustments to achieve the
desired performance. Refer to
“Advanced Application Options” on
page 29 and to “FE Connect Mobile
Application” on page 31.

INSTALLATION AND SETUP
Installation Process
11
INSTALLATION AND SETUP
Installation Process
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 300 PSI.
4. Pressure Tank: Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 13.
5. Pressure Gauge
6. Pressure Transducer or Sensor: Install in a vertical position.
7. SubDrive Connect Plus VFD
8. Power Supply from Electrical Panel: Single phase (shown) 208/230 VAC ± 10%, three phase 230 VAC
±10%, or three phase 460 VAC ±10% (depending on drive model rating).
9. Power to Motor: Three-Phase voltage depending on drive model rating.
A tank tee is recommended for mounting the tank, pressure transducer, 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 up to 300 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full system flow.

INSTALLATION AND SETUP
Installation Process
12
Typical Surface Pressure Boosting Application
The above drawing illustrates how a typical surface mounted pump system should be arranged for a pres-
sure 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 300 PSI.
5. Pressure Tank. Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 13.
6. Pressure Gauge
7. Pressure Transducer or Sensor: Locate within 5 feet (1.5 m) of pump discharge. Install in a vertical
position.
8. SubDrive Connect Plus VFD
9. Power Supply from Electrical Panel. Single phase (shown) 208/230 VAC ± 10%, three phase 230 VAC
±10%, or three phase 460 VAC ±10% (depending on drive model rating).
10. Power to Motor: Three-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 up to 300 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full system flow.

INSTALLATION AND SETUP
Installation Process
13
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. The pressure tank pre-charge setting should be 70% of the targeted system pressure.
NOTE: The included transducer measures up to 200 PSI, ensure that the pressure tank is rated adequately.
For larger flow rates, consult pressure tank manufacturer for tank size selection.
Minimum Supply Pipe Sizes
The minimum supply pipe 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.
IMPORTANT: Water system piping should be performed by an experienced professional to ensure adequate
flow.
Maximum Pump Flow Minimum Tank Size
10 GPM 2 gallons (7.6 liters)
20 GPM 4 gallons (15.1 liters)
30 GPM 4 gallons (15.1 liters)
40 GPM 8 gallons (30.3 liters)
Over 40 GPM 20 gallons (75.7 liters)
Maximum GPM (lpm) Minimum Pipe Diameter
11.0 (41.6) 0.75”
19.6 (74.2) 1”
30.6 (115.8) 1.25”
44.1 (166.9) 1.5”
78.3 (296.4) 2”
122.4 (463) 2.5”
176.3 (667) 3”
240.0 (908) 3.5”
313.3 (1186) 4”
396.6 (1501) 4.5”
489.6 (1853) 5”

PHYSICAL INSTALLATION
Environmental Requirements
14
PHYSICAL INSTALLATION
Environmental Requirements
The drive is intended for operation in ambient temperatures from -13 °F to 110 °F (-25 °C to 40 °C). Use the
following recommendations when selecting a location to mount the drive:
• The drive electronics are air-cooled. Allow at least 6 inches (15.24 cm) of clearance around the unit for
air flow.
Special Considerations for Outdoor Use
The drive is suitable for outdoor use with a NEMA 3R rating; however, the fol-
lowing considerations should be made for outdoor installations:
• Mount the drive on a wall or back plate that is at least 6” (15.cm) larger
than the outer dimensions of the enclosure in order to maintain the NEMA
3R rating.
• The unit must be mounted vertically with the wiring end oriented
downward, and the cover must be properly secured (also applies to indoor
installations).
• 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.
Mounting the Drive
The mounting location should have nearby access to an appropriate electrical supply and to the motor wiring.
Refer to “Electrical Installation” on page 16.
1. Mount the drive using all three keyhole slots on the top side of the enclosure.
2. At least two keyhole screws at the top must attach to a solid structure such as a stud or brace.
3. Secure the three additional mounting holes on the bottom.
4. All six screw hole locations should be used to ensure the drive is securely mounted.
IMPORTANT: Do not drill holes in the drive.
Risk of damage to drive, or malfunction can occur due to improper handling,
installation, or environment.
• 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.
Risk of bodily injury or damage to drive or other equipment.
• The drive must be mounted on a structure such as a wall or post capable of supporting the weight of the
unit, at least 18” (45.7 cm) above the ground. Refer to “Applications” on page 8 for drive weight.
• The drive must be mounted on a heat-resistant back plate.
• Ensure suitable mounting hardware is used when installing the drive.
• Do not install the drive on unreinforced drywall.
• Use two persons when lifting the drive for transport or installation. If using lifting equipment, it must be in
good condition and rated for at least 5 times the weight of the drive.
• Wear protective gloves while installing the drive to guard against sharp edges.

PHYSICAL INSTALLATION
Drive Dimensions
15
Drive Dimensions
Frame 2
Frame 3

ELECTRICAL INSTALLATION
Wiring Guidelines
16
ELECTRICAL INSTALLATION
Wiring Guidelines
Follow the recommendations in this section to ensure best performance of the drive and to avoid interfer-
ence with other devices.
Cable Routing
Use the following 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 “Input Wire Sizing” on page 17.
3. Route motor wiring out of building as soon as possible to reduce the chance of EMI or electrical interference
on the motor cables. Separate input power and motor wiring by at least 8 in. (20.3 cm). Refer to “Centrifugal
Motors” on page 18.
4. Cross over other branch
circuits and facility wir-
ing at a 90 angle. If it is
necessary to run wiring
in parallel, separate by
at least 8 in. (20.3 cm).
5. All control wiring—sen-
sors, switches, trans-
ducers, etc.—should be
in a separate conduit
routed individually, not
parallel, from high volt-
age wiring. In addition,
any shielded cables
should be properly
grounded.
Risk of damage to VFD, or malfunction can occur.
Follow all wire routing and grounding instructions carefully. Inductive currents caused by parallel 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 any wiring through the airflow channel in the back of the drive.
• 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).
• 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.
• For retrofit application, make sure to check the integrity of power and motor leads. This requires
measuring the insulation resistance with a suitable megohm-meter.
8" (20.3 cm) 90º
8" (20.3 cm)
1
2
3
4
90º
4

ELECTRICAL INSTALLATION
Wiring Guidelines
17
Branch Circuit Protection
Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protec-
tion must be provided in accordance with the National Electrical Code and any additional local codes, or the
equivalent. Drive shall be protected by fast-acting Class T fuses only.
Terminal Block Wire Size
Maximum Torque
Do not use power tools to tighten terminal block screws, use hand tools only. Tighten terminal block screws
to a maximum torque of:
AWG 20 to AWG 6 - 15 in-lbs (1.7 Nm)
AWG 20 to AWG 2 - 31 in-lbs (3.5 Nm)
AWG 16 to AWG 2/0 - 50 in-lbs (5.5 Nm)
Input Wire Sizing
Verify that the dedicated branch circuit for the drive is equipped with a properly-sized fast-acting Class T
fuse. This table includes single-phase input for 230V drives.
1 xxx may be SUB or CEN for this table
2 Wire sizes based on a 3% voltage drop.
Bold numbers with gray background indicate wire sizes that are larger than the maximum wire rating of the drive’s
terminal blocks. External junction box is required to splice cable sizes.
Input Fuse
SubDrive Connect Plus models are suitable for use with fast-acting Class T fuses only.
Generator Sizing
Generator sizes noted above are a minimum recommendation.
1-Phase: Generators should be sized such that their Prime Rating for current capability (typically specified with a
power factor of 1.0) exceeds 150% of the Rated Input Amps for the SubDrive Connect Plus model being used.
3-Phase: Generators should be sized such that their Prime Rating for current capability (typically specified with a
power factor of 0.8) exceeds the Rated Input Amps for the SubDrive Connect Plus model being used.
Frame Size Input Terminal Block
SDC Plus All Models Output Terminal Block SDC Plus SUB Models Output Terminal Block SDC Plus CEN Models
Min AWG Max AWG Min AWG Max AWG Min AWG Max AWG
Frame 2 20 6 20 2 20 6
Frame 3 20 2 16 2/0 20 2
Model
1
Input
Voltage Input Phase
Rated
Input
Amps
Minimum
Fuse
Amps
Input
Watts
(kW)
Generator
(kVA)
AWG 600V Copper Wire Sizes, 75° C Insulation, and Motor Cable Lengths (in
feet) 2
10 8 6 4 3 2 1 0 2/0
SDCP-xxx0723
230 1
29 35 1.7 11 144 217 336 515 628 774 935 1128 1363
SDCP-xxx1023 42 50 5.6 15 - 150 232 356 433 534 646 779 941
SDCP-xxx1523 61 70 9.1 22 - - 160 245 298 368 445 536 648
SDCP-xxx0723
230 3
33.5 40 9.2 14 136 207 321 493 602 744 904 1094 1327
SDCP-xxx1023 44 50 13.2 18 - 157 244 376 459 567 688 833 1010
SDCP-xxx1523 56.5 60 17.6 23 - - 190 293 357 441 536 649 787
SDCP-xxx1043
460 3
27 30 14.8 22 338 513 795 1225 1495 1847 2243 2715 3293
SDCP-xxx1543 37 40 18.5 30 - 374 580 894 1091 1348 1637 1981 2403
SDCP-xxx2043 41 45 21.4 33 - 338 524 806 985 1216 1477 1788 2169
SDCP-xxx2543 50 60 17.2 40 - 277 430 661 807 997 1211 1466 1778
SDCP-xxx3043 60 70 33.5 48 - - 358 551 673 831 1009 1222 1482

ELECTRICAL INSTALLATION
Wiring Guidelines
18
Output (Motor) Wire Sizing
Submersible Motors
A gray background indicates wire sizes that are larger than the maximum wire rating of the drive’s terminal blocks.
External junction box required to splice cable sizes.
Bold lengths only meet the US National Electrical Code ampacity requirements for individual conductors in free air or
water. Lengths NOT in bold meet NEC ampacity requirements for either individual conductors or jacketed cable.
NOTE: Motor cable lengths exceeding 1000 feet may require an external sine filter to be installed between the drive
output and motor.
Centrifugal Motors
A gray background indicates wire sizes that are larger than the maximum wire rating of the drive’s terminal blocks.
External junction box required to splice cable sizes.
Bold lengths only meet the US National Electrical Code ampacity requirements for individual conductors in free air or
water. Lengths NOT in bold meet NEC ampacity requirements for either individual conductors or jacketed cable.
NOTE: Motor cable lengths exceeding 1000 feet may require an external sine filter to be installed between the drive
output and motor.
NOTE: Recommended for use on inverter duty rated motors. Follow motor manufacturer recommendations for cable
lengths when using variable frequency drives.
Model Rated
Output
Volts
Input
Phase
Rated
Output
Amps
Rated
Output
HP
AWG 600V Copper Wire Sizes, 75° C Insulation, and Motor Cable Lengths (in feet)
14 12 10 8 6 4 3 2 1 0 2/0 3/0
SDCP-SUB0723
230 1
11 3 240 390 620 990 1540 2400 2980 3660 4480 5470 6690 8020
SDCP-SUB1023 18 5 140 230 370 590 920 1430 1790 2190 2690 3290 4030 4850
SDCP-SUB1523 27 7.5 —160 260 420 650 1020 1270 1560 1920 2340 2870 3440
SDCP-SUB0723
230 3
27 7.5 — 160 260 420 650 1020 1270 1560 1920 2340 2870 3440
SDCP-SUB1023 37 10 — — 190 310 490 760 950 1170 1440 1760 2160 2610
SDCP-SUB1523 48 15 — — — 210 330 520 650 800 980 1200 1470 1780
SDCP-SUB1043
460 3
17.5 10 310 500 790 1250 1960 3050 3800 4680 5750 7050 — —
SDCP-SUB1543 26 15 — 340 540 850 1340 2090 2600 3200 3930 4810 5900 7110
SDCP-SUB2043 31 20 — — 410 650 1030 1610 2000 2470 3040 3730 4580 5530
SDCP-SUB2543 39.5 25 — — 330 530 830 1300 1620 1990 2450 3010 3700 4470
SDCP-SUB3043 47.5 30 — — 270 430 680 1070 1330 1640 2030 1490 3060 3700
Model Rated
Output
Volts
Input
Phase
Rated
Output
Amps
Rated
Output
HP
AWG 600V Copper Wire Sizes, 75° C Insulation, and Motor Cable Lengths (in feet)
14 12 10 8 6 4 3 2 1 0 2/0 3/0
SDCP-CEN0723
230 1
11 3 240 390 620 990 1540 2400 2980 3660 4480 5470 6690 8020
SDCP-CEN1023 18 5 140 230 370 590 920 1430 1790 2190 2690 3290 4030 4850
SDCP-CEN1523 27 7.5 —160 260 420 650 1020 1270 1560 1920 2340 2870 3440
SDCP-CEN0723
230 3
27 7.5 — 160 260 420 650 1020 1270 1560 1920 2340 2870 3440
SDCP-CEN1023 37 10 — — 190 310 490 760 950 1170 1440 1760 2160 2610
SDCP-CEN1523 48 15 — — — 210 330 520 650 800 980 1200 1470 1780
SDCP-CEN1043
460 3
17.5 10 310 500 790 1250 1960 3050 3800 4680 5750 7050 — —
SDCP-CEN1543 26 15 — 340 540 850 1340 2090 2600 3200 3930 4810 5900 7110
SDCP-CEN2043 31 20 — — 410 650 1030 1610 2000 2470 3040 3730 4580 5530
SDCP-CEN2543 39.5 25 — — 330 530 830 1300 1620 1990 2450 3010 3700 4470
SDCP-CEN3043 47.5 30 — — 270 430 680 1070 1330 1640 2030 1490 3060 3700

ELECTRICAL INSTALLATION
Wiring Guidelines
19
Conduit Locations and Sizing
Use appropriate strain relief or conduit connectors. Close any
open conduit holes before finishing installation.
Frame 2:
1. Incoming power supply—Knockout = 1.13 in. (28.7 mm),
Knockout = 1.38 in. (35.0 mm)
2. Power output to motor—Hole = 1.73 in (44.0 mm),
Knockout = 1.98 in. (50.4 mm)
3. Control wiring (transducer/sensor) input—Hole = 0.5 in.
(12.7 mm), two Knockouts = 0.5 in. (12.7 mm). Tighten
the seal nut to 25-30 in-lbs (2.8-3.4 Nm) and locking
nut to 15-20 in-lbs (1.7-2.2 Nm).
4. Optional cabling for auxiliary controls— two Knockouts
= 0.88 in. (22.2 mm)
Frame 3:
1. Incoming power supply—Knockout = 1.37 in. (34.9 mm),
Knockout = 1.73 in. (44 mm)
2. Power output to motor—Hole = 1.98 in (50.4 mm), Knockout = 2.47 in. (62.7 mm)
3. Control wiring (transducer/sensor) input—Hole = 0.5 in. (12.7 mm), two Knockouts = 0.5 in. (12.7 mm)
Tighten the seal nut to 25-30 in-lbs (2.8-3.4 Nm) and locking nut to 15-20 in-lbs (1.7-2.2 Nm).
4. Optional cabling for auxiliary controls—two Knockouts = 0.88 in. (22.2 mm)
1
2
3
4

ELECTRICAL INSTALLATION
High Voltage Wiring Connections
20
High Voltage Wiring Connections
Incoming Power Supply
Before connecting power to drive, test incoming voltages as follows:
•230V Models: The line to line and line to ground voltage must be 190-253V (208-230V ±10%). The line
to ground voltage must be less than or equal to 253 V.
•460V Models: The line to line and line to ground voltage must be 414-506V (460V ±10%). The line to
ground voltage must be less than or equal to 506 V.
If line to line voltage exceeds these ratings, the drive cannot be used on the incoming power supply. An
additional suitably sized transformer will be required to bring the voltages within limits.
If line to ground voltage exceeds these ratings, remove Power Board EMC jumpers from J10 and J11 (four
total).
1. Incoming Power terminal block.
2. Power Out to Motor terminal block. If the drive is equipped with
an dV/dt (EMI) filter, this terminal block is pre-wired to the dV/dt
filter. The motor is wired to the terminal block on the dV/dt filter.
3. J10 Jumper location.
4. J11 Jumper location.
Ground Connections
Follow these grounding requirements to ensure safety and performance.
1. Make sure a service entrance ground rod is properly installed and connected.
2. An input power ground wire from the supply panel must be connected to the drive.
3. A dedicated output ground wire from the drive must be connected to the motor. Motor and ground
wires must be bundled together.
Contact with hazardous voltage could result in death or serious injury.
• Disconnect and lock out all power before installing or servicing equipment.
• Connect the motor, the drive, metal plumbing, and all other metal near the motor or cable to the
power supply ground terminal using wire no smaller than motor cable wires.
• Close any open conduit holes before finishing installation.
Risk of damage to drive, or malfunction can occur.
• Power source line to line, and line to ground voltages must be measured before connecting the
drive. If line to ground voltage exceeds specification, both jumpers of EMC jumpers J10 and J11 must
be removed to prevent damage to the drive. Refer to “Incoming Power Supply” on page 20.
• Ensure that the system is properly grounded all the way to the service entrance panel. Improper
grounding may result in loss of voltage surge protection and interference filtering.
12
3 4