Franklin Electric SubDrive75 User manual

SubDrive75/100/150
Constant Pressure Controller
Installation Manual
05.2010
Doc Nb.: 308 018 602; Rev.: 0

Contents
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warning notices and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2/3
Model parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Included Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
How it Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pump Sizing and Drive Conguration
SubDrive75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SubDrive100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SubDrive150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Underload Sensitivity for Deep Wells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Steady Flow Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Underload Smart Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Over Temperature Foldback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Generator Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Before Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Controller Location Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11/12
Circuit Breaker and Wire Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pressure Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15/16
Start-Up and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Specications
SubDrive 75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SubDrive 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SubDrive 150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Diagnostic Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
System Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Declaration of Conformity
Franklin Electric declares under our sole responsibility, all SubDrive/MonoDrive series 587
020 3xx0 controllers are in conformity with the Council Directives on the approximation to
the laws of the EEC member states relating to the following:
- Electromagnetic Compatibility 2004/108/EC: Adjustable Speed Electrical Power Drive
Systems: Standard EN61800-3
- Low-Voltage Electrical Safety 2006/95/EC: Safety of Household and Similar Electrical
Appliances: Standard EN60335-1
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About this document
• The instructions and information in this manual form an integral part of the equipment and describe its safe and
intended use.
• Keep this manual in the immediate vicinity of the installation.
• Hand this manual to any subsequent owner or installer.
• The instructions and specications only apply to the equipment described in this manual.
• Technical changes may be made without notice in the interest of product development.
Warning notices and
symbols Meaning
Direct/Immediate danger to life and/or health
Possible danger to life and/or health.
Important information. You should observe this information to ensure correct and safe ope-
ration. Possible danger of physical harm and/or material damage may otherwise result.
Safety
Observe the safety rules in this manual. Safety measures are listed in this section.
Intended use
• The equipment described in this manual is intended for use with a Franklin Electric submersible motor.
• A correctly sized pump must be tted to the motor.
• The pump and motor must operate under water only.
• The pumping system must fulll the applicable directives, regulations and statutory provisions.
Loss of guarantee and liability exclusion:
Franklin Electric shall not be liable for the damage resulting from any non-intended use. The risk of such use rests
solely with the user.
Target group
Any electrical system such as described in this manual must only be installed by professional staff (qualied electrical
technician).
Per EN 61800-3, the equipment described in this manual is intended for restricted distribution, to be installed by a
professional in the rst enviroment (Domestic) as Classication C2 (Fixed Installation).
Warnings notices and symbols
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Information
Danger !
Warning !

Model Name Part Number Use with Motor Series
SubDrive75 5870203380 234 714 xxxx (1.1 kW)
SubDrive100 5870204100 234 715 xxxx (1.5 kW)
SubDrive150 5870204150 234 716 xxxx (2.2 kW)
Storage, transport and disposal Storage
• Do not remove the control gear from its original packaging until the time of installation.
• Keep this manual with the control gear for future use.
• Do not store in direct sunlight or close to any heat source.
Transport
Observe temperature and humidity specications during periods of transport. (-25°C to +55°C without condensation).
Unpacking
After unpacking, check for physical damage that may impact on the safety of the control gear such as a damaged en-
closure, dislodged cable glands etc. Observe the local regulations and dispose of any packaging material accordingly.
Disposal
Observe the local regulations and dispose of any control gear accordingly. This product contains electrical and electro-
nic components and should be disposed of accordingly.
Model parameters
General safety instructions
The following safety instructions must be observed prior to putting the control gear into use:
• Mount the control gear in an appropriate location, orientation and position.
• Do not modify the control gear or its electrical or mechanical connections.
• Do not remove any part or parts of the control gear.
• Never install any control gear with a known defective motor.
• Remove power before working on control gear. Switching off the power is not sufcient.
• Make sure that nobody can switch on the power unexpectedly while work is being carried out.
• Never work on electrical systems during a thunderstorm.
• Commissioning or testing can only be performed by qualied professional staff (qualied electrical technician).
• Replace all protection and safety devices after completing work.
• Ensure that all electrical connections and safety devices have been checked and that all fuses and safety devices
have been set correctly before switching on.
• Make sure that no danger zones are accessible (e.g. electrical connections).
• Read the pump manufacturer‘s commissioning instructions before switching on any control gear.
• Repairs must only be carried out by authorized professional workshops. Use only original Franklin Electric spare
parts.
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Table: 1

SubDrive Key Features:
• Constant water pressure with a wide range of settings 1.7-5.4 bar
• Smaller pressure tank can be used
• Fits the pump to the application – pump speed is controlled to provide the optimum performance without
overloading the motor
• Flexibility – this unit can be used with standard off-the-shelf pumps
• No in-rush (power-on transient) current
• Low motor start-up current (soft-starting)
• Active Power Factor Correction minimizes input RMS current
Protection Features:
• Dry well conditions – with smart pump monitoring (see Figure 1, pg. 10)
• Bound pump – with auto-reversing torque
• High voltage / lightning surge
• Low line voltage
• Open motor circuit
• Short circuit
The Franklin Electric SubDrive is a dependable residential water system
controller that uses advanced electronics to enhance the performance
of standard submersible pumps. When used with the specied Franklin
Electric motor (see Table 1, pg. 3), the SubDrive eliminates pressure cycling
associated with conventional water well systems and owners of private
water well systems can enjoy “city-like” water pressure. Pump speed and
energy consumption automatically adjust to water demand.
In addition, the reduced tank size (see Table 4, pg. 14) allows installation in
small spaces.
Description and Features
A. Controller Unit
B. Strain Relief Fittings
C. Pressure Sensor and Boot
D. Sensor Adjustment Tool
E. Sensor Cable
F. Installation Manual
A
E
C
D
F
B
Included Items
SubDrive75/100/150
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How it Works
The Franklin Electric SubDrive is designed to be part of a system that consists of only four components:
A. Standard Pump and Franklin Electric Motor
B. SubDrive Controller
C. Small Pressure Tank (see Table 4, pg. 14)
D. Franklin Electric Pressure Sensor (provided)
Pressure
Sensor
Leads
Power Supply
from Circuit Breaker
PUMP
MOTOR
A
D
BC
Pressure
Relief Valve
Power to Motor
SubDrive controllers provide the ultimate in system performance, utilizing Franklin Electric’s three-phase motor series
for maximum starting torque, high efciency and smooth operation. SubDrives convert residential single-phase 60 Hz
power into the variable-frequency three-phase needed by the motor. In addition, SubDrives can spin a smaller pump
slightly faster to boost output to roughly double its 60 Hz horsepower rating. This allows use of smaller pumps for less
system cost. If a smaller pump of the desired ow rating is not available, the controller can be congured to use larger
pumps up to the horsepower rating of the motor.
Constant Pressure
The Franklin Electric SubDrive provides consistent pressure regulation using advanced electronics to drive a
standard motor and pump according to the pressure demands indicated by a highly accurate, heavy-duty, long-life
pressure sensor. By adjusting the motor/pump speed, the SubDrive can deliver constant pressure dependably, even
as water demand changes. For example, a small demand on the system, such as a bathroom faucet, results in
the motor/pump running at a relatively low speed. As greater demands are placed on the system, such as opening
additional faucets or using appliances, the speed increases accordingly to maintain the desired system pressure.
Motor Soft-Start
Normally, when there is a demand for water, the SubDrive/MonoDrive will be operating to accurately maintain system
pressure. Whenever the SubDrive/MonoDrive detects that water is being used, the controller always “ramps up” the
motor speed while gradually increasing voltage, resulting in a cooler motor and lower start-up current compared to
conventional water systems. In those cases where the demand for water is small, the system may cycle on and off
at low speed. Due to the controller’s soft-start feature and sensor’s robust design, this will not harm the motor or the
pressure sensor.
System Diagnostics
In addition to regulating pump pressure and accurately controlling motor operation, the SubDrive/MonoDrive
continuously monitors system performance and can detect a variety of abnormal conditions. In many cases, the
controller will compensate as needed to maintain continuous system operation. But if there is high risk of equipment
damage, the controller will protect the system and display the fault condition. If possible, the controller will try to
restart itself when the fault condition subsides.
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Pump Sizing – SubDrive75
The SubDrive75 is congured at the factory for use with 0.55 kW pumps that are mounted to 1.1 kW
Franklin Electric three-phase motors. In general, the SubDrive75 will enhance the performance of a
0.55 kw pump to a similar or better performance than a conventional 1.1 kW pump of the same ow
rating (pump series).
Drive Conguration
The SubDrive75 can also be set up to run a 0.75 kW or 1.1 kW
pump if desired, but larger pumps will still produce to the 1.1
kW curve and may only be operated with a 1.1 kW motor. To
operate a different pump size, a DIP switch must be positioned
to select the correct pump rating. Otherwise, the SubDrive75
may trigger erroneous faults.
To congure the SubDrive75 for a 0.75 kW or 1.1 kW pump,
locate the DIP switch marked “SW1”. Use a small screwdriver
(provided) to change the DIP switch setting according to the
chart as shown.
123
SubDrive
ON
12 3 4
SW1
Configuration Switch SW1
1
2
3
4
1
2
3
4
1
2
3
4
O N
O N
O N
0,55 kW
(default)
0,75 kW 1,1 kW
Serious or fatal electrical shock may result from contact with internal electrical components. DO NOT, under any
circumstances, attempt to modify DIP switch settings until power has been removed and 5 minutes have passed
for internal voltages to discharge! Power must be removed for DIP switch setting to take effect.
DANGER
To select the proper 0.55 kW pump, rst choose
a 1.1 kW curve that meets the application’s
head and ow requirements. Use the 0.55 kW
pump in the same pump series (ow rating). The
SubDrive75 will adjust the speed of this pump to
produce the performance of the 1.1 kW curve.
An EXAMPLE of this is illustrated in the graph
at right. Please consult the pump manufacturer’s
pump curve for your specic application.
EXAMPLE 1
Typical CP Water SubDrive 75 Performance
700
600
500
400
300
200
100
0 5 10 15 20 25
0.55 kW, 2,5m³ with SubDrive75
Conventional 1.1 kW, 2,5m³ Pump
Conventional 0.55 kW, 2,5m³ Pump
Total Head (m)
210
180
150
120
90
60
30
0 1,2 2,3 3,4 4,5 5,6
Flow (m³/h)
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Drive Conguration
The SubDrive100 can also be set up to run a 1.1 kW or 1.5
kW pump if desired, but larger pumps will still produce to
the 1.5 kW curve and may only be operated with a 1.5 kW
motor. To operate a different pump size, a DIP switch must
be positioned to select the correct pump rating. Otherwise,
the SubDrive100 may trigger erroneous faults.
To congure the SubDrive100 for a 1.1 kW or 1.5 kW
pump, locate the DIP switch marked “SW1”. Use a small
screwdriver (provided) to change the DIP switch setting
according to the chart as shown.
Pump Sizing – SubDrive100
The SubDrive100 is congured at the factory for use with 0.75 kW pumps that are mounted to 1.5 kW
Franklin Electric three-phase motors. In general, the SubDrive100 will enhance the performance of a
0.75 kW pump to a similar or better performance than a conventional 1.5 kW pump of the same ow
rating (pump series).
Serious or fatal electrical shock may result from contact with internal electrical components. DO NOT, under any
circumstances, attempt to modify DIP switch settings until power has been removed and 5 minutes have passed
for internal voltages to discharge! Power must be removed for DIP switch setting to take effect.
123
SubDrive
ON
12 3 4
SW1
Configuration Switch SW1
1
2
3
4
1
2
3
4
1
2
3
4
O N
O N
O N
0,75 kW
(default)
1,1 kW 1,5 kW
DANGER
To select the proper 0.75 kW pump, rst choose a
1.5 kW curve that meets the application’s head and
ow requirements. Use the 0.75 kW pump in the
same pump series (ow rating). The SubDrive100
will adjust the speed of this pump to produce the
performance of the 1.5 kW curve.An EXAMPLE
of this is illustrated in the graph at right. Please
consult the pump manufacturer’s pump curve for
your specic application.
EXAMPLE 2
Typical CP Water SubDrive100 Performance
Total Head (m)
180
150
120
90
60
30
0 2,3 6,84,5 9,0
Flow (m³/h)
0.75 kW, 5,6m³ with SubDrive100
Conventional 0,5 kW, 5,6m³ Pump
Conventional 1,1 kW, 5,6m³ Pump
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Pump Sizing – SubDrive150
The SubDrive150 is congured at the factory for use with 1.1 kW pumps that are mounted to 2.2 kW
Franklin Electric three-phase motors. In general, the SubDrive150 will enhance the performance of a
1.1 kW pump to a similar or better performance than a conventional 2.2 kW pump of the same ow
rating (pump series).
Serious or fatal electrical shock may result from contact with internal electrical components. DO NOT, under any
circumstances, attempt to modify DIP switch settings until power has been removed and 5 minutes have passed for
internal voltages to discharge! Power must be removed for DIP switch setting to take effect.
Drive Conguration
The SubDrive150 can also be set up to run a 1.5 kW
or 2.2 kW pump if desired, but larger pumps will still
produce to the 2.2 kW curve and may only be operated
with a 2.2 kW motor. To operate a different pump size,
a DIP switch must be positioned to select the correct
pump rating. Otherwise, the SubDrive150 may trigger
erroneous faults.
To congure the SubDrive150 for a 1.5 kW or 2.2 kW
pump, locate the DIP switch marked “SW1”. Use a small
screwdriver (provided) to change the DIP switch setting
according to the chart as shown.
123
SubDrive
ON
12 3 4
SW1
Configuration Switch SW1
1
2
3
4
1
2
3
4
1
2
3
4
O N
O N
O N
1,1 kW
(default)
1,5 kW 2,2 kW
DANGER
To select the proper 1.1 kW pump, rst choose
a 2.2 kW curve that meets the application’s
head and ow requirements. Use the 1.1 kW
pump in the same pump series (ow rating). The
SubDrive150 will adjust the speed of this pump
to produce the performance of the 2.2 kW curve.
An EXAMPLE of this is illustrated in the graph
at right. Please consult the pump manufacturer’s
pump curve for your specic application.
EXAMPLE 3
Typical CP Water SubDrive150 Performance
Total Head (m)
180
150
120
90
60
30
0 2,3 6,84,5 11,3
Flow (m³/h) 9,0
1,1 kW, 5,6 m³ with SubDrive150
Conventional 2,2 kW, 5,6 m³ Pump
Conventional 1,1 kW, 5,6 m³ Pump
210
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Underload Sensitivity Selection – SubDrive75/100/150
The SubDrive controller is congured at the factory to ensure
detection of Underload faults in a wide variety of pumping
applications. In rare cases (as with certain pumps in shallow
wells) this trip level may result in nuisance faults. If the pump is
installed in a shallow well, activate the controller and observe
system behavior. Once the controller begins to regulate
pressure, check operation at several ow rates to make sure
the default sensitivity does not induce nuisance Underload
trips.
If it becomes necessary to desensitize the Underload trip level,
remove power and allow the controller to discharge. Once the
internal voltages have dissipated, locate the DIP switch marked
“SW1” at the lower right corner of the main circuit board. Use a
small screwdriver (provided) to change Position 3 to the “ON”
position to select the lower Underload sensitivity as shown in
the chart below.
Serious or fatal electrical shock may result from contact with internal electrical components. DO NOT, under any
circumstances, attempt to modify DIP switch settings until power has been removed and 5 minutes have passed
for internal voltages to discharge! Power must be removed for DIP switch setting to take effect.
DANGER
Serious or fatal electrical shock may result from contact with internal electrical components. DO NOT, under any
circumstances, attempt to modify DIP switch settings until power has been removed and 5 minutes have passed
for internal voltages to discharge! Power must be removed for DIP switch setting to take effect.
DANGER
Steady Flow Selection
SubDrive75/100/150
The SubDrive/MonoDrive controller is congured at the factory to
ensure quick response to maintain constant pressure. In rare cases
(as with a water line tap before the pressure tank), the controller
may need to be adjusted to offer better control.
If the controller is used on a system that has a water line tapped
before the pressure tank and close to the well head or where
audible speed variations of the PMA can be heard through the
pipes, adjusting the pressure control response time may be
necessary. After enabling this feature, the installer should check
ow changes for possible overshoot. A larger pressure tank and/
or wider margin between regulation and valve pressure may
be required as the Steady Flow features reduce the controller’s
reaction time to sudden changes in ow.
If it is necessary to adjust the pressure control, remove power and
allow the controller to discharge. Wait 5 minutes to allow internal voltage to dissipate, locate the DIP switch marked
“SW1”. Use a small screwdriver (provided) to move position 4 to “ON” as shown.
ON
12 3 4
SW1
Configuration Switch SW1
1
2
3
4
O N
1
2
3
4
O N
Normal
(default)
Steady Flow
123
SubDrive
ON
12 3 4
SW1
Configuration
Switch SW1
1
2
3
4
O N
1
2
3
4
O N
Normal (default)
Low (shallow wells)
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Underload Smart Reset
If a motor Underload fault condition occurs, the most likely cause is
an overpumped or dry well. To allow the well to recover, the SubDrive
controller will wait 30 seconds to 5 minutes, determined by duration of
the previous run time, before restarting the motor. For example, the rst
time the fault occurs, the controller will wait 30 seconds before attempting
to restart the pump. If the system would then run for 1 minute and an
Underload fault recurs, the controller will wait 4 minutes before attempting
to restart the pump. This schedule allows for the minimum off-time possible
based on the recovery time of the well. 0 81 2 4 6 753
0
1
2
4
6
5
3
Off Time (Minutes)
Run Time (Minutes)
Figure 1: Smart Reset Well Recovery Time
Over Temperature Foldback
The SubDrive controller is designed for full power operation in ambient temperatures up to 50 °C as long as the input
voltage is kept at 230 VAC. Under extreme thermal conditions, the controller will reduce output power in an attempt to
avoid shutdown. Full pump output is restored when the controller temperature cools to a
safe level.
Before Getting Started
Generator Sizing for SubDrive/MonoDrive
Basic generator sizing for the Franklin Electric SubDrive/MonoDrive system is 1.5 times maximum input Watts
consumed by the drive, rounded up to the next normal sized generator.
Recommended minimum generator sizes:
SubDrive75 = 3500 Watts (3.5 kW)
SubDrive100 = 5700 Watts (6 kW)
SubDrive150 = 7000 Watts (7 kW)
NOTE: Not to be used on GFIC circuit Externally regulated generators Verify voltage, hertz and idle speed are
appropriate to supply drive.
Serious or fatal electrical shock may result from failure to connect the ground terminal to the motor, SubDrive/
MonoDrive controller, metal plumbing, or other metal near the motor or cable, using wire no smaller than motor
cable wires. To minimize risk of electrical shock, disconnect power before working on or around the SubDrive/
MonoDrive system. CAPACITORS INSIDE THE SUBDRIVE CONTROLLER CAN STILL HOLD LETHAL
VOLTAGE EVEN AFTER POWER HAS BEEN DISCONNECTED.
ALLOW 5 MINUTES FOR DANGEROUS INTERNAL VOLTAGE TO DISCHARGE BEFORE REMOVING
SUBDRIVE/MONODRIVE COVER.
Do not use motor in swimming areas.
This equipment should be installed by technically qualied personnel. Failure to install it in compliance with
national and local electrical codes and within Franklin Electric recommendations may result in electrical shock or
re hazard, unsatisfactory performance, or equipment failure. Installation information is available through pump
manufacturers and distributors, or directly from Franklin Electric at our toll-free number 1-800-348-2420.
Use SubDrive only with Franklin Electric 4-inch submersible motors as specied in this manual. 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.
DANGER
WARNING
INFO
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Controller Location Selection
The SubDrive controller is intended for operation in ambient temperatures up to 50 °C at 230 VAC input. The following
recommendations will help in selection of the proper location of the SubDrive unit:
1. A tank tee is recommended for mounting the tank, pressure sensor, pressure gauge, and pressure relief
valve at one junction. If a tank tee is not used, the pressure sensor should be located within 2 meters of the
pressure tank to minimize pressure uctuations. There should be no elbows between the tank and pressure
sensor.
2. The unit should be mounted on a sturdy supporting structure such as a wall or supporting post. Please take
into account the weight of the unit.
3. The electronics inside the SubDrive are air-cooled. As a result, there should be at least 16 cm of clearance on
each side and below the unit to allow room for air ow.
There should be at least 16 cm of clearance on each side and below the unit to allow room for air ow.
* NOTE: There should be no elbows between the tank and pressure sensor.
Pressure
Relief Valve
Pressure
Tank
Clearance
For
Air Flow
2m or less
(Pressure Tank to PressureSensor)*
Pressure
Sensor
PUMP
MOTOR
min.
16cm
min.
16cm
INFO
4. Do not expose a SubDrive to rain or water spray.
5. The SubDrive should only be mounted with the wiring end oriented downward. The controller should not be
placed in direct sunlight or other locations subject to extreme temperatures or humidity (mounting location
should not be subjected to freezing conditions or condensation).
Power Supply
From Circuit Breaker
Wiring
To Motor
Pressure Sensor
Wiring
Power Supply
From Circuit Breaker
Wiring
To Motor
Pressure Sensor
Wiring
CORRECT INCORRECT
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Circuit Breaker and Wire Sizing
Please observe local (national) electrical codes to determine suitable wire sizing. Below examples are based on
German Code and should only serve as recommendations:
Table A: Circuit breaker sizing and maximum input cable length (from grid to SubDrive)
Controller Model
Breaker
Amps
Nominal
Input
Voltage
Max.
Amps.
Metric Cable Size, Square Millimeters, Copper
Wire, 90°C Rated Insualtion
A V A 1,5 2,5 4 6 10 16
SubDrive 75 16 230 11 26 44 70 105 176 281
SubDrive 100 25 230 19 - 25 41 61 102 163
SubDrive 150 25 230 23 - 21 34 50 84 134
NOTE:
• Based on 3% voltage drop
• Solid copper wire cable, method of installation: xed installation on surface / in walls acc. to VDE 100
part 430 / 09.91
Table B: Maximum motor cable length (from SubDrive to motor)
Below recommendations are identical to ones found in motor literature for off the grid operation at 230V /
50Hz, cable length being limited to max. 330m.
Controller Model Franklin Electric
Motor Model
Rated Power Metric Cable Size, Square Millimeters, Copper
Wire, 70°C Rated Insulation
KW HP 1,5 2,5 4 6 10 16
SubDrive 75 234 714 xxxx 1,1 1 1/2 120 200 330 330 330 330
SubDrive 100 234 715 xxxx 1,5 2 90 150 250 330 330 330
SubDrive 150 234 716 xxxx 2,2 3 50 100 160 250 330 330
NOTE:
• Maximum lengths are measured between controller and motor
• Aluminum wires should not be used with SubDrive
6. The mounting location should have access to 230VAC electrical supply and to the submersible motor wiring. If
possible, use a dedicated circuit for the SubDrive. Specic installation precautions for variable frequency drives
should be observed:
• Standard ground fault protection relays (RCDs-Residual Current Devices) will not work with the Sub-
Drive. If their presence is required, only B-type RCDs may be used. However, extensive EMC measures
in the drive generate high frequency capacitive currents which may cause RCD nuisance tripping. Refer
to IEC 61800-5-1 Annex E for further details on RCD selection.
• Ensure good grounding of the drive. Effective overvoltage protection and EMC can only be obtained
with low-impedance grounding. Do not create ground loops.
• Keep adequate distance to other household wiring, especially low-voltage and telecom circuitry. When
it cannot be avoided, cross such circuits at right angles and maximum possible distance to minimize
interference.
Standard RCD’s used upstream of SubDrive may fail to offer protection because of the presence of smooth DC
residual currents that can saturate their cores.
DANGER
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12
Black Red
L2
From Power Source
L1
(Input)
ON
1234
SW1
L2
Sensor
Connection
Output to Motor
Configuration Switch
See Pump Sizing section under the appropriate controller model for proper configuration setting.
Blk Brw Gry
(Output)
Mounting Screw Location
Mounting Screw Location
Motor Cable*
Power Supply from Circuit Breaker*
Mounting Screw Location
Franklin Electric Motor
Pump
(Discharge into drain
rated for max pump
output at relief pressure)
Pressure Gauge
Pressure
Sensor
Pressure Relief Valve Drain Valve
(To Residence)
Tank Precharge Inflation Valve
Pressure Tank
See Table 4 (on Page 14)
for recommended
minimum tank size.
SubDrive75/100/150 Controller
Pressure
Sensor Cable
(included)
* Note: To avoid possible interference with other appliances, please refer to the Installation Guide and observe all precautions regarding power cable routing.
Submersible pumps can develop very high pressure in some situations. Always install a pressure relief valve able to pass full pump flow at 6.8 bar. Install the pressure relief valve near the pressure tank.
DANGER
The tank and pressure sensor should remain on same elevation within 2 m to prevent over pressure of tank.
The Safety earth ground connections are marked at their terminals using the “ ” symbol.
INFO INFO
Quick Reference Guide to Controller Installation SubDrive75/100/150
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Pressure Tank
The SubDrive needs only a small pressure tank to maintain constant pressure. (See table below for recommended
tank size.) For pumps rated 2,5 m³/h or more, a slightly larger tank is recommended for optimum pressure regulation.
The SubDrive can also use an existing tank with a much larger capacity.
The minimum supply pipe diameter should be selected not to exceed a maximum velocity of 2,4 m/s (See
Table 6 below for minimum pipe diameter). The pressure tank pre-charge setting should be 70% of the
system pressure sensor setting as indicated in the following table.
Table 4: Minimum Pressure Tank Size (Total Capacity)
Maximum Velocity 2.4 m/s
min. Pipe Dia
(inches) max. m³/h
1/2" 1,2
3/4" 2,4
1" 4,5
1-1/4" 6,8
1-1/2" 10
2" 17
2-1/2" 40
Table 6: Minimum Pipe Diameter
Pump Flow Rating Controller Model Minimum Tank Size
Less than 2,5 m³/h
SubDrive75 8 liters
SubDrive100 18 liters
SubDrive150 18 liters
2,5 m³/h and higher
SubDrive75 18 liters
SubDrive100 30 liters
SubDrive150 30 liters
Table 5: Pressure Tank Pre-charge bar
System Pressure (bar)
(at Pressure Sensor)
Pressure Tank
Setting (bar)
1,7 1,2
2 1,4
2,4 1,7
2,7 1,9
3 2,1
3,4 Factory Setting 2,3
3,7 2,7
4 2,8
4,4 3
4,7 3,3
5 3,7
Installation Procedure
1. Disconnect electrical power at the main breaker.
2. Drain the system (if applicable).
3. Install the pressure sensor at the pressure tank tee downstream of the
pressure tank. (The pressure tank should be between the pressure sensor
and the pump.) The pressure sensor has a 1/4-18 National Pipe Thread
(NPT) connection. The pressure sensor should not be installed in an inverted
orientation (upside down). Make sure the pressure sensor and tank are not
located more than 1m off the main piping.
4. Install the unit to the wall using adequate mounting screws (not included) as
shown in Figure 2. The top mounting holes are slotted in order to hang the
drive in place, while the bottom fasteners are inserted to secure the unit from
ever sliding up.
5. Remove the SubDrive lid as shown in Figure 2.
Lid Screws, (Quantity 2) Required
For Shipping; May Be Discarded
If Desired Mounting Screw Locations
(User Supplied, Quantity 3)
Lid Screw (Required)
Figure 2: Shipping / Mounting / Lid Screws
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Wiring Connections
Serious or fatal electrical shock may result from failure to connect the motor, the SubDrive, 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. To reduce risk of electrical shock, disconnect power before working on or around the water system.
Do not use motor in swimming areas.
1. Verify that the power has been shut off at the main
breaker.
2. Verify that the dedicated branch circuit for the SubDrive is
equipped with a properly-sized circuit breaker.
3. Use appropriate strain relief or conduit connectors.
4. Remove the SubDrive lid.
5. Feed the motor leads through the opening on the bottom
right side of the unit and connect them to the terminal block positions marked GND (Green/Yellow Ground
Wire), Black, Brown, Grey (Figure 3).
Output to Motor
Blk Brw Gry
(Output)
Figure 3: Motor Lead Connections
For retrot application , make sure to check integrity of power and motor leads.
This requires measuring the insulation resistance with the suitable megohmmeter.
WARNING
DANGER
Figure 4:
Power and Pressure Sensor
Connections
8. Verify that the SubDrive unit is properly congured for the horsepower rating of the motor and pump being used.
(See the section on Pump Sizing for information on Drive Conguration pg. 6- 8.)
9. Replace the cover. Do not over-tighten the screw.
Power Leads
12
Pressure Sensor
Leads
Black
Red
L2
From Power Source
L1
(Input)
L2
Sensor
Connection
6. Feed the 230 VAC power leads through the larger opening on the bottom left side of
the SubDrive controller and connect them to the terminals marked L1, GND, and L2
(Figure 4).
7. Use the smaller opening on the bottom left side of the SubDrive unit and connect
the red and black leads to the terminals marked “1” and “2” (interchangeable) with a
small screwdriver (provided).
Note: A 3 m section of pressure sensor cable is provided with the controller, but it
is possible to use similar 0,33 mm² wire for distances up to 30 m from the pressure
sensor. A 30 m section of pressure sensor cable is available from your local Franklin
Electric distributor. (See Accessories)
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Pressure
Sensor
Boot
Remove Rubber End Cap To Adjust Pressure
With 7/32" Allen Wrench (provided)
Figure 5A: Pressure Sensor
12. The pressure sensor communicates the system pressure to the SubDrive controller. The sensor is preset at
the factory to 3.4 bar, but can be adjusted by the installer using the following procedure:
a. Remove the rubber end-cap (Figure 5A).
b. Using a 7/32" Allen-wrench (provided), turn the adjusting screw clockwise to increase pressure and
counter-clockwise to decrease pressure. The adjustment range is between 1.7 and 5.5 bar (1/4 turn =
approximately 0.2 bar)).
c. Replace the rubber end cap.
d. Cover the pressure sensor terminals with the rubber boot provided (Figure 5A).
10. Connect the other end of the pressure sensor cable with the
two spade terminals to the pressure sensor. The connections
are interchangeable (Figure 5A).
11. Set the pressure tank pre-charge at 70% of the desired water
pressure setting. To check the tank’s pre-charge, de-pressurize
the water system by opening a tap. Measure the tank pre-
charge with a pressure gauge at its ination valve and make
the necessary adjustments.
NOTE: Ensure that the system is properly grounded all the way to the service entrance panel. Improper grounding
may result in the loss of voltage surge protection and interference ltering.
When increasing the pressure, do not exceed the mechanical stop on the pressure sensor or 5.5 bar. The
pressure sensor may be damaged.
INFO
Start-Up and Operation
Apply power to the controller. A steady green light indicates that the SubDrive has power but the pump is not running.
The green light will ash continuously when the pump is running.
Leaky Systems
Leaky water systems might keep the controller running due to the accurate pressure sensing capability of the pressure
sensor. Continuous running or starts and stops do not hurt the controller, pump or motor. However, to reduce the on-
time of the controller/pump/motor, a “Bump-Mode” procedure is installed. During low ow (or leaky) conditions, this
feature periodically increases the system pressure slightly above the set point and shuts off the pump. This adds some
time to bleed off before the system starts up again.
NOTE:
Conventional private water systems intermittently ll a pressure tank as commanded by a standard pressure switch
2 - 3.4 bar. The SubDrive maintains a constant pressure at the pressure sensor up to the maximum capability of the
motor and pump.
Although the pressure is constant at the pressure sensor, pressure drops may be noticeable in other areas of the
home when additional taps are opened. This is due to restrictions in the plumbing and will be more pronounced
the farther the taps are from the pressure sensor. This would be true of any system, and if observed, should not be
interpreted as a failure in the performance of the SubDrive.
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Specications – SubDrive75
Input from
Power Source
(single-phase)
Voltage
190-260 VAC
Frequency 60/50 Hz
Current (max)
11 Amps (RMS)
Power Factor 1.0 (constant)
Power (idle) 35 Watts
Power (max) 2400 Watts
Output to Motor
(three-phase)
Voltage Adjusts with Frequency
Frequency Range
0.55 kW pump 30 - Hz
0.75 kW pump 30 - Hz
1.1 kW pump 30 - Hz
Current (max) 5.9 Amps (RMS, each phase)
Pressure Setting
Factory Preset 3.4 bar
Adjustment Range 1.7 and 5.5 bar
Operating
Conditions
(A)
Drive IP10
Pressure sensor IP24
Temperature (at 230 VAC input) -25 to 50 oC
Relative Humidity
10-95%, non-condensing
Controller Size
(B)
(approximate) indoor IP10 42 x 32 x 23 cm
6.80 kg
For Use With
(C)
Pump (50 Hz)
0.55 kW (default)
0.75 kW
1.1 kW
Motor (three-phase) 234514 - series 1.1 kW
Specications – SubDrive100
Input from
Power Source
(single-phase)
Voltage
190-260 VAC
Frequency 60/50 Hz
Current (max)
19 Amps (RMS)
Power Factor 1.0 (constant)
Power (idle) 65 Watts
Power (max) 3800 Watts
Output to Motor
(three-phase)
Voltage Adjusts with Frequency
Frequency Range
0.75 kW pump 30 - Hz
1.1 kW pump 30 - Hz
1.5 kW pump 30 - Hz
Current (max) 8.1 Amps (RMS, each phase)
Pressure Setting
Factory Preset 3.4 bar
Adjustment Range 1.7 -5.5 bar
Operating
Conditions
(A)
Drive IP10
Pressure sensor IP24
Temperature (at 230 VAC input) -25 to 50 oC
Relative Humidity
10-95%, non-condensing
Controller Size
(B)
(approximate) indoor IP10 42 x 32 x 23 cm
8 kg
For Use With
(C)
Pump (50 Hz)
0.75 kW (default)
1.1 kW
1.5 kW
Motor (three-phase) 234315 - series (1.5 kW)
A. Operating temperature is specied at full output power when installed as described in Controller Location
Selection on pg. 11.
B. Refer to pg. 18 for detailed Mounting Dimensions.
C. If a pump other than the default rating is used, refer to pg. 6/7 for Drive Conguration.
Notes:
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Specications – SubDrive150
Input from
Power Source
(single-phase)
Voltage
190-260 VAC
Frequency 60/50 Hz
Current (max)
23 Amps (RMS)
Power Factor 1.0 (constant)
Power (idle) 65 Watts
Power (max) 4600 Watts
Output to Motor
(three-phase)
Voltage Adjusts with Frequency
Frequency Range
1.1 kW pump 30 - Hz
1.5 kW pump 30 - Hz
2.2 kW pump 30 - Hz
Current (max) 10.9 Amps (RMS, each phase)
Pressure Setting
Factory Preset 3.4 bar
Adjustment Range 1.7 -5.5 bar
Operating
Conditions
(A)
Drive IP10
Pressure sensor IP24
Temperature (at 230 VAC input) -25 to 50 oC
Relative Humidity
10-95%, non-condensing
Controller Size
(B)
(approximate)
indoor IP10
42 x 32 x 23 cm
7.94 kg
For Use With
(C)
Pump (50 Hz)
1.1 kW (default)
1.5 kW
2.2 kW
Motor (three-phase) 234316 - series (2.2 kW)
A. Operating temperature is specied at full output power when installed as described in Controller Location
Selection on pg. 11.
B. Refer to pg. 18 for detailed Mounting Dimensions.
C. If a pump other than the default rating is used, refer to pg. 8 for Drive Conguration.
Notes:
A
F
E
C
D
B
G
H
Mounting Dimensions
SubDrive75/100/150:
A B C D E F G H
Dimension (cm) 13.4 29.2 14 24.8 32.5 35.6 2.9 1.3
Conduit Sizes - - - - - - 1.9 -
* Use knock-outs as required.
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