SJE RHOMBUS RD150 Constant Pressure Control Panel for Submersible Well Pumps User Manual

RD150 Constant Pressure Control Panel for Submersible Well Pumps

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Specifications

Model Options: RD150 / RD300 / RD500 /
RD750

Input Voltage: 230V, 1 phase (RD150, RD300,
RD500), 230V, 3 phase (RD500, RD750)

Motor Options: 1.5HP, 3.0HP, 5.0HP, 7.5HP

Enclosure Dimensions: RD150 & RD300:
14x12x6, RD500 & RD750: 18x16x10

Weight: RD150 & RD300: 16.4 lbs, RD500
& RD750: 28.7 lbs

Product Usage Instructions

System Overview

The Constant Pressure Control Panel is designed to operate one
well pump in a pressure control application. It automatically
controls the pump’s operation and speed based on the signal from
the pressure transducer.

Pump Control and Protection System

The system includes a pressure tank, pressure transducer,
pressure relief valve, well pump, and optional components like
float switch and floor sensor.

Electrical Specifications

The controller is available in different HP options (1.5HP,
3.0HP, 5.0HP, 7.5HP) with specific amp ratings. Make sure to match
the input voltage and motor HP when selecting the model.

Installation Steps

1. Determine the voltage available on site.

2. Select a pump with the corresponding voltage (motor must be 3
   phase).

3. Check the pump motor nameplate Service Factor Amps (SFA) for
   proper VFD sizing.

4. Select a VFD with an output amps rating greater or equal to
   motor SFA.

5. Oversize the motor and VFD for operation over 60Hz. Consult the
   pump manufacturer for sizing.

FAQ

Q: What should I do if I encounter a warning message on the

control panel?

A: If you see a warning message, refer to the
manual for troubleshooting steps. Contact technical support if the
issue persists.

Q: Can I use the control panel with a single-phase motor for

all model options?

A: The RD150, RD300, and RD500 models support a
single-phase motor, while the RD500 and RD750 models require a
three-phase motor.

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H2O Drive®
Constant Pressure Control Panel
For Submersible Well Pumps User Manual
RD150 / RD300 / RD500 / RD750
RUN FWD
57.4 psi
HAND OFF AUTO 37.4 Hz 3.74 A
Technical support: +1-800-746-6287 techsupport@sjeinc.com www.sjerhombus.com
Technical Support Hours: Monday-Friday, 7 A.M. to 6 P.M. Central Time

TABLE OF CONTENTS
WARNINGS………………………………………………………………………………….. 1
INCLUDED IN THE H2O DRIVE® PANEL PACKAGE ………………. 2
SYSTEM OVERVIEW………………………………………………………………….. 3 INTRODUCTIONS & SPECIFICATIONS……………………………………… 4 SELECTING THE CORRECT VFD ……………………………………………… 5 HYDROPNEUMATIC TANK ………………………………………………………… 5 MINIMUM CAPACITY OF PRESSURE TANK …………………………….. 5 INITIAL PRESSURE TANK CHARGE PRESSURE …………………….. 6
H2O DRIVE® PANEL INSTALLATION & MOUNTING ……………….. 6
DIMENSIONS ……………………………………………………………………………….7 ELECTRICAL CONNECTIONS DIAGRAM …………………………………….. 8 TERMINAL CONNECTIONS ……………………………………………………….. 9 SURGE PROTECTIVE DEVICE (SPD)………………………………………… 9 MOTOR CABLE LENGTHS ………………………………………………………… 9 PROGRAMMING …………………………………………………………………………10 PARAMETER DESCRIPTIONS …………………………………………………..13 TUNING & TROUBLESHOOTING GUIDE…………………………………..17 ERROR MESSAGES …………………………………………………………………..18 SCHEMATICS …………………………………………………………………………….19

SJE Rhombus®

H2O Drive® Panel Operation Manual

WARNINGS
Failure to read and understand the information provided in this manual may result in personal injury or death, damage to the product or product failure. Please read each section in its entirety and be sure you understand the information provided in the section and related sections before attempting any of the procedures or operations given.
Failure to follow these precautions could result in serious injury or death. Keep these instructions with warranty after installation. This product must be installed in accordance with National Electrical Code, ANSI/NFPA 70 so as to prevent moisture from entering or accumulating within the controller housing. See additional specifications on page 3 of this manual.
ELECTRICAL SHOCK HAZARD Disconnect power to the H2O Drive® Panel and wait 10 minutes before removing any cover. A qualified service person must install and service this product according to applicable codes and electrical schematics.
· Lethal voltages are still present inside the H2O Drive® Panel after power is disconnected. Wait 10 minutes to allow internal capacitors to fully discharge before attempting to connect or disconnect wiring or to service this equipment.
· Do not connect incoming power to motor terminals U, V, W. Doing so will result in irreversible damage to the drive.
· Do not connect power to this equipment if it has been damaged or has any missing parts.
· Verify that the incoming voltage supply matches the H2O Drive® Panel rating before applying power to the unit.
· The H2O Drive® Panel contains no serviceable parts, do not attempt to repair this equipment.
· The H2O Drive® Panel must be grounded at the grounding terminal according to N.E.C. Refer to the electrical connections page.
· Do not install in areas with: excessive or conductive dust, corrosive or flammable gas, excessive heat, regular impact shocks or excessive vibration.
· Do not install in areas where ambient temperature exceeds 40ºC (104ºF).
EXPLOSION OR FIRE HAZARD Do not use this product with flammable liquids. Do not install in hazardous locations as defined by National Electrical Code, ANSI/NFPA 70.

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H2O Drive® Panel Operation Manual

INCLUDED IN THE H2O DRIVE® PANEL PACKAGE
1. H2O DRIVE® Panel VFD controller (RD150, RD300, RD500 or RD750)
2. Pressure transducer (0-150 PSI range) 4-20mA output signal 3. Pressure transducer cable (5m ­ 16.4 ft) 4. Strain reliefs (x3) 5. User manual
Verify that all components are included and the H2O Drive® Panel model number is correct.

1
RUN FWD
57.4 psi
HAND OFF AUTO 37.4 Hz 3.74 A

3 2

5 4

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H2O Drive® Panel Operation Manual

SYSTEM OVERVIEW
RD150, RD300, RD500 and RD750

Pressure Tank

Pressure Transducer

Pressure Relief Valve
ATTENTION!
A pressure relief valve is recommended.

H2O Drive®

Well Pump

Float Switch (Optional)

230V, 3 phase Motor

Incoming Power

230V, Single Phase (RD150, RD300, RD500)

230V, Three Phase (RD500, RD750)

Floor Sensor (Optional)

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H2O Drive® Panel Operation Manual

INTRODUCTION & SPECIFICATIONS
Congratulations and thank you for your purchase of the H2O Drive® control panel. This manual
explains the features and operations of the controller which was designed to operate one well pump in a pressure control application. The controller automatically controls the operation and speed of the pump based on the signal from the pressure transducer.
GENERAL
· One Variable Frequency Drive well pump pressure controller · Operates using a 0-150 PSI pressure transducer (4-20mA) · HMI – Rotary selector for menu navigation and editing settings · HMI – High-Brightness 2.4″ color graphic LCD display, 240X320 pixel resolution
PUMP CONTROL AND PROTECTION
· Pump run indication · Pump speed (Hz) and Amps (A) indication · Pump motor overload protection · High- and low-pressure alarms · Pump dry run alarm and well recharge timer · Floor water sensor and low level switch alarm/shutdown
SYSTEM
· Pump run time
ELECTRICAL SPECIFICATIONS
· Input voltage: 240V nominal – 200-240V 50Hz/60Hz, single phase for RD150 & RD300 – 200-240V 50Hz/60Hz, three phase/single phase for RD500 – 200-240V 50Hz/60Hz, three phase for RD750
· Output 0-240V, three phase, 0-60Hz capable of operating up to 80Hz Note: The output voltage cannot exceed the input voltage.
DEDICATED I/Os
· Pressure transducer input, 4-20mA, two wire · 2 Auxiliary alarm inputs (Low level, Floor water sensor) Dry contact only · 1 alarm relay output (N.O). 230V, 0.3A Max
ENVIRONMENT
· Surrounding air temperature: 14°F to 104°F (-10°C to 40°C) · Panel internal temperature: 14°F to 122°F (-10°C to 50°C) · Storage temperature -4°F to 131°F (-20°C to 55°C) · Altitude: Maximum of 3280 ft (1000m) above sea level · Outdoor rated enclosure (UL Type 3R)

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H2O Drive® Panel Operation Manual

PART

RATED S.F.

NUMBER MODEL DESCRIPTION AMPS¹ AMPS²

HP

1076917 RD150 H2O DRIVE – 1.5HP 7.0A 7.3A 0.5/0.75/1.0/1.5

INPUT 230V, 1PHASE

OUTPUT

ENCLOSURE SHIPPING DIMENSION WEIGHT

230V, 3PHASE 14X12X6 16.4 lbs

1076918 RD300 H2O DRIVE – 3.0HP 10.0A 10.9A

2.0/3.0

230V, 1PHASE 230V, 3PHASE 14X12X6 17.4 lbs

1076919 RD500 H2O DRIVE – 5.0HP 15.9A 17.8A

5.0

230V, 1 or 3PHASE³ 230V, 3PHASE 18X16X10 32.7 lbs

1077249 RD750 H2O DRIVE – 7.5HP 31.8A 31.8A

7.5

230V, 3PHASE 230V, 3PHASE 18X16X10 28.7 lbs

¹ VFD rated Amps. 150% OL for 60 sec., 200% for 0.5 sec (Constant torque – UL listed) ² VFD Amps for pumps: 120% for 60 sec. (Variable Torque) ³ VFD UL rated for 3 phase input

SELECTING THE CORRECT VFD
1. Determine the voltage available on site. 2. Select a pump with the same voltage (motor must be 3 phase). 3. Check pump motor nameplate Service Factor Amps (SFA) for proper VFD sizing. 4. Select a VFD with an output amps rating greater or equal to motor SFA. 5. The motor and VFD must be oversized for operation >60Hz. Consult the pump MFR for sizing.

HYDROPNEUMATIC TANK
To maintain constant pressure and prevent rapid cycling, a hydropneumatic tank (pressure tank) is needed in the system (refer to the minimum capacity of pressure tank table below). The
H2O Drive® Panel may use a pressure tank of a larger capacity than listed in the table.

MINIMUM CAPACITY OF PRESSURE TANK

Flow Rate < 12.0 GPM > 12.0 GPM

Model RD150 RD300 RD150 RD300

Min. Tank Volume 2 Gallons 4 Gallons 4 Gallons 8 Gallons

For 5HP & 7.5HP, the minimum tank size should be >20% of the rated flow. For example, a pump designed to deliver up to 100 GPM would require a minimum tank size of 20 gallons.

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H2O Drive® Panel Operation Manual

INITIAL PRESSURE TANK CHARGE PRESSURE

Set Pressure 40 PSI 45 PSI 50 PSI 55 PSI 60 PSI 65 PSI 70 PSI 75 PSI

Pre-charge Pressure 28 PSI 32 PSI 35 PSI 39 PSI 42 PSI 46 PSI 49 PSI 53 PSI

1. Initial charge pressure should be at least 70% of the system pressure. 2. To maintain the optimum pressure level, check the air pressure in the tank regularly. 3. Pre-charge pressure must be set when the tank is empty and vented.

H2O DRIVE® PANEL INSTALLATION & MOUNTING

1. The H2O Drive® Panel is designed for outdoor installations.
2. The control panel can be wall or post mounted. 3. Mount vertically using four (4) screws. 4. Avoid locations with direct sunlight exposure. 5. Locate near the well head, keeping the motor cable as short as possible. 6. Liquid tight conduits required for outdoor installations.

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H2O Drive® Panel Operation Manual

RD150 & RD300 DIMENSIONS
16.36″ 15.59″

9.25″ 14.20″

7.80″

RD500 & RD750 DIMENSIONS

18.00″

14.02″

11.07″

20.18″ 19.37″

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H2O Drive® Panel Operation Manual

Electrical Connections Diagram
RD150 & RD300

BRN BLU RED YEL BLK

230VAC, 60Hz (200-240VAC) SINGLE PHASE INCOMING POWER

Pump Cable

Pressure Transducer 0-150 PSI

Well Pump 230 VAC. 3 Phase

Electrical Connections Diagram

RD500 & RD750

BRN BLU RED YEL BLK

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Pressure Transducer 0-150 PSI

230VAC, 60Hz (200-240VAC) THREE PHASE INCOMING POWER
(CONNECT L1 & L2 ONLY FOR SINGLE PHASE INCOMING POWER – RD500 ONLY)

Pump Cable

Well Pump 230 VAC. 3 Phase

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H2O Drive® Panel Operation Manual

TERMINAL CONNECTIONS

Symbol BN BU CM, S1 CM, S2 RC, RA L1, L2 L1, L2, L3 G U, V, W

Function (BROWN) 24 VDC Pressure Transducer power (BLUE) 4-20mA signal from Pressure Transducer CM = Signal Common. S1 = Floor Sensor Input (Dry Contact Only) CM = Signal Common. S2 = Low Water Input (Dry Contact Only) Alarm Relay Output. 230VAC 0.3A max, 30VDC 0.3A max Incoming Power (RD150, RD300) Incoming Power (RD500, RD750) Motor Ground Pump Motor Connection

SURGE PROTECTIVE DEVICE (SPD)
A Surge Protective Device (SPD/lightning arrestor) will reduce problems resulting from power surges and lightning; however, 100% protection is not achievable. The SPD must be connected to the input
power terminals. Do not connect the SPD to the pump motor output terminals of the H2O Drive® Panel.
MOTOR CABLE
MAXIMUM MOTOR CABLE LENGTHS
Cable type: 4 conductor (3W + GND) shielded cable is recommended for optimum operation and noise suppression. Unshielded cable can be used if ran in metal conduit. Do not use flat cable. Do not use 3 separate/untwisted conductors. Do not use cables without a ground conductor. Motor Cable sizing: Select the motor cable from the table below.

MODEL RD150

Motor

HP

SFA²

1/2HP

2.9A

3/4HP

3.9A

1.0HP

4.7A

1.5HP

6.1A

Incoming Power

AWG

CB

14

15A

14

15A

12

15A

12

25A

Motor Cable Length (75C)¹ (Feet)

14 AWG 12 AWG 10AWG 8AWG

800

650

550

410

650

RD300

2.0HP 3.0HP

8.1A 10.1A

10 10

25A

320

500

800

30A

240

380

600

RD500 5.0HP 17.5A

6

RD750 7.5HP 26.4A

6

50A

140

230

350

550

60A³

150

250

400

¹Cable length is measured from H2O Drive® Panel to the motor.
²Data is based on 230V motor, 3 phase operating at 60Hz Max. Check motor name plate. ³Requires 3 phase input power and 3-pole Circuit Breaker (MCCB). For cable lengths greater than 800 ft., please contact factory. Do not use flat cable. Use round cable with twisted conductors (3 wire + ground). 75C Insulation – AWG Copper Wire only. Do not use aluminum conductors. Use shielded cable or run cable in metal conduit to reduce Radio Frequency Interference (RFI). The motor must only be grounded in the control panel. Do not also ground at the well head or disconnect.

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H2O Drive® Panel Operation Manual

PROGRAMMING
HMI MAIN SCREEN
The main screen shows an overview of the system status including any active alarms.

Run Status

RUN FWD
57.4 psi

Menu
Password Protection Indicator
System Pressure

Output Frequency Output Amps

HAND OFF AUTO
37.4 Hz 3.74 A

USER INTERFACE
Color Liquid Crystal Display (LCD)

Hand/Off/Auto Selection

Menu Navigation And ENTER Dial
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H2O Drive® Panel Operation Manual

MAIN MENU
RUN FWD
57.4 psi

RUN FWD
57.4 psi

HAND OFF AUTO
37.4 Hz 3.74 A

ROTATE

Pressure Setting Used to set the desired system pressure.
Motor S.F. Amps Used to set the service factor amps of the pump motor.
Motor Run Time View the accumulated run time of the pump.
Alarm History View the history of the last 10 stored faults.
I/O Status View the status of the H2O Drive’s analog input, digital inputs, and alarm relay output.
VFD Status View the H2O Drive’s status. This includes output voltage, output current, output frequency, output power, and DC bus voltage.
HMI Setup Used to configure the display’s color theme, as well as set up the password protection.
Advanced Used to set advanced functions.

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HAND OFF AUTO 37.4 Hz 3.74 A
PRESS – ENTER
Main Menu
H2O Drive® Panel Operation Manual

Setting
Enter Password Pressure Setting
Motor S.F. Amps
HMI Setup Menu Color Theme Password Setup
Advanced Menu Start Pressure Diff. High Pressure Alarm Low Pressure Alarm Low Pressure Delay Time Dry Run Amps Dry Run Delay Time Dry Run Reset Mode Dry Run Recharge Time Motor Voltage
Sleep Frequency Sleep Time Min. Frequency Max. Frequency
Accel Decel PID – Proportional PID – Integral Transducer Range Transducer Offset HAND Run Time
HAND Speed Carrier Frequency Motor Auto-Tune

Min.
00-00 0
1.80
2.50
8.00
8.00

Max.
99-99 Transducer Range
7.50
11.00
17.80
31.80

Units
PSI

Default
00-00 60 5.90

10.90 A
17.80

26.40

Description
Only displays if a password is required.
Enter the target pressure to maintain
RD150 default set for: 1.5HP, 230V, 60Hz, 5.9 SFA
RD300 default set for: 3.0HP, 230V, 60Hz, 10.9 SFA
RD500 default set for: 5.0HP, 230V, 60Hz, 17.8 SFA
RD750 default set for: 7.5HP, 230V, 60Hz, 26.4 SFA

Blue/Dark, Green/Dark

00-00

99-99

Green/Dark 00-00

The color palette used for the display.
Will not display if the user has not yet entered the correct password. 00-00 will disable password protection.

0
0
0 0 0.00 0 Auto-Reset 0.1 200.0
0.00
0.0
20.00
35.00
0.0 0.0 0.1% 0.1
1 -10.0
0
30.00 0.7 –

Set Pressure -1
Transducer Range
Set Pressure -1 999
Motor S.F. Amps 999
Manual-Reset 9.9
240.0
Max Frequency
3600.0
Max Frequency
80.00
300.0 300.0 500.0% 100.0 300 10.0
999
Max. Frequency 10 –

PSI

5

Pressure drop before starting the pump (Wake

up).

PSI

80

Will automatically be set 20 PSI above

Pressure Setting during Quick Start.

PSI

15

sec

30

A

0.00

0.00A = Dry Run Disabled

sec

20

Auto-Reset

hr

1.0

V

230.0

Motor nameplate Voltage. Cannot be greater

than the measured incoming voltage to the

control panel.

Hz

35.00

Frequency at low flow. Timer will start when

Hz < Sleep Hz.

sec

10.0

Delay before stopping the pump in sleep mode

(no flow).

Hz

30.00

Lowest Hz the pump is allowed to Run before

Stopping in sleep mode.

Hz

60.00

Highest Hz the pump is allowed to Run when

Pressure < Set Pressure. Do not set >60Hz

without consulting with the pump manufac-

turer and sizing the motor/VFD correctly.

sec

2.0

Acceleration rate (time from 0Hz to 60Hz).

sec

2.0

Deceleration rate (time from 60Hz to 0Hz).

%

35.0%

Expert users only.

sec

1.0

Expert users only.

PSI

150

Match the pressure transducer range.

PSI

0.0

Used to adjust the pressure transducer read-

ing higher or lower.

min

5

The timer will stop the pump when

operating in Manual. 0 = no timeout

(Continuously Run at Manual Hz)

Hz

45.00

kHz

2

–

–

Automatically measures and sets motor

parameters for the most efficient operation.

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PARAMETER DESCRIPTIONS
BASIC SETTINGS
· Enter Password If password protection has been enabled in the Password Setup menu, the user must enter the correct password to be allowed to change any settings. Once entered correctly, the settings are “unlocked” and may be edited. After no inputs from the user for 5 minutes, these settings will become “locked” until the correct password is entered once again.
· Pressure Setting Pressure Setting is the target pressure to be maintained at the pump discharge. It cannot exceed the maximum range of the pressure transducer.
· Motor S.F. Amps The VFD’s electronic overload will signal an overload fault and protect the motor from damage in the event of an overload condition. Set the Motor S.F. Amps setting to the motor nameplate Service Factor Amps (SFA) for submersible pumps.
HMI SETUP
· Color Theme This adjusts the colors used in the HMI display screens.
· Password Setup When a password is set up, the user will only be able to view settings on the HMI but cannot change them, unless they first enter the correct password in the Enter Password menu. Set Password Setup to any 4-digit password 00-01 through 99-99 to enable this password protection. Be sure this is a password you will remember, or write the password down in a secure location for your future reference. Set Password Setup to 00-00 to disable password protection. Note: When password protection is enabled, this setting will not be accessible until the user enters the correct password in the Enter Password setting.
ADVANCED SETTINGS
· Start Pressure Diff. The Start Pressure Diff. is the amount of pressure drop from the Pressure Setting, at which the VFD will wake from sleep and run to maintain the system pressure. The pump will start if the pressure drops below the Pressure Setting minus the Start Pressure Diff. Example: If the Pressure Setting is 40 PSI and the Start Pressure Diff. is 5 PSI, the pump will start when the pressure drops below 35 PSI.
· High Pressure Alarm Set the High Pressure Alarm setting to the pressure at which the VFD output will shut off due to high system pressure. There is a 2 second delay before the VFD will activate the High Pressure Alarm. If system pressure drops below the High Pressure alarm setting for 10 seconds, the high pressure alarm will automatically reset and normal operation of the VFD will resume.
· Low Pressure Alarm The Low Pressure Alarm will activate when both of the following conditions persist for the amount of time defined in Low Pressure Delay Time: 1) The pump is running at Max. Frequency. 2) The measured pressure is below the Low Pressure Alarm setting. This alarm will stop the pump, and must be manually reset. Set Low Pressure Alarm to “0” to disable the alarm.

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· Low Pressure Delay Time Delay before stopping the pump on Low Pressure Alarm (default 20 sec).
· Dry Run Amps The Dry Run Amps alarm will activate when all three of the following conditions persist for the amount of time defined in Dry Run Delay Time: 1) The pump is running at Max. Frequency. 2) The measured pressure is below the Pressure setting. 3) The pump current is below the Dry Run Amps setting. This alarm will stop the pump, and can be reset manually or automatically, depending on the Dry Run Reset Mode setting. While the above three conditions are true, a Dry Run warning will display on screen showing a timer counting down to the Dry Run Alarm trip. Set Dry Run Amps to 0.00 to disable Dry Run detection.
· Dry Run Delay Time Delay before stopping the pump on a Dry Run Alarm.
· Dry Run Reset Mode If Dry Run Reset Mode is set to Auto Reset, once a Dry Run Alarm is active, a countdown timer will begin according to the Dry Run Recharge Time setting. After that timer reaches zero, the Dry Run alarm will be cleared, and the pump will be allowed to run again. If Dry Run Reset Mode is set to Manual Reset, then the user must reset a Dry Run Alarm manually through the main screen.
· Dry Run Recharge Time Delay before automatically re-starting the pump after a Dry Run Alarm.
· Motor Voltage Set the Motor Voltage setting to the voltage rating found on the motor nameplate. This value must not exceed the voltage of the incoming power.
· Sleep Frequency Set the Sleep Frequency to the frequency at which the pump no longer builds pressure when operating at or near the Set Pressure. The VFD will enter the “sleep” mode when the output frequency of the VFD drops below the Sleep Frequency for a period of time (Sleep Time).
· Sleep Time Set the Sleep Time to the amount of time that the VFD will wait before entering “Sleep”mode after the output frequency drops below the Sleep Frequency. Note: If the system cycles on and off too frequently, try the following: increase the Sleep Time, lower the Sleep Frequency, or increase the Start Pressure Diff. A combination of changes of all three settings may be necessary. If the VFD does not enter “Sleep” mode when there is no flow of water in the system, the Sleep Frequency must be increased.
· Min. Frequency The Min Frequency should be set to the minimum output frequency that the pump should be allowed to run. Contact your pump manufacturer to obtain the pump safe operation ranges.
· Max. Frequency The Max Frequency should be set to the maximum output frequency that the pump should be allowed to run. Contact your pump and motor manufacturer for motor selection and operation above 60 Hz.
· Accel. Set the Accel. time to the rate at which the output frequency will accelerate from 0Hz to 60Hz. Example: If the pump is required to accelerate from stop to 30Hz in 1 second, the Accel. time should be set to 2 seconds.

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· Decel. Set the Decel. time to the rate at which the output frequency will decelerate from 60Hz to 0Hz Example: If the pump is required to decelerate from 30Hz to a stop in 4 seconds, the Decel. time should be set to 8 seconds.
· PID – Proportional The PID – Proportional term is intended to be adjusted by advanced users only. The PID Proportional term is used to adjust the reaction of the output frequency to changes in the system pressure. Decreasing the PID – Proportional term will allow the VFD to make larger corrections to the output frequency with differences between the Set Pressure and actual system pressure. Increasing the PID – Proportional term will allow the VFD to make smaller corrections to the output frequency with differences between the Pressure Setting and actual system pressure.
· PID – Integral The PID – Integral term is intended to be adjusted by advanced users only. The PID – Integral term is used to adjust how quickly the output frequency reacts to changes in the system pressure. Decreasing the PID Integral term will allow the VFD to make quicker corrections to the output frequency with differences between the Pressure Setting and actual system pressure. Increasing the PID Integral term will allow the VFD to make slower corrections to the output frequency with differences between the Pressure Setting and actual system pressure.
· Transducer Range If using a different transducer other than supplied, set the Transducer Range to the full span rating of the pressure transducer. The Pressure Setting and Start Pressure Diff. values must also be updated after changing the Transducer Range, as these values are automatically scaled based on the Transducer Max Range.
· Transducer Offset The measured pressure can be adjusted up or down as desired to adjust to any small offset errors that may be present. For example, if there are other pressure gauges in the system more accurate than the VFD’s 4-20mA sensor. Adjust the Transducer Offset value to a positive or negative value as needed until the displayed pressure shows the desired reading. This positive or negavite value will be added to all pressure readings.
· HAND Run Time When in HAND, the pump will run at the HAND Speed for the number of minutes set in HAND Run Time if the user does not switch back to OFF or AUTO before that. The pump will stop when the HAND Run Time is done, at which point the controller will switch back to OFF mode. Set to 0 minutes to disable this protective function, allowing the pump to run in HAND mode indefinitely.
· HAND Speed This is the constant speed at which the pump will run while it is in HAND mode.
· Carrier Frequency This is the PWM switching frequency for the VFD inverter output.

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· Motor Auto-Tune This function will automatically measure and set detailed motor parameters into the VFD to more efficiently control the pump speed and torque. Run this function if an E.OC1 fault occurs upon startup. Input the motor horsepower and motor nameplate voltage, then select START. The display will indicate the Auto-Tune in progress and when the tuning is complete.

Auto-Tune Results and Actions

Result Text Displayed

Success

—

Tuning in progress

Failed (Forced End)

Failed (Inverter Protection)

Failed Failed Failed

(Current Limit) (75% Output Voltage) (Motor Not Connected)

Action to Take Exit Menu and check for proper operation. Wait for Auto-Tune to complete. Retry Auto-Tune. Check Motor S.F. Amps, Motor Voltage and Motor Hp settings and retry Auto-Tune. Check Motor Wiring. Check for a fluctuation of the power supply voltage. Check the motor wiring. Check Motor S.F. Amps, Motor Voltage and Motor Hp settings and retry Auto-Tune.

· Factory Reset This will reset all user settings and VFD parameters to their factory default values. The user must select “Confirm” when prompted “Are You Sure?” for the factory reset to be performed.

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TUNING & TROUBLESHOOTING GUIDE
· Testing & tuning the system: To optimize the system, it is necessary to test run the pump and record the following parameters: Pressure, Hz, & Amps. All are visible on the main screen of the display. Adjustments can then be made to optimize the system performance.
· Pressure Overshoot: Open multiple valves (faucets). Check to see if the pressure drops and the pump starts. Ensure that the pump starts when pressure drops below the setpoint ­ differential. As the pump starts and ramps up, leave the valves open and ensure the pressure increases rapidly and reach the set pressure. Record the Amp reading when the pump is running at full speed (60Hz). It is not uncommon for the pressure to overshoot the setpoint by 2~8 PSI. If the overshoot is excessive (causing a high-pressure alarm), check the following (in order of importance. Only go to the next step after completing the first one. Do not go to the next step if the previous one fixes the problem. Do not change multiple parameters at the same time) 1) Check sizing and pre-charge of the pressure tank (Hydropneumatic tank) 2) Reduce the PID integral term. (From 1.0 to 0.8 sec) 3) Decrease the Max Frequency by 3Hz and try again
· Dry Run: The pump will shut down when running at full speed (60Hz) and is not able to meet the set pressure and has low amps. Record the Amp reading during normal pumping conditions and set the “Dry Run Amps” at 20% under this value. If the well is low producing, it is possible to set a Recharge timer. The Dry Run alarm will automatically reset at the end of the Recharge timer and the pump will run again.
· Excessive cycling: If the pump is cycling too often, check the following: Sleep Frequency: Lower by 2Hz and try again.
· Not shutting off: If the pump does not shut off when there is no flow (all valves closed), check the following: Raise the Sleep Frequency 3Hz above the frequency observed when running at no flow. Check sizing and pre-charge of the pressure tank (Hydropneumatic tank).

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H2O Drive® Panel Operation Manual

SYSTEM FAULTS

ERROR MESSAGES

MAIN DISPLAY MESSAGE HMI Communication Lost Pressure Sensor Failure
High Pressure Alarm Low Pressure Alarm Floor Sensor Alarm Low Water Alarm DRY RUN (Flashing)
DRY RUN

DESCRIPTION OF FAULT ALARM Loss of communications between VFD and display Pressure transducer fault (Analog input <3.7mA or >20.7mA) Pressure > High Pressure Alarm setpoint Pressure < Low Pressure Alarm setpoint Floor Sensor digital input is active, VFD is shut down. Low Water digital input is active, VFD is shut down. Pump Amps low / VFD full speed / pressure under setpoint–Impending shut down (timer counting down) Run Dry Fault (Auto-Reset timer counting down or Manual Reset required).

VFD FAULTS

Over-current During Accel Over-current (Const Speed) Over-current During Decel Over-voltage 1 Over-voltage 2 Over-voltage 3 VFD Overload Trip Motor Overload Trip VFD Overheat Stall Prevention Ground Fault Output Phase Loss Inrush Current Limit Invalid Analog Input VFD EEPROM Fault Fault Retry Exceeded VFD CPU Fault Output Amps Detection VFD CPU Fault Input Phase Loss Brake Transistor Alarm External Thermal Overload External Thermistor Trip Disconnected PU Safety Circuit Fault

E. OC1 Overcurrent Trip During Acceleration E. OC2 Overcurrent Trip During Constant Speed E. OC3 Overcurrent Trip During Deceleration * E. OV1 Regenerative Overvoltage E. OV2 Regenerative Overvoltage E. OV3 Regenerative Overvoltage Trip E. THT Inverter Overload Trip E. THM Motor Overload Trip E. FIN Overheat E. OLT Stall Prevention E. GF Output Side Earth (ground) E. LF Output Phase Loss E. IOH Inrush Current Limit Circuit E. AIE Analog Input Fault E. PE Parameter Storage Device Fault E. RET Retry Count Excess E. 5/E CPU fault E. CDO Output Current Detection Value Exceeded E. CPU VFD CPU Fault E. ILF Input Phase Loss E. BE Break Transistor Alarm Detection E. OHT External Thermal Relay Operation E. PTC Thermistor Operation E. PUE PU Disconnection E. SAF Safety Circuit Fault

• If an OC1, OC2, or OC3 fault occurs frequently, a motor Auto-Tune can often remedy this. The Auto-Tune function can be found in the Advanced menu.

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H2O Drive® Panel Operation Manual

208/240 VAC SINGLE PHASE INCOMING POWER
L1 L2

RD150 & RD300 SCHEMATIC

TB2
L2 L1
DISPLAY

FACTORY JUMPER

S/L2 R/L1 PU
SO RL SD

W P1 P / +
V
RUN MON_PRM PU_EXT NET
U

RUN

STOP RESET

MODE SET

PU EXT

G

D700 DRIVE

G

A

C STR

VFD 112

5

RM SE
SD RUN
4 STF
PC

VARIABLE FREQUENCY DRIVE

4 TURNS EACH

TB2

W

V

U

G

RA

ALARM

CONTACTS
RC

S2
LOW WATER

CM

ALARM

S1

FLOOR

SENSOR
CM

BU

BN

TB1

PUMP 1

208/240VAC 3 PHASE

PRESSURE TRANSDUCER

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H2O Drive® Panel Operation Manual

RD500 SCHEMATIC

(CONNECT L1 & L2 ONLY FOR SINGLE PHASE INCOMING POWER)
208/240 VAC THREE PHASE INCOMING POWER
L1 L2 L3

TB2
L3 L2 L1
DISPLAY
TAS125 THERMOSTAT

DC CHOKE (REMOVE FACTORY JUMPER)

T/L3 S/L2 R/L1 PU

W

P1

P / +

V

RUN MON_PRM
PU_EXT NET
U

RUN

STOP RESET

MODE SET

PU EXT

G

G
D700 DRIVE
A

SO

C

RL

STR

SD

5

VFD 112

RM

SE

SD

RUN

4

STF

PC

VARIABLE FREQUENCY DRIVE

FAN125

TB2
W V U G

PUMP 1

208/240VAC 3 PHASE

RA

ALARM

CONTACTS
RC

S2

LOW WATER

ALARM
CM

S1

FLOOR

CM

SENSOR

BU

BN
TB1

PRESSURE TRANSDUCER

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H2O Drive® Panel Operation Manual

208/240 VAC THREE PHASE INCOMING POWER
L1 L2 L3

RD750 SCHEMATIC

TB2
L3 L2 L1
DISPLAY
TAS125 THERMOSTAT

FACTORY JUMPER

T/L3 P1 S/L2

W P / +
V
RUN MON_PRM PU_EXT NET
U

R/L1 PU

RUN

STOP

MODE

RESET

SET

PU

EXT

G

G

D700 DRIVE A

SO

C

RL

STR

SD

5

VFD 112

RM

SE

SD

RUN

4

STF

PC

VARIABLE FREQUENCY DRIVE

FAN125

TB2
W V U G

PUMP 1

208/240V 3 PHASE

RA

ALARM

RC

CONTACTS

S2

LOW WATER

CM

ALARM

S1

FLOOR

CM

SENSOR

BU

BN
TB1

PRESSURE TRANSDUCER

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H2O Drive® Panel Operation Manual

Technical Support: +1 800-746-6287 techsupport@sjeinc.com www.sjerhombus.com
Technical Support Hours: Monday-Friday, 7 A.M. to 6 P.M. Central Time
PN 1076661D 11/23 © 2023 SJE, Inc. All Rights Reserved. SJE RHOMBUS is a trademark of SJE Inc.

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