SJE RHOMBUS RD150 H2O Drive Constant Pressure Control Panel User Manual

RD150 H2O Drive Constant Pressure Control Panel
H2O Drive™
Constant Pressure Control Panel
For Submersible Well Pumps
User Manual
RD150 / RD300 / RD500 / RD750

RD150 H2O Drive Constant Pressure Control Panel

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

****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,  NSI/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.

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.

SYSTEM OVERVIEW

RD150, RD300, RD500 and RD750

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/ So

• 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)

PART NUMBER| MODEL| DESCRIPTION| RATED AMPS¹| S.F. AMPS²| HP| INPUT| OUTPUT| ENCLOSURE DIMENSION| SHIPPING WEIGHT
---|---|---|---|---|---|---|---|---|---
1076917| RD150| H2O DRIVE – 1.5HP| 7.0A| 7.3A| 0.5/0.75/1.0/1.5| 230V, 1PHASE| 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.

MINIMUM CAPACITY OF PRESSURE TANK

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.

INITIAL PRESSURE TANK CHARGE PRESSURE

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.

|
Electrical Connections Diagram
RD150 & RD300| Electrical Connections Diagram
RD500 & RD750
---|---
|

TERMINAL CONNECTIONS

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.

| Motor| Incoming Power| Motor Cable Length (75C)¹ (Feet)
---|---|---|---
MODEL| HP| SFA²| AWG| CB| 14 AWG| 12 AWG| 10AWG| 8AWG

RD150

| 1/2HP| 2.9A| 14| 15A| 800| | |
3/4HP| 3.9A| 14| 15A| 650| | |
1.0HP| 4.7A| 12| 15A| 550| | |
1.5HP| 6.1A| 12| 25A| 410| 650| |
| | | | | | | |
RD300| 2.0HP| 8.1A| 10| 25A| 320| 500| 800|
3.0HP| 10.1A| 10| 30A| 240| 380| 600|
| | | | | | | |
RD500| 5.0HP| 17.5A| 6| 50A| 140| 230| 350| 550
RD750| 7.5HP| 26.4A| 6| 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.

PROGRAMMING

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

MAIN MENU

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.

required.
Pressure Setting| 0| Transducer Range| PSI| 60| Enter the target pressure to maintain

Motor S.F. Amps

| 1.80| 7.50| ****

A

| 5.90| RD150 default set for: 1.5HP, 230V, 60Hz, 5.9 SFA
2.50| 11.00| 10.90| RD300 default set for: 3.0HP, 230V, 60Hz, 10.9 SFA
8.00| 17.80| 17.80| RD500 default set for: 5.0HP, 230V, 60Hz, 17.8 SFA
8.00| 31.80| 26.40| RD750 default set for: 7.5HP, 230V, 60Hz, 26.4 SFA
HMI Setup Menu
Color Theme| Blue/Dark, Green/Dark| | Green/Dark| The color palette used for the display.
Password Setup| 00-00| 99-99| | 00-00| Will not display if the user has not yet entered the correct password. 00-00 will disable password protection.
Advanced Menu
Start Pressure Diff.| 0| Set Pressure -1| PSI| 5| Pressure drop before starting the pump (Wake up).
High Pressure Alarm| 0| Transducer Range| PSI| 80| Will automatically be set 20 PSI above Pressure Setting during Quick Start.
Low Pressure Alarm| 0| Set Pressure -1| PSI| 15|
Low Pressure Delay Time| 0| 999| sec| 30|
Dry Run Amps| 0.00| Motor S.F. Amps| A| 0.00| 0.00A = Dry Run Disabled
Dry Run Delay Time| 0| 999| sec| 20|
Dry Run Reset Mode| Auto-Reset| Manual-Reset| | Auto-Reset|
Dry Run Recharge Time| 0.1| 9.9| hr| 1.0|
Motor Voltage| 200.0| 240.0| V| 230.0| Motor nameplate Voltage. Cannot be greater than the measured incoming voltage to the control panel.
Sleep Frequency| 0.00| Max Frequency| Hz| 35.00| Frequency at low flow. Timer will start when Hz < Sleep Hz.
Sleep Time| 0.0| 3600.0| sec| 10.0| Delay before stopping the pump in sleep mode (no flow).
Min. Frequency| 20.00| Max Frequency| Hz| 30.00| Lowest Hz the pump is allowed to Run before Stopping in sleep mode.
Max. Frequency| 35.00| 80.00| Hz| 60.00| Highest Hz the pump is allowed to Run when Pressure < Set Pressure. Do not set >60Hz without consulting with the pump manufacturer and sizing the motor/VFD correctly.
1st Accel| 0.0| 300.0| sec| 2.0| Initial acceleration on pump start.
1st Decal| 0.0| 300.0| sec| 2.0|
Accel/Decal 2| 0.0| 300.0| sec| 2.0|
Accel 2 Switchover Hz| 0.00| 60.00| Hz| 30.00|
PID – Proportional| 0.1%| 500.0%| %| 35.0%| Expert users only.
PID – Integral| 0.1| 100.0| sec| 1.0| Expert users only.
Transducer Range| 1| 300| PSI| 150| Match the pressure transducer range.
Transducer Offset| -10.0| 10.0| PSI| 0.0| Used to adjust the pressure transducer reading higher or lower.
HAND Run Time| 0| 999| min| 5| The timer will stop the pump when operating in Manual. 0 = no timeout (Continuously Run at Manual Hz)
HAND Speed| 30.00| Max. Frequency| Hz| 45.00|
Carrier Frequency| 0.7| 10| kHz| 2|

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.

• 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.

• 1st Accel.
  Set the 1st Accel. time to the rate at which the output frequency will accelerate from 0Hz to the Accel 2 Switchover Frequency. This time is based on the time the VFD would take to accelerate from 0Hz to 60Hz.  Example: If the pump is required to accelerate from stop to 30Hz in 1 second the 1st Accel. time should be set to 2 seconds.

• 1st Decal.
  Set the 1st Decel. time to the rate at which the output frequency will decelerate from the Accel 2 Switchover Frequency to a stop. This rate is based on the time the VFD would take to decelerate from 60Hz to  0Hz. Example: If the pump is required to decelerate from 30Hz to a stop in 4 seconds the 1st Decel. time should be set to 8 seconds.

• Accel/Decel 2
  Set the Accel/Decel 2 time to the rate at which the output frequency will change as the VFD is operating above the Accel 2 Switchover Frequency. This time is based on the time the VFD would take the accelerate or decelerate between 0Hz to 60Hz.

• Accel 2 Switchover Hz
  The Accel 2 Switchover Hz frequency should be set to the frequency at which the acceleration and deceleration rates change. This is typically used on submersible type pumps, where the manufacturer requires a  fast acceleration from a stop to 30Hz for proper thrust bearing operation.

• 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 negative 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.

• 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.

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 (Hydropneumatics 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 (Hydropneumatics tank).

ERROR MESSAGES

| MAIN DISPLAY MESSAGE| DESCRIPTION OF FAULT ALARM
---|---|---

SYSTEM FAULTS

| HMI Communication Lost| Loss of communications between VFD and display
Pressure Sensor Failure| Pressure transducer fault (Analog input <3.7mA or

20.7mA)
High Pressure Alarm| Pressure > High Pressure Alarm setpoint
Low Pressure Alarm| Pressure < Low Pressure Alarm setpoint
Floor Sensor Alarm| Floor Sensor digital input is active, VFD is shut down.
Low Water Alarm| Low Water digital input is active, VFD is shut down.
DRY RUN (Flashing)| Pump Amps low / VFD full speed / pressure under setpoint–Impending shut down (timer counting down)
DRY RUN| Run Dry Fault (Auto-Reset timer counting down or Manual Reset required).

---

VFD FAULTS

| |
Over-current During Accel| E. OC1 Overcurrent Trip During Acceleration
Over-current (Cost Speed)| E. OC2 Overcurrent Trip During Constant Speed
Over-current During Decel| E. OC3 Overcurrent Trip During Deceleration
Over-voltage 1| E. OV1 Regenerative Overvoltage
Over-voltage 2| E. OV2 Regenerative Overvoltage
Over-voltage 3| E. OV3 Regenerative Overvoltage Trip
VFD Overload Trip| E. THT Inverter Overload Trip
Motor Overload Trip| E. THM Motor Overload Trip
VFD Overheat| E. FIN Overheat
Stall Prevention| E. OLT Stall Prevention
Ground Fault| E. GF Output Side Earth (ground)
Output Phase Loss| E. LF Output Phase Loss
Inrush Current Limit| E. IOH Inrush Current Limit Circuit
Invalid Analog Input| E. AIE Analog Input Fault
VFD EEPROM Fault| E. PE Parameter Storage Device Fault
Fault Retry Exceeded| E. RET Retry Count Excess
VFD CPU Fault| E. 5/E CPU fault
Output Amps Detection| E. CDO Output Current Detection Value Exceeded
VFD CPU Fault| E. CPU VFD CPU Fault
Input Phase Loss| E. ILF Input Phase Loss
Brake Transistor Alarm| E. BE Break Transistor Alarm Detection
External Thermal Overload| E. OHT External Thermal Relay Operation
External Thermistor Trip| E. PTC Thermistor Operation
Disconnected PU| E. PUE PU Disconnection
Safety Circuit Fault| E. SAF Safety Circuit Fault

RD150 & RD300 SCHEMATIC

RD500 SCHEMATIC

RD750 SCHEMATIC

Technical Support: +1800-746-6287
techsupport@sjeinc.com
www.sjerhombus.com
Technical Support Hours: Monday-Friday, 7 A.M. to 6 P.M. Central Time
PN 1076661B 03/23 © 2023 SJE, Inc. All Rights Reserved.
SJE RHOMBUS is a trademark of SJE Inc.

Documents / Resources

| SJE RHOMBUS RD150 H2O Drive Constant Pressure Control Panel [pdf] User Manual
RD150 H2O Drive Constant Pressure Control Panel, RD150, H2O Drive Constant Pressure Control Panel, Constant Pressure Control Panel, Pressure Control Panel, Control Panel
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