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Summary of Contents for SJE Rhombus SubCon 1.5
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Page 2: Electrical Shock Hazard
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. -
Page 3: Table Of Contents
TABLE OF CONTENTS Included in the SubCon™ Package ..... .2 Simplex Operation Diagram ......3 Pressure Tank/Pressure Relief Valve . -
Page 4: Included In The Subcon™ Package
Thank you for purchasing the SubCon™ Variable Frequency Drive controller. The SubCon™ VFD provides a state-of-the-art solution for water well pumping control applications. The controller will monitor the water pressure continuously and automatically adjust the pump speed to maintain a constant pressure discharge. Included in the box: 1. -
Page 5: Simplex Operation Diagram
Simplex Operation Diagram for SubCon™ 1.5 and SubCon™ 3.0 WARNING! A pressure relief valve must be installed. SJE-Rhombus SubCon™ VFD User Manual... -
Page 6: Pressure Tank/Pressure Relief Valve
Pressure Tank To maintain constant pressure and prevent frequent startup, a small-capacity pressure tank is needed in the system (refer to the minimum capacity of pres- sure tank table below). The SubCon™ VFD may use the pressure tank of a larger capacity than listed on the table. -
Page 7: Nameplate, Mounting And Conduit Size
Product Nameplate and Mounting Information on Nameplate Figure 1 VFD Nameplate *Description of VFD Model SubCon™ 1.5 - VFD Model 1.5 or 3.0 Outline and conduit size for SubCon™ 1.5 and SubCon™ 3.0 Hole Size Conduit Size 0.82 in (21 mm) 1/2 in 1.10 in (28 mm) 3/4 in... -
Page 8: Electrical Connections
Electrical Connections Diagram for SubCon™ 1.5 and SubCon™ 3.0 Power Terminals Control Terminals Torque: Torque: 16.0 in.lbf (18.4 kgf.cm) 4 in.lbf (4.6 kgf.cm) Wire Size: Wire Size: 10-14 AWG Stranded 14-22 AW 12-14 AWG Solid Wire Type: Wire Type: Copper only 60 C or 75 Copper only, 75 Model... -
Page 9: Terminal Connections
Power Terminal Connections Symbol Function , L2 Incoming power terminal block Output power terminal block for the pump U/T1, V/T2, W/T3, motor connections Control Terminal Connections Symbol Function Pressure transducer connection 24V, S 24V = 24 VDC transducer power S = 4-20mA signal from transducer S1, S2, G Communication (for duplex operation) Remote stop switch input: use with an... -
Page 10: Grounding Method
SJE-Rhombus SubCon™ VFD User Manual... -
Page 11: Specifications
SubCon™ Specifications SUBCON™ 1.5 SUBCON™ 3.0 Output Rating Maximum Applicable Motor Output (HP) 1.5 HP 3 HP Rated Output Current (A) 5.9 A 11.0 A Output voltage 0 - 240 VAC three phase Output Frequency (Hz) 30 - 60 Hz (default) - adjustable Carrier Frequency (kHz) 2.5 - 8 kHz Input Rating... -
Page 12: Cable Routing Guidelines
SJE-Rhombus SubCon™ VFD User Manual... -
Page 13: Digital Control Buttons/Keypad
Digital Control Buttons This section describes the display unit and LED indicators shown below. It also describes the keypad operation. Display LED Indicators Display Window SET Key MODE Key DOWN Key UP Key STOP/RESET Key RUN Key Description of LED Indicator Red light ON when the VFD is stopped (the pump will not run). -
Page 14: Display Messages
How to use the Keypad Viewing Operational Information Using Buttons Display Description Displays the operating pressure in PSI (verify that it is equal to the reading on the pressure gage) Displays the set pressure in PSI (default is 50 PSI). Displays the frequency (motor speed in Hz). -
Page 15: Changing Br And Pr Parameters
Changing BR and PR parameters How to Change BR Mode Parameters How to Change PR Mode Parameters Viewing the Alarm Log SJE-Rhombus SubCon™ VFD User Manual... -
Page 16: Br Parameters
BR Parameters Table Parameter Value Parameter Name Min. Max. Preset Unit Function Description Horse Power (SubCon™ 1.5) 0.5HP, 0.75HP, 1HP, BR-00* Horse Power (SubCon™ 3.0) 1.5HP, 2HP, 3HP 1.5HP 20.0 Set to the motor rated current Motor Rated BR-01* Current 3.0HP 20.0 10.9... - Page 17 BR-02 Maximum Frequency [BR-02] This parameter is used to set the VFD maximum output frequency delivered to the motor. 60Hz is the default value. Warning! Extreme precautions must be taken in order to operate the pump at frequencies over 60Hz: •...
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Page 18: Pr Parameters
PR Parameters Table (factory-trained technicians only) Parameter Value Parameter Name Min. Max. Default Unit Function Description PR-00* PFC Circuit 0: Not Used, 1: Used PR-01* Operation Mode 0:Basic VFD Control, 1:Pressure Control 2: 3.2kHz, 3: 4.0kHz, 4: 5.0kHz PR-02* PWM Frequency 5: 6.4kHz, 6: 8.0kHz Time during which the motor operates PR-03... -
Page 19: Operation Mode
PR Parameters Description PR-00 Power Factor Correction (PFC) This is used for long motor cable length (from the VFD to the motor). PFC compensates for voltage drop and is able to deliver full power to the motor. 0: PFC Circuit Not Used 1: PFC Circuit Used PR-01 Operation Mode... -
Page 20: Stop Method
PR-10 Stop Method This parameter is used for setting stop mode of the motor. 0: DECEL TO STOP - This mode is used when the VFD is stopped, the motor will decelerate according to the [PR-04] parameter. 1: COAST TO STOP - Upon a “STOP” command, the VFD output voltage is shut off and the motor coasts to a stop. - Page 21 PR-22 Level Switch Contact Point One of the methods to detect low water level using an external device (level switch, etc.). When low water level is detected by the level switch, the VFD will stop. When this low level alarm is cleared, the VFD resumes its normal operation. The VFD should be set according to the external device contact point setting.
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Page 22: Duplex Vfd Operation
Duplex VFD Operation Electrical Connections Master VFD Slave VFD Two Subcon™ VFDs may be used to provide constant pressure to a system. In this mode, the pumps will automatically alternate and both pumps will run if one pump is not able to meet the set pressure. SJE-Rhombus SubCon™... -
Page 23: Duplex Communication Parameters Setup
Duplex Communication Parameters Setup Set master VFD PR-19 parameter to 0. Set slave VFD PR-19 parameter to address 1. You will be able to set the pressure on any controller when the communication between the two VFDs operates correctly. The set pressure for both VFDs will be the same. (Refer to the booster mode pressure set method) Press the Run buttons of each of the VFDs to start the operation. -
Page 24: Troubleshooting And Faults
Troubleshooting This VFD has a built-in diagnosis system that detects faults in the system and displays the corresponding fault messages. When a fault is detected, the corre- sponding protective function is activated to stop the VFD and ensure that it will restart when the fault is cleared. - Page 25 Error Symptoms and Actions Error Symptoms Major Causes Actions Operation pressure does Check valve installed backward Repair or replace the check valve. not rise after the pump flow or damaged. starts up. A smaller capacity pump was selected. Replace the pump with one of proper capacity. Foreign substances got into the pump.
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Page 26: Interference With Other Equipment
Interference with Other Equipment INFORMATION TO THE USER This equipment has been tested and found to comply with the limits for Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. -
Page 27: Three-Year Limited Warranty
THREE-YEAR LIMITED WARRANTY ® SJE-RHOMBUS warrants to the original consumer that this product shall be free of manufacturing defects for three years after the date of manufacture. During that time period and subject to the conditions set forth below, SJE-RHOMBUS will repair or replace, for the original consumer, any component which proves to be defective due to defective materials or workmanship of SJE-RHOMBUS.
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