Ametek RF3 SCR Series Instruction, Operation And Maintenance Manual
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Ametek RF3 SCR Series Instruction, Operation And Maintenance Manual

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RF3 SCR Series
30-1200 Amperes
Three-phase
Phase-fired
SCR POWER CONTROLLER
Instruction, Operation and
Maintenance Manual
Number: 9100047
Revision 3
530 La keview Pl aza Blvd, Ste C
Worthington, O hio, USA 43085
To l l F r e e : 1 - 8 8 8 - P W R - C N T L ( 7 9 7 - 2 6 8 5 )
P h o n e : 6 1 4 - 3 0 8 - 5 5 0 0
F a x : 6 1 4 - 3 0 8 - 5 5 0 6
We b :
w w w. h d r p o w e r. c o m

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  • Page 1 RF3 SCR Series 30-1200 Amperes Three-phase Phase-fired SCR POWER CONTROLLER Instruction, Operation and Maintenance Manual Number: 9100047 Revision 3 530 La keview Pl aza Blvd, Ste C Worthington, O hio, USA 43085 To l l F r e e : 1 - 8 8 8 - P W R - C N T L ( 7 9 7 - 2 6 8 5 )
  • Page 2 Revision 2 July 2015 Revised Address Revision 3 Aug 2022 General Revision  2022 by Ametek HDR Power Systems. No portion of this document may be reproduced either mechanically or electronically without the prior consent of Ametek HDR Power Systems...
  • Page 3 Static Precautions when Servicing Environmental Problems Input Power and Load Connections Correcting Troubles in the RF3 Itself CHAPTER 6 - SERVICE ............................. 23 Communication Procedures Spare Parts Orders – Routine or Emergency Spare Parts List Rev 3 Ametek HDR Power Systems...
  • Page 4 In-house Repair Services APPENDIX ................................28 Appendix A – System Schematic Appendix B – 30-225 A Outline Appendix C – 350-500 A Outline Appendix D – 650 A Outline Appendix E – 800-1200 A Outline Ametek HDR Power Systems Rev 3...

  • Page 5: Table Of Contents

    Table 2.2 Transformer Voltage Wiring ......................10 Table 5.1 Troubleshooting Chart (Symptoms and Solutions) ..............21 Table 5.2 Torque Specifications ........................21 Table 6.1 RF3 Spare Parts List ........................24 Table 6.2 RF3 Drawing List ..........................25 Rev 3 Ametek HDR Power Systems...
  • Page 6 Table of Contents RF3 SCR Power Controller Ametek HDR Power Systems Rev 3...
  • Page 7 In case of fire, use a dry chemical fire extinguisher to put out the fire. Using a liquid fire extinguisher may cause electric shock. The SCR Power Controller makes use of components dangerous for the environment (electronic printed circuit boards, electronic components). The components removed must be taken to specialized collection and disposal centers. Rev 3 Ametek HDR Power Systems...
  • Page 8 Safety Instructions RF3 SCR Power Controller Ametek HDR Power Systems Rev 3...
  • Page 9 The overcurrent trip includes a Form C relay output and provisions for a remote overcurrent reset push button. The relay output terminals are 39 and 40 for the N.C. and 40 and 41 for the N.O. The remote reset terminals are 37 and 38. Reference Figure 3.7. Rev 3 Ametek HDR Power Systems...

  • Page 10: Table 1.1 Kva Vs. Leakage Impedance

    Option LG will provide compression lugs for the 350-1200 A Power Controllers. Additional Options The options described above are the ones most commonly used. Additional options are available. For more information, contact Ametek HDR Power Systems. Ametek HDR Power Systems Rev 3...

  • Page 11: Table 1.3 General Specifications Of Rf3 Models

    ** If you will be using temperature/process controller, specify its output; e.g., 4-20 mA, 0-10 Vdc, 2-10 Vdc, etc. with your order. NOTE: The RF3 should be tested or operated with an adequate load since an open output will have line voltage at the load connection Rev 3 Ametek HDR Power Systems...
  • Page 12 Description RF3 SCR Power Controller Ametek HDR Power Systems Rev 3...

  • Page 13: Table 2.1 Wire Size Information

    Table 1.3 for fan power requirements by model. The RF3 terminals available for the 120 Vac fan connections are shown Figure 2.1 and in the schematic in Appendix A. Optional 220 Vac fans are available. Rev 3 Ametek HDR Power Systems...

  • Page 14: Figure 2.1 Fan And Thermostat Connections

    Command Signals. Zero based Command Signals may have a small amount of non-linearity (input to output) at the low end. This should not be a problem on closed loop systems. Ametek HDR Power Systems Rev 3...

  • Page 15: Figure 2.2 Isolated/Non-Isolated Switches

    (one black, the other white and black), the primary side of T2 will contain two wires (one red the other yellow). Refer to figure 2.3. Figure 2.3 T1, T2 Transformer Connections Rev 3 Ametek HDR Power Systems...

  • Page 16: Table 2.2 Transformer Voltage Wiring

    It is a good idea to identify the unit with a label or tag, noting that RF3 has been modified for line voltage other than what it was specified for. This may prevent accidental use on an incorrect line voltage in the future. Ametek HDR Power Systems Rev 3...

  • Page 17: Figure 3.1 Control Panel

    The RF3 is calibrated at the Factory for the specified input type and normally does NOT need adjustment. However, should a setup be required use the following methods. Refer to chapter 2.5 for the Command signal input configuration. a. Set the ZERO and SPAN controls fully CCW (counterclockwise). Rev 3 Ametek HDR Power Systems...

  • Page 18: Figure 3.2 Process Controller Input Connections

    With the power to the RF3 turned off, connect the potentiometer as shown in Figure 3.3. The CW position is the full power output position. Terminal TB1-5 is internally connected to a positive dc voltage source. Figure 3.3 Remote Control with a Potentiometer Ametek HDR Power Systems Rev 3...

  • Page 19: Figure 3.4 Auto/Man Control With Controller And Remote Potentiometer

    Note that the full CW position of the potentiometer is the full-power-output position. Figure 3.4 Auto/Man Control with Controller and Remote Potentiometer Place the AUTO/MAN switch to AUTO and calibrate the system as described in steps 3.3b through 3.3h. Rev 3 Ametek HDR Power Systems...

  • Page 20: Figure 3.5 On/Off Control

    When it is necessary to shutdown or disable the output, it is a simple matter. Connect a dry contact closure between terminals 3 and 4 of the firing circuit as shown in Figure 3.6. A closed contact will disable the RF3 output. Figure 3.6 Shutdown Control (Output Disabled By Contact Closure) Ametek HDR Power Systems Rev 3...

  • Page 21: Figure 3.7 Current Limit/Trip Board

    If the auto reset is Off, momentarily press the RESET pushbutton on the Current Limit option PCB on the inside front door. The power controller should turn on. Figure 3.7 Current Limit/Trip Board Rev 3 Ametek HDR Power Systems...
  • Page 22 Operation RF3 SCR Power Controller Ametek HDR Power Systems Rev 3...

  • Page 23: Figure 4.1 Ac Switch And Scr On-Time

    For each cycle of input there is one cycle of oscillator output. By this method, the RF3’s output will be held at 50 Hz or 60 Hz, depending on configuration. The input signal is filtered, then compared to the oscillator, improving noise immunity over conventional sync circuits. Rev 3 Ametek HDR Power Systems...
  • Page 24 This protection is necessary to prevent large surge currents associated with transformers and similar loads when power is first applied to them. The circuit comes into play during startup or after a power interruption of several cycles’ duration. Ametek HDR Power Systems Rev 3...
  • Page 25 Ametek HDR Power Systems emphasizes customer satisfaction by maintaining a rapid-response and cooperative customer-service. If operational difficulties occur, Ametek HDR Power Systems will provide replacement parts or units quickly, courteously and efficiently. If servicing problems arise that are not within the scope of the following troubleshooting guide, service is readily available, as detailed in Chapter 6.
  • Page 26 If it is above 122 ºF (50 ºC), steps should be taken to provide more cooling, or the RF3 should be moved to a cooler location, or call the Ametek HDR Power Systems service department. Excessive Vibration. A significant degree of pitched or unpitched vibration can cause numerous problems.

  • Page 27: Table 5.1 Troubleshooting Chart (Symptoms And Solutions)

    X1. On the Rx1 scale, the resistance should be infinite in both directions. If a shorted component is indicated in any of these cases, replace it. (2b) Firing control Return the power to the unit. If the problem persists, contact Ametek HDR section defective Power Systems service.
  • Page 28 Troubleshooting RF3 SCR Power Controller Ametek HDR Power Systems Rev 3...
  • Page 29 Answering Service operator of the nature and degree of your problem. In such cases the operator is authorized to call Ametek HDR Power Systems Service. We cannot, however, guarantee that service assistance will be available at any given off-hour time.

  • Page 30: Table 6.1 Rf3 Spare Parts List

    PCB Assy, DVDT 2071000 650 Ampere Units Fan, axial, 115 Vac, 350 CFM 4520002 Lug Kit, 2/3 Phase 650A 2710210 PCB Assy, PF3 Extended Gate 2099157 SCR, 1500 A, 1400 V 5015214 PCB Assy, DVDT 2072000 Ametek HDR Power Systems Rev 3...

  • Page 31: Table 6.2 Rf3 Drawing List

    Outline & Mounting, RF3 – 30 - 225 A M2710038 Outline & Mounting, RF3 – 350 A, 500 A M2710042 Outline & Mounting, RF3 – 650 A M2710044 Outline & Mounting, RF3 – 800, 1000, 1200 A M2710045 Rev 3 Ametek HDR Power Systems...
  • Page 32 AMETEK HDR warrants that the equipment delivered will be free from defects in workmanship and material for a period of five years from the date of shipment. AMETEK HDR will repair or replace, at AMETEK HDR's option, any part found defective during proper and normal use, provided that written notice of the nature of the defect is received by AMETEK HDR within the five year warranty period and that the customer returns the part to AMETEK HDR freight paid both ways.
  • Page 33 RF3 SCR Power Controller Warranty Field Service Repairs Repairs may be performed at your location. Please contact Ametek HDR Power Systems at (614) 308-5500 to discuss terms and conditions, to get the current service rates and to schedule field repairs at your location.
  • Page 34 Appendix RF3 SCR Power Controller APPENDIX Appendix A – System Schematic Ametek HDR Power Systems Rev 3...
  • Page 35 RF3 SCR Power Controller Appendix Appendix B – 30-225 A Outline Rev 3 Ametek HDR Power Systems...
  • Page 36 Appendix RF3 SCR Power Controller Appendix C – 350-500 A Outline Ametek HDR Power Systems Rev 3...
  • Page 37 RF3 SCR Power Controller Appendix Appendix D – 650 A Outline Rev 3 Ametek HDR Power Systems...
  • Page 38 Appendix RF3 SCR Power Controller Appendix E – 800-1200 A Outline Ametek HDR Power Systems Rev 3...
  • Page 39 Notes:...
  • Page 40 503 Lakeview Plaza Blvd, Ste C Worthington, Ohio, 43085 USA...

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