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Warranty 

 

TWRF1 SCR Power Controller 

24 

Ametek HDR Power Systems 

Rev 2 

 

CHAPTER 7 – Warranty Policy  

 
This chapter details the warranty policy of Ametek HDR Power Systems products. Ametek HDR Power 
Systems standard warranty policy is listed below.  Note that the warranty policy for a particular job agreement 
may be different from the standard policy.  When in doubt about warranty information, consult the factory

 

7.1 

Warranty 

 

WARRANTY 

 
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.  This  warranty  is  not 
transferable by the initial end user. 
 
AMETEK  HDR  MAKES  NO  OTHER  WARRANTIES,  EXPRESSED  OR  IMPLIED  (INCLUDING, 
WITHOUT  LIMITATION,  MERCHANTABILITY,  FITNESS  FOR  PURPOSE,  OR  AGAINST 
INFRINGEMENT OF ANY PATENT) EXCEPT AS EXPRESSLY PROVIDED HEREIN. 
 
THE  REMEDY  OF  REPAIR  OR  REPLACEMENT  IS  CUSTOMER'S  SOLE  AND  EXCLUSIVE 
REMEDY  AND  WILL  SATISFY  ALL  OF  AMETEK  HDR'S  LIABILITIES,  WHETHER  BASED  ON 
CONTRACT, NEGLIGENCE, TORT, PRODUCT LIABILITY, STRICT LIABILITY, OR OTHERWISE. IN 
NO  EVENT  WILL  AMETEK  HDR  BE  LIABLE  FOR  INCIDENT  OR  CONSEQUENTIAL  DAMAGES, 
NOR  IN  ANY  EVENT  SHALL  HDR'S  LIABILITY  EXCEED  THE  UNIT  PRICE  OF  ANY  DEFECTIVE 
PRODUCT OR PART.    

 

7.2 

In-house Repair Services 

For all repair service at Ametek HDR Power Systems, you will need a Repair Material Authorization 
(RMA) number.  Call 

(614) 308-5500

 and request a Repair Material Authorization (RMA) number.  

Please reference this number when making inquiries.  Use the shipping address below for returns: 
 
 

Ametek HDR Power Systems  

 

530 Lakeview Plaza Blvd, Ste C 

 

Worthington, Ohio, 43085 

 

Attention:  Repair Department/RMA #(       ) 

 
Prepay the shipment and include the following information if you are not using an Ametek HDR Power 
Systems Return Repair Tag:  the Repair Material Authorization (RMA) number, part number, a 
description of the problem, contact phone number, a technical contact phone number (if different) and 
any additional comments.  Put the Repair Material Authorization (RMA) number on the label. 

 

Warranty Repairs:  In addition to securing Repair Material Authorization (RMA) number, please supply 
the 

System Serial number

 (found on the system, usually on the tag inside the cabinet door). 

 
Non-Warranty Repairs:  Secure a Repair Material Authorization (RMA) number from Ametek HDR 
Power Systems.  The price for exchange or repair will be quoted when the unit can be evaluated.  
Once determined a quote will be provide, please include your hard copy purchase order (PO) for this 
amount, or fax your PO directly to the Sales Department at (614) 308-5506.  Expedited services are 
available upon request. 

Summary of Contents for TWRF1 SCR Series

Page 1: ...tion and Maintenance Manual Number 9100051 Revision 2 530 Lakeview Plaza Blvd Ste C Worthington Ohio USA 43085 Toll Free 1 888 PWR CNTL 797 2685 Phone 614 308 5500 Fax 614 308 5506 Web www hdrpower co...

Page 2: ...presentative nearest you please call Ametek HDR Power Systems main office at 614 308 5500 Revision 1 December 2017 Initial Release Revision 2 Aug 2022 General Revision 2022 by Ametek HDR Power Systems...

Page 3: ...mote Manual Control with a Potentiometer 11 3 4 Process Command Input Control 12 3 5 Auto Manual Control with a Controller and Remote Potentiometer 13 3 6 On Off Control 14 3 7 Shutdown 14 3 8 Overcur...

Page 4: ...wer Controller ii Ametek HDR Power Systems Rev 2 7 1 Warranty 24 7 2 In house Repair Services 24 7 3 Field Service Repairs 25 APPENDIX 26 Appendix A System Schematic 26 Appendix B 30 60 A Outline 27 A...

Page 5: ...ut Connections 13 Figure 3 4 Auto Man Control with Controller and Remote Potentiometer 13 Figure 3 5 On Off Control 14 Figure 3 6 Shutdown Control 14 Figure 3 7 Current Limit Trip Board 15 Figure 4 1...

Page 6: ...Table of Contents TWRF1 SCR Power Controller iv Ametek HDR Power Systems Rev 2...

Page 7: ...anch circuit fused disconnect or circuit breaker with this Power Controller is required to ensure the safety of operating personnel CAUTION HAZARDOUS VOLTAGES exist at the Power Controller Load AT ALL...

Page 8: ...Safety Instructions TWRF1 SCR Power Controller 2 Ametek HDR Power Systems Rev 2...

Page 9: ...the SCRs is controlled by a digital firing control circuit synchronized in phase with line frequency either 50 or 60 Hz A soft start approximately a 1 cycle ramp feature is standard that allows the Po...

Page 10: ...ch the output can increase to prevent high inrush currents with transformer coupled loads or high cold to hot resistance ratios such as tungsten heating elements The rate of increase is limited to app...

Page 11: ...red Power output linearity versus control signals input 2 Non isolated 5 Isolated Power SCRs protection Current surge Subcycle I T semiconductor fuse OPTIONAL Transient voltage spikes dv dt Metal Oxid...

Page 12: ...Description TWRF1 SCR Power Controller 6 Ametek HDR Power Systems Rev 2...

Page 13: ...15 30 A and 10 AWG or larger wire for the other sizes NOTICE Use copper conductors rated 75 C minimum for all model current ratings On the internal side of the TWRF1 the wire from L2 should connect to...

Page 14: ...nal Input HDR s TWRF Phase Fired SCR Power Controllers are configured for a potentiometer non isolated but has the capability of having either an isolated current or non isolated voltage Command Signa...

Page 15: ...cedure as follows 1 Open the SCR power controller and locate transformer T1 The primary side of T1 transformer will contain two wires one black the other white and black Refer to figure 2 3 Figure 2 3...

Page 16: ...Operation TWRF1 SCR Power Controller 10 Ametek HDR Power Systems Rev 2...

Page 17: ...icator The Command Signal Indicator is a green Light Emitting Diode LED located on the front cover of the unit The brilliance of this LED will change with a current Command Signal The brilliance incre...

Page 18: ...ge reading is at maximum h If necessary readjust ZERO with remote potentiometer fully CCW and SPAN control and remote potentiometer fully CW i Turn off the line power to the TWRF1 and disconnect the t...

Page 19: ...eter CW until the output trips to the desired level 3 5 Auto Manual Control with a Controller and Remote Potentiometer On closed loop processes it may be desirable to be able to operate the unit manua...

Page 20: ...enable the TWRF1 Figure 3 5 On Off Control Calibrate the system by performing the steps in 3 3 Note that zero power demand is accomplished by opening the contacts with the controller and maximum powe...

Page 21: ...Adjust the OC CUR PWR potentiometer fully CW b With the power controller at full output adjust OC CUR PWR potentiometer CCW until the unit shuts off c Adjust the OC CUR PWR potentiometer slightly CW d...

Page 22: ...Operation TWRF1 SCR Power Controller 16 Ametek HDR Power Systems Rev 2...

Page 23: ...ing of the SCRs is controlled by a digital firing control circuit synchronized to the line frequency 50 or 60 Hz The firing control circuit may be manually controlled by the built in ZERO control or a...

Page 24: ...rnal control device From midpoint to extreme CW is the positive control region whose extremes correspond to 0 and 100 power output respectively as manually adjusted The SPAN control is used as a final...

Page 25: ...riable from zero to some intermediate value but cannot be brought to maximum The symptoms listed may be caused by one or more of the following an environmental problem faulty input power or load conne...

Page 26: ...ns should be free of dust or dirt for proper heat transfer and free of obstructions which could prevent proper airflow Contamination The unit should be periodically cleaned of all dust and dirt Howeve...

Page 27: ...n 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 section defective Replace the fuse and retur...

Page 28: ...rrange for service at your site or by shipment to Ametek HDR Power System as you request We will make every possible attempt to support your emergency on site needs regardless of how contacted 6 2 Spa...

Page 29: ...0 2087000 2099112 6791114 1 1 1 1 60 Ampere Units PCB Assy PF1 Extended Gate PCB Assy Over current Trip PCB Assy DVDT SCR dual pkg 1622 A 1400 V 2099160 2087000 2099112 6722114 1 1 1 1 90 Ampere Units...

Page 30: ...Y OR OTHERWISE IN NO EVENT WILL AMETEK HDR BE LIABLE FOR INCIDENT OR CONSEQUENTIAL DAMAGES NOR IN ANY EVENT SHALL HDR S LIABILITY EXCEED THE UNIT PRICE OF ANY DEFECTIVE PRODUCT OR PART 7 2 In house Re...

Page 31: ...Power Systems 25 7 3 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...

Page 32: ...Warranty TWRF1 SCR Power Controller 26 Ametek HDR Power Systems Rev 2 APPENDIX Appendix A System Schematic Note Thermostat and fan not included on 60 A and smaller models...

Page 33: ...TWRF1 SCR Power Controller Appendix Rev 2 Ametek HDR Power Systems 27 Appendix B 30 60 A Outline R...

Page 34: ...Warranty TWRF1 SCR Power Controller 28 Ametek HDR Power Systems Rev 2 Appendix C 90 225 A Outline R...

Page 35: ...Notes...

Page 36: ...530 Lakeview Plaza Blvd Ste C Worthington Ohio 43085 USA...

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