Table of Contents
Summary of Contents for AnsaldoSTS F-42
- Page 1 SM 5924 1000 Technology Drive, Pittsburgh, PA 15219 645 Russell Street, Batesburg, SC 29006 F-42 DC/DC C ONVERTER ASTS USA Part No. N16920401 Installation Operation Maintenance © Copyright 2009 SM 5924, Rev. 1 Ansaldo STS USA, Inc. June 2009...
- Page 3 Notices Proprietary Notice This document and its contents are the property of Ansaldo STS USA, Inc. (formerly known as Union Switch & Signal Inc., and hereinafter referred to as "ASTS USA"). This document is furnished to you on the following conditions: 1.) That no proprietary or intellectual property right or interest of ASTS USA is given or waived in supplying this document and its contents to you;...
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Page 4: Copyright
Revision History Revision History REV. DATE NATURE OF REVISION May, 1981 Initial Issue June, 2009 Revised value of C3 in Figure 4–1 © Copyright 2009, Ansaldo STS USA, Inc. 1000 Technology Drive, Pittsburgh, PA USA 15219-3120 645 Russell Street, Batesburg, SC 29006 www.ansaldo-sts.com All rights reserved. -
Page 5: Table Of Contents
Table of Contents Table of Contents DESCRIPTION...........................1-1 Electrical............................1-1 PRINCIPLES OF OPERATION ......................2-1 Input Filter ..........................2-1 Over Voltage Protection......................2-1 Switching Mode Pre-Regulator ....................2-1 Power Converter ........................2-1 INSTALLATION ..........................3-1 Mounting ...........................3-1 Electrical Connections ......................3-1 Calibration ..........................3-1 MAINTENANCE AND TROUBLESHOOTING ..................4-1 General .............................4-1 Converter Regulator Section.....................4-1 CONVERTER OUTPUT SECTION ..................4-3 CBI –... - Page 6 Table of Contents List of Figures Figure 3–1. Plug Connector Pinning ....................3-1 Figure 4–1. F-42 DC/DC Converter Schematic Diagram ..............4-2 Figure 4–2. CB3 Voltage Control Board Surge Protection Modification..........4-6 Figure 5–1. F-42 DC/DC Converter Parts Location................5-7 List of Tables Table 5–1.
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Page 7: Description
DESCRIPTION 1 DESCRIPTION The F-42 DC/DC Converter is a completely transistorized power supply for use in train control systems. The converter basically consists of an electronically controlled pre-regulator and an inverter with rectified and filtered outputs. The unit is designed for use as a DC source of 32V at up to 7.5 amps on locomotive and car equipment for cab signals and/or intermittent inductive... -
Page 8: June
DESCRIPTION • Overvoltage Protection Overvoltage protection is provided by a crowbar circuit comprised of SCR-1 and printed circuit board CB3. The input voltage trip point is controlled by diode Dl which triggers the SCR-1 gate with input voltages between 95V and 105V and will blow fuse Fl. The crowbar circuit is immediately reset by the opened circuit. -
Page 9: Principles Of Operation
PRINCIPLES OF OPERATION 2 PRINCIPLES OF OPERATION As an aid in understanding the theory of operation, refer to the schematic diagram shown in Figure 4–1. 2.1 Input Filter Power is supplied through a filter consisting of inductors L1, and L2, and capacitors C1 and C2. Reverse polarity and inductive transient protection is provided by diode Dl. - Page 10 PRINCIPLES OF OPERATION SM 5924, Rev. 1, June 2009...
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Page 11: Installation
INSTALLATION 3 INSTALLATION 3.1 Mounting " " " The converter can be mounted either horizontally or vertically on 7-3/8 centers with four 3/8 bolts. 3.2 Electrical Connections Electrical connections are made to a plug connector mounted on the converter. Connecting cables should be twisted pairs to minimize pick-up between the input and output circuitry. - Page 12 INSTALLATION SM 5924, Rev. 1, June 2009...
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Page 13: Maintenance And Troubleshooting
Section 3.3. If improper output voltage or no output voltage is obtainable, troubleshoot the converter by following the steps in the Sections that follow. The schematic is shown in Figure 4–1. F-42 DC/DC Converter Schematic Diagram is shown in Figure 4–1. 4.2 Converter Regulator Section 1. -
Page 14: Figure 4-1. F-42 Dc/Dc Converter Schematic Diagram
Figure 4–1. F-42 DC/DC Converter Schematic Diagram SM 5924, Rev. 1, June 2009... -
Page 15: Converter Output Section
PARTS LIST 6. Place a scope (dc operation) across the base and emitter of Q1. Observe that not less than 1V and not more than 2V reverse bias is being applied during the off time of Q1. The bias circuit, consisting of diode D3 and leads 1S and 2S of transformer Tl, must be operational before loads can be applied to the converter. -
Page 16: C33-Over Voltage Control Board (N451120-4301)
circuitry) and is triggered ON and OFF as the voltage across C3 rises and falls. current limiting function is also provided to limit starting transients. 1. Inspect all soldered joints. 2. Attach a variable DC power supply to terminals 7 (+) and 4 (-). The maximum voltage required should not exceed 35 Volts, and the current should not exceed 0.1 amp. -
Page 17: Optional Surge Protection Modification
4.5.2 Optional Surge Protection Modification F-42 units manufactured prior to 1975 (serial numbers lower than XX75XX) may experience unusual fuse blowing problems when exposed to surge conditions. The optional modification described below can sometimes alleviate or reduce the number of fuses blown in this situation. -
Page 18: Figure 4-2. Cb3 Voltage Control Board Surge Protection Modification
∞ = Twisted Pair Figure 4–2. CB3 Voltage Control Board Surge Protection Modification SM 5924, Rev. 1, June 2009... -
Page 19: Parts List
PARTS LIST 5 PARTS LIST The parts for the F-42 DC/DC converter are listed in Table 5–1, Table 5–2and Table 5–3. The tables are keyed to Figure 5–1. Table 5–1. N451033-2901 Parts List ITEM NO. DESCRIPTION PART NO. TRANSFORMER,REACTOR N436560... - Page 20 ITEM NO. DESCRIPTION PART NO. CAPACITOR,4000 MFD J701059 BRKT CAPAC MOUNT J705089 BRKT CAPAC MOUNT J705090 SCREW,10-32X1/2 FL HD J052091 CAPACITOR,0.47 MFD J706152 HOLDER,FUSE HPF HPC J071890 FUSE,10A., 250V J710137 SCR-SST 8-32X1/2 PAN J5072950108 CONNECTOR,MS3102E J709214 GASKET,3102A 24 CONN J470057 SCR-SST 6-32X1/2 PAN J5072980108 TRANSISTOR,2N1558 GER PNP...
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Page 21: Table 5-2. N451033-2902 Parts List
PARTS LIST ITEM NO. DESCRIPTION PART NO. TAPE 2 IN SCOTCH 22 A773128 TAPE 3/4WX66 SCO BD J773078 PRTCTR-THREAD 1-1/2" J703231 Table 5–2. N451033-2902 Parts List ITEM NO. DESCRIPTION PAT NO. RADIATOR M4511204601 COLLAR INSULATING M436619 INSERT,RIVNUT #6 32 J792260 HEAT SINK N4511204403 HEAT SINK... -
Page 22: Table 5-4. N451033-2904 Parts List
Table 5–4. N451033-2904 Parts List ITEM NO. DESCRIPTION PART NO. TRANSFORMER,R CTOR N436560 TRANSFORMER, OUTPUT N436561 SCR-10-32X3/4 FLH SS J5252740112 WASHER,10 PLATE SST J4751200110 WSHR-SST LOCK NO 10 J4751210109 NUT-10-32 HEX SST J4802110105 TRANSFORMER DRIVER N4510390403 SCR 6-32X1-1/4 IN J525099 WSHR-SST PLATE NO 6 J4751200108 WASHER,SST LOCK NO 6... - Page 23 PARTS LIST ITEM NO. DESCRIPTION PART NO. CAP-CAPACITOR J709202 TERM-RING TONGUE J731458 CONN-PLUG 6 TERM J709174 CONN-PLUG 9 TERM J706768 TERM F 1189-TL J731355 SCR-6-32X3/4 FILH SS J522161 RECPT-FASTON PIDG J726219 RES-1.5K OHMS, 25 W. J7355190101 MYLAR-POLYEST FLM SH A772090 SCR-6-32X7/16 PAN HD J5072980107 COMPONENT,SILICONE RUBBER...
- Page 24 SM 5924, Rev. 1, June 2009...
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Page 25: Figure 5-1. F-42 Dc/Dc Converter Parts Location
PARTS LIST Figure 5–1. F-42 DC/DC Converter Parts Location SM 5924, Rev. 1, June 2009 5-7/5-8... -
Page 27: Rail Team And Technical Support
RAIL Team and Technical Support 6 RAIL TEAM AND TECHNICAL SUPPORT The Rapid Action Information Link Team (RAIL Team) is a group of experienced product and application engineers ready to assist you to resolve any technical issues concerning this product. Contact the RAIL Team in the United States at 1-800-652-7276 or by e-mail at railteam@ansaldo-sts.us. - Page 28 RAIL Team and Technical Support End of Manual SM 5924, Rev. 1, June 2009...
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