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User’s Manual
Model 642
Electromagnet
Power Supply
Lake Shore Cryotronics, Inc.
575 McCorkle Blvd.
Westerville, Ohio 43082-8888 USA
E-mail Addresses:
sales@lakeshore.com
service@lakeshore.com
Visit Our Website At:
www.lakeshore.com
Fax: (614) 891-1392
Telephone: (614) 891-2243
Methods and apparatus disclosed and described herein have been developed solely on company funds of Lake Shore Cryotronics, Inc. No government
or
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual LIMITED WARRANTY STATEMENT LIMITED WARRANTY STATEMENT (Continued) WARRANTY PERIOD: ONE (1) YEAR 9. EXCEPT TO THE EXTENT ALLOWED BY APPLICABLE LAW, THE TERMS OF THIS LIMITED WARRANTY STATEMENT DO 1. Lake Shore warrants that this Lake Shore product (the “Product”) will NOT EXCLUDE, RESTRICT OR MODIFY, AND ARE IN be free from defects in materials and workmanship for the Warranty ADDITION TO, THE MANDATORY STATUTORY RIGHTS
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual iii
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual TABLE OF CONTENTS Chapter/Section Title Page 1 INTRODUCTION .................................................................................................................................................... 1-1 1.0 GENERAL............................................................................................................................................. 1-1 1.1 DESCRIPTION..........................................
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual TABLE OF CONTENTS (Continued) Chapter/Section Title Page 4 OPERATION........................................................................................................................................................... 4-1 4.0 GENERAL............................................................................................................................................. 4-1 4.1 TURNING POWER ON....................
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual TABLE OF CONTENTS (Continued) Chapter/Section Title Page 5.1.4.2 Status Register Sets ...................................................................................................................... 5-8 5.1.4.2.1 Standard Event Status Register ................................................................................................. 5-8 5.1.4.2.2 Operation Event Register Set.....................................
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual TABLE OF CONTENTS (Continued) Chapter/Section Title Page 7.9 FIRMWARE REPLACEMENT............................................................................................................... 7-7 7.10 CONNECTOR AND CABLE DEFINITIONS ........................................................................................ 7-11 7.10.1 Analog I/O Connector .....................................................................
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual LIST OF ILLUSTRATIONS Figure No. Title Page 1-1 Model 642 Front Panel ............................................................................................................................. 1-2 2-1 A Typical Electromagnet........................................................................................................................... 2-1 2-2 Typical Magnet Water Hook-Up........................................
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual LIST OF TABLES Table No. Title Page 3-1 Rear Panel Connector Identification ......................................................................................................... 3-2 3-2 Voltage and Current Selection.................................................................................................................. 3-3 3-3 Current Capacity and Total Lead Lengths ...........................................
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual CHAPTER 1 INTRODUCTION 1.0 GENERAL This chapter provides an introduction to the Model 642 Electromagnet Power Supply. The Model 642 was designed and manufactured in the United States of America by Lake Shore Cryotronics, Inc. The Model 642 features include the following. • True 4-quadrant (bipolar) 70 A, 35 V output • 0.1 mA output setting resolution • Linear regulation minimizes noise and ripple to 0.007% of maximum
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Output Architecture (Continued) The Model 642 output architecture relies on low noise, linear input and output stages. The linear circuitry of the Model 642 permits operation with less electrical noise than switch-mode electromagnet power supplies. One key benefit of this architecture is CE compliance to the electromagnetic compatibility (EMC) directive, including the radiated emissions requirement. Output Programming Th
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Description (Continued) Interfaces The Model 642 includes IEEE-488 and RS-232C interfaces that provide access to operating data, stored parameters, and remote control of all front panel operated functions. A keypad lock-out feature is provided to prohibit any changes made from the front panel. The Model 642 can then be operated solely with the computer via the RS-232C or IEEE-488 interface. The Model 642 provides two anal
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Specifications (Continued) Output programming Internal current setting Resolution 0.1 mA (20 bit) Settling time 600 ms for 1% step to within 1 mA (of internal setting) Accuracy ±10 mA ±0.05% of setting Operation Keypad, computer interface Protection Programmable current setting limit Internal current ramp Ramp rate 0.1 mA/s to 99.999 A/s (compliance limited) Update rate 23.7 increments/s Ramp segments 5 Operation Ke
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Specifications (Continued) Interface IEEE-488.2 interface Features SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0, E1 Reading rate To 10 rdg/s Software support National Instruments LabVIEW™ driver (consult Lake Shore for availability) Serial interface Electrical format RS-232C Baud rates 9600, 19200, 38400, 57600 Reading rate To 10 rdg/s Connector 9-pin D-sub (DTE) Output current monitor Sensitivity 7 V/70 A Accuracy
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Specifications (Continued) General Line power Power 5500 VA max Voltage and current 200/208 VAC ±10%, 13 A/phase 220/230 VAC ±10%, 12 A/phase 380 VAC ±10%, 7 A/phase 400/415 VAC ±10%, 6.5 A/phase Protection Three phase thermal relay, with adjustable current setting Two class CC 1/4 A fuses Over-voltage lockout circuit Frequency 50 Hz or 60 Hz Configuration 3-phase delta Connector 4-pin terminal block Line vol
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Accessories included MAN-642 Model 642 user manual 6031 Two front handles 6032 Two rear handles 6051 Terminal block, 4 pin 6052 Terminal block, 8 pin 6252 15-pin D-sub mating connector, analog I/O 108-654 Strain relief bushing kit ----- Calibration certificate Accessories available 6201 1 m (3.3 ft) long IEEE-488 (GPIB) computer interface cable 6261 3 m (10 ft) magnet cable kit, AWG 4 6262 6 m (20 ft) magnet cable k
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Safety Summary (Continued) Do Not Substitute Parts Or Modify Instrument Do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to an authorized Lake Shore representative for service to ensure that safety features are maintained. Prevent Cooling Water Condensation Do not operate the power supply when cooling water temperature is at or lower than the dew point for lo
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual Safety Summary (Continued) 1.4 SAFETY SYMBOLS Number Symbol Publication Description 1 IEC 417, No. 5031 Direct current 2 IEC 417, NO. 5032 Alternating current 3 IEC 417, No. 5033 Both direct and alternating current 4 3 IEC 617-2, No. 02-02-06 Three-phase alternating current 5 IEC 417, No. 5017 Earth (ground) TERMINAL 6 IEC 417, No. 5019 PROTECTIVE CONDUCTOR TERMINAL 7 IEC 417, No. 5020 Frame or chassis ground 8 IEC 417, No. 5
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Lake Shore Model 642 Electromagnet Power Supply User’s Manual This Page Intentionally Left Blank 1-10 Introduction
