GEH-6639 (Draft) GE Industrial Systems CS300 Half Controlled Power Supply for Inverter DC-Link User‘s Guide
GEH-6639 © 2001 General Electric Company, USA. All rights reserved. These instructions do not purport to cover all details or variations in equipment, nor to provide every possible contingency to be met during installation, operation, and maintenance. If further information is desired or if particular problems arise that are not covered sufficiently for the purchaser’s purpose, the matter should be referred to GE Industrial Systems, Salem, Virginia, USA.
CS300 SAFETY SYMBOL LEGEND / LÉGENDE DES SIGNES DE SÉCURITÉ WARNING! Commands attention to an operating procedure, practice, condition, or statement which, if not strictly observed, could result in personal injury or death. Attire l’attention sur les modes d’utilisation et les procédés et conditions d’exploitation qui, en cas d’inobservation, pourraient entraîner des blessures corporelles ou la mort.
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CS300 TABLE OF CONTENTS SAFETY SYMBOL LEGEND / LÉGENDE DES SIGNES DE SÉCURITÉ ...................... 3 CHAPTER 1 - SAFETY PRECAUTIONS .................................................................... 7 CHAPTER 2 - COMPONENT IDENTIFICATION AND SPECIFICATION ................. 11 2.1 GENERAL DESCRIPTION ..................................................................................................... 11 2.2 POWER SUPPLY ....................................................................................
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CS300 Chapter 1 - SAFETY PRECAUTIONS NOTE! The terms “Inverter”, “Controller” and “Drive” are sometimes used interchangably throughout the industry. We will use the term “Drive” in this document Les mots “Inverter”, “Controller” et “Drive” sont interchangeables dans le domaine industriel. Nous utiliserons dans ce manuel seulement le mot “Drive”.
GEH-6639 WARNING! - FIRE AND EXPLOSION HAZARD / ATTENTION! – RISQUE D’INCENDIES ET D’EXPLOSIONS: Fires or explosions might result from mounting Drives in hazardous areas such as locations where flammable or combustible vapors or dusts are present. Drives should be installed away from hazardous areas, even if used with motors suitable for use in these locations.
CS300 - - - - - - Protect the device from disallowed environmental conditions (temperature, humidity, shock etc.) The electrical commissioning should only be carried out by qualified personnel, who are also responsible for the provision of a suitable ground connection and a protected power supply feeder in accordance with the local and national regulations. The motor must be protected against overloads. No dielectric tests should be carried out on parts of the frequency inverter.
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CS300 Chapter 2 - COMPONENT IDENTIFICATION AND SPECIFICATION 2.1 GENERAL DESCRIPTION CS300 is a half-controlled three phase AC/DC converter for supplying DC link voltage to a series of AC Drives, with C and D terminals parallel connected. The precharge of the drive capacitors (time setting set via dip-switches) is done by partializing the mains voltage via a thyristors bridge. A diagnostic circuit allows detection of a mains power supply dip for system use.
GEH-6639 2.
CS300 2.5.
GEH-6639 2.6 CONVERTER SIZE SELECTION Within the specified voltage field, the CS300 converter supplies the same rated direct current independently of the voltage itself. The increase of the output voltage causes an increasing in the transferred power, whereas inverters are devices with a typically constant transferred power (the supplied current decreases with the increasing of the output voltage).
CS300 2.6.
GEH-6639 Chapter 3 - SELECTION OF THE CS300 CONVERTER The CS300 converter has to be chosen so that the sum of the inverter DC-link currents, both for class 1 and 2, is lower or equal to the corresponding ones stated in chapter 2.6.1. 3.1 DIP-SWITCHES AND JUMPER On R-SM3-L card S1.1-4 S2.1-3 S3.1-4 S4 - S5 CV Selection of the delay for thyristor disabling during mains dip. Selection of the undervoltage threshold.
CS300 1) 2 1 R ω= -( ) L* C 2* L Having as a unit of measure the “L” inductance in Henry, the “C” capacitor in Farad and the “R” resistance in Ohm, according to the above mentioned data: ω = 1331.21 rad/S 2) α= from which: R 2* L α = 357.14 3) tM = from which: π 2* ω tM = 0.00117 s ( tM states the time needed by the current to reach its maximum value ) 4) the peak current can be calculated with the following formula: IP=( from which : V )* eα * t M ω* L IP = 572.
GEH-6639 S1.1 ON OFF OFF OFF OFF OFF OFF OFF Delay in the thyristor disabling 1.1mS +/- 10% 2.2mS +/- 10% 3.3mS +/- 10% 4.4mS +/- 10% 5.5mS +/- 10% 6.6mS +/- 10% 7.7mS +/- 10% S1.2 OFF ON ON ON OFF OFF OFF OFF S1.3 OFF ON OFF OFF ON ON OFF OFF S1.4 OFF OFF ON OFF ON OFF ON OFF cs080 From the above table, considering the example, a delay of 1.1mS is selected by setting: S1.1 OFF - S1.2 ON - S1.3 ON - S1.4 OFF. NOTE! With S1.1 ON the delay circuit for the thyristors switching off is disabled.
CS300 1) Set all the switches in off position (18-seconds ramp time), use a current probe able to detect a current peak ≤10mS between the C or D terminal of the DC-LINK. 2) At this point read the measuring of the maximum peak current present on the DC-LINK during the precharging phase. 3) If the measured peak current is much lower than twice the value of the CS300 rated current, it is possible to select the switch for a lower ramp time (SW3.4 - 8- second ramp time). Go back to point 2.
GEH-6639 Chapter 4 - CONTROL DESCRIPTION 4.1 OK RELAY The OK relay has a normally open contact which close at the end of the precharging phase if no alarm condition is present (overtemperature, power supply on the regulation card +/-15V). The contact is closed during the normal functioning of the device and also during an undervoltage situation.
CS300 Chapter 5 - CONVERTER DIMENSIONS E C F D B Form 1 A E C F B Form 2 D A Converter 6KCS3185-480 6KCS3280-480 6KCS3420-480 6KCS3650-480 6KCS310H-480 6KCS315H-480 Form 1 2 A B C D E F Weight inch [mm] inch [mm] inch [mm] inch [mm] inch [mm] Ø lbs [kg] 12.22 [311] 12.22 [311] 12.22 [311] 12.22 [311] 20.63 [525] 21.65 [551] 15.25 [388] 15.25 [388] 15.25 [388] 15.25 [388] 21.77 [554] 26.96 [686] 10.61 [270] 10.61 [270] 10.61 [270] 10.61 [270] 13.48 [343] 14.93 [380] 14.
GEH-6639 Chapter 6 - CONVERTER OPERATION 6.
CS300 6.2 SIGNAL DIAGRAM AC CONTACTOR U.V.W PRECHARGE ENABLE DC-LINK VOLTAGE PRECHARGE TIME OK RELAY Figure A AC POWER SUPPLY.
GEH-6639 6.3 COMMON BUS MULTI-INVERTER SYSTEM _ DC BUS + * C D C AC Drive M D AC Drive E C C D D AC Drive External braking resistor “Rbr” AC mains contactor External fuses OPTION AC MAINS INPUT * : Fuses for cables protection.
CS300 Chapter 7 - REPLACEMENT PARTS Catalog No.
GEH-6639 Chapter 8 - WARRANTY PARTS AND SERVICE The purpose of this section is to provide specific instructions to the user of the standard drive referenced in this book regarding warranty administration and how to obtain assistance on both in-warranty and out-ofwarranty equipment.
CS300 Notes: ——————— Half controlled power supply for inverter DC-Link ———————— 27
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