Johnson Controls York MV VSD Operation Manual

Medium voltage variable speed drive

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Medium Voltage Variable Speed Drive

Operation Guide

Medium Voltage 500 hp to 3,000 hp, 2,300 V, 3,300 V,

4,160 V, and 6,600 V, 60 Hz, 3,300 V and 6,600 V, 50 Hz

Variable Speed Drives for YK, YD, YK-EP, and YK-CP Chiller

Applications

Operation Guide

Issue Date: 2025-05-15

Form number: 160.00-O6 (525)

Supersedes: 160.00-O6 (124)

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Summary of Contents for Johnson Controls York MV VSD

Page 1 4,160 V, and 6,600 V, 60 Hz, 3,300 V and 6,600 V, 50 Hz Variable Speed Drives for YK, YD, YK-EP, and YK-CP Chiller Applications Operation Guide Form number: 160.00-O6 (525) Issue Date: 2025-05-15 Supersedes: 160.00-O6 (124) © 2025 Johnson Controls. All rights reserved.
Page 3 Confirmation of wiring................................ 30 Device and mechanism check............................30 Electrical checks................................... 30 Initial energization................................31 Start-up and test.................................. 31 MV VSD lockout/tagout procedure............................32 Unit conversion..................................35 Temperature..................................35 Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 5 Note: Highlights additional information useful to the technician in completing the work being performed correctly. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 6 ® in this document is subject to change without notice. Johnson Controls makes no commitment to update or provide current information automatically to the manual or product owner. Updated manuals, if applicable, can be obtained by contacting the nearest Johnson Controls Service office or accessing the Johnson Controls Knowledge Exchange website at https://docs.johnsoncontrols.com/chillers/.
Page 7 This CBM service plan is built around the specific needs for the chiller, operating conditions, and annualized impact realized by the chiller. Your local Johnson Controls branch can propose a customized Planned Service Agreement that leverages real time and historical data, delivering performance reporting, corrective actions required, and data enabled guidance for optimal operation and life-cycle assurance.
Page 8 Environmental: 32°F to 104°F (0°C to 40°C), maximum 95% humidity, non-condensing, 5,000 ft (1,524 m) altitude. Vibration: 0.5 G or less at 10 Hz to 60 Hz. Enclosure: NEMA 1, IP20, IEC-529. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 9 NFPA 70E. Non-qualified personnel must not be present within this boundary during energizing, de-energizing, or energized testing,even with cabinet doors closed, on this starter. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 10 Theory of operation Theory of operation The YORK MV VSD is an integrated package that works together with the YORK OptiView control panel to provide the optimum voltage and frequency to the chiller motor, maintaining energy usage at the lowest possible level for the given chiller conditions.
Page 11 The phase shift between each of the rectifiers causes cancellation of harmonic frequencies. The YORK MV VSD meets the IEEE-519 harmonic distortion guidelines without need for any addition of extra filters or hardware.
Page 13 System architecture System architecture Figure 5: Transformer assembly Figure 6: Pre-charge reactor Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 14 Callout Description Callout Description Current feedback External I/O board Phase detection Logic board with Modbus interface, gate driver board, and extra external I/O board Power supply Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 15 General The YORK MV VSD is a floor-standing, air-cooled, self-contained motor drive for 2,300 V, 3,300 V, 4,160 V, and 6,600 V three-phase applications. The cabinet is NEMA 1 rated, and designed for temperatures from 32°F to 104°F (0°C to 40°C), with relative humidity of 20% to 95%, non-condensing.
Page 16 MV VSD potential transformer (10PT1 and 10PT2), and to the in-line and bypass contactors. Figure 9: E-type main fuses Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 18 An electrical interlock is provided to ensure that all load is disconnected from the control power transformer secondary winding before the power isolation switch can be opened or closed. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 19 0.5 s. When the transformer is energized through these reactors, a second vacuum contactor closes to shunt around these reactors, permitting full voltage and current to be applied to the transformer primary. Figure 13: Pre-charge reactor Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 20 VAC at the output of the drive. Isolated supplies permit the drive to switch the motor output between positive and negative as is done in low voltage drives, and also permits the drive to switch between positive and negative buses Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 21 These modules are very heavy and lifting hardware is necessary to lower the module to the floor. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 22 Do not open this subpanel at any time unless the MV VSD has had power removed and locked out. Additionally, 15 min must elapse after powering down to allow time for the internal capacitors to discharge before opening this panel. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 23 12 VAC control power healthy signal to the gate driver board (GSD) at connector CN5 on the GSD. Note that each of these small transformers has an onboard fuse wired in series with its primary. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 24 They serve to protect the devices on the load side of the breaker against voltage transients. Across the Bottom of the Low Voltage Section are four relays: Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 25 The logic is the heart of the MV VSD. Non-volatile memory holds the program which is loaded into RAM memory upon power up of the MV VSD. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 26 MV VSD. Inputs to this board are 24 VDC logic level. All outputs are controlled through external relays (for example BLR, FLT, INPC) that are operated by 24 VDC logic outputs from this board. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 27 There are control signals present in these cables that are not compatible with Ethernet communications that could destroy the PC. The display/keypad has several characteristics defined as follows: Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 28 Operating the interlock pushbutton results in an inverter gate driver block and free-run deceleration of the load. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 29 If there is an appreciable accumulation of dust or dirt, the enclosure must be cleaned using a brush, vacuum cleaner, or a clean lint free brush. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 30 Calibrate the light or buzzer, or both, used to indicate breakdown to indicate failure with an output current between 1.5 mA and 2.0 mA per 1,000 V applied. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 31 Before releasing the drive system for regular operation after installation, the system must be adjusted and tested by qualified YORK/Johnson Controls personnel. This start-up labor is included in the sale of each MV VSD, to ensure reliable and safe performance. It is important to make arrangements for such a check and that time is allowed for Medium Voltage Variable Speed Drive Operation Guide ©...
Page 32 2. Disconnection of upstream power: Ask an on-site electrician to de-energize power to the VSD. This is done at the upstream motor control center or power distribution panel. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 33 Visually inspect all other hardware in this cabinet section, and if something does not look correct, close the cabinet and contact your supervisor before proceeding. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 34 When all of these points are confirmed to be de-energized, the MV VSD is now locked out and the unit has been verified that it is no longer energized. Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 35 To convert a temperature range (that is, a range of 10°F) from Fahrenheit to Celsius, multiply by 5/9 or 0.5556. Example: 10.0°F range x 0.5556 = 5.6 °C range Medium Voltage Variable Speed Drive Operation Guide © 2025 Johnson Controls. All rights reserved.
Page 36 Unit conversion © 2025 Johnson Controls. 5000 Renaissance Drive, New Freedom, York, PA 17349, USA. Subject to change without notice. All rights reserved. © 2025 Johnson Controls. All rights reserved.

Johnson Controls York MV VSD Operation Manual

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