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York VSD 270 Operation Manual

Liquid-cooled optispeed compressor speed drive
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Liquid-Cooled OptiSpeed Compressor
Speed Drive
Models VSD 270, 292, 351, 385, 419, 424, 503, 608, 658, 704,
790, 868, 882, 917, 948, and 1055. Models LVD 270, 292, 351,
385, 419, 424, 503, 608, 658, 704, and 900.
Operation Manual
Issue Date: 2020-08-19
035-27337-100
Form Number: 160.00-O4 (820)
Supersedes: 160.00-O4 (220)

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Summary of Contents for York VSD 270

  • Page 1 Liquid-Cooled OptiSpeed Compressor Speed Drive Models VSD 270, 292, 351, 385, 419, 424, 503, 608, 658, 704, 790, 868, 882, 917, 948, and 1055. Models LVD 270, 292, 351, 385, 419, 424, 503, 608, 658, 704, and 900. 035-27337-100 Operation Manual Form Number: 160.00-O4 (820)
  • Page 2 Liquid-Cooled OptiSpeed Compressor Speed Drive...

  • Page 3: Table Of Contents

    Contents General safety guidelines..........................5 C o n t e n t s Safety symbols............................. 5 Changeability of this document......................6 Revision notes............................6 Associated literature........................... 6 Conditioned based maintenance...................... 7 VSD models............................8 LVD models............................13 General information............................ 15 OptiSpeed/Harmonic filter component overview.................
  • Page 4 Liquid-Cooled OptiSpeed Compressor Speed Drive...

  • Page 5: General Safety Guidelines

    General safety guidelines Important: Read before proceeding. This equipment is a relatively complicated apparatus. During rigging, installation, operation, maintenance, or service, individuals may be exposed to certain components or conditions including, but not limited to: heavy objects, refrigerants, materials under pressure, rotating components, and both high and low voltage.

  • Page 6: Changeability Of This Document

     WARNING External wiring, unless specified as an optional connection in the manufacturer’s product line, is not to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls and any external wiring must not be installed inside the micro panel. All wiring must be in accordance with Johnson Controls’...

  • Page 7: Conditioned Based Maintenance

    Traditional chiller maintenance is based upon assumed and generalized conditions. In lieu of the traditional maintenance program, a Johnson Controls YORK Conditioned Based Maintenance (CBM) program can be substituted. This CBM service plan is built around the specific needs for the chiller, operating conditions, and annualized impact realized by the chiller.

  • Page 8: Vsd Models

    The X in the part number below indicates which type of communications is used between the Micropanel and the OSCD: 1 = YORK Protocol, 7 = MODBUS Protocol, 8 = MODBUS with CPC, W = Asia (W in the 4th position taking place of the first hyphen in the part number).
  • Page 9 Table 1: VSD part numbers and descriptions Part number Model Description 60 Hz 50 Hz VSD292T-68 371-03700-X21 Factory Pack, YT Base Model VSD292K-68 371-03700-X22 Factory Pack, YK Base Model VSD292TFT-68 371-03700-X25 Factory Pack, YT Filter Model VSD292KFT-68 371-03700-X26 Factory Pack, YK Filter Model VSD292RT-68 371-03700-X31 Retrofit, YT Base Model...
  • Page 10 Table 1: VSD part numbers and descriptions Part number Model Description 60 Hz 50 Hz VSD419T-50 371-03789-X05 Factory Pack, YT Base Model VSD419K-50 371-03789-X06 Factory Pack, YK Base Model VSD419TFT-50 371-03789-X07 Factory Pack, YT Filter Model VSD419KFT-50 371-03789-X08 Factory Pack, YK Filter Model VSD419RT-50 371-03789-X15 Retrofit, YT Base Model...
  • Page 11 Table 1: VSD part numbers and descriptions Part number Model Description 60 Hz 50 Hz VSD503T-46 371-03789-X01 Factory Pack, YT Base Model VSD503K-46 371-03789-X02 Factory Pack, YK Base Model VSD503TFT-46 371-03789-X03 Factory Pack, YT Filter Model VSD503TFK-46 371-03789-X04 Factory Pack, YK Filter Model 503 HP 460 VAC VSD503RT-46...
  • Page 12 Table 1: VSD part numbers and descriptions Part number Model Description 60 Hz 50 Hz VSD790K-46 371-06982-X02 Factory Pack, YK Base Model VSD790KFT-46 371-06982-X04 Factory Pack, YK Filter Model 790 HP 460 VAC VSD790RK-46 371-06982-X12 Retrofit, YK Base Model VSD790RKFT-46 371-06982-X14 Retrofit, YK Filter Model VSD868K-50...

  • Page 13: Lvd Models

    LVD models Nomenclature, LVD models Figure 2: Nomenclature, LVD models L V D 0 5 0 3 N 0 1 K VIII XIII I - Drive Type VIII - Liquid DWP 15 = 150 psig 30 = 300 psig (historical models) * = Not yet defined IX - Input Connection D = Disconnect Switch...
  • Page 14 The X in the part number below indicates which type of communications is used between the Micropanel and the OSCD: 1 = YORK Protocol, 7 = MODBUS Protocol, 8 = MODBUS w/ CPC, W = Asia (4th position taking place of the first hyphen in the part number).

  • Page 15: General Information

    General information This instruction is to be used in conjunction with the Operation Instructions for YORK Centrifugal chillers furnished with an optional YORK OptiSpeed™ Compressor Drive (OSCD). ® OptiSpeed/Harmonic filter component overview OptiSpeed compressor drive 270, 292, 351, and 424 hp (low horsepower...
  • Page 16 mounted on the side of the Power Unit to provide a discharge path for the stored energy in the capacitors. The DC to AC inverter section of the OSCD serves to convert the DC voltage to AC voltage at the proper magnitude and frequency as commanded by the OSCD Logic board.

  • Page 17: Differences Between The G And W Designs

    The three-phase inductor provides some impedance for the filter to “work against”. It effectively limits the rate of change in current at the input to the filter to a reason- able level. The Filter Power Unit is the most complicated power component in the optional filter. Its purpose is to generate the harmonic currents required by the OSCD’s AC-to-DC converter so that these harmonic currents are not drawn from the AC line.
  • Page 18 The OSCD control system is composed of various components located within both the Control Center and the OSCD. In this way, the Control Center integrates with the OSCD. The OSCD system uses various microprocessors, which are linked together through a network of communications links.

  • Page 19: Vsd Adaptive Capacity Control

    OSCD related information is contained under the Motor and Compressor Screens. VSD adaptive capacity control The YORK OSCD uses a different approach to speed reduction compared to earlier variable speed products. There is no longer a pre-programmed surge map – the YORK adaptive system ®...
  • Page 20 stores the conditions surrounding the surge into memory, so that it can avoid the stored operating point anytime in the future. Early versions of the ACC software required that the drive always start and run up to full speed. ACC software starting with version C.ACC.01.04 applies anew slow ramp up of the drive speed.
  • Page 21 Stability limit adjustment Stability Limit Adjustment allows the system to properly function with larger amounts of temperature instability. Consult YORK Service to make this adjustment. Surge margin adjustment Surge Margin Adjustment allows the Service Technician to increase the speed of the drive for all mapped surge points.

  • Page 22: Optispeed Compressor Drive Details

    OptiSpeed compressor drive details System architecture Figure 3: OptiSpeed system architecture (Model VSD 351 without harmonic filter shown, similar to 270, 292, 424 models) Callout Description Callout Description Cooling coil Control transformer Cooling fans Input breaker Inductor Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 23 Figure 4: OptiSpeed system architecture (Model VSD 351 without harmonic filter shown, similar to 270, 292, 424 models) Callout Description Cooling fans Cooling coil Gate driver board IGBT DC bus isolator board SCR trigger board SCR/Diode module Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 24 Figure 5: OptiSpeed system architecture (Model LVD 419 shown, similar to 385, 503, 608, 658, 704, and 900 models) Callout Description Input breaker Inductor Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 25 Figure 6: OptiSpeed system architecture (Model LVD 419 shown, similar to 385, 503, 608, 658, 704, and 900 models) Callout Description Cooling coil Cooling fan SCR trigger board SCR/Diode module IGBT module Gate driver board Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 26 Figure 7: OptiSpeed system architecture (Model VSD 503 with harmonic filter shown, similar to 385, 419, 608 models) Callout Description Filter pre-charge contactor Filter supply contactor Direct current current transducers (DCCTs) Filter issues 50/60 Hz inverter (50 Hz applications only) Filter inductor Filter trap assembly Filter pre-charge resistors Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 27 Figure 8: OptiSpeed system architecture (Model VSD 503 with harmonic filter shown, similar to 385, 419, 608 models) Callout Description Line voltage isolation board Filter power module Filter power unit VSD power unit Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 28 Figure 9: OptiSpeed system architecture (Model VSD 790 shown, similar to 608, 658, and 704 models) Callout Description Callout Description Air coil Line inductor Filter supply contactor Filter inductor Filter DCCTs Circuit breaker Filter fuses Filter trap Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 29 Figure 10: OptiSpeed system architecture (Model VSD 790 shown, similar to 608, 658, and 704 models) Callout Description Filter line voltage isolation board Drive logic board Filter power unit Filter logic board SCR trigger board Service hole Filter input current transformer Drive power unit Drive output current transformer Cooling coil fan...
  • Page 30 Figure 11: OptiSpeed system architecture (Model 1055 shown, similar to 868, 882, 914, 917, and 948 models) Callout Description Callout Description Filter pre-charge contactor Filter inductor Air coil Line voltage isolation board Filter supply contactor Circuit breaker Line inductor Filter trap Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 31 Figure 12: OptiSpeed system architecture (Model 1055 shown, similar to 868, 882, 914, 917, and 948 models) Callout Description Filter power unit Service hole SCR trigger board Drive power unit Filter input current transformer In Figure 12, the drive and filter logic boards are mounted on the right door. Liquid-Cooled OptiSpeed Compressor Speed Drive...

  • Page 32: Printed Circuit Boards

    Printed circuit boards Figure 13: VSD logic board (located on panel door) Figure 14: SCR trigger board Liquid-Cooled OptiSpeed Compressor Speed Drive...
  • Page 33 Figure 15: Optional harmonic filter logic board (located on panel door) Figure 16: Gate driver board and power module (Model 351 shown, similar to 270, 292, 424 models) Liquid-Cooled OptiSpeed Compressor Speed Drive...

  • Page 34: Safety Shutdowns

    Safety shutdowns General information The Shutdowns are organized in alphabetical order based on the OptiView™ Control Center messages. The Microcomputer Control Center messages are also included under these headings. Whenever a Safety Shutdown is generated by the OSCD or Harmonic Filter Logic Board, a series of events occurs.

  • Page 35: Safety Shutdown Messages

    Safety shutdown messages Table 3: Safety shutdowns Message Description The OSCD logic board generates this shutdown. This shutdown will become active Motor or Starter – Current Imbalance when the highest of the three motor currents exceeds 80% of the programmed MOTOR OR STARTER –...
  • Page 36 Table 3: Safety shutdowns Message Description If the OSCD fails to meet the precharge criteria (refer to precharge faults), the precharge circuit waits for a period of 10 seconds before another precharge VSD - Precharge Lockout attempt. The unit’s cooling fans and coolant pump remain energized during this time period.

  • Page 37: Cycling Shutdowns

    Cycling shutdowns General information The Shutdowns are organized in alphabetical order based on the OptiView Control Center Panel messages. The Microcomputer Control Panel messages are also included under these headings. Whenever the OSCD or Harmonic Filter Logic Board generates a Cycling Shutdown, a series of events occurs.
  • Page 38 Table 4: Cycling shutdown message Message Description This shutdown is generated by the OSCD logic board. If any one phase of motor current as measured by the Output Current Transformers exceeds a threshold. Refer to the chart below for the shutdown threshold value. Drive hp rating Threshold shutdown value 270, 292, 351, 424...
  • Page 39 Table 4: Cycling shutdown message Message Description This fault has two different timing events. First, the DC Bus voltage must be equal to or greater than 50 VDC for 460 VAC input voltage, 41 VDC for 380, 400 and 415 VSD - Precharge - Low DC Bus Voltage VAC input voltage, or 60 VDC for 575 VAC input voltage, 4 seconds after pre-charge has begun.
  • Page 40 Table 4: Cycling shutdown message Message Description During initialization, with no current flowing through the Direct Current Current Harmonic Filter - DC Current Transducers (DCCTs), the DCCT’s output voltages are measured and compared Transformer 1 (or 2) with a preset limit in the harmonic filter logic board. If the measured values exceed the preset limits, the DCCTs are presumed to be bad and this shutdown FILTER DCCT 1 (OR 2) ERROR will be generated.
  • Page 41 Table 4: Cycling shutdown message Message Description Two minimum voltage thresholds must be met in order to complete the precharge cycle. The first occurs 1/10th of a second after pre-charge is initiated and the other Harmonic Filter - Precharge - Low DC occurs 5 seconds after precharge is initiated.

  • Page 42: Warning Messages

    Warning messages General information A WARNING message indicates that the operation of the OSCD or the Harmonic Filter is affected in some manner, but the OSCD is still functioning. Warning messages Table 5: Warning messages Warning Description This message is displayed when the Pre-Rotation Vanes are not calibrated or have Warning - Vanes Uncalibrated - Fixed failed to calibrate, and the OSCD is enabled.

  • Page 43: Vsd Frequently Asked Questions

    VSD frequently asked questions Why doesn’t the measured input amps of the OSCD agree with the rated FLA? The input current to the OSCD may be considerably lower, compared to the output current. This is due to the power factor at the input to the OSCD being greater than 0.95, and nearly unity when the Harmonic Filter option is included.
  • Page 44 • Vane stroke is too large. Remove the sensitivity jumper in the Micro Computer Control Center, or program a lower sensitivity on the OptiView Control Center. Also, check the vane motor to see that the fullest possible stroke is being used. Moving the vane motor arm pivot point closer to center, and extending the degrees of travel by adjusting the internal end stops, will reduce the amount of vane action for the same period of operation.

  • Page 45: Unit Conversion

    Unit conversion The following factors can be used to convert from English to the most common SI metric values. Table 6: SI metric conversion Measurement Multiply English unit By factor To obtain metric unit Capacity Tons Refrigerant Effect (ton) 3.516 Kilowatts (kW) Power Horsepower...
  • Page 46 © 2020 Johnson Controls. 5000 Renaissance Drive, New Freedom, York, PA 17349, USA. Subject to change without notice. All rights reserved.

This manual is also suitable for:

Vsd 292Vsd 351Vsd 385Vsd 419Vsd 424Vsd 503 ... Show all

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