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OZTEK OZPCS-EP40 User Manual

40kw energy storage power conversion system
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40kW Energy Storage
Power Conversion System
USER MANUAL
UM-0073
11 Continental Boulevard, Merrimack, NH 03054
603. 546. 0090
OztekCorp.com

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Summary of Contents for OZTEK OZPCS-EP40

  • Page 1 40kW Energy Storage Power Conversion System USER MANUAL UM-0073 11 Continental Boulevard, Merrimack, NH 03054 603. 546. 0090 OztekCorp.com...
  • Page 2 About Oztek Oztek Corp. is a proven innovator of power, control, and instrumentation solutions for the most demanding industrial applications. Oztek products include variable motor drives, grid tie inverters, frequency converters, standalone inverters, DC/DC converters, and DSP based control boards for power control applications.
  • Page 3 SAVE THESE INSTRUCTIONS This manual contains important instructions for the OZpcs-EP40 power conversion system (PCS), that shall be followed during installation and maintenance of the PCS. The OZpcs-EP40 is designed and tested according to international safety requirements, but as with all electrical and electronic equipment, certain precautions must be observed when installing and/or operating the PCS.

  • Page 5: Table Of Contents

    Table of Contents Table of Contents 1. Introduction ........................2 Referenced Documents ....................... 2 General Information ........................2 General Safety ..........................3 Orderable Part Numbers ......................4 2. Specifications ........................4 Reliability ............................. 4 Electrical Specifications ....................... 5 Environmental Specifications ...................... 6 Mechanical Specifications ......................
  • Page 6 High Inverter Current – Phase A, B, C ................... 59 7.1.2 High Grid Voltage ........................59 7.1.3 PLL Not Locked ........................59 7.1.4 Loss of Phase ......................... 60 7.1.5 AC Current Limit ........................60 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 7 Table of Contents 7.1.6 DC Power Limit ........................60 7.1.7 AC Power Limit ........................60 7.1.8 AC Current Overload ......................60 7.1.9 Grid Out of Tolerance (OOT) ....................61 7.1.10 Resume – Delay ........................61 7.1.11 Island Detected ........................61 7.1.12 High DC Current........................
  • Page 8 12.3.9 SunSpec Model 706 Registers – DER Volt-Watt ..............109 12.3.10 SunSpec Model 707 Registers – DER Low Voltage Trip (LVRT) ........... 111 12.3.11 SunSpec Model 708 Registers – DER High Voltage Trip (HVRT) .......... 112 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 9 12.3.21 Oztek Extension Model 64304 Registers – Firmware Update ..........133 12.3.22 Oztek Extension Model 64305 Registers – Datalogging ............134 12.3.23 Oztek Extension Model 64308 Registers – Grid Forming Configuration & Control .... 139 12.3.24 SunSpec Model 0xFFFF Registers – End Model ..............141 13.
  • Page 10 Figure 32 - Island Mode Capable System Block Diagram ................49 Figure 33 - PCS Control State Machine ....................... 54 Figure 34 - RTU Message Frame (PDU) Format ..................87 Figure 35 - Oztek Power Studio GUI ...................... 144 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 11 Table of Contents Table of Tables Table 1 - Revision History ..........................1 Table 2 - Document Acronyms ........................2 Table 3 - LED Functions - Normal Operation ....................24 Table 4 - LED Functions - Bootloader Operation ..................24 Table 5 - I/O D-Sub 15 Pinout ........................

  • Page 13: Table 1 - Revision History

    Table 1 - Revision History Date Description of Change Author • Initial Release Zendzian Publication UM-0073...

  • Page 14: Introduction

    This document is intended to provide detailed specifications and instructions on how to properly install and operate an OZpcs-EP40 Energy Storage Power Conversion System (PCS). To provide for safe installation and operation of the equipment, please read the safety guidelines at the beginning of this manual and follow the procedures outlined before connecting power to the PCS.

  • Page 15: General Safety

    Introduction Acronym Full Text Equivalent No Operation Out of Tolerance Point of Common Coupling Power Conversion System Relative Humidity Root Mean Square Real Time Clock Remote Terminal Unit Static Transfer Switch Total Harmonic Distortion General Safety DANGER Power inverters are typically connected to hazardous voltages. When servicing an inverter, there may be exposed terminals at or above line potential, as well as residual charge in place for some time after the removal of the input source.

  • Page 16: Orderable Part Numbers

    PCS, in violation of warranty terms, thereby terminating any remaining warranty otherwise in effect. Orderable Part Numbers The OZpcs-EP40 is available in a single hardware configuration identified using the orderable part number shown below. Figure 1 - Part Number Guide...

  • Page 17: Electrical Specifications

    Specifications Electrical Specifications DC Input DC Input Voltage Range 330 to 820 V, Derated below 550 V, see section 2.8 DC Input Current 75 A maximum (operating) The DC input does not include fuse protection. It is Maximum Overload DC Input expected that the customer provides a means to limit the Current current to 100 Amps...

  • Page 18: Environmental Specifications

    0 - 85% RH Operating Altitude 1,000 m No Derating, >1,000 m Derated Pollution Degree 2 (IEC 1010-1) Ingress Protection Rating NEMA3X/IP54 Acoustic Noise dBA Max in all directions, horizontal distance of 3ft OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 19: Mechanical Specifications

    Specifications Mechanical Specifications Cooling Forced air cooled by internal fan. Weight 113 lb Vibration MIL-810E, method 514.4 test condition I-3.3.1 Shock Less than 20G, half sine, 11mS, unpacked Seismic 1G seismic zone (IEEE 693 High Seismic) with seismic spectra of 0.5G Accuracies The following accuracies apply to both 480 V and 208 V...

  • Page 20: Mechanical Dimensions

    Specifications Mechanical Dimensions Figure 2 - Mechanical Outline - Front & Side View OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 21: Figure 3 - Mechanical Outline - Rear View

    Specifications Figure 3 - Mechanical Outline - Rear View AC Cable Entry Signal Cable Entry DC Cable Entry Figure 4 - Mechanical Outline - Bottom View Publication UM-0073...

  • Page 22: Temperature Based Power Derating

    Operating the PCS for longer than 120 hours in the yellow regions shown below will shorten the product warranty as described above. Continuously operating the PCS in the red regions shown below will void the product warranty. Figure 5 - Temperature Derating Curve OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 23: Dc Input Voltage Based Power Derating

    Specifications The PCS monitors the air temperature inside the enclosure. Accumulated operating time across various temperature ranges is recorded as described in the Datalogging section of this document (Section 10.3.1). DC Input Voltage Based Power Derating The chart below illustrates the power derating at low DC input voltages based on the maximum DC current rating.

  • Page 24: Ac Voltage Based Power Derating

    In this mode, it is the user’s responsibility to keep the load power below the available power for the desired range of acceptable AC line voltages. Failure to do so may result in AC over current faults. Figure 7 - AC Line Voltage Derating OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 25: Elevation Based Power Derating

    Specifications 2.10 Elevation Based Power Derating Figure 8 - Elevation Derating Curves 2.11 Regulatory Specifications 2.11.1 Listings (See Appendix A) Safety UL1741:2021 Ed. 3, CSA C22.2#107.1:2016 Ed. 4, IEC 62477-1 FCC Part 15, Subpart B, Class A, EN61000-6-2, EN61000-6-4 Utility UL1741:2021 Ed.

  • Page 26: Unpacking And Inspection

    Immediately seek assistance from the freight carrier for any visible signs that the packaging or product has been damaged. If it is necessary to send the OZpcs-EP40 back, use the original packaging.

  • Page 27: Installation

    Installation CAUTION Do not attempt to lift or carry the OZpcs-EP40 by the exhaust hood on the top of the converter. Attempting to lift or carry the unit in this manner may result in injury to the handler and damage to the unit.

  • Page 28: Spacing

    Figure 11 - Required Clearances 4.1.3 Mounting a. Mark the four holes onto the bearing surface for attaching the French cleat bracket as shown in Figure 12. Figure 12 - French Cleat Bracket Mounting Hole Locations OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 29: Figure 13 - Secure The Mounting Bracket To The Wall

    It is highly recommended to have at least 2 people mount the PCS due to the weight of the converter. Do not attempt to lift the OZpcs-EP40 by the exhaust hood on the top of the converter as this may result in injury to the handler and damage to the unit.

  • Page 30: Figure 14 - Lift The Pcs Onto The Mounting Bracket And Secure With Locking Bolts

    Figure 14. Open the front door and install the provided locking bolts (1) (Oztek p/n 920565) through the back of the cabinet and tighten to 4.3 Figure 14 – Lift the PCS onto the Mounting Bracket and Secure with Locking Bolts...

  • Page 31: Electrical

    All installations must conform with the laws, regulations, codes, and standards applicable in the jurisdiction of installation. Oztek assumes no responsibility for the compliance or noncompliance with such laws or codes in connection with the installation of the PCS.

  • Page 32: Electrical Conduit

    Avoid contact with electrical terminals. De-Energize all sources before servicing. CAUTION The OZpcs-EP40 does not include overcurrent protection on the DC input. The customer is required to provide adequate overcurrent protection external to the PCS. CAUTION The DC inputs are intended to float and must not be referenced to earth ground. Referencing either DC terminal to ground will void the warranty and may cause permanent damage to the OZpcs-EP40.

  • Page 33: Ac Connection

    Avoid contact with electrical terminals. De-Energize all sources before servicing. CAUTION The OZpcs-EP40 does not include overcurrent protection on the AC input. The customer is required to provide adequate external branch level protection. The following AC branch circuit current ratings are recommended:...

  • Page 34: Ground Connection

    Figure 17 - AC Terminal Block Connections 4.2.4 Ground Connection An earth ground connection should be made to the M6 threaded stud located on the metal enclosure wall below the AC terminal block, see Figure 15. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 35: Low Voltage I/O

    Installation 4.2.5 Low Voltage I/O Figure 18 - Low Voltage I/O Connections All isolated, low voltage I/O signals are provided on a 14-pin, COMBICON connector (J1). A second connector (J2) with an identical pin-out is provided to allow for daisy-chaining paralleled units, as well as terminating the Modbus data link.

  • Page 36: Configuration

    4.2.6 Configuration The OZpcs-EP40 is shipped from the factory configured for a nominal line voltage of 480 V a frequency of 60 Hz. If the OZpcs-EP40 is intended to be used with line voltages other than 480 V , 60Hz, the user must configure REG 40254 – AC Voltage Nominal Rating and REG 41818 –...

  • Page 37: Low Voltage I/O

    Interface Color Label Location Meaning Yellow OPERATING Front Panel Rapid Blink: Data exchange with Host in progress FAULT Front Panel On Solid: Bootloader error, e.g., CRC error Yellow SERVICE Front Panel Low Voltage I/O All isolated, low voltage I/O signals are provided on two Phoenix Contact COMBICON, 14 pin, male pin headers.

  • Page 38: Inputs

    5 up to 32V as illustrated in Figure 21. Note that the Bias Enable input has a slightly different interface and requires a 24V input to work. Figure 21 - Discrete Input Interface OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 39: Emergency Stop

    Interface 5.2.2.1 Emergency Stop The Emergency Stop (ESTOP) input provides a hardware only enable path. For the PCS to process power, i.e., DC/DC and inverter contactors closed, this input must remain asserted. The signal provides a direct hardware enable path to both the input and output contactors. The PCS will report an ESTOP fault whenever this input isn’t asserted, 5.2.2.2 Bias On/Off...

  • Page 40: Table 6 - Alarm Output Mask Registers

    For example, setting Register 41883 and 41885 to 0xFFFFFFFF enables any PCS fault or warning to drive Alarm Output 1. Similarly, setting Register 41887 and 41889 to 0xFFFFFFFF enables any PCS fault or warning to drive Alarm Output 2. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 41: Operation

    Operation Operation Communication and I/O Bias Supply Controller Precharge Neutral Filter Filter Input Output Precharge Figure 23 - System Block Diagram Bias Power The PCS incorporates an internal bias supply that derives the necessary working voltages from the high voltage DC input. The bias supply is controlled with the “Bias On/Off” discrete input. When this input is asserted, the bias supply is enabled and drawing power from the DC input.

  • Page 42: Initiating Grid Tie Operation

    When REG 40294 – Permit Enter Service is set to a “1”, the PCS may connect to the grid and control active and reactive power. When this register is set to a “0”, the PCS is not allowed to OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 43: Active Power Control

    Operation operate into the grid and will instead wait in the Service Disabled state with the AC and DC contactors open until service is eventually enabled. Note that this is a non-volatile register and the latest value written will persist between power cycles. If service is permitted, the grid voltage and frequency must be within the ranges configured in REG 40295-40299 –...

  • Page 44: Limit Maximum Active Power

    The Volt-Watt curve is created using the registers found in SunSpec Model 706, which is summarized in section 12.3.9. See section 12.2, “SunSpec Curve-Based Register Models” for general information on creating and modifying curves. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 45: Figure 25 - Volt/Watt Configuration

    Operation Figure 25 illustrates a basic Volt-Watt curve. At the endpoints, to the left of the first voltage point and to the right of the last voltage point, the power level remains constant (i.e., flat lines). The voltage points are defined as a percentage of the nominal grid voltage configured in REG 40278.

  • Page 46: Frequency/Watt Control

    In both cases, when the frequency begins to shift back towards F , the adjusted active power command will re-trace the same curve until the frequency returns to within the prescribed deadband limits. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 47: Figure 26 - Frequency/Watt Configuration

    Operation Figure 26 illustrates the basic Frequency-Watt behavior described above. Note that this diagram shows examples based on five different pre-disturbance active power setpoints, ranging from 100%, 50%, 0%, -50%, and -100%. It should be noted that P is meant to be set below the lowest active power level that the user anticipates commanding.

  • Page 48: Prioritization Of Active Power Limiting Functions

    6.2.4 Reactive Power Control The PCS provides the following methods for controlling reactive power to or from the grid: • Constant Reactive Power – reactive power is directly controlled from a user-specified setpoint. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 49: Constant Reactive Power Control

    Operation • Power Factor Control – reactive power is controlled based on the user-specified power factor and the present active power output. • Volt/VAR Control – reactive power is controlled as a function of the measured grid voltage. • Watt/VAR Control – reactive power is controlled as a function of the active power output.

  • Page 50: Power Factor Control

    , REG 40271) both will be proportionally reduced such that the resulting combined apparent power is VA , the desired power factor is maintained, and the AC Power Limit warning will be set. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 51: Volt/Var Control

    Operation 6.2.4.3 Volt/VAR Control To support grid voltage stabilization during over-voltage and under-voltage conditions, the PCS may be optionally configured to automatically generate reactive power commands based on the average of the three grid voltages measured at the PCS terminals. This behavior is implemented using a configurable array of up to ten Volt-VAR points that specify the desired piecewise linear characteristic.

  • Page 52: Watt/Var Control

    This behavior is implemented using a configurable array of up to ten Watt-VAR points that specify the desired piecewise linear characteristic. The Watt-VAR curve is created using the registers found in SunSpec Model 712, which is summarized in section 12.3.15. See section OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 53: Figure 28 - Watt/Var Configuration

    Operation 12.2, “SunSpec Curve-Based Register Models” for general information on creating and modifying curves. Figure 28 illustrates a basic Watt-VAR curve. At the endpoints, to the left of the first active power point and to the right of the last active power point, the reactive power level remains constant (i.e., flat lines).

  • Page 54: Output Power And Current Limiting

    PCS when operating under these circumstances, a droop control function is used to reduce the controller gain as the negative sequence load current increases. This droop gain is configured in REG 41835 – Voltage Unbalance Droop Gain. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 55: Negative Sequence Current Limit And Priority

    Operation When enabling unbalance voltage compensation Oztek recommends using the default control and droop gains. If necessary, contact Oztek technical support to discuss systems that require changes from these default settings. 6.2.6.2 Negative Sequence Current Limit and Priority When injecting both positive sequence current (i.e., from user power commands) and negative...

  • Page 56: Low/High Voltage Ride Through

    The Low/High Voltage Ride Through (L/HVRT) “must trip” and “momentary cessation” curves are implemented using configurable arrays of X-Y points to allow the user to define multiple voltage/duration boundary conditions. Two different sets of curves are provided, one for low OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 57: Table 8 - Ieee 1547-2018 Default L/Hvrt Trip Settings

    Operation voltage conditions and one for high voltage conditions. These curves are defined using the registers found in the SunSpec “DER Low/High Voltage Trip” Models 707 and 708, respectively (see sections 12.3.10 and 12.3.11). See section 12.2, “SunSpec Curve-Based Register Models” for general information on creating and modifying curves.

  • Page 58: Figure 30 - Voltage Ride Through Ieee 1547-2018 Configuration

    For the “must trip” curves, if the LVRT or HVRT curves are disabled (REG 40520/40753), or if there is an error in the active curve points, the corresponding Default Grid High/Low Voltage Threshold registers (REG 41819/41820) will be used to define the immediate disconnect threshold. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 59: Low/High Frequency Ride Through

    Operation REG 41829 – AC Connection Type is used to determine which AC voltages are monitored. When this register is set for a four-wire interface, all three line-to-line voltages are monitored as well as the three individual line-to-neutral voltages. When this register is set for a three-wire interface, only the three line-to-line voltages are monitored.

  • Page 60: Figure 31 - Frequency Ride Through Ieee 1547-2018 Configuration

    12 points. Note that “momentary cessation” is not required for IEEE 1547-2018, so the points for these curves default to values outside of the “must trip” regions such that no “momentary cessation” is enforced. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 61: Grid Forming (Island) Operating Mode

    Operation For the “must trip” curves, if the LFRT or HFRT curves are disabled (REG 40986/41291), or if there is an error in the active curve points, the corresponding Default Grid High/Low Frequency Threshold registers (REG 41821/41822) will be used to define the immediate disconnect threshold.

  • Page 62: Initiating Grid Forming Operation

    Charge Wait state and wait for one of these two conditions to be true. Similarly, if the PCS has already connected and is in the Standby state (i.e., not yet turned on), and the OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 63: Parallel Black Start

    Operation microgrid is no longer valid or the sensed voltage rises above the maximum black start voltage, the PCS will open both contactors and go to the Charge Wait state. Once the PCS is on and operating in Grid Forming mode, any changes to the user’s commanded voltage or frequency setpoints (REG 42213/42214) will cause the PCS to ramp to the new setpoints at the ramp rates configured in REG 42219 &...

  • Page 64: Single Unit Standalone Operation

    For systems where multiple PCS units are operated in parallel, or in conjunction with other distributed sources, Oztek recommends using the default droop gains and virtual impedances. If necessary, contact Oztek technical support to discuss systems that require changes from these default settings.

  • Page 65: Passive Mode Changes

    PCS operating mode back to Grid Tie. See Oztek Application Note AN-0003 “OzPCS Seamless Transfer System Configuration” for an example system which implements seamless transfers, along with details on configuring the various PCS support registers and real-world test data.

  • Page 66: Figure 33 - Pcs Control State Machine

    DC and AC Contactors Closed Grid Form Grid Tie Seamless Transfer AC line Ride Thru Timeout Abnormal AC line RideThru Active/Passive Enter To Standby State Standby Figure 33 - PCS Control State Machine OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 67: Initialize

    Operation 6.5.1 Initialize The state machine resets to the Initialize state following a power-on-reset (POR) event. The firmware is initializing hardware peripherals, configuring variables, and performing self-health tests while in this state. Upon successful initialization, the PCS will auto-transition to the Calibrate state.

  • Page 68: Standby

    If the AC line falls outside of the voltage and frequency ranges specified in REG 42232-42235, the PCS will turn OFF, open the AC contactor, and transition to the Offline state. Otherwise, the OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 69: Offline

    Operation PCS will remain in this state indefinitely until an “Enter Standby” command (REG 41743 – Set Operation = 2) or a “Stop” command (REG 41743 – Set Operation = 0) is received. The PCS may transition from this state to the Online – Grid Tie state if seamless transfers are enabled and the Island Control input pin has commanded a mode change due to the utility grid returning to acceptable conditions –...

  • Page 70: Island Transfer Wait

    If the PCS mode is changed from Grid Tie to Grid Forming, the PCS will exit this state and transition to the Disabled state – i.e., Permit Enter Service is only enforced in Grid Tie mode. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 71: Shutdown

    Fault and Warning Conditions 6.5.16 Shutdown The Shutdown state is entered whenever the Bias On/Off discrete input (section 5.2.2.2), is de- asserted. While in the Shutdown state, the PCS performs various housekeeping tasks before finally disabling the bias supply and shutting itself down. If the PCS happens to be operating, or in any state other than Fault, Disabled, or Service Disabled when the Bias On/Off input is de-asserted, the system will automatically sequence to Disabled before transitioning to Shutdown.

  • Page 72: Loss Of Phase

    This feature is meant to avoid tripping due to very fast load transient events, i.e., for only a few line cycles. Overload events that persist for several OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 73: Grid Out Of Tolerance (Oot)

    Fault and Warning Conditions line cycles or longer will result in hardware over-current faults and will cause the PCS to immediately turn off, disconnect, and transition to the Fault state. 7.1.9 Grid Out of Tolerance (OOT) This bit is set whenever the PCS is offline due to the grid being out of tolerance, as defined in section 6.2.2.

  • Page 74: Low Dc Voltage

    This warning bit will be set and remain latched if one or more of the TVS devices appear to be damaged. This bit may only be cleared by cycling the PCS bias power. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 75: Volt-Var Active

    Fault and Warning Conditions 7.1.19 Volt-VAR Active This warning flag is asserted any time the Volt-VAR grid support function is enabled and is presently forcing a non-zero reactive power command due to a grid over or under-voltage condition. 7.1.20 Watt-VAR Active This warning flag is asserted any time the Watt-VAR grid support function is enabled and is presently forcing a non-zero reactive power command in response to the PCS’s active output power.

  • Page 76: H/W And S/W Inverter Over-Current A, B, C

    This bit is set when an island condition is detected and anti-islanding is enabled in REG 40363 – Anti-Islanding Enable and REG 41828 – Anti-Island Detector Mode Select is set to 2, “Fault on Island Detect”. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 77: Emergency Stop

    7.2.9 Invalid Model This bit is set if the loaded product configuration is not compatible with the PCS Model. Please consult Oztek for the proper configuration file. 7.2.10 H/W and S/W DC Over-Voltage The PCS provides fast hardware protection for DC over-voltage conditions. It also monitors the DC voltage and will fault if it exceeds the threshold specified by REG 41880 –...

  • Page 78: Dc Under-Voltage

    PCS or if very abnormal conditions occur outside the PCS. If the PCS is consistently reporting any of these conditions, contact Oztek technical support to discuss the appropriate course of action. Each of the factory faults is briefly described below to assist in this discussion.
  • Page 79 Fault and Warning Conditions • H/W and S/W DC Over-Current (A/B/C, top/bot) – The PCS uses a multi-phase DC/DC converter to boost the DC input voltage up to the desired internal DC link voltage used by the inverter. These fault bits are used to indicate over-current conditions within the DC/DC converter phases.

  • Page 80: Air Filter Service

    LED on the front panel if they were previously asserted. Real Time Clock (RTC) The PCS provides a real-time clock (RTC) function to allow recording elapsed times as well as time stamping data log values. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 81: Real Time Clock - Date Format

    Data Logging CAUTION The RTC needs to be set each time the PCS is powered on. Prior to each shutdown, the present time and date is stored in non-volatile memory. Upon a POR, the RTC will resume time/date keeping from this point until it is set by the user. See section 9.3 for information on setting the date and time.

  • Page 82: Event Data Logging

    42165 Ambient Temp (inlet air) °C 42166 Command – Grid Active Power P 10 W 42167 Command – Grid Reactive Power Q 10 VAR 42168 Command – Grid Active Current D 0.1 A OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 83: Fault Events

    Data Logging Param Data Log Buffer Data Parameter Units Buffer Address Offset Type 42169 Command – Grid Reactive Current Q 0.1 A 42170 Measured Grid Active Current D 0.1 A 42171 Measured Grid Reactive Current Q 0.1 A 42172 Measured Grid Voltage – D 0.1 V 42173 Measured Grid Voltage –...

  • Page 84: Table 11 - Fault Log Header Data Description

    With the header information, it is now possible to read as much or as little of the Fault Log as desired. Each record in the buffer is read individually by first writing the record number to REG OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 85: User Events

    Data Logging 42099 - Fault Log Get Selected Record, and then reading the selected data from the corresponding Data Log Buffer Registers. 10.1.2 User Events User Event data logging is intended to capture operating data leading up to and/or after a configurable trigger event.

  • Page 86: Configuring The Trigger Mode

    Dual OR and Dual AND modes require both Trigger 1 and Trigger 2. Each trigger is configured by first selecting a parameter to trigger off. This is done using REG 42110(42116) - OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 87: Reading The Log

    Data Logging User Log Trigger1(2) Variable Selection. The value written to these registers corresponds to the parameter number in Table 10. For example, to trigger off the PCS Faults, the register should be set to “1”. To trigger off DC Voltage the register should be set to “3”. The value in REG 42111(42117) - User Log Trigger1(2) Value Mask is bitwise AND’ed with the selected variable.

  • Page 88: Table 15 - User Log Header Data Description

    0.00 sec 11951 11951 11951 Sample 11952 PCS Fault DC Volt DC Curr 0.01 sec 11952 11952 11952 Post-Trigger Data → Sample 15,935 PCS Fault DC Volt DC Curr 39.84 sec 15935 15935 15935 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 89: Fault History Log

    Data Logging With the header information, it is now possible to read as much or as little of the User Log data as desired. Each record in the buffer is read individually by first writing the sample number to REG 42123 - User Log Get Selected Sample Data, and then reading the selected data from the corresponding Data Log Buffer Registers.

  • Page 90: Fault Time Stamp Log

    Fault 3 – Date 42141 42142 Fault 3 – Time 42143 42144 Fault 4 – Date 42145 42146 Fault 4 – Time 42147 42148 Fault 5 – Date 42149 42150 Fault 5 – Time OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 91: Operating History Logs

    Data Logging Data Log Buffer Fault Occurrence Address 42151 42152 Fault 6 – Date (Most Recent) 42153 42154 Fault 6 – Time (Most Recent) 42155 10.3 Operating History Logs The operating history log is intended to record critical operating parameters over the life of the PCS.
  • Page 92 Time Operating: 120 < T < 130 °C INV_IGBT Time Operating: 130 < T < 140 °C INV_IGBT Time Operating: 140 < T < 150 °C INV_IGBT Time Operating: T > 150 °C INV_IGBT OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 93 Data Logging Index Parameter Time Operating: T < 10 °C Time Operating: 10 < T < 20 °C Time Operating: 20 < T < 30 °C Time Operating: 30 < T < 40 °C Time Operating: 40 < T < 50 °C Time Operating: 50 <...
  • Page 94 < 50 °C Time Operating: 50 < T < 60 °C Time Operating: 60 < T < 70 °C Time Operating: T > 70 °C Fan Operating Time Time Since Last Filter Service OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 95: Min/Max Log

    Data Logging The user may read a single operating time value or up to a maximum of 35 (i.e., full length of Data Log Buffer) by using REG 42128 – Operation Log Read Timer Variables. This is a 16-bit register in which the LSB is used to specify the index of the first value to be read, and the MSB specifies the number of values to read.
  • Page 96 °C Min – Heatsink Temp Inverter Phase C °C Min – Estimated IGBT Temp DC/DC °C Min – Estimated IGBT Temp Inverter °C Min – Cabinet Temperature °C Min – Ambient Temperature °C OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 97: Communications Interface

    Communications Interface The user may read a single parameter or multiple parameters by using REG 42130 – Operation Log Read Min/Max Values. This is a 16-bit register in which the LSB is used to specify the index of the first parameter to be read, and the MSB specifies the # of parameters to read. After writing to register 42130, the parameters can be read from the corresponding Data Log Buffer Registers.
  • Page 98 (called an exception response). For a normal response, the server simply echoes to the request the original function code. For an exception response, the server returns a code that is equivalent function code from the request PDU with its most significant bit set to logic 1. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 99: Physical Layer

    Communications Interface 11.2 Physical Layer The RS-485 physical interface conforms to the Modbus specification published on the Modbus.org site in 2002 (Modbus_over_serial_line_V1.pdf, Nov 2002). 11.3 RTU Transmission Mode Modbus supports two modes of transmission, ASCII (American Standard Code for Information Interchange), and RTU (Remote Terminal Unit).

  • Page 100: Slave Address

    The CRC-16 polynomial is used to compute the checksum for the message content. The formula for the CRC-16 polynomial is: The checksum can be computed using the following algorithm: OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 101: Exception Response

    Communications Interface 1. Load a 16-bit register with all 1’s. 2. Exclusive OR the first 8-bit byte of the message with the high order byte of the 16-bit register, putting the result in the 16-bit register. 3. Shift the 16-bit register 1 bit to the right. 4.

  • Page 102: Read Holding Registers (Function Code 03)

    Reg Value Lo (40130) # of Registers Lo Reg Value Hi (40131) CRC Lo crc_l Reg Value Lo (40131) CRC Hi crc_h Reg Value Hi (40132) Reg Value Lo (40132) CRC Lo crc_l CRC Hi crc_h OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 103: Preset Single Command Register (Function Code 06)

    Communications Interface 11.4.2 Preset Single Command Register (Function Code 06) This function code is used to write a single holding register. The request PDU specifies the address of the register to be written. Registers are addressed starting at zero. Therefore, register numbered 1 is addressed as 0.
  • Page 104 # of Registers Lo Byte Count CRC Lo crc_l Register Value Hi (40433) CRC Hi crc_h Register Value Lo (40433) Register Value Hi (40434) Register value Lo (40434) CRC Lo crc_l CRC Hi crc_h OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 105: Sunspec Device Information Models

    SunSpec Alliance web site at sunspec.org/specifications. The table below lists the standard SunSpec information models as well as the Oztek-specific models implemented in the PCS. Each of these models is then described in more detail in the sections that follow.

  • Page 106: Register Properties

    • sunssf: defines value to shift decimal point to left (negative) or right (positive). 12.1.4 SunSpec Data Type U16 U16 represents all unsigned, 16-bit integer values and consist of a single register. Values are stored in big-endian order. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 107: Sunspec Data Type S16

    SunSpec Device Information Models U16 Format Range Not Implemented Value Integer 0 … 65534 0xFFFF Acc16 0 … 65534 0x0000 ENUM 0 …. 65534 0xFFFF Bitfield 0 …. 0x7FFF 0xFFFF 0x8000 Always returns 0x8000 12.1.5 SunSpec Data Type S16 S16 represents all signed, 16-bit integer values and consist of a single register. Values are stored in big-endian order.

  • Page 108: Sunspec Data Type U64

    Several SunSpec information models implement control functions using piece-wise linear curves to specify the behavior for that function. For these models, curves are defined using a set of management points. These curve-based register models follow a common set of rules for OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 109: Curve Sets

    SunSpec Device Information Models specifying, storing, and updating these management points. The table below lists the specific register models that utilize this curve management methodology. Table 24 - SunSpec Curve-Based Models Model ID Description DER Volt-VAR DER Volt-Watt DER Low Voltage Trip (LVRT) DER High Voltage Trip (HVRT) DER Low Frequency Trip (LFRT) DER High Frequency Trip (HFRT)

  • Page 110: Register Models

    12.3 Register Models The following sections tabulate the registers for each of the SunSpec and Oztek models implemented in the PCS. The tables only include the implemented registers, Modbus reads of...
  • Page 111 SunSpec Device Information Models unimplemented SunSpec registers will return the “Not Implemented” values defined in sections 12.1.4 through 12.1.9. Publication UM-0073...

  • Page 112: Sunspec Identifier

    Byte 11..12: Release Code: ‘-R’ – Production Release 40045-40052 ASCII ‘-C’ – Release Candidate ‘-E’ – Experimental Debug Build 40053-40068 Serial number ASCII 40069 Modbus Device Address New value will not take effect until next POR OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 113: Sunspec Model 17 Registers - Serial Interface

    SunSpec Device Information Models 12.3.3 SunSpec Model 17 Registers – Serial Interface Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 40071 Model Identifier 40072 Model Length - # of 16-bit registers to follow Fixed Block: Baud Rate: Supported values = 4800, 19200, 38400, 57600, and 115200 40077 57600...
  • Page 114 0.1 Vrms 40176 40198 AC Current - Phase C 0.1 Arms 40177 AC Voltage - CA 0.1 Vrms 40199 40178 AC Voltage - CN 0.1 Vrms 40199 40198 sunssf Scale Factor - AC Current OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 115: Sunspec Model 702 Registers - Der Capacity

    SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 40199 Scale Factor - AC Voltage sunssf 40200 sunssf Scale Factor - Line Frequency 40201 sunssf Scale Factor - AC Power 40202 Scale Factor - Power Factor sunssf 40203 sunssf...
  • Page 116 4800 2080 4800 40281 Setting for Maximum AC Current 0.1 A 40290 40285 Scale Factor - Active Power sunssf 40286 Scale Factor - Power Factor sunssf 40287 Scale Factor - Apparent Power sunssf OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 117: Sunspec Model 703 Registers - Enter Service

    SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 40288 Scale Factor - Reactive Power sunssf 40289 Scale Factor - AC Voltage sunssf 40290 Scale Factor - AC Current sunssf 40291 Scale Factor - Susceptance sunssf Units include applied scale factor register The PCS does not provide independent settings for maximum injected versus absorbed reactive power –...

  • Page 118: Sunspec Model 704 Registers - Der Ac Controls

    Anti-Islanding Enable: 0 = Disabled; 1 = Enabled ENUM sunssf 40364 Scale Factor - Power Factor 40365 Scale Factor - Limit Max Active Power Percent sunssf 40367 Scale Factor - Active Power Percent sunssf OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 119: Sunspec Model 705 Registers - Der Volt-Var

    SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 40369 Scale Factor - Reactive Power Percent sunssf 40370 Power Factor Setpoint When Injecting Watts 40364 1000 1000 Power Factor Excitation When Injecting Watts: 40371 0 = Over Excited ENUM...
  • Page 120 40390 10000 40422 Volt-VAR Curve 1: Points 5 thru 10 – VAR (%MAX, see REG 40394) 0.01 % 40391 Repeating Block #2: 40423 Volt-VAR Curve 2: Number of Active Points in Array Note OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 121: Sunspec Model 706 Registers - Der Volt-Watt

    SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Volt-VAR Curve 2: VAR Dependent Reference: 0 = % Max Watts (REG 40266) 40424 1 = % Max VARs (REG 40272) ENUM Note 2 = % Available VAR (not supported, behaves like setting ‘1’) 3 = % Max VA (REG 40271) Volt-VAR Curve 2: Power Priority:...
  • Page 122 Note -10000 10000 Units include applied scale factor register Curve 2 data defaults to the latest Curve 1 values at POR - see section 12.2 for details on how to manage curve settings OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 123: Sunspec Model 707 Registers - Der Low Voltage Trip (Lvrt)

    SunSpec Device Information Models 12.3.10 SunSpec Model 707 Registers – DER Low Voltage Trip (LVRT) Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 40518 Model Identifier 40519 Model Length - # of 16-bit registers to follow Fixed Block: LVRT Module Enable: 0 = Disable, 1 = Enable 40520...

  • Page 124: Sunspec Model 708 Registers - Der High Voltage Trip (Hvrt)

    SunSpec Model 708 Registers – DER High Voltage Trip (HVRT) Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: Model Identifier 40751 40752 Model Length - # of 16-bit registers to follow Fixed Block: OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 125 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) HVRT Module Enable: 0 = Disable, 1 = Enable 40753 Note: If disabled, then REG 41819 “Default Grid High Voltage Threshold” is ENUM used to define the immediate disconnect threshold 40754 HVRT Adopt Curve Request...

  • Page 126: Sunspec Model 709 Registers - Der Low Frequency Trip (Lfrt)

    LFRT Adopt Curve Request 40988 LFRT Adopt Curve Result: 0 = In Progress; 1 = Completed, 2 = Failed ENUM 40989 LFRT Number of Curve Points Supported 40990 LFRT Number of Curves Supported OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 127 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 40991 LFRT Scale Factor - Frequency sunssf 40992 LFRT Scale Factor - Duration sunssf Repeating Block #1: LFRT Curve 1: 0 = Read/Write; 1 = Read Only 40993 Curve 1: Must Trip Data 40994...

  • Page 128: Sunspec Model 710 Registers - Der High Frequency Trip (Hfrt)

    HFRT Curve 1: 0 = Read/Write; 1 = Read Only Curve 1: Must Trip Data HFRT Must Trip Curve 1: Number of Active Points in Array 41299 HFRT Must Trip Curve 1: Point 1 – Frequency 0.01 Hz 41296 41300 6300 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 129 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) HFRT Must Trip Curve 1: Point 1 – Duration 0.01 Sec 41297 41302 HFRT Must Trip Curve 1: Point 2 – Frequency 0.01 Hz 41296 41304 6200...

  • Page 130: Sunspec Model 711 Registers - Der Frequency Droop (Freq-Watt)

    Freq-Watt Controller 2: Read Only: 0 = Read/Write; 1 = Read Only ENUM Units include applied scale factor register Controller 2 data defaults to the latest Controller 1 values at POR - see section 12.2 for details on how to manage controller settings OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 131: Sunspec Model 712 Registers - Der Watt-Var

    SunSpec Device Information Models 12.3.15 SunSpec Model 712 Registers – DER Watt-VAR Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 41628 Model Identifier 41629 Model Length - # of 16-bit registers to follow Fixed Block: 41630 Watt-VAR Module Enable: 0 = Disable, 1 = Enable ENUM...

  • Page 132: Sunspec Model 714 Registers - Der Dc Measurement

    Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: Model Identifier 41690 Model Length - # of 16-bit registers to follow 41691 Fixed Block: 41694 DC Port Count OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 133: Sunspec Model 715 Registers - Der Control

    SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 0.1 A 41695 DC Current - Total of All Ports 10 W 41696 DC Power - Total of All Ports sunssf 41705 Scale Factor - DC Current sunssf 41706 Scale Factor - DC Voltage...

  • Page 134: Oztek Extension Model 64340 Registers - Control And Status

    2 = Enter Standby Mode (stop processing power) 3 = Exit Standby Mode (start processing power) This register is auto cleared to zero after a write. 12.3.18 Oztek Extension Model 64340 Registers – Control and Status Scale Data Factory Access...
  • Page 135 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) PCS Operating State: 0 = Initialize 9 = Offline 1 = Fault 10 = Active Ride Thru 2 = Calibrate 11 = Passive Ride Thru 3 = Disabled 12 = Online –...
  • Page 136 Bit 13 = Ride Thru - Low Voltage Bits 29-30 = Reserved Bit 14 = Ride Thru - High Voltage Bit 31 = AC Current Overload Trip Bit 15 = Ride Thru - Low Freq OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 137 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Factory Fault Status: Bit 0 = H/W DC Over Current A - bot Bit 14 = Link Over Voltage Bit 1 = H/W DC Over Current B - bot Bit 15 = Link Voltage Imbalance Bit 2 = H/W DC Over Current C - bot Bit 16 = Pre-charge Timeout...
  • Page 138 8 = Operation not allowed when the PCS is ON 41768 Software P/N – Inverter Controller 41769 Software P/N – DC/DC Controller Software P/N – Bootloader 41770 Software Revision – Inverter Controller 41771 Software Revision – DC/DC Controller 41772 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 139 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Software Revision – Bootloader 41773 FPGA Revision 41774 User Configuration Revision: 41775 The user may use this register to assign a revision code, allowing them to 0xFFFF manage their changes to the default product configuration.

  • Page 140: Oztek Extension Model 64341 Registers - Configuration

    Random turn-on window used when transitioning from Standby to 0.1 sec 41858 36000 Online. Initial Turn-On Ramp Time: 41824 Time to ramp from 0 to 100% of W (REG 40266) when turning on from 0.1 sec 41855 10000 Standby. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 141 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Auto-Resume Timeout: How long to wait in the Offline state for the grid to return to within tolerance and resume operation. If the timeout expires, the PCS will 41825 41859 3600...

  • Page 142: Oztek Extension Model 64302 Registers - Alarms

    41922 41880 DC Over Voltage Fault Threshold 0.1 V 8400 8400 41881 DC Over Voltage Warning Threshold 0.1 V 41922 8300 8400 DC Over Voltage Warning Recover Delta 0.1 V 41922 1000 41882 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 143 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Alarm Output 1 - PCS Fault Mask The bit fields correspond to Register 41758 – PCS Fault Status. Setting a 0xFFFF 0xFFFF 41883 Bitfield mask bitfield to “1”...
  • Page 144 Setting the mask bitfield to “1” will cause the Alarm output to be asserted when the selected function/action is active. Setting multiple mask bits to 41896 Bitfield 0xFFFF “1” logically OR’s them together. Bit 0 = Inverter PWM Outputs Enabled Bits 1-15 = Reserved OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 145: Oztek Extension Model 64304 Registers - Firmware Update

    Scale Factor – AC Current sunssf 41922 Scale Factor – DC Voltage sunssf Scale Factor – DC Current sunssf 41923 Units include applied scale factor register 12.3.21 Oztek Extension Model 64304 Registers – Firmware Update Scale Data Factory Access Number Description Units Factor Type...

  • Page 146: Oztek Extension Model 64305 Registers - Datalogging

    Oztek Extension Model 64305 Registers – Datalogging Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 42083 Model Identifier 64305 42084 Model Length - # of 16-bit registers to follow Fixed Block: OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 147 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Real Time Clock – Set Date This register is used to set the date using the following format: BITS [13..0] = Year BITS [15..14] = not used BITS [23..16] = Month BITS [31..21] = Day 0x1F0C...
  • Page 148 User Log Start/Stop: Used to start the data logger and arm the trigger: 42101 0 = Stop ENUM 1 = Start User Log Post Trigger Percentage: 42102 Defines how much of the buffer is used for storing post trigger data. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...
  • Page 149 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) User Log Sample Period: 42103 Sets the time between samples for the User Log. See section 10.1.2.2 for 30000 details on selecting the sample period. User Log Variable Selection (LSW) 0xFFFF 42104...
  • Page 150 42126 Writing a “1” will load the history data for the fault specified by register ENUM 42124 into the Data Log Read Buffer registers starting at 42132. 42127 Reserved Factory Command Register ENUM OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 151: Oztek Extension Model 64308 Registers - Grid Forming Configuration & Control

    MSB = # of variables to be read; LSB = Variable Index 42131 Reserved Factory Command ENUM 42132- Datalog – Read Buffer (35 x 32-bit words, or 70 x 16-bit words) 42200 12.3.23 Oztek Extension Model 64308 Registers – Grid Forming Configuration & Control Scale Data Factory Access Number Description Units...
  • Page 152 0.01 Hz 42261 5900 4500 6500 42248 Island Control Input - Grid Tie to Island Debounce & Delay 42264 1000 42264 42249 Island Control Input - Island to Grid Tie Debounce & Delay 1000 OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 153: Sunspec Model 0Xffff Registers - End Model

    SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 42250 Seamless Transfer Offline Timeout Delay 42264 42251 Seamless Transfer to Island Voltage Ramp Up Delay 42264 1000 42254 Scale Factor – Grid Form Voltage Command sunssf 42255 Scale Factor –...

  • Page 154: Servicing The Unit

    Remove the filter retainer bracket (1) by loosening the four captive screws (2). Remove the filter (3) and replace it with a new one (Oztek p/n 920562), making sure the pleats in the filter fit through the rectangular hole in the bracket. Reinstall the bracket by hand-tightening the captive screws.

  • Page 155: Firmware Updates

    Oztek Extension Model 64304 Registers – Firmware Update. 15. Oztek Power Studio™ Tool The Oztek Power Studio™ tool is a Microsoft Windows based Graphical User Interface (GUI), as shown in Figure 35, which can be used to easily configure and control the PCS. The tool...

  • Page 156: Figure 35 - Oztek Power Studio

    • PCS configuration control, including: o Editing configurations o Downloading/uploading configurations o Archiving multiple configuration files Figure 35 - Oztek Power Studio For detailed information and operating instructions, please refer to UM-0052 Oztek Power Studio™ User’s Manual. OZpcs-EP40 40kW Energy Storage PCS User’s Manual...

  • Page 157: Appendix A - Records Of Certification

    Appendix A – Records of Certification 16. Appendix A – Records of Certification Publication UM-0073...

  • Page 158: Warranty And Product Information

    This Limited Warranty is provided by Oztek Corp. ("Oztek") and covers defects in workmanship and materials in your PCS. This Warranty Period lasts for 5 years from the date of purchase at the point of sale to you, the original end user customer, unless otherwise agreed in writing.
  • Page 159 Claims are limited to repair and replacement, or if at Oztek's discretion that is not possible, reimbursement up to the purchase price paid for the product. Oztek will be liable to you only for direct damages suffered by you and only up to a maximum amount equal to the purchase price of the product.

  • Page 160: Return Material Authorization Policy

    Warranty and Return Return Material Authorization Policy Before returning a product directly to Oztek you must obtain a Return Material Authorization (RMA) number and the correct factory "Ship To" address. Products must also be shipped prepaid. Product shipments will be refused and returned at your expense if they are unauthorized, returned without an RMA number clearly marked on the outside of the shipping box, if they are shipped collect, or if they are shipped to the wrong location.

  • Page 161: Optional Extended Warranty

    Oztek will, at its option, use new and/or reconditioned parts in performing warranty repair and building replacement products. Oztek reserves the right to use parts or products of original or improved design in the repair or replacement. If Oztek repairs or replaces a product, its warranty continues for the remaining portion of the original Warranty Period or 90 days from the date of the return shipment to the customer, whichever is greater.
  • Page 162 Claims are limited to repair and replacement, or if in Oztek's discretion that is not possible, reimbursement up to the purchase price paid for the product. Oztek will be liable to you only for direct damages suffered by you and only up to a maximum amount equal to the purchase price of the product.

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