Page 1 OZpcs-RS40 SB 40kW Energy Storage Power Conversion System Rack Scale Series USER MANUAL UM-0075 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 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for the OZpcs-RS40 power conversion system (PCS), that shall be followed during installation and maintenance of the PCS. The Ozpcs-RS40 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 ........................5 Reliability ............................. 5 Electrical Specifications ....................... 5 Environmental Specifications (Indoor use) ................. 7 Mechanical Specifications ......................
Page 6 Table of Contents 6.2.4.1 Constant Reactive Power Control................. 35 6.2.4.2 Power Factor Control ....................36 6.2.4.3 Volt/VAR Control ......................37 6.2.4.4 Watt/VAR Control ......................38 6.2.5 Output Power and Current Limiting ..................39 6.2.6 Unbalanced Voltage Compensation ..................40 6.2.6.1 Negative Sequence Current Control ................
Page 7 Table of Contents 7.1.10 Resume – Delay ........................59 7.1.11 Island Detected ........................59 7.1.12 High DC Current........................59 7.1.13 Temperature Warning ......................59 7.1.14 Low DC Voltage ........................59 7.1.15 High DC Voltage ........................60 7.1.16 Fan Warning .......................... 60 7.1.17 HVRT Active Override ......................
Page 8 Table of Contents Operating History Logs ......................76 9.3.1 Operating Time Log ....................... 76 9.3.2 Min/Max Log ......................... 80 10. Communications Interface ..................... 82 10.1 Modbus Overview ........................82 10.2 Physical Layer ..........................83 10.3 RTU Transmission Mode ......................84 10.3.1 Synchronization ........................
Page 9 11.3.21 Oztek Extension Model 64304 Registers – Firmware Update ..........128 11.3.22 Oztek Extension Model 64305 Registers – Datalogging ............129 11.3.23 Oztek Extension Model 64308 Registers – Grid Forming Configuration & Control .... 134 11.3.24 SunSpec Model 0xFFFF Registers – End Model ..............136 12.
Page 10 Figure 28 - Island Mode Capable System Block Diagram ................47 Figure 29 - PCS Control State Machine ....................... 52 Figure 30 - RTU Message Frame (PDU) Format ..................84 Figure 31 - Oztek Power Studio GUI ...................... 139 OZpcs-RS40 SB 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 - Compatible Compression Lugs (DC) ..................... 19 Table 4 - Compatible Compression Lugs (AC) ..................... 21 Table 5 - LED Functions - Normal Operation ....................23 Table 6 - LED Functions - Bootloader Operation ..................
Page 13: Table 1 - Revision History
Table 1 - Revision History Date Description of Change Author • Initial Release 2/8/2023 Hodgdon • Added support to specify VARs for Fixed VAR, Volt-VAR, and Watt-VAR modes as % of Max Watts, VARs, or VA (see REG 5/11/2023 Hodgdon 40347, 40394, 40424, 41643, 41667) •...
Page 14: Introduction
PCS. Referenced Documents Author Document Oztek OzPCS-RS40 Seamless Transfer System Configuration (AN-0003) Oztek Oztek Power Studio™ User’s Manual (UM-0052) Oztek TMS28x CAN Bootloader (FS-0057) Modbus.org Modbus Over Serial Line v1.02 Modbus.org Modbus Application Protocol Specification v1.1b SunSpec Alliance SunSpec Technology Overview 12040 v1.4 SunSpec Alliance SunSpec Device Information Model Specification V1.0...
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
Customary mounting hardware (10-32) and one for metric mounting hardware (M6). When placing your order, please specify which brackets (US Customary or metric) should be included. Additional mounting bracket options are also available – contact Oztek for more details. OZpcs-RS40 SB 40kW Energy Storage PCS User’s Manual...
Page 17: Specifications
Specifications Specifications Reliability Operational Life 20 Years at 25°C, 33% full load duty cycle Service Interval No field service required. Electrical Specifications DC Input DC Input Voltage Range 330 to 820 V, Derated below 550 V, see section 0 DC Input Current 75 A maximum (operating) The DC input does not include fuse protection.
Page 18 Specifications 535 V (line-to-line), 576 V (isolated 3-wire operation, see REG 41829 – AC Connection Type): Active Ride Through V Regions in the High Voltage Ride Through Momentary Cessation curve that exceed this voltage will be forced to this value. AC Interface (Stand-alone) Max Operating Voltage 576 V...
Page 19: Environmental Specifications (Indoor Use)
Specifications Environmental Specifications (Indoor use) Operating Temperature Range “F” Option, Air Flow front to back: -5 to 60 °C “B” Option, Air Flow back to front: -5 to 50 °C Customer derating required to meet warranty and life specifications (see Section 2.7 for details) Storage Temperature Range -20 to 60 °C Operating Humidity Range...
Page 20: Mechanical Dimensions
Specifications Mechanical Dimensions Figure 2 - Mechanical Outline - Front View Figure 3 - Mechanical Outline - Side View OZpcs-RS40 SB 40kW Energy Storage PCS User’s Manual...
Page 21: Figure 4 - Mechanical Outline - Rear View
Specifications Figure 4 - Mechanical Outline - Rear View Figure 5 - Mechanical Outline - Top View Publication UM-0075...
Page 22: Temperature Based Power Derating
Specifications Temperature Based Power Derating The PCS can be ordered with two different fan orientations: one for front-to-back airflow and one for back-to-front. The recommended configuration is the front-to-back airflow option as this provides better cooling for the PCS’s internal components. The back-to-front model is available for end systems that are constrained to airflow in this direction, however this comes at the expense of reduced operating temperature range.
Page 23: Figure 6 - Temperature Derating Curve - "F" Option
Specifications Output Power vs Ambient Temperature "F" Option, Airflow Front to Back 120% 100% Peak Operation Rated Life Ambient Temperature (C) Figure 6 - Temperature Derating Curve – “F” Option Output Power vs Ambient Temperature "B" Option, Airflow Back to Front 120% 100% Peak Operation...
Page 24: Dc Input Voltage Based Power Derating
Specifications In general, the temperature rise through the unit is less than 10°C up to 50% power and less than 20°C when operating between 50% and rated power. For the purpose of determining external ambient temperature using the data log measurements, a 10°C rise is assumed for 50% power or less, and a 20°C rise is assumed for greater than 50% power.
Page 25: Ac Voltage Based Power Derating
Specifications AC Voltage Based Power Derating The chart below illustrates the power derating at low AC line voltages based on the maximum AC current rating. When operating in Grid Tie mode, the PCS will automatically limit the AC power based on the derating curve and will assert the AC Current Limit warning flag whenever the commanded power is being limited to a lower value as a result of this current limit.
Page 26: Elevation Based Power Derating
Specifications 2.10 Elevation Based Power Derating Figure 10 - Elevation Derating Curves – “F” option Figure 11 - Elevation Derating Curves – “B” option OZpcs-RS40 SB 40kW Energy Storage PCS User’s Manual...
Page 27: Maintenance
Specifications 2.11 Maintenance The PCS has been designed to require no maintenance over its operating life. 2.12 Regulatory Specifications 2.12.1 Listings (See Appendix A) UL1741 Inverters, Converters, Controllers and Interconnection System Equipment for Use with Distributed Energy Resources, Edition 3, Including Supplement SA and SB and CA Rule 21 CSA C22.2#017 Safety Requirements for Electrical Equipment for Measurement,...
Page 28: Unpacking And Inspection
Notice: Retain the packaging material! Proper packaging, including internal cushioning and palletization, is required to maintain warranty coverage on any unit returning to Oztek. 1. Using the provided packing list, verify that the model received corresponds to that ordered and inspect the packaging for any signs of shipping damage. Immediately seek assistance from the freight carrier for any visible signs that the packaging or product has been damaged.
Page 29: Installation
The unused mounting holes can be ignored, as they do not impact mechanical integrity of the enclosure. 5. User supplied bolts which penetrate the enclosure beyond 7mm will void the product warranty. Oztek strongly recommends using the supplied hardware to install rack support brackets and mounting ears. CAUTION Do not carry or lift the OZpcs-RS40 by the mounting ears.
Page 30: Electrical
4. Ensure that adequate spacing is provided from both the rear and front panels of the unit such that ventilation airflow is not obstructed. Oztek requires 40 mm (1.6”) minimum clearance front and back, with greater than 50 mm (2.0”) recommended.
Page 31: Dc Connection
Installation 4.2.1 DC Connection DANGER High voltage may cause severe personal injury or death. Avoid contact with electrical terminals. De-Energize all sources before servicing. CAUTION The OZpcs-RS40 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.
Page 32: Ac Connection
Installation Wire Size Manufacturer Panduit LCAN1/0-14-X Panduit LCAN1-14-E Panduit LCAN2-14-Q 3, 4 Panduit LCAN4-14-L 3. Turn off the DC source and secure against turning on again. 4. Connect the negative and positive cables to the DC terminal block as shown in Figure 14. Connections should be tightened to a specified torque of 2.8 Nm (25 in-lb) +/- 5%.
Page 33: Figure 13 - Ac Terminal Block Connections
Installation 1. For all AC cable connections, use a minimum 4 AWG copper wire that is designed for +90 °C (+194 °F). Notice: Ambient Temperature The higher the ambient temperature the higher the power losses. Use cables having larger cross-sections in installations with high ambient temperatures. 2.
Page 34: Low Voltage I/O
Installation 4.2.3 Low Voltage I/O Figure 16 - Low Voltage I/O Connections All isolated, low voltage I/O signals are provided on a standard High Density, D-Sub, 15-pin, female 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 35: Interface
Interface Interface Visual Indicators Figure 17 - Visual Indicators The PCS includes 4 LED’s on the front panel to indicate operating status. Table 5 defines the meaning of each LED for normal operation while Table 6 defines their meaning when the bootloader is running during firmware updates.
Page 36: Modbus Rs-485
Interface Table 7 - I/O D-Sub 15 Pinout Pin # Name Description ESTOP_C Opto-Isolated Emergency Stop - Cathode Input ESTOP_A Opto-Isolated Emergency Stop - Anode Input DOUT1_C Opto-Isolated Output #1 – Collector TERM_A RS-485 Termination Resistor (A – connection) RS485A RS-485 A Signal DIN_A Opto-Isolated Island Control Input –...
Page 37: Inputs
Interface 5 10 Master Controller OzPCS #3 RS485-B RS485-A 5 10 OzPCS #1 OzPCS #2 Figure 18 - Modbus Serial Interface Wiring 5.2.2 Inputs The PCS provides three, opto-isolated, discrete inputs. The Emergency Stop and DIN inputs are designed such that they can be directly driven with voltages from 5 up to 32V as illustrated in Figure 19.
Page 38: Island Control Input
Interface CAUTION The PCS’s internal bias supply is generated from the high voltage DC battery input. The user should ensure that the battery voltage remains present while the Bias On/Off input is asserted, as well as for the brief shutdown period after this pin is deasserted. Disconnecting the battery input while Bias On/Off is asserted will cause the internal bias supply to turn off immediately, bypassing any power-down housekeeping tasks, and possibly resulting in the loss of accumulated datalogging information!
Page 39: Operation
Operation Alarm Output Mask Register Status Register 41887 Alarm Output 2 – PCS Fault Mask 41758 41889 Alarm Output 2 – PCS Warning Mask 41756 41894 Alarm Output 2 – PCS State Mask 41897 Alarm Output 2 – Misc. Function Mask 41903 Alarm Output 2 –...
Page 40: Grid Tie Operating Mode
Operation Grid Tie Operating Mode When configured to operate in Grid Tie mode (see REG 41747 and REG 41813), the PCS provides bi-directional, active and reactive (P/Q) power control to the grid. Assuming the grid is present and within specification, the PCS will connect and accept power commands from the user.
Page 41: Enabling Service
Operation 6.2.2 Enabling Service When configured for Grid Tie mode, the PCS uses the standard SunSpec “Enter Service” register model to determine if and when the PCS is allowed to operate into the grid (see section 11.3.6 for register details). When REG 40294 –...
Page 42: Active Power Control
Operation The Enter Service Delay Time and Enter Service Random Delay can be bypassed by setting the respective register value to zero. 6.2.3 Active Power Control Active power is directly controlled by writing the desired power, as a percentage of the maximum output power (W , REG 40266), to REG 40339 –...
Page 43: Figure 21 - Volt/Watt Configuration
Operation implemented using a configurable array of Volt-Watt points that specify the desired piecewise linear characteristic. This curve must contain a minimum of two points, or up to a maximum of ten points. The Volt-Watt curve is created using the registers found in SunSpec Model 706, which is summarized in section 11.3.9.
Page 44: Frequency/Watt Control
Operation CAUTION For the Volt-Watt curve, the voltage of each consecutive point in the curve must be higher than the previous point. Failure to meet this requirement will result in the curve being disabled, an Invalid User Configuration fault will be asserted in REG 41758 – PCS Fault Status, and the Volt-Watt Curve Error will be reported in REG 41762 –...
Page 45: Figure 22 - Frequency/Watt Configuration
Operation For low frequency conditions, the controller behaves similarly except that once the frequency is less than the under-frequency deadband threshold below F , the pre-disturbance power setpoint is linearly increased as the frequency continues to drop, and the change in active power is based on the under-frequency change ratio (k ).
Page 46: Prioritization Of Active Power Limiting Functions
Operation Table 9 - Frequency-Watt Control Equations Under-Frequency Conditions Over-Frequency Conditions ( �� ) − �� − ( �� − �� + �� = �� = �� − �� ∙...
Page 47: Constant Reactive Power Control
Operation • Constant Reactive Power – reactive power is directly controlled from a user-specified setpoint • 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 •...
Page 48: Power Factor Control
Operation When changing the reactive power setpoint, or when enabling/disabling constant reactive power control while the PCS is operating, the reactive power will be ramped at a rate defined by REG 40362 – Reactive Power Ramp Rate. When operating in this mode and the combined active and reactive power commands exceed the maximum apparent power setting (VA , REG 40271), the active versus reactive power priority is determined by REG 40348 –...
Page 49: Volt/Var Control
Operation power value (VA , 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. 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.
Page 50: Watt/Var Control
Operation When the Volt-VAR function is enabled (REG 40380), the reactive power setpoint will follow the specified Volt-VAR curve by comparing the measured grid voltage against a reference voltage ) and determining how much reactive power to inject or absorb from the grid. By default, is set to the nominal grid voltage (V ) specified in REG 40278.
Page 51: Output Power And Current Limiting
Operation When the result is a non-zero reactive power command, the Watt-VAR Active warning bit will be asserted in REG 41756 – PCS Warnings. Reactive Power (% of VAR Injected (over-excited) (P1,Q1) Active Power (% of W (P3,Q3) (P5,Q5) Absorbed Injected (P2,Q2) (P4,Q4)
Page 52: Unbalanced Voltage Compensation
This droop gain is configured in REG 41835 – Voltage Unbalance Droop Gain. 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.
Page 53: Anti-Island Detection
Operation The negative sequence current command from the voltage unbalance controller is considered a secondary support feature of the PCS, and as such, the positive sequence current command from the user’s power setpoints and other grid support functions is given priority over the negative sequence current.
Page 54: Low/High Voltage Ride Through
Operation If the voltage/frequency exceeds the “must trip” curve’s threshold and duration (shown with red lines), i.e. crosses the red line into the pink region, the PCS will trip off and go to the Offline state, or immediately go to the Fault state if REG 41825 – Auto-Resume Timeout is set to zero. Momentary Cessation Active...
Page 55: Table 10 - Ieee 1547-2018 Default L/Hvrt Trip Settings
Operation high voltage “must trip” array defined in Model 708. Note that the first line segment is extended horizontally to the left or vertically based on the slope of the first pair of points, and that the curve after the last point is always extended horizontally to the right. Table 10 - IEEE 1547-2018 Default L/HVRT Trip Settings Region Voltage...
Page 56: Figure 26 - Voltage Ride Through Ieee 1547-2018 Configuration
Operation Must Trip High Voltage Region High Voltage Region 1 Continuous Operating Region Low Voltage Region 1 Must Trip Low Voltage Low Voltage Region 2 Region 0.16 Time (sec) Figure 28 - Voltage Ride Through IEEE 1547-2018 Configuration For the High Voltage Ride Through “momentary cessation” curve, any voltage threshold set above the Maximum Active Ride Through V (see section 2.2 “Electrical Specifications”) will be forced to this value and the HVRT Active Override warning bit will be set in REG 41756 –...
Page 57: Low/High Frequency Ride Through
Operation 6.2.8.2 Low/High Frequency Ride Through The Low/High Frequency Ride Through (L/HFRT) “must trip” and “momentary cessation” curves are implemented using configurable arrays of X-Y points to allow the user to define multiple frequency/duration boundary conditions. Two different sets of curves are provided, one for low frequency conditions and one for high frequency conditions.
Page 58: Grid Forming (Island) Operating Mode
Operation Must Trip High Frequency Region 62.0 High Frequency Region 1 61.2 60.0 Continuous Operating Region 58.5 Low Frequency Region 1 56.5 Must Trip Low Frequency Region 0 0.16 Time (sec) Figure 29 - Frequency Ride Through IEEE 1547-2018 Configuration The Low/High Frequency Ride Through (L/HFRT) “momentary cessation”...
Page 59: Figure 28 - Island Mode Capable System Block Diagram
Operation Wind Turbine Energy Storage Inverter Syst em Battery PV Panels System Modbus/ RS-485 Discrete Controller Comms Link Point of Common Coupling (PCC) Load Common AC Bus Disconnect (Microgrid) Static Transfer Switch (STS) Figure 30 - Island Mode Capable System Block Diagram When operating in Grid Forming mode, the PCS accepts voltage and frequency commands from the user.
Page 60: Initiating Grid Forming Operation
Operation 6.3.1 Initiating Grid Forming Operation Similar to Grid Tie operation, when first powered up in Grid Forming mode, the PCS’s internal DC and AC contactors are both open. Prior to operating the PCS, it must first be commanded to close these contactors by first writing a “1”...
Page 61: Parallel Black Start
Operation 6.3.2 Parallel Black Start The local microgrid can be black started by multiple PCS units operating in parallel. To do so, they all need to be started at the exact same point in time. In order to meet this requirement, all PCS units must be tied to the same physical RS-485 serial bus, and the dedicated Modbus broadcast device address of zero must be used when turning the PCS on (writing a “3”...
Page 62: Changing Operating Modes
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 63: Seamless Mode Changes
PCS operating mode back to Grid Tie. See Oztek Application Note AN-0003 “OzPCS-RS40 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 64: Figure 29 - Pcs Control State Machine
Operation Initialize Init Done Fault Detected (From Any State) Fault Reset Fault Calibrate Cal Done Bias Enable Stop Cmd or Shut = False Disabled Bias Enable = False Down (From Any State Below) Permit Enter Service = True & AC Line OK Start Cmd Service Charge...
Page 65: 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 66: Standby
Operation voltage rises above this level or falls below the fault threshold, causing the PCS to go to the Fault state. 6.5.6 Standby Once in the Standby state the PCS is ready for use. An “Exit Standby” command (REG 41743 – Set Operation = 3) must be sent to turn on the PCS, at which point it will transition to the Turn- On Delay state and then to either Online –...
Page 67: 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 68: Island Transfer Wait
Operation 6.5.13 Island Transfer Wait If the PCS is configured to allow seamless transfers from Grid Tie to Grid Forming mode (see REG 42231 – Island Control Input Pin Configuration) and is operating in Grid Tie mode and is about to go Offline due to abnormal grid conditions, it will first transition to this state. The PCS waits in this state to see if the island control pin is about to command a mode change to Grid Forming mode.
Page 69: 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 70: Loss Of Phase
Fault and Warning Conditions 7.1.4 Loss of Phase The PCS monitors the zero crossings for each of the three AC line voltages and will set this warning flag any time a zero crossing does not occur on one or more of the three phases within the period specified by REG 41818 –...
Page 71: 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 72: High Dc Voltage
Fault and Warning Conditions 7.1.15 High DC Voltage The PCS sets this flag if the DC voltage exceeds the threshold specified by REG 41881 – DC Over Voltage Warning Threshold. The flag will remain set until the voltage falls below the warning threshold less REG 41882 –...
Page 73: Frequency-Watt Active
Fault and Warning Conditions 7.1.22 Frequency-Watt Active This warning flag is asserted any time the Frequency Droop grid support function is enabled and is presently overriding the user’s active power command due to a grid over or under-frequency condition. 7.1.23 Limit Active Power This warning flag is asserted any time REG 40325 –...
Page 74: Ac Over-Voltage Ab, Bc, Ca
Fault and Warning Conditions timer-based, and this fault will occur if the current exceeds the threshold for more than 5 seconds. 7.2.2 AC Over-Voltage AB, BC, CA The PCS monitors the AC RMS line-to-line voltage for phases AB, BC, and CA, and will fault if any of the voltages exceed the threshold specified by REG 41874 –...
Page 75: Power Down Error
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 76: Saturation Error A, B, C
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 in order to assist in this discussion.
Page 77: Real Time Clock (Rtc)
Real Time Clock (RTC) contactor. If the rectified line voltage is higher than the internal link voltage when attempting to close the AC contactor, large inrush currents and/or a DC link over-voltage could occur. The PCS’s AC contactor controls will prevent closing the AC contactor under these conditions and will set this fault bit to indicate that this has occurred.
Page 78: Real Time Clock - Date Format
Data Logging Real Time Clock – Date Format The RTC date is stored as a 32-bit data word with the following format: Bits 31 - 24 Bit 23 – 16 Bit 15 - 14 Bit 13 - 0 Month Year Real Time Clock –...
Page 79: Table 12 - Data Logging Parameters
Data Logging Table 12 - Data Logging Parameters Param Data Log Buffer Data Parameter Units Buffer Address Offset Type 42132 PCS State ENUM 42133-42134 PCS Faults Bitfield 42135-42136 PCS Warnings Bitfield 42137 DC Voltage 0.1 V 42138 DC Current 0.1 A 42139 RMS Voltage –...
Page 80: Fault Events
Data Logging Param Data Log Buffer Data Parameter Units Buffer Address Offset Type 42178 Grid Inverter Reactive Current Q 0.1 A 42179 Inverter Output Voltage – D 0.1 V 42180 Inverter Output Voltage – Q 0.1 V 42181 DC Current – Top A 0.1 A 42182 DC Current –...
Page 81: Table 13 - Fault Log Header Data Description
Data Logging Table 13 - Fault Log Header Data Description Data Log Read Buffer Header Data Description Example Notes Address 42132 Time Stamp (MSW) 0x0000 e.g. = 1:48pm, see section 8.2 for 42133 Time Stamp (LSW) 0x300D details on time format. 42134 Date Stamp (MSW) 0x1503...
Page 82: User Events
Data Logging 9.1.2 User Events User Event data logging is intended to capture operating data leading up to and/or after a configurable trigger event. The data logging parameters defined in Table 12 are available for capture. The selected parameters are sampled at the user configured sampling rate and continuously buffered to RAM.
Page 83: Configuring The Trigger Mode
Data Logging If REG 42103 - User Log Sample Period = 10msec, then 159.36 seconds worth of data will be captured. If a 1 second sample period were used instead, then 4 hours, 25 min, and 36 secs of data would be captured. The user can also configure how much of the log is dedicated to post trigger information using REG 42102- User Log Post Trigger Percentage.
Page 84: Reading The Log
Data Logging The value in REG 42111(42117) - User Log Trigger1(2) Value Mask is bitwise AND’ed with the selected variable. The main purpose of this register is to allow selection of a bit within a bitfield register as the trigger source. For example, the H/W DC Over Voltage fault is bit 10 of the PCS Faults Status register.
Page 85: Table 17 - User Log Header Data Description
Data Logging Table 17 - User Log Header Data Description Data Log Read Buffer Header Data Description Example Notes Address 42132 Time Stamp (MSW) 0x0000 e.g. = 1:48pm, see section 8.2 for 42133 Time Stamp (LSW) 0x300D details on time format. 42134 Date Stamp (MSW) 0x1503...
Page 86: Fault History Log
Data Logging Fault History Log The PCS provides two mechanisms for recording the occurrences of the faults defined in REG 41758 – PCS Fault Status and REG 41760 – Factory Fault Status. The first method uses 16-bit counters (one for each fault bit) to store the total number of occurrences for each fault. The second method stores the date and time of the last six occurrences for each fault.
Page 87: Fault Time Stamp Log
Data Logging 9.2.2 Fault Time Stamp Log The PCS records the date and time of the last six occurrences for each individual fault condition. The date and time are stored as 32-bit values, formatted according to sections 8.1 and 8.2. The fault time stamp values can be accessed by first selecting the fault source by writing the fault index to REG 42124 –...
Page 88: Operating History Logs
Data Logging Operating History Logs The operating history log is intended to record critical operating parameters over the life of the PCS. This data includes operating time and min/max values of critical parameters as detailed in the following sections. 9.3.1 Operating Time Log The PCS keeps track of the cumulative time spent operating under a variety of conditions as defined in Table 21.
Page 89 Data Logging Index Parameter Time Operating: 50 < T < 60 °C INV_HS Time Operating: 60 < T < 70 °C INV_HS Time Operating: 70 < T < 80 °C INV_HS Time Operating: 80 < T < 90 °C INV_HS Time Operating: T >...
Page 90 Data Logging Index Parameter Time Operating: 80 < T < 90 °C Time Operating: T > 90 °C Time Operating: V < 300 V Time Operating: 300 < V < 350 V Time Operating: 350 < V < 400 V Time Operating: 400 <...
Page 91 Data Logging Index Parameter Time Operating: -30 < P < -25 kW Time Operating: -25 < P < -20 kW Time Operating: -20 < P < -15 kW Time Operating: -15 < P < -20 kW Time Operating: -10 < P < -5 kW Time Operating: -5 <...
Page 92: Min/Max Log
Data Logging Data Log Buffer Address Operating Time 42132 Time Powered On 42133 42134 Time in Fault State 42135 42136 Time in Disabled State 42137 9.3.2 Min/Max Log The PCS keeps track of minimum and maximum values for the parameters listed in Table 22. Table 22 - Min/Max Parameter Log Parameter Parameters...
Page 93 Data Logging Parameter Parameters Units Data Index Type Max – Heatsink Temp Inverter Phase B °C Max – Heatsink Temp Inverter Phase C °C Max – Estimated IGBT Temp DC/DC °C Max – Estimated IGBT Temp Inverter °C Max – Cabinet Temperature °C Max –...
Page 94: Communications Interface
Communications Interface Data Log Buffer Address Parameter 42132 Min – AC Active Power (P) 42133 Min – AC Reactive Power (Q) 42134 Min – AC Frequency (LSW) 42135 Min – AC Frequency (MSW) 42136 Min – DC Current 10. Communications Interface The PCS is equipped with a Modbus RS485 communications interface.
Page 95: Physical Layer
Communications Interface error related to the Modbus function requested occurs, the field contains an exception code that the server application can use to determine the next action to be taken. For example, a client can read the ON / OFF states of a group of discrete outputs or inputs or it can read/write the data contents of a group of registers.
Page 96: Rtu Transmission Mode
Communications Interface 10.3 RTU Transmission Mode Modbus supports two modes of transmission, ASCII (American Standard Code for Information Interchange), and RTU (Remote Terminal Unit). The PCS uses the more efficient RTU transmission mode. The Modbus specification defines the message frame or Serial Line PDU “Protocol Data Unit”...
Page 97: Data Field
Communications Interface 10.3.4 Data Field The data field will vary in length according to which function is specified. This field contains information required by the slave to perform the specific function or it contains data collected by the slave in response to a query. Modbus uses a ‘Big-Endian’...
Page 98: Exception Response
Communications Interface 10.3.6 Exception Response There are two possible exception modes the PCS must handle: • The PCS (slave) receives the request, but detects a communication error (parity, LRC, CRC, ...), no response is returned. The host will eventually process a timeout condition for the request.
Page 99: Preset Single Command Register (Function Code 06)
Communications Interface Response PDU: Error PDU: Here is an example request to read REG 40130-40132 – AC Current A, AC Voltage AB, AC Voltage AN , from slave 10: Request Response Field Name (Hex) Field Name (Hex) Slave Address Slave Address Function Function Starting Address Hi...
Page 100: Write Multiple Registers (Function Code 16)
Communications Interface Response PDU: Error PDU: Here is an example request to write REG 40339 – Set Active Power Percent Setpoint with a value of 12.5% on Slave 10: Request Response Field Name (Hex) Field Name (Hex) Slave Address Slave Address Function Function Register Address Hi...
Page 101: 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 102: Register Properties
Oztek PCS - Alarms 64304 Oztek PCS - Firmware Update 64305 Oztek PCS - Datalogging 64308 Oztek PCS - Grid Forming Configuration & Control 0xFFFF End Model 11.1 Register Properties 11.1.1 Register Number The register Number listed in the tables below represents the Modbus identifier for each parameter.
Page 103: Access Level
SunSpec Device Information Models 11.1.2 Access Level The access level for each register is defined as follows: W = Writeable – the parameter is writable by the user R = Readable – the parameter is readable by the user O = Operating – the parameter may NOT be written while the PCS is ON, writes to any parameter with this indicator will be ignored if the PCS is ON 11.1.3 SunSpec Data Formats...
Page 104: Sunspec Data Type U32
SunSpec Device Information Models S16 Format Range Not Implemented Value Integer -32767 … 32767 0x8000 Sunssf -10 … 10 0x8000 11.1.6 SunSpec Data Type U32 U32 represents all unsigned, 32-bit integer values and consist of two registers in big-endian order. U32 Format Range Not Implemented Value...
Page 105: Sunspec Data Type String
SunSpec Device Information Models U32 Format Range Not Implemented Value Integer 0 … 9,223,372,036,854,775,806 0xFFFF FFFF FFFF FFFF Acc32 1 … 9,223,372,036,854,775,807 0x0000 0000 0000 0000 ENUM 0 … 9,223,372,036,854,775,806 0xFFFF FFFF FFFF FFFF Bitfield 0 …. 0x7FFF FFFF FFFF FFFF 0xFFFF FFFF FFFF FFFF 11.1.9 SunSpec Data Type String...
Page 106: Curve Sets
SunSpec Device Information Models Table 26 - 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) DER Frequency Droop (Freq-Watt) DER Watt-VAR Note that Model 711 –...
Page 107: Register Models
11.3 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 unimplemented SunSpec registers will return the “Not Implemented”...
Page 108: Sunspec Identifier
Factor Type Default Level (Reg #) Header: 40003 Model Identifier 40004 Model Length - # of 16-bit registers to follow Fixed Block: “Oztek 40005-40020 Manufacturer ASCII Corp.” “OZpcs- 40021-40036 Model ASCII RS40-FB1” Version: Byte 10..0: Firmware Revision Byte 11..12: Release Code: ‘-R’ – Production Release...
Page 109: Sunspec Model 17 Registers - Serial Interface
SunSpec Device Information Models 11.3.3 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 110 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) DER Alarm Bitfield: Bit 1 = DC Over Voltage Bit 10 = AC Over Voltage Bit 2 = AC Disconnect Bit 11 = AC Under Voltage Bit 3 = DC Disconnect Bit 13 = Under Temperature 40091...
Page 111: 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 112 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 40252 Maximum Apparent Power Charge Rate 10 VA 40287 4000 40253 Maximum Apparent Power Discharge Rate 10 VA 40287 4000 40254 AC Voltage Nominal Rating 0.1 Vrms 40289 4800...
Page 113: 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 114: Sunspec Model 704 Registers - Der Ac Controls
SunSpec Device Information Models 11.3.7 SunSpec Model 704 Registers – DER AC Controls Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 40311 Model Identifier 40312 Model Length - # of 16-bit registers to follow Fixed Block: Power Factor Enable - Injecting Watts (see Note 2 below): 40313...
Page 115: 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 116 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Repeating Block #1: 40393 Volt-VAR Curve 1: Number of Active Points in Array Volt-VAR Curve 1: VAR Dependent Reference: 0 = % Max Watts (REG 40266) 40394 1 = % Max VARs (REG 40272) ENUM...
Page 117: 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 118 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 40457 Volt-Watt Adopt Curve Result: 0 = In Progress; 1 = Completed, 2 = Failed ENUM 40458 Volt-Watt Number of Curve Points Supported 40459 Volt-Watt Number of Curves Supported 40465...
Page 119: Sunspec Model 707 Registers - Der Low Voltage Trip (Lvrt)
SunSpec Device Information Models 11.3.10 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 120: Sunspec Model 708 Registers - Der High Voltage Trip (Hvrt)
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Curve 1: Momentary Cessation Data 40602 LVRT Momentary Cessation Curve 1: Number of Active Points 40603 LVRT Momentary Cessation Curve 1: Point 1 – Voltage (%V 0.1 % 40525 40604...
Page 121 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 122: Sunspec Model 709 Registers - Der Low Frequency Trip (Lfrt)
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) HVRT Momentary Cessation Curve 1: Points 3 thru 12 – Voltage (%V 0.1 % 40758 40842- 1000 40870 HVRT Momentary Cessation Curve 1: Points 3 thru 12 – Duration 0.01 Sec 40759 Repeating Block #2:...
Page 123 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 124: Sunspec Model 710 Registers - Der High Frequency Trip (Hfrt)
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 41143 - LFRT Must Trip Curve 2: Points 1 thru 12 – Duration 0.01 Sec 40992 41189 Note 120000 Curve 2: Momentary Cessation Data 41240 LFRT Momentary Cessation Curve 2: Number of Active Points in Array Note...
Page 125 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 126: Sunspec Model 711 Registers - Der Frequency Droop (Freq-Watt)
SunSpec Device Information Models 11.3.14 SunSpec Model 711 Registers – DER Frequency Droop (Freq-Watt) Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 41594 Model Identifier 41595 Model Length - # of 16-bit registers to follow Fixed Block: 41596 Freq-Watt Module Enable: 0 = Disable, 1 = Enable...
Page 127: Sunspec Model 712 Registers - Der Watt-Var
SunSpec Device Information Models 11.3.15 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 128: Sunspec Model 714 Registers - Der Dc Measurement
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 0.01% 41641 41655 Watt-VAR Curve 1: Point 5 - VAR (%MAX, see REG 41643) 0.01% 41640 41656 Watt-VAR Curve 1: Point 6 - Watts (%W , REG 40266) 10000 0.01%...
Page 129: Sunspec Model 715 Registers - Der Control
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) sunssf 41705 Scale Factor - DC Current sunssf 41706 Scale Factor - DC Voltage sunssf 41707 Scale Factor - DC Power 41709 Scale Factor - DC Temperature sunssf DC Port 1: Type: 0 = PV...
Page 130: 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. 11.3.18 Oztek Extension Model 64340 Registers – Control and Status Scale Data Factory Access...
Page 131 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 132 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) PCS Warning Status: Bit 0 = High AC Current A Bit 16 = Temperature Warning Bit 1 = High AC Current B Bit 17 = Reserved Bit 2 = High AC Current C Bit 18 = Reserved Bit 3 = High DC Current...
Page 133 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 134 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Fan Status: Bit 0 = Fan 1 Not Spinning 41766 Bit 1 = Fan 2 Not Spinning ENUM Bit 2 = Fan 3 Not Spinning All Others = Reserved Register Operation Status - Updated after every register read or write: 0 = Operation completed successfully...
Page 135: Oztek Extension Model 64341 Registers - Configuration
41800 Scale Factor – Maximum DC Current sunssf 41801 Scale Factor - Grid Current sunssf 41802 Scale Factor - Grid Voltage sunssf 11.3.19 Oztek Extension Model 64341 Registers – Configuration Scale Data Factory Access Number Description Units Factor Type Default...
Page 136 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Default Grid Low Frequency Threshold: 41822 If the LFRT module is disabled (REG 49086) then this register is used to 0.01 Hz 41855 5850 3000 6000...
Page 137: Oztek Extension Model 64302 Registers - Alarms
For applications that do not require the higher Active Ride Through V , or where 3 Harmonic Injection is undesirable, set AC Connection Type to “0”. Contact Oztek technical support for further details. 11.3.20 Oztek Extension Model 64302 Registers – Alarms...
Page 138 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) AC Over Voltage Fault Threshold (line-to-line) 0.1 Vrms 41920 5900 5900 41874 AC Over Voltage Warning Threshold (line-to-line) 0.1 Vrms 41920 5760 5900 41875 41920 41876...
Page 139 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Alarm Output 1 - PCS State Mask: Setting the mask bitfield to “1” will cause the Alarm output to be asserted while the PCS is in that operating state. Setting multiple mask bits to “1” logically OR’s them together.
Page 140: 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 11.3.21 Oztek Extension Model 64304 Registers – Firmware Update Scale Data Factory Access Number Description Units Factor Type...
Page 141: Oztek Extension Model 64305 Registers - Datalogging
CRO_WRD3 … CRO_WRD125 65535 42065 Firmware Update – Control Receive Object, Word 126 (CRO_WRD126) 42066 65535 MSB = Data Byte 251; LSB = Data Byte 250 11.3.22 Oztek Extension Model 64305 Registers – Datalogging Scale Data Factory Access Number Description Units...
Page 142 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 143 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Real Time Clock – Get Time Returns the Time in the following format: BITS [7..0] = Hours BITS [15..8] = Minutes BITS [23..16] = Seconds 42091 BITS [30..24] = not used ENUM...
Page 144 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 9.1.2.2 for 30000 details on selecting the sample period. User Log Variable Selection (LSW) 0xFFFF 42104...
Page 145 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) User Log Trigger 2 Value Mask 0xFFFF 42117 See section 9.1.2.4 for details. FFFF User Log Trigger 2 Value 0xFFFF 42119 See section 9.1.2.4 for details. FFFF User Log Status: 0 = Idle...
Page 146: 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 11.3.23 Oztek Extension Model 64308 Registers – Grid Forming Configuration & Control Scale Data Factory Access Number Description Units...
Page 147 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 42222 0.01 Hz/s 42258 1000 Grid Form Frequency Command Slew Rate 42223 0.1 %W 42256 -1000 1000 Grid Form Active Power Offset Turn-On Default 42256 42224 Grid Form Active Power Offset Maximum...
Page 148: Sunspec Model 0Xffff Registers - End Model
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 42251 Seamless Transfer to Island Voltage Ramp Up Delay 42264 1000 42254 Scale Factor – Grid Form Voltage Command sunssf 42255 Scale Factor – Grid Form Frequency Command sunssf 42256 Scale Factor –...
Page 149: Servicing The Unit
Removing bias power before the update is complete can corrupt the non-volatile, configuration memory. The PCS supports in-system firmware updates. The Oztek-provided Power Studio™ Tool can be used to perform the update, or alternatively, the customer can incorporate the update functionality into their system controller.
Page 150: Oztek Power Studio™ Tool
Oztek Extension Model 64304 Registers – Firmware Update. 14. Oztek Power Studio™ Tool The Oztek Power Studio™ tool is a Microsoft Windows based Graphical User Interface (GUI), as shown in Figure 33, which can be used to easily configure and control the PCS. The tool communicates with the unit using Modbus and provides a simple, intuitive user interface.
Page 151 Oztek Power Studio™ Tool Figure 33 - Oztek Power Studio For detailed information and operating instructions, please refer to UM-0052 Oztek Power Studio™ User’s Manual. Publication UM-0075...
Page 152: Appendix A - Records Of Certification
Appendix A – Records of Certification 15. Appendix A – Records of Certification OZpcs-RS40 SB 40kW Energy Storage PCS User’s Manual...
Page 153 Appendix A – Records of Certification Publication UM-0075...
Page 154: 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 155 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.
Page 156: 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 157: 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 158 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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