Page 1 35kW Energy Storage Power Conversion System Rack Scale Series USER MANUAL UM-0076 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-RS35 power conversion system (PCS), that shall be followed during installation and maintenance of the PCS. The Ozpcs-RS35 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 (Indoor use) ................. 6 Mechanical Specifications ......................
Page 6 Table of Contents 6.2.4.1 Constant Reactive Power Control................. 33 6.2.4.2 Power Factor Control ....................34 6.2.4.3 Volt/VAR Control ......................35 6.2.4.4 Watt/VAR Control ......................37 6.2.5 Output Power and Current Limiting ..................38 6.2.6 Unbalanced Voltage Compensation ..................38 6.2.6.1 Negative Sequence Current Control ................
Page 7 Table of Contents 7.1.10 Grid Out of Tolerance (OOT) ....................58 7.1.11 Resume – Delay ........................58 7.1.12 Island Detected ........................58 7.1.13 PLL Not Locked ........................58 7.1.14 Loss of Phase ......................... 58 7.1.15 Temperature Warning ......................59 7.1.16 Fan Warning .......................... 59 7.1.17 Bias Supply Warning ......................
Page 8 Table of Contents 9.1.2.2 Setting the Sample Period and Post Trigger Size ............70 9.1.2.3 Parameter Count Versus Sample Period ..............71 9.1.2.4 Configuring the Trigger Mode ..................71 9.1.2.5 Configuring Triggers ..................... 72 9.1.2.6 Reading the Log ......................73 Fault History Log ........................
Page 9 11.3.21 Oztek Extension Model 64304 Registers – Firmware Update ..........131 11.3.22 Oztek Extension Model 64305 Registers – Datalogging ............132 11.3.23 Oztek Extension Model 64308 Registers – Grid Forming Configuration & Control .... 137 11.3.24 SunSpec Model 0xFFFF Registers – End Model ..............139 12.
Page 10 Figure 28 - Island Mode Capable System Block Diagram ................46 Figure 29 - PCS Control State Machine ....................... 51 Figure 30 - RTU Message Frame (PDU) Format ..................85 Figure 31 - Oztek Power Studio GUI ...................... 142 OZPCS-RS35 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) ..................... 16 Table 4 - Compatible Compression Lugs (AC) ..................... 18 Table 5 - LED Functions - Normal Operation ....................20 Table 6 - LED Functions - Bootloader Operation ..................
Page 13: Table 1 - Revision History
Table 1 - Revision History Date Description of Change Author • Initial Release 3/20/2024 Hodgdon • Misc typo corrections to Volt/VAR register table 4/10/2024 Hodgdon • Changed RS485 signal names from A/B to +/- for clarity 4/17/2024 Hodgdon Publication UM-0076...
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 Device Information Model Specification V1-1-final SunSpec Alliance SunSpec DER Information Model Specification V1-0 SunSpec Alliance SunSpec_Information_Model_Reference_20211209.xls...
Page 15: General Safety
Introduction Acronym Full Text Equivalent 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
2. Ensure sufficient cooling for safe operation of the PCS. 3. The PCS is not field repairable. Never attempt to repair a malfunctioning unit; contact Oztek for a replacement. 4. Each PCS is sealed with a warranty void sticker across the top cover which will tear if the cover is removed.
Page 17: Electrical Specifications
Specifications Electrical Specifications DC Input DC Input Voltage Range 400 to 800 V 92 A (continuous) DC Input Current 120 A (overload, max 10 seconds) 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 150 Amps DC Input Impedance...
Page 18: Environmental Specifications (Indoor Use)
Specifications • < 15W: DISABLED state, fans not running Standby Power • < 35W: STANDBY state, contactors closed, fans at minimum speed Inrush Current < 2.5 A, internal soft start provided • 3.5 sec: time from Bias Enable input asserted to when PCS transitions to DISABLED state •...
Page 19: Mechanical Specifications
Specifications Mechanical Specifications Cooling Forced air cooled by internal fan. Weight 97 lb Dimensions 19” rack, 3.0U, see section 2.5 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 Parameter...
Page 20: Figure 3 - Mechanical Outline - Side View
Specifications Figure 3 - Mechanical Outline - Side View Figure 4 - Mechanical Outline - Rear View OZPCS-RS35 Energy Storage PCS User’s Manual...
Page 21: Temperature Based Power Derating
Specifications Figure 5 - Mechanical Outline - Top View Temperature Based Power Derating The figures below show the continuous and peak operating temperature regions. The green shaded regions represent the continuous safe operating zone. PCS operation should be limited to this region to meet rated life and not affect the warranty period. The yellow shaded region represents the intermittent safe operating zone.
Page 22: Ac Voltage Based Power Derating
Specifications CAUTION 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. Output Power vs Ambient Temperature "F"...
Page 23: Elevation Based Power Derating
Specifications Figure 7 - AC Line Voltage Derating Elevation Based Power Derating Output Power vs Ambient Temperature 120% 100% Ambient Temperature (C) < 1000M 1500M 3000M Figure 8 - Elevation Derating Curves Publication UM-0076...
Page 24: Maintenance
Specifications 2.10 Maintenance The PCS has been designed to require no maintenance over its operating life. 2.11 Regulatory Specifications 2.11.1 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 pending…) (certification...
Page 25: 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 26: Installation
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 27: 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 28: 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-RS35 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 29: Ac Connection
Installation Wire Size Manufacturer Panduit LCAN1/0-56-X LCA1/0-56-X Panduit LCA1-56-E Panduit LCA2-56-Q 3, 4 Panduit LCA4-56-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 11. Connections should be tightened to a specified torque of 5.7 Nm (50 in-lb) +/- 5%.
Page 30: Figure 12 - Ac Terminal Block Connections
Installation 1. For all AC cable connections, use appropriately sized copper wire 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 31: Supported Ac Connection Types
Installation 4.2.2.1 Supported AC Connection Types The PCS supports three AC connection configurations as described below. For proper operation, REG 41829 – AC Connection Type must be set to the correct value and the physical connections at the AC terminal block must match the requirements described below. •...
Page 32: Configuration
Interface 3. When using a single unit or if the unit is the last in a string of daisy-chained units, attach a terminating jumper dongle to the unused connector, J1 or J2. The dongle should jumper pin 11 to 12 to provide termination for the Modbus communications link. 4.2.4 Configuration The OZpcs-RS35 is shipped from the factory configured for a nominal line voltage of 208 V a frequency of 60 Hz.
Page 33: Low Voltage I/O
Interface Table 6 - LED Functions - Bootloader Operation Color Label Location Meaning Green POWER ON Front Panel Blinking: Bootloader is running Yellow STANDBY Front Panel On Solid: PCS is connected to the Host Yellow OPERATING Front Panel Rapid Blink: Data exchange with Host in progress FAULT Front Panel On Solid: Bootloader error, e.g.
Page 34: Modbus Rs-485
Interface Pin 12 Pin 1 Pin 13 Pin 24 Figure 15 - J1/J2 Pin Locations 5.2.1 Modbus RS-485 The RS-485 interface requires three signals, “+” and “-” data signals and Ground. RS-485 is a multi-drop data bus; i.e. multiple devices can all tie directly onto the same physical signals. For proper signal integrity, the data bus must be terminated at both ends.
Page 35: Inputs
Interface 5 24 OzPCS #3 RS485 - RS485 5 23 Master Controller OzPCS #1 OzPCS #2 Figure 16 - 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 17.
Page 36: Island Control Input
Interface CAUTION The PCS’s internal bias supply is generated from the high voltage DC battery input. It is recommended 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.
Page 37: Operation
Operation Alarm Output Mask Register Status Register 41901 Alarm Output 1 – DER Alarm Bit Mask 40091 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 –...
Page 38: 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 39: 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 40: 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 41: 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 42: 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 43: 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 44: Prioritization Of Active Power Limiting Functions
Operation Table 9 - Frequency-Watt Control Equations Under-Frequency Conditions Over-Frequency Conditions ( �� ) − �� − ( �� − �� + �� = �� = �� − �� ∙...
Page 45: Reactive Power Control
Operation 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 • Power Factor Control – reactive power is controlled based on the user-specified power factor and the present active power output •...
Page 46: Power Factor Control
Operation power absorbed from the grid (under-excited). This is a non-volatile register, and the last value written by the user will be retained when power cycling the PCS, and each time the PCS is turned on. 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 –...
Page 47: Volt/Var Control
Operation When decreasing the power factor setpoint (i.e. increasing reactive power), if the resulting reactive power is greater than the maximum reactive power value (VAR , REG 40272), it will be limited to VAR , the active power output will be reduced to maintain the specified power factor, and the AC Power Limit warning bit is set in REG 41756 –...
Page 48: Figure 23 - Volt/Var Configuration
Operation Positive Power = Injected to Grid (over-excited) Voltage (% of V Negative Power = Absorbed from Grid (under-excited) Figure 23 - Volt/VAR Configuration 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.
Page 49: Watt/Var Control
Operation 6.2.4.4 Watt/VAR Control The PCS can be configured to inject or absorb reactive power as a function of its active power output. 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 11.3.15.
Page 50: Output Power And Current Limiting
Operation When operating in Watt-VAR 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 configurable using the associated Power Priority register in the curve settings. 6.2.5 Output Power and Current Limiting As discussed in the previous section, when the combined active and reactive power commands exceed the PCS’s maximum apparent power setting (VA...
Page 51: Negative Sequence Current Limit And Priority
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 52: Figure 25 - Ride Through Cessation And Trip Curves
Operation one representing the “must trip” criteria and one representing the “momentary cessation” criteria. Figure 25 below shows a generic example of the trip and cessation curves. If the grid voltage/frequency exceeds the inner-most trip thresholds but has not yet exceeded the specified cessation or trip durations, i.e.
Page 53: Low/High Voltage Ride Through
Operation 6.2.8.1 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 voltage conditions and one for high voltage conditions.
Page 54 Operation CAUTION The points in the voltage trip curve arrays must adhere to the following rules. Failure to meet these restrictions will result in an Invalid User Configuration fault. The offending table is reported in REG 41762 – User Configuration Error Status. •...
Page 55: Low/High Frequency Ride Through
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 26 - 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.
Page 56: Table 11 - Ieee 1547-2018 Default L/Hfrt Trip Settings
Operation the registers found in the SunSpec “DER Low/High Frequency Trip” Models 709 and 710, respectively (see sections 11.3.12 and 11.3.13). See section 11.2, “SunSpec Curve-Based Register Models” for general information on creating and modifying curves. These models provide up to 12 points to create each curve. It is not required that all 12 points be defined and used - a separate register is used to specify the actual number of points defined in each array.
Page 57: 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 27 - Frequency Ride Through IEEE 1547-2018 Configuration The Low/High Frequency Ride Through (L/HFRT) “momentary cessation”...
Page 58: 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 28 - Island Mode Capable System Block Diagram When operating in Grid Forming mode, the PCS accepts voltage and frequency commands from the user.
Page 59: 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 60: 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 61: 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 62: 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 63: 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 64: 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 65: 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 66: 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 67: 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 68: 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 69: Low Dc Voltage
Fault and Warning Conditions 7.1.4 Low DC Voltage The PCS sets this flag if the DC voltage falls below the threshold specified by REG 41878 – DC Under Voltage Warning Threshold. The flag will remain set until the voltage rises above the warning threshold plus REG 41879 –...
Page 70: Ac Current Overload
Fault and Warning Conditions Reactive Power Control” for details). This bit is also set when operating in Power Factor Mode (REG 40313/40319 – Power Factor Enable – Injecting/Absorbing Watts = 1) and the calculated reactive power command exceeds the maximum reactive power setpoint configured in REG 40272/40273. 7.1.9 AC Current Overload Regardless of operating mode (Grid Tie or Grid Forming), the PCS attempts to avoid fast over- current trip events by employing a cycle-by-cycle current limiting technique that turns off the...
Page 71: Temperature Warning
Fault and Warning Conditions 7.1.15 Temperature Warning The PCS monitors several internal temperature sensors and will set this warning bit under various high and low temperature conditions. When this warning bit is set, REG 41764 – Temperature Status can be read to determine the source of the warning condition(s). Possible warning conditions are: •...
Page 72: Tvs Error
Fault and Warning Conditions 7.1.20 TVS Error The PCS uses an AC filter when connected to the AC line voltage. This filter contains transient voltage suppression (TVS) devices to protect the converter from voltage spikes that may occur on the AC terminals. The PCS monitors the health of these TVS devices to ensure that they are still working properly.
Page 73: High Dc Link Voltage
Fault and Warning Conditions this occurs, the PCS will only log the maximum allowable number of parameters. See section 9.1.2.2 for details on the number of allowable parameters to log versus sample rate. 7.1.28 High DC Link Voltage This warning flag indicates that the PCS’s internal DC link voltage is higher than the expected maximum value.
Page 74: H/W And S/W Inverter Over-Current A, B, C
Fault and Warning Conditions Each fault condition is latched and reported in REG 41758 – PCS Fault Status. The PCS can also indicate the presence of a fault condition by asserting an isolated output signal any time one or more latched fault bits are present. See section 5.2.3 for details on how to configure the isolated outputs.
Page 75: 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/Under-Voltage The PCS provides fast hardware protection for DC over-voltage and under-voltage conditions. It also monitors the DC voltage and will fault if it falls outside the thresholds specified by REG 41880 –...
Page 76: Temperature Faults
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) software-based protection for the total combined link voltage. These bits are set any time one of these over voltage conditions occur. • DC Link Voltage Imbalance –This fault occurs if the difference between the top and bottom DC Link voltages exceed the maximum imbalance threshold.
Page 78: Real Time Clock - Date Format
Data Logging If the RTC backup battery is discharged, or if the date and/or time in the RTC are invalid, the PCS will assert the RTC Warning bit in REG 41756 – PCS Warning Status. The correct date and time can be loaded into the RTC as described in section 8.3. The RTC Warning bit will remain set until the PCS bias power is cycled.
Page 79: Event Data Logging
Data Logging Event Data Logging The Event Data logging feature is intended to capture operating data leading up to, and shortly after an event. Events can be the assertion of a system fault or a user-configured “trigger” event. For a detailed explanation of data types, please see sections 11.1.3 - 11.1.9. Table 12 - Data Logging Parameters Param Data Log...
Page 80: Fault Events
Data Logging Param Data Log Buffer Data Parameter Units Buffer Address Offset Type 42174 Heatsink Temp – Phase A Bottom °C 42175 Heatsink Temp – Phase B Bottom °C 42176 Heatsink Temp – Phase C Bottom °C 42177 Heatsink Temp – Phase A Top °C 42178 Heatsink Temp –...
Page 81: Table 13 - Fault Log Header Data Description
Data Logging Once the desired log has been selected, the header information can be read by writing a “1” to REG 42098 – Fault Log Get Header, followed by a read of Data Log Buffer Registers 42132 – 42139. Table 13 defines the header data and format as read from the Data log buffer registers along with example data.
Page 82: User Events
Data Logging 42099 - Fault Log Get Selected Record, and then reading the selected data from the corresponding Data Log Buffer Registers. 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.
Page 83: Parameter Count Versus Sample Period
Data Logging sample, K, would be 4 since DC Voltage and Current are 16-bit parameters and PCS Faults is a 32-bit parameter. If REG 42103 - User Log Sample Period = 10 (or 0.1 ms * 10 = 1ms), then 15.936 seconds worth of data will be captured.
Page 84: Configuring Triggers
Data Logging Trigger 1 conditions must be True for the trigger to be asserted. Mode 2: Dual OR Trigger Sampling is controlled by REG 42101 - User Log Start/Stop as well as both Trigger 1 and 2. Register 42101 must equal 1 and either Trigger 1 conditions OR Trigger 2 conditions must be True for the trigger to be asserted.
Page 85: Reading The Log
Data Logging Table 16 - User Log Trigger Configuration Example Reg # Reg Name Value Description 42108 Trigger Mode Dual OR Trigger 42110 Trigger1 Variable Selection PCS Faults 42111 Trigger1 Value Mask 0x00000400 Select H/W DC Over Voltage Fault bit 42109 Trigger1 Compare Type Equal to 42113 Trigger1 Trigger Value...
Page 86: 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 87: Fault Count Log
Data Logging Table 19 - Fault History Index Assignment Index Associated Fault Bit Fault Condition REG 41758 Bit 0 H/W Over Current A REG 41758 Bit 1 H/W Over Current B ··· ··· ··· REG 41758 Bit 31 AC Current Overload Trip REG 41760 Bit 0 H/W AC Over Current A - bot REG 41760 Bit 1...
Page 88: Operating History Logs
Data Logging Writing a “1” to REG 42126 – Fault History Log Get History Data for Specified Fault will load the fault time stamps into the Data Log Buffer Registers. Table 20 illustrates how the time stamp data is arranged within the buffer. Note that the buffer is always loaded with six date and time stamps.
Page 89: Table 21 - Operating Time Parameter Log
Data Logging Table 21 - Operating Time Parameter Log Index Parameter Time Powered On Time in Fault State Time in Disabled State Time in Charge Wait State Time in Charging State Time in Standby State Time in Turn-on Delay State Time in Online –...
Page 90 Data Logging Index Parameter Time Operating: 650 < V < 700 V Time Operating: 700 < V < 750 V Time Operating: 750 < V < 800 V Time Operating: 800 < V < 850 V Time Operating: V > 850 V Time Operating: I <...
Page 91 Data Logging Index Parameter Time Operating: 150 < V < 170 V AC_C Time Operating: 170 < V < 190 V AC_C Time Operating: 190 < V < 210 V AC_C Time Operating: 210 < V < 230 V AC_C Time Operating: 230 <...
Page 92 Data Logging Index Parameter Time Operating: I > 120 A AC_C Time Operating: P < -45 kW Time Operating: -45 < P < -40 kW Time Operating: -40 < P < -35 kW Time Operating: -35 < P < -30 kW Time Operating: -30 <...
Page 93: Min/Max Log
Data Logging specifies the number of values to read. After writing to register 42128, the times can be read from the corresponding Data Log Buffer Registers. For example, to read “Time Operating: P > 45kW”, write 0x0199 to register 42128 and then read registers 42132 and 42133 for the 32-bit time in secs, where 42132 holds the MSW and 42133 the LSW.
Page 94 Data Logging Parameter Parameters Units Data Index Type Max – 24V Bias 0.001 V Max – Heatsink Temp Phase A Bottom °C Max – Heatsink Temp Phase B Bottom °C Max – Heatsink Temp Phase C Bottom °C Max – Heatsink Temp Phase A Top °C Max –...
Page 95: 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 96: 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 97: 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 98: 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 99: 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 100: 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 101: 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 102: 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 103: 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 104: 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 105: 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 106: 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 107: 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 108: 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 109: 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 RS35-FB1” Version: Byte 10..0: Firmware Revision Byte 11..12: Release Code: ‘-R’ – Production Release...
Page 110: 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 111 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 112 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 40153 40198 AC Current - Phase B 0.1 Arms 40154 40199 AC Voltage - BC 0.1 Vrms 40155 AC Voltage - BN 0.1 Vrms 40199 40172 Active Power - Phase C...
Page 113: Sunspec Model 702 Registers - Der Capacity
SunSpec Device Information Models 11.3.5 SunSpec Model 702 Registers – DER Capacity Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 40240 Model Identifier 40241 Model Length - # of 16-bit registers to follow Fixed Block: 40242 Active Power Max Rating at Unity Power Factor 10 W...
Page 114 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Supported Control Modes: Bit 0 = Max Watt Bit 7 = LVRT Bit 1 = Fixed Watt Bit 8 = HVRT Bit 2 = Fixed VAR Bit 9 = Watt-VAR 40263 Bitfield...
Page 115: Sunspec Model 703 Registers - Enter Service
SunSpec Device Information Models 11.3.6 SunSpec Model 703 Registers – Enter Service Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 40292 Model Identifier 40293 Model Length - # of 16-bit registers to follow Fixed Block: 40294 Permit Enter Service: 0 = Disabled;...
Page 116 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Power Factor Enable - Absorbing Watts (see Note 2 below): 40319 ENUM 0 = Disabled; 1 = Enabled 40325 Limit Max Active Power Percent Enable: 0 = Disabled; 1 = Enabled ENUM 40326 Limit Max Active Power Percent Setpoint...
Page 117: Sunspec Model 705 Registers - Der Volt-Var
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Units include applied scale factor register The PCS does not provide independent Power Factor Enables for Injecting versus Absorbing active power – values written to 40313 will also be written to 40319 and vice versa Positive value indicates active power delivered to the grid Positive value indicates reactive power delivered to the grid (over-excited, phase current lags phase voltage)
Page 118 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: Dependent Variable Ref: 0 = % Max Watts (REG 40266) 40394 1 = % Max VARs (REG 40272) ENUM...
Page 119: 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: Dependent Variable Ref: 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 120 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 121: 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 122: 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 123 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 124: 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 125 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 126: 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 127 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) HFRT Must Trip Curve 1: Point 1 – Frequency 0.01 Hz 41296 41300 6300 HFRT Must Trip Curve 1: Point 1 – Duration 0.01 Sec 41297 41302...
Page 128: Sunspec Model 711 Registers - Der Frequency Droop (Freq-Watt)
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Units include applied scale factor register Curve 2 data defaults to the latest Curve 1 values at POR - see section 11.2 for details on how to manage curve settings 11.3.14 SunSpec Model 711 Registers –...
Page 129: Sunspec Model 712 Registers - Der Watt-Var
SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 41606 41622 Freq-Watt Controller 2: Over-Frequency Change Ratio Note 5000 41606 41623 Freq-Watt Controller 2: Under-Frequency Change Ratio Note 5000 41624 Freq-Watt Controller 2: Response Time 0.001 s 41607 Note...
Page 130 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) ENUM 41644 Watt-VAR Curve 1: Power Priority: 0 = Active; 1 = Reactive ENUM 41645 Watt-VAR Curve 1: Read Only: 0 = Read/Write; 1 = Read Only 41646 Watt-VAR Curve 1: Point 1 - Watts (%W , REG 40266)
Page 131: Sunspec Model 714 Registers - Der Dc Measurement
SunSpec Device Information Models 11.3.16 SunSpec Model 714 Registers – DER DC Measurement Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 41690 Model Identifier 41691 Model Length - # of 16-bit registers to follow Fixed Block: 41694 DC Port Count...
Page 132: 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 133 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 134 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 = Bias Supply Warning Bit 2 = High AC Current C Bit 18 = Reserved Bit 3 = High DC Current...
Page 135 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Factory Fault Status: Bit 0 = H/W AC Over Current A - bot Bit 13 = H/W Link Over Voltage - bot Bit 1 = H/W AC Over Current B - bot Bit 14 = Link Over Voltage Bit 2 = H/W AC Over Current C - bot Bit 15 = Link Voltage Imbalance...
Page 136 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Register Operation Status - Updated after every register read or write: 0 = Operation completed successfully 1 = Illegal/unsupported register ID 2 = Write was attempted to a Read-Only register 3 = Read was attempted from a Write-Only register 41767 ENUM...
Page 137: Oztek Extension Model 64341 Registers - Configuration
Bits 11-31 = Reserved Bias Supply Status – any bit set to a ‘1’ in this register indicates that an internal 41788 Bitfield bias supply is out of tolerance. Contact Oztek for additional details. 41789 Software Image CRC – Inverter Controller 41791 Software Image CRC –...
Page 138 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 41814 Maximum DC Charge Current - POR Default 0.1 A 41856 1000 1000 41815 Maximum DC Discharge Current - POR Default 0.1 A 41856 1000 1000...
Page 139 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Resume From Cessation Ramp Time: 41827 Time to ramp to the pre-disturbance power setpoints when turning on 41860 10000 from the Ride Through Passive state. Anti-Island Detector Mode Select: 1 = Keep Running on Island Detect 41828...
Page 140: Oztek Extension Model 64302 Registers - Alarms
SunSpec Device Information Models 11.3.20 Oztek Extension Model 64302 Registers – Alarms Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 41869 Model Identifier 64302 41870 Model Length - # of 16-bit registers to follow...
Page 141 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Alarm Output 2 - PCS Warning Mask The bit fields correspond to REG 41756 – PCS Warning Status. Setting a 0xFFFF 0xFFFF 41889 Bitfield mask bitfield to “1”...
Page 142 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Alarm Output 2 - 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 143: Oztek Extension Model 64304 Registers - Firmware Update
Scale Factor – AC Current sunssf Scale Factor – DC Voltage sunssf 41922 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 144: 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 145 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Real Time Clock – Set Time This register is used to set the time using the following format: BITS [7..0] = Hours BITS [15..8] = Minutes BITS [23..16] = Seconds 0x003B 42087...
Page 146 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Fault Log Get Header: 0 = No Action; 1 = Fetch Data Get the header for the log selected in register 42097. Header data will be 42098 ENUM placed in the Data Log Read Buffer registers starting at 42132.
Page 147 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) User Log Trigger 1 Variable Selection 42110 See section 9.1.2.5 for details. User Log Trigger 1 Value Mask 0xFFFF 42111 See section 9.1.2.5 for details. FFFF User Log Trigger 1 Value 0xFFFF...
Page 148 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Fault History Log Set Fault Index: Selects a fault event from either REG 41758 - PCS Fault Status or REG 41760 - Factory Fault Status for which to read the fault time stamps as follows: = REG 41758 - PCS Fault Status Bit 0 42124 ···...
Page 149: Oztek Extension Model 64308 Registers - Grid Forming Configuration & Control
SunSpec Device Information Models 11.3.23 Oztek Extension Model 64308 Registers – Grid Forming Configuration & Control Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 42211 Model Identifier 64308 42212 Model Length - # of 16-bit registers to follow...
Page 150 SunSpec Device Information Models Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) 42234 0.01 Hz 42261 6200 5000 9000 Grid Form Maximum Operating Frequency 42235 0.01 Hz 42261 5800 3000 6000 Grid Form Minimum Operating Frequency 42236 Grid Form Droop V/Q Proportional Gain Scale 42237...
Page 151: Sunspec Model 0Xffff Registers - End Model
SunSpec Device Information Models 11.3.24 SunSpec Model 0xFFFF Registers – End Model Scale Data Factory Access Number Description Units Factor Type Default Level (Reg #) Header: 42271 Model Identifier 0xFFFF 42272 Model Length - # of 16-bit registers to follow Publication UM-0076...
Page 152: 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 153: 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 31, 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 154: Figure 31 - Oztek Power Studio
Oztek Power Studio™ Tool Figure 31 - Oztek Power Studio For detailed information and operating instructions, please refer to UM-0052 Oztek Power Studio™ User’s Manual. OZPCS-RS35 Energy Storage PCS User’s Manual...
Page 155: Appendix A - Records Of Certification
Appendix A – Records of Certification 15. Appendix A – Records of Certification Certification Pending… Intertek Authorization to Mark and SunSpec Modbus for IEEE 1547 Certificate to be copied here when available from testing agency. Publication UM-0076...
Page 156: 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 157 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 158: 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 159: 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 160 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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