Operator’s Guide Power Patrol Power Meter Includes: Power Patrol and HeadStart 1.
Setra Systems, Inc. | 159 Swanson Rd. | Boxborough, MA 01719 USA Phone 978.263.1400 | Fax 978.264.0292 | www.setra.
Table of Contents INTRODUCTION .......................................................................................................................... 6 The Power Patrol Power Meter ............................................................................................................... 6 Power Patrol Meter Safety Summary and Specifications ........................................................................ 6 Symbols on Equipment ................................................................
Communication and Status Messages .............................................................................................................30 HeadStart Command Buttons ..........................................................................................................................30 Communications .................................................................................................................................... 31 Setting USB Communication Parameters ..........................
SECTION V—ALL THINGS BACNET ............................................................................................... 64 Configuration Objects ......................................................................................................................................64 Pulse Output/Input Objects .............................................................................................................................66 Absolute/Net Value Measurement Objects ................................
INTRODUCTION The Power Patrol meter monitors the voltage, current, power, energy, and many other electrical parameters on single- and three-phase electrical systems. A Power Patrol meter uses direct connections to each phase of the voltage, and uses current transformers or Rogowski coils to monitor each phase of the current. Information on energy use, demand, power factor, line frequency, and more are derived from the voltage and current inputs.
WARNING Use of this device in a manner for which it is not intended may impair its means of protection. Symbols on Equipment Denotes caution. See manual for a description of the meanings. When connecting the Power Patrol to an AC load, follow these steps in sequence to prevent a shock hazard. 1. De-energize the circuit to be monitored. 2. Connect the CTs to the phases being monitored. 3. Connect the voltage leads to the different phases.
Equipment protected throughout by double insulation (IEC 536 Class II). MAINTENANCE There is no required maintenance with the Power Patrol. Abide by the following items: Cleaning: No cleaning agents, including water, should be used on the Power Patrol. Battery Life: (If equipped) The lithium battery is only used to maintain the date and clock settings during power failure and has a life expectancy of greater than 10 years. Contact Setra Systems for service.
Power Patrol Résumé de Sécurité et Spécifications Cette information de sécurité est destinée à être utilisée à la fois par l'opérateur de l'enregistreur et le personnel de service. Setra Systems, Inc n'assume aucune responsabilité pour l'utilisateur qui ne respecte pas les directives en matière de sécurité. Tous les articles sont conformes à ce qui suit: PS3037-X-X Conforme à UL Std 61010-1, 3rd Edition & IEC 61010-2-030, 1st Edition Certifié CSA Std C22.2 No.
Sortie d'impulsion: 30V max tension ouverte, 5 mA courant maxi. Voir l'appendice pour sortie d'impulsions l'utilisation. LIMITATIONS DE DÉTECTEUR UTILISEZ SEULEMENT TRANSFORMATEURS DE COURANT (TC) SHUNTÉE. N’utilisez pas d'autres TC. Utilisez seulement des TC shuntée avec une puissance maximale 333mV. Un sérieux risque de décharge électrique et des dommages à l'enregistreur peut se produire si des TC pas shuntée sont utilisés.
Power Patrol Meter Technical Specifications Specification Description Service Types Single Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire (Delta) 3 Voltage Channels 80-346 Volts AC Line-to-Neutral, 600V Line-to-Line, CAT III Current Channels 3 channels, 0.525 VAC max, 333 mV CTs, 111 mV Rogowski coils, 0-4,700+ Amps depending on current transducer Maximum Current Input 158% of current transducer rating (mv CTs) to maintain accuracy.
Specification Description Weight 366.5 g (12.92 oz, 0.808 lbs) Dimensions 24.2 x 8.5 x 4.0 cm (9.5” x 3.3” x 1.
FIELD INSTALLATION Mounting a Power Patrol Meter WARNING! Remove the meter from all sources of voltage before mounting. The Power Patrol meter must be installed in an approved electrical panel or enclosure using proper installation practices according to the local electrical codes. To mount the Power Patrol, use the two tabs provided at both ends of the case. Securely mount the Power Patrol near a dedicated circuit disconnect breaker.
Ethernet Port USB Port RS-485 Port Digital CT Inputs Voltage Connections Output Port 3 CT inputs Digital output ports. The ports can be used to output kWh, kVARh, or kVAh pulses to external devices, or to toggle on and off to control a remote device or relay. USB port for powering the meter during setup Wiring CTs 1) Insert the CT wires into the connector/s. See the following CT wire lead polarity table for the correct wiring configuration.
Connecting Communication Cable High voltage MAY BE PRESENT. Risk of electric shock. Life threatening voltages may be present. Qualified personnel only. Haute tension peut être présente. Risque de choc électrique. Tensions dangereuses peuvent être présentes. Personnel qualifié uniquement. Communication between a Power Patrol meter and a logger or computer is established with an USB cable, a serial RS-485 adapter or an Ethernet connection.
INSTALLING THE RS-485 ADAPTER TO A COMPUTER Installation of an RS-485 adapter and HeadStart software can be completed and tested with a meter prior to the field installation. 1) Insert one end of a USB cable into the RS-485 adapter and the other end into a USB port on the computer. 2) Insert the CD that came with the RS-485 adapter into your computer. 3) The Found New Hardware Wizard window appears.
CONNECTING VIA AN ETHERNET CABLE Connect one end of the Ethernet cable into the Power Patrol and the other end into your computer. To begin communicating via an Ethernet cable you must first set it with HeadStart software. See Ethernet (TCP/IP) Connection in the Communicating with a Power Patrol Meter section. Powering the Power Patrol Meter The Power Patrol meter can be powered through USB cable and computer prior to field installation for configuration purposes.
A Typical 230V Single-Phase Panel Setup (US Wire Colors) Connect the Black L1 voltage lead to Voltage L1, Red L2 voltage lead to L2 voltage, White Neutral voltage lead to neutral. CT1 would monitor L1 loads and CT2 would monitor L2 loads. Based on the above guidelines, CT3 can be used if the Blue L3 voltage lead is connected to either L1 or L2. As long as voltage lead L3 and CT3 are in-phase, the Power Patrol meter will provide correct kW readings.
POWER PATROL (SERIAL & ETHERNET COMMUNICATION) The Ethernet cable has a Link LED on its connector that glows amber when connected to the network and flashes green during Ethernet traffic. BACnet/Modbus Description Steady Green Power is applied to the meter. Flashing Green The meter is communicating.
The following table describes the Phase Verification error conditions and the appropriate correction. PHASE VERIFICATION ERROR TABLE CT1 CT2 CT3 Error Description Correction Setup is correct and the system power factor is greater than 0.55. -orAll CTs are disconnected. Connect the CTs. All CTs are incorrectly connected, Rotate the CT connections by one position by move CT 1 to CT 2, CT 2 to CT 3 and CT 3 to CT 1, until all LEDs are green. -orThe system power factor is less than 0.
EXAMPLE POWER PATROL WIRING DIAGRAM Below is an example wiring diagram for a four-wire WYE. More wiring diagrams are available in the appendix. Figure II-4: Four-wire Wye Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration.
COMMUNICATING WITH POWER PATROL METER There are a few things to determine before starting to communicate with your Power Patrol meter. Are you using BACnet or Modbus as your communication protocol? Will you use your own logger/controller to record measurements, or will you use the HeadStart software supplied with the meter to read realtime values? Is the data delivered over an RS-485 adapter or via the Ethernet? These determinations figure into how you set up the Power Patrol meter for operation.
Setting the Network Address Switches There are two rotary network address switches on a serial Power Patrol, labeled MSB (Most Significant Byte) and LSB (Least Significant Byte). These two switches are used to select the BACnet/Modbus address the client uses to communicate with the Power Patrol meter. The rotary switches are 16-position, hexadecimal switches. The default factory setting is hex 01. The address is a hexadecimal (hex) value, represented by the digits 0 through 9 and letters A through F.
Hexadecimal Address Modbus Address Availability 00 Reserved for resetting the Power Patrol to Modbus mode with 9600 baud, 8 bit, 1 stop bit and no parity. 01-F7 Available for Modbus slave devices. Reserved for network wide broadcast. The rotary switches can be used to configure the communication protocol to BACnet or Modbus as well as changing the baud rate if unsure of the current settings. FF Reserved for communication protocol settings.
RS-485 Connection 1) Select USB/RS-485(MSTP) as your communication type. 2) Select Modbus or BACnet as your communication protocol. 3) Enter a base address that matches the switches on the Power Patrol meter. 4) Select the PC COM Port from the drop-down list. 5) Click Connect. Status box will show a connected status. Default settings are used for the two remaining fields: Data Bits is 8N1 and the Baud Rate is 9600.
Ethernet (TCP/IP) Connection 1) Select Ethernet (TCP/IP) to gather information via a network connection. When selected, the Communications Setup screen changes and an IP Address is required. 2) Select your mode of communication. 3) Enter the IP Address for the Ethernet connection of the meter or select one of the previously used addresses from the drop-down list. See About IP Addresses. -orUse the Scan Network or Setup buttons to acquire a new IP Address. See About IP Addresses.
ABOUT IP ADDRESSES The Ethernet connection must have an IP Address that is set manually in the IP Address field or obtained automatically from the router connected to the logger using the Use DHCP option (dynamic address) found in the Logger Network Setup dialog box accessed via the Setup button. Both options have advantages. NOTE: A Static IP address of 10.75.75.63 is assigned in the factory to all Ethernet Power Patrol meters.
Select the correct device from the list of IP Addresses and click OK. The Setup button displays the Logger Network Setup dialog box where network address information is entered. See your network administrator before making changes. DID YOU KNOW? Setra Systems uses well-known and registered port numbers for BACnet (47808) and Modbus (502) assigned by the IANA (Internet Assigned Numbers Authority).
CONNECTING PORTS Once your communication mode is selected, click Connect to establish a connection between the computer and the Power Patrol meter. When the Power Patrol meter is in the process of connecting to the computer, the Communication Status LED flashes briefly followed by a solid green. If the Power Patrol meter cannot connect to the computer, the Communication Status LED flashes red and returns to a solid green. Change the HeadStart hardware settings and click Connect again.
Using HeadStart Software HeadStart software is used to monitor diagnostics and configure registers with Power Patrol meters. All Power Patrol meters use HeadStart software to communicate with the meter. The screen displayed for each HeadStart tab can be somewhat different based on the selected meter and the communication protocol (BACnet/Modbus). HeadStart also displays language changes, i.e., registers/objects, in dialog boxes and text fields based on the selected protocol.
Communications The Communications screen is used to configure the networking options for HeadStart (PC Interface, COM port, Modbus address, etc.) SETTING USB COMMUNICATION PARAMETERS 1) Select USB/RS-485(MSTP) to gather information via HeadStart software. 2) Enter the PC COM Port connected to the Power Patrol. -orSelect one of the previously used addresses from the drop-down list. 3) Click Connect to connect HeadStart with the Power Patrol. The Status field informs you of the connection process.
SETTING SERIAL COMMUNICATION PARAMETERS 1) Select USB/RS-485(MSTP) to gather information via HeadStart software. 2) Enter the PC COM Port connected to the Power Patrol. -orSelect one of the previously used addresses from the drop-down list. 3) Select Modbus or BACnet as your communication protocol. When Modbus is selected as the communication protocol the Communications screen displays a Modbus PC COM Port section for entering port information.
6) Click Connect to connect HeadStart with the Power Patrol. The Status field informs you of the connection process. When the connection is complete, the Device Info fields display Serial Number and Firmware Version of the Power Patrol meter. NOTE: If HeadStart was installed first, it needs to be restarted following a RS-485 driver installation. If a RS-485 port does not appear in the drop-down list, the RS-485 was not installed correctly.
DID YOU KNOW? Setra Systems uses well-known and registered port numbers for BACnet (47808) and Modbus (502) assigned by the IANA (Internet Assigned Numbers Authority). 6) Select the Use DHCP checkbox. The Dynamic Host Configuration Protocol is then used to populate the IP Address, Subnet Mask, and Gateway Address fields. 7) Select Modbus from the Mode drop-down list. 8) Click Update Logger. HeadStart displays the following message when the connection is successful.
COMMUNICATION ERROR If HeadStart is unable to communicate with the Power Patrol meter, the Status box displays the following message: “Unable to establish connection with meter, please check settings and try again” Try the following to resolve the communication error on a serial Power Patrol: No RS-485 option available in the PC COM Port drop-down list—indicates the Power Patrol is not properly connected or the required software driver is not installed.
Meter Setup The Meter Setup screen allows unique changes to an element on the Power Patrol. Within the element, CT Phase, Type, Amps, and Phase Shift are entered, based on wiring connection, for CT1, CT2, and CT3. The type of wiring connection and the Digital Output are also entered for the element. Overall, a Demand Window of 1–60 minutes is available for the recording of values and a Line Frequency of 50-, 60- is selectable.
ENTERING WIRING INFORMATION FOR AN ELEMENT Begin setup by entering an amount of time (1-60 minutes) into the Demand Window and selecting a Line Frequency from the drop-down list. Use the following steps: 1) Select WYE or DELTA as the wiring connection. A WYE connection automatically displays all three CTs. Any changes made to CT1 also apply to CT2 and CT3. Wye Wiring Connection A DELTA connection displays only the two available CTs. Any changes made to CT1 also apply to CT3.
3) Select a Digital Output from the drop-down list. See Pulse Output Port Function in the Appendix: Other Functions for more information. Comms. Setup The Comms. Setup screen shows current communication protocol, BACnet or Modbus, as well as RS-485 settings (Data bits, Baud Rate), BACnet Device Settings (DeviceID, Max. Master, Max.
The Real-Time Values screen shows current readings to verify the system is configured properly. The tables display the real-time values of Volts, Amps, KW, KVA, KVAR, apparent power factor (aPF), and displacement power factor (dPF) for Phase L1, Phase L2 and Phase L3. This screen also displays the current Data/Digital Scalar value used for each element, the CT Type connected to the Power Patrol, and the CT Value. Click Update to retrieve the values from the Power Patrol.
Read/Write Registers—Read/Set Objects The Read/Write Registers screen provides diagnostic and special configuration options, allowing the changing or viewing of the value of any Power Patrol register. Its use is not required for a basic setup. 1) Enter a register address. Refer to the Appendices, All Things Modbus or BACnet Objects for a list of registers and their descriptions. -orClick List to select a register from the Register Picker dialog box.
RESETTING BACNET OBJECTS/MODBUS REGISTERS Many of the Power Patrol registers are real-time values such as instantaneous watts or power factor. However, some objects are accumulated values such as kWh, kVARh, kVAh and various Peak Demand (kW) values. To reset all BACnet accumulated objects at once: Write to object identifier 10140 “Clear Accumulated Values” current value 1234.0.
Firmware The Firmware screen verifies the current firmware version and updates the Power Patrol internal firmware. Updating firmware is only supported in Modbus mode and via USB connection. See the appendix Firmware. 2) Click Show Version to see which version of firmware is currently loaded in meter. If a later version of firmware is available, download it from the www.setra.com/powerpatrol 3) Click Browse to access the Select a Firmware Update File dialog box and select the .
ALL THINGS MODBUS MODBUS DATA SCALING—INTERPRETING THE POWER PATROL REGISTERS The use of Modbus protocols limits the data registers to a maximum of two bytes (16 bits) or a maximum decimal value of 65535. Modbus requires that the data be unsigned (positive) integer values. To overcome these limitations some measured (and stored) values must be scaled to fit into the Modbus registers. The raw value read from the Modbus registers is multiplied by a scalar to convert the raw data.
SELECTING A SCALAR The following table is an example when selecting a data scalar for 3-phase loads based on the CT size or maximum current. These are the minimum recommended scalar settings. 3-phase Loads CT Size or Max.
VALUES REQUIRING TWO REGISTERS Additionally, some values (e.g., kilowatt hours) may cover a dynamic range that is larger than 65535 and require two Modbus registers. Any parameter in the Modbus Register Assignment tables that shows two registers (identified by the terms MSW (Most Significant Word) and LSW (Least Significant Word)) are examples of this wide-ranging parameter. To interpret the values contained in these registers, the steps are: 1) Multiply the MSW register by 65536.
Modbus Offset Register Description 44604 4603 Volts Multiplier Multiply volts values by this scalar. Use with Stepdown Transformer. Affects all parameters that use volts (i.e., kW) 44605 4604 Amps Multiplier Multiply amps value by this scalar. For use with x:5A CTs and single let monitoring of a three phase load. Affects all parameters that use amps (i.
Modbus Offset Register Description 44011 = System kVAh pulses 45111 5110 Port 1 pulse output relay type 0 = normally open (HIGH) 1 = normally closed (LOW) ABSOLUTE/NET VALUE MEASUREMENT REGISTERS Offset refers to a base of 40001. Modbus Offset Description * System=sum of three phases Register 44001 4000 kWh System LSW System Total True Energy LSW (kWh) 44002 4001 kWh System MSW System Total True Energy MSW (kWh) 44003 4002 kW System System Total True Power (kW).
Modbus Offset Description * System=sum of three phases Register 100x actual value. 44015 4014 Apparent PF System System Apparent Power Factor (PF). Register is 100x actual value. 44016 4015 Amps System Avg Average of all phases. 44017 4016 Volts Line to Line Avg Voltage Line to line (Volts) Average. 44018 4017 Volts Line to Neutral Avg Voltage Line to neutral (volts) Average.
Modbus Offset Description * System=sum of three phases Register 44036 4035 kVARh L3 LSW “ 44037 4036 kVARh L3 MSW “ 44038 4037 kVAR L1 44039 4038 kVAR L2 “ 44040 4039 kVAR L3 “ 44041 4040 kVAh L1 LSW Individual Phase Apparent Energy LSW (kVAh) 44042 4041 kVAh L1 MSW Individual Phase Apparent Energy MSW (kVAh) 44043 4042 kVAh L2 LSW “ 44044 4043 kVAh L2 MSW “ 44045 4044 kVAh L3 LSW “ 44046 4045 kVAh L3 MSW “ 44047 4046 kVA L1 44048 4047 kVA L2 “ 44049 40
Modbus Offset Description * System=sum of three phases Register 44059 4058 Volts L1 to Neutral 44060 4059 Volts L2 to Neutral “ 44061 4060 Volts L3 to Neutral “ 44062 4061 Time Since Reset LSW Seconds since KWH register was reset. LSW 44063 4062 Time Since Reset MSW Seconds since KWH register was reset. MSW 44064 4063 Data Tick Counter Internal sample count (gets cleared every minute): may be used to determine if sample read is a newer sample than last read.
POSITIVE POWER/ENERGY MEASUREMENT REGISTERS Modbus Offset Description * System=sum of three phases Register 46001 6000 Positive kWh System LSW System Positive True Energy LSW (kWh, resettable) 46002 6001 Positive kWh System MSW System Positive True Energy MSW (kWh, resettable) 46003 6002 Positive kW System System Positive Instantaneous Positive True Power (kW) (net sum of all individual kWs, if sum is negative value=0) 46004 6003 kW Demand System Max System Maximum Demand (peak demand).
Modbus Offset Description * System=sum of three phases Register 46015 6014 Positive Apparent PF System System Positive Apparent Power Factor (aPF); Register is 100x actual value (If the System aPF (44015) is positive, this register will contain that value else it will be zero) 46016 6015 Amps System Avg Average of the current in all phases. 46017 6016 Volts Line to Line Avg Average of the system line to line voltages.
Modbus Offset Description * System=sum of three phases Register 46029 6028 Positive kW L1 Individual Phase Instantaneous Positive True Powers (kW) 46030 6029 Positive kW L2 “ 46031 6030 Positive kW L3 “ 46032 6031 Positive kVARh L1 LSW Individual Phase Positive Reactive Energy LSW (kVARh, resettable) 46033 6032 Positive kVARh L1 MSW Individual Phase Positive Reactive Energy MSW (kVARh, resettable) 46034 6033 Positive kVARh L2 LSW “ 46035 6034 Positive kVARh L2 MSW “ 46036 60
Modbus Offset Description * System=sum of three phases Register 46049 6048 kVA L3 “ 46050 6049 Positive Displacement PF L1 46051 6050 Positive Displacement PF L2 “ 46052 6051 Positive Displacement PF L3 “ 46053 6052 Positive Apparent PF L1 46054 6053 Positive Apparent PF L2 “ 46055 6054 Positive Apparent PF L3 “ 46056 6055 Amps L1 46057 6056 Amps L2 “ 46058 6057 Amps L3 “ 46059 6058 Volts L1 to Neutral 46060 6059 Volts L2 to Neutral “ 46061 6060 Volts L3 to
Modbus Offset Description * System=sum of three phases Register 46082 6081 kVA Demand System Maximum Maximum Instantaneous kVA Demand (kW, resettable). 46083 6082 kVA Demand System Now System Average kVA Demand for the most recent (current) Demand Window (resettable). 46084 6083 kVAR Demand System Max System Maximum kVAR Demand (kVAR, resettable). It displays the default value after a CAM until 1 demand window elapses.
Modbus Offset Detailed Description * System=sum of three phases Register 47011 7010 kVAh System LSW System Apparent Energy LSW (kVAh, resettable) 47012 7011 kVAh System MSW System Apparent Energy MSW (kVAh, resettable) 47013 7012 kVA System System Instantaneous Apparent Power (kVA) 47014 7013 Negative Displacement PF System System Negative Displacement Power Factor (dPF); Register is 100x actual value (If the System dPF (44014) is Negative, this register will contain that value else it wi
Modbus Offset Detailed Description * System=sum of three phases Register 47023 7022 Negative kWh L1 LSW Individual Phase Negative True Energy LSW (kWh, resettable) 47024 7023 Negative kWh L1 MSW Individual Phase Negative True Energy MSW (kWh, resettable) 47025 7024 Negative kWh L2 LSW “ 47026 7025 Negative kWh L2 MSW “ 47027 7026 Negative kWh L3 LSW “ 47028 7027 Negative kWh L3 MSW “ 47029 7028 Negative kW L1 47030 7029 Negative kW L2 “ 47031 7030 Negative kW L3 “ 4703
Modbus Offset Detailed Description * System=sum of three phases Register 47042 7041 kVAh L1 MSW Individual Phase Apparent Energy MSW (kVAh, resettable) 47043 7042 kVAh L2 LSW “ 47044 7043 kVAh L2 MSW “ 47045 7044 kVAh L3 LSW “ 47046 7045 kVAh L3 MSW “ 47047 7046 kVA L1 47048 7047 kVA L2 “ 47049 7048 kVA L3 “ 47050 7049 Negative Displacement PF L1 47051 7050 Negative Displacement PF L2 “ 47052 7051 Negative Displacement PF L3 “ 47053 7052 Negative Apparent PF L
Modbus Offset Detailed Description * System=sum of three phases Register 47061 7060 Volts L3 to Neutral “ 47062 7061 Time Since Reset LSW (Seconds) Seconds since kWh, kVAh, kVARh and associated Demand registers were reset. LSW (resettable) 47063 7062 Time Since Reset MSW (Seconds) Seconds since CAM.
PROTOCOL COMMANDS The Modbus messaging protocol used for communication follows the Modbus RTU protocol described in this section. Each register read from or written to the Power Patrol is a 16-bit unsigned, positive integer value. The Power Patrol supports the following commands. Command Number (Hex) Command Name Description Read Holding Registers 03 Used to read the data values from the Power Patrol. Write Single Register 06 Used to write a single holding register to a Power Patrol.
Example Command This command reads from a Power Patrol with an address switch setting of 37 hex (55 in decimal), reading one byte starting at register offset 0C hex (12 in decimal). Note that offset 12 corresponds to Modbus register 40013. All values are hexadecimal.
Write Single Register This command writes to a single holding register of the Power Patrol. The normal response is an echo of the request, returned after the register contents are written.
Error Response If the first register in this write command is not in the valid range of registers, the Power Patrol returns an error message. Report Slave ID This command is used to read the description, the current status and other information specific to a remote device. A normal response includes the data contents specific to the device.
ALL THINGS BACNET CONFIGURATION OBJECTS Object Identifier Name Description 10020 Data Acquisition Tick Internal sample count (gets cleared every minute): may be used to determine if sample read is a newer sample than last read. 10140 Clear Accumulated Measurements Writing 1234 to the present value will reset all the accumulator objects (kWh, kVAh, kVARh) 10190 Communications protocol Used to change between BACnet and Modbus communications protocols.
Object Identifier Name Description 12131 CT1 Type 1=MilliVolt, 2=Rogowski 12132 CT2 Type 1=MilliVolt, 2=Rogowski 12133 CT3 Type 1=MilliVolt, 2=Rogowski PULSE OUTPUT/INPUT OBJECTS Object Identifier 13020 Name Port 1 output control when used as an on/off—open/closed switch Description 0 = output LOW (closed) 1 = output HIGH (open) [default] Object 13100 present value must = 0 to use 0 = No pulses, Port may be used as an on/off— 13100 Digital Port 1 Configuration Turns pulses on/off open/close
Object Identifier 1030 Description * System=sum of three phases Name kW System System True Power (kW).
Object Identifier Description * System=sum of three phases Name 5000 kVAR System System Total Reactive Power (kVAR). Unsigned absolute (ABS) value of ABS (kVAR L1) + ABS (kVAR L2) + ABS (kVAR L3) 5001 kVAR System Net System Total Reactive Power (kVAR). Signed net value of (kVAR L1) + (kVAR L2) + (kVAR L3) 5030 kVAR L1 Individual Phase Reactive Energy LSW (kVARh) (Signed) 5060 kVAR L2 “ 5090 kVAR L3 “ 5120 kVAR Demand System Max System Maximum Instantaneous kVAR Demand (kVA, resettable).
Object Identifier Description * System=sum of three phases Name 8050 kVA Demand System Now Average kVA for most recent demand window (resettable). Displays the default value after a CAM or reset, or power cycle. Updates every min thereafter. True demand value takes a demand period to get to actual value.
Object Identifier Description Name * System=sum of three phases 6020 kVARh System Total Positive System True Energy (kVARh) Positive (Signed Net) 6050 kVARh L1 Positive Individual Phase Reactive Energy (kVAR) (Signed) 6080 kVARh L2 Positive “ 6110 kVARh L3 Positive “ 7001 kVAh System Total Positive System Total Positive Apparent Energy (kVAh) (Signed Net) Accumulates only when kW is positive 7020 kVAh L1 Positive Individual Phase Apparent Energy (kVAh) (Signed) 7050 kVAh L2 Positive
APPENDICES Appendix A—Power Patrol Meter Wiring Diagrams Typically, the Power Patrol can be wired using any one of the following common wiring setups. These diagrams will assist you in properly connecting your Power Patrol meter for the setup desired. ALL WIRE COLORS ARE U.S. STANDARD. WARNING! DO NOT EXCEED 600VAC PHASE TO PHASE CAT III. When complete, close the enclosure cover, if equipped. Attention: Ne pas dépasser une phase à 600VAC CAT III. Une fois terminé, fermer le covercle, s’il y en a un.
POWER PATROL PLUS WIRING DIAGRAMS Figure A-1: Three-wire Delta Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration.
Figure A-2: Two-wire Single Phase Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration. Figure A-3: Three-wire Single Phase Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration.
Figure A-4: 3-Phase, 4-Wire Delta Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration.
Appendix B—Connecting to a Network This section describes setting up a network with multiple Power Patrol instruments using the BACnet or Modbus communication protocol. A network can support up to 127 Power Patrol instruments using the BACnet protocol and 247 Power Patrol instruments using the Modbus protocol. COMMUNICATION PROTOCOL BACnet MS/TP and Modbus RTU are standard communication protocols that allow for communication between a client and multiple devices connected to the same network.
Appendix C—Digital I/O Functions DIGITAL PULSE OUTPUTS There is one configurable digital pulse output port on the SPP. The ports can be used to output kWh, kVARh, or kVAh pulses to external devices, or to toggle on and off to control a remote device or relay. Pulse Output Port Function Pulse output is used to generate pulses for external devices such as data loggers that can accept pulses but do not have BACnet or Modbus capability.
Modbus Output Port Registers Refer to the following two tables to configure the Power Patrol output ports when using the Modbus protocol.
Appendix D—VERIS H8035/H8036 Emulation The Power Patrol meter can be used as a direct replacement for the Veris, Inc. H8035/H8036 series of networked power meters. This mirroring of the Veris Modbus register assignments makes replacement with a Power Patrol meter simple.
VERIS MODBUS INTEGER REGISTERS Modbus Register Offset HeadStart Name Description 40001 0 kWh System LSW System True Energy (kWh, Resettable) 40002 1 kWh System MSW System True Energy (kWh, Resettable) 40003 2 kW System System True Power (kW) 40004 3 kVAR System System Reactive Power (kVAR) 40005 4 kVA System System Apparent Power (kVA) 40006 5 Apparent PF System System Apparent Power Factor (PF) 40007 6 Volts Line to Line Avg Average Line to Line Voltage 40008 7 Volts Line
Modbus Register Offset HeadStart Name Description 40023 22 Amps L2 " 40024 23 Amps L3 " 40025 24 kW System Avg Equals KWH_SYSTEM_L&M ÷ (TimeSinceReset_L&M seconds /3600 seconds/Hr) (resettable) 40026 25 kW Demand System Min System Minimum Demand (kW, resettable), It displays the default value after a CAM until 1 demand window elapses. After a power cycle or CPU reset the value is not reset but it does not update again until 1 demand window elapses.
Address Units ≤ 100A 101 – 400A 401 – 800A 801 – 1600A 1601 – 32,000A 40014 aPF L2 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 40015 aPF L3 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 40016 VOLTS L1-L2 0.03125 0.03125 0.03125 0.03125 0.03125 40017 VOLTS L2-L3 0.03125 0.03125 0.03125 0.03125 0.03125 40018 VOLTS L3-L1 0.03125 0.03125 0.03125 0.03125 0.03125 40019 VOLTS L1-N 0.015625 0.015625 0.015625 0.015625 0.
VERIS MODBUS FLOATING POINT REGISTERS Modbus Register Offset Viewpoint Name Description 40257 256 VERIS Float kWh System MSW System Net True Energy (kWh, Resettable) 40258 257 VERIS Float kWh System LSW System Net True Energy (kWh, Resettable) 40261 260 VERIS Float kW System MSW System Total True Power MSW 40262 261 VERIS Float kW System LSW System Total True Power LSW 40263 262 VERIS Float kVAR System MSW System Total Reactive Power MSW 40264 263 VERIS Float kVAR System LSW Syste
Modbus Register Offset Viewpoint Name Description 40280 279 VERIS Float kW L3 LSW Individual Phase True Power L3 LSW 40281 280 VERIS Float Apparent PF L1 MSW Individual Phase Apparent Power Factor L1 MSW 40282 281 VERIS Float Apparent PF L1 LSW Individual Phase Apparent Power Factor L1 LSW 40283 282 VERIS Float Apparent PF L2 MSW Individual Phase Apparent Power Factor L2 MSW 40284 283 VERIS Float Apparent PF L2 LSW Individual Phase Apparent Power Factor L2 LSW 40285 284 VERIS Float
Modbus Register Offset Viewpoint Name Description 40303 302 VERIS Float Amps L3 MSW Phase Current L3 MSW 40304 303 VERIS Float Amps L3 LSW Phase Current L3 LSW 40305 304 VERIS Float kW System Avg MSW System Average Power MSW 40306 305 VERIS Float kW System Avg LSW System Average Power LSW 40307 306 VERIS Float Demand System Minimum MSW System Minimum Demand MSW 40308 307 VERIS Float Demand System Minimum LSW System Minimum Demand LSW 40309 308 VERIS Float Demand System Maximum
Appendix E—Conversion Table DECIMAL TO HEXADECIMAL CONVERSION TABLE Decimal values are used for the Power Patrol 24 addresses. The table below shows the corresponding hex values.
Decimal Hex Decimal Hex Decimal Hex Decimal Hex Decimal Hex Decimal Hex 30 1E 73 49 116 74 159 9F 202 CA 245 F5 31 1F 74 4A 117 75 160 A0 203 CB 246 F6 32 20 75 4B 118 76 161 A1 204 CC 247 F7 33 21 76 4C 119 77 162 A2 205 CD 248 F8 34 22 77 4D 120 78 163 A3 206 CE 249 F9 35 23 78 4E 121 79 164 A4 207 CF 250 FA 36 24 79 4F 122 7A 165 A5 208 D0 251 FB 37 25 80 50 123 7B 166 A6 209 D1 252 FC 38 26 81
Appendix F—Troubleshooting TROUBLESHOOTING COMMUNICATION ISSUES When the baud rate on the HeadStart Communications screen and the Power Patrol do not match, communication fails, the Status box displays the following message: “Unable to establish connection with meter, please check settings and try again” The following headings provide possible solutions for communication errors.
FREQUENTLY ASKED QUESTIONS What is the maximum distance for BACnet MS/TP or Modbus (RS-485) communication? BACnet MS/TP or Modbus (RS-485) can reach a distance up to 1200 meters (4000’) with data rates at 100 kbps. One (or more) of the Phase Verification LEDs is red. What does this mean? Any number of red lights indicates the Power Patrol meter is wired incorrectly. Review the table in Phase Verification in Section III of this manual for a description of the indicator lights.
How can I switch the Power Patrol from BACnet to Modbus mode? Using a PC running HeadStart, go to Comms. Setup tab and select desired communication protocol. How can I switch the Power Patrol from Modbus to BACnet mode? Using a PC running HeadStart, go to Comms. Setup tab and select desired communication protocol. How can I fix BACnet network timing errors/slowness? The maximum number of the MSTP master should be set to the highest MAC address present in the network.
GLOSSARY Amp Multiplier A multiplier that changes amperage so that a meter can read higher measurements. Analog Value A type of BACnet object that is a floating point number. On the Power Patrol, Analog Value objects are used to represent the electrical measurements. Building Automation Control networks. A communications protocol that allows building automation and control devices and their associated properties (objects) to be automatically discovered.
of all individual signed measurements. Object Power Factor Pulse Input Pulse Output Rising edge RMS RS-485 RTU SCADA Service Volts Multiplier A BACnet object is a standard data structure that on the Power Patrol represents electrical measurements. The power factor of the AC electric power system is defined as the ratio of the real power flowing to the load to the apparent power, and is a number between 0 and 1 (frequently expressed as a percentage, e.g., 0.5 pf = 50% pf).
