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Summary of Contents for EpiSensor ZDR-10
- Page 1 User Guide Wireless Demand Response Controller Applies to: ZDR-10, ZDR-15, ZDR-16 EPI-078-02 © EpiSensor...
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Page 2: Table Of Contents
Table of Contents Safety Information Electrical Installation Intended Use Related Documents Introduction Benefits Features Data Feeds & Settings Frequency Response Settings Meter Configuration, Property 6036 System State Sensors Event Response Sensors User Interface Sensors Electricity Metering Sensors Analogue & Digital Inputs Frequency Response Specification Reaction Time User Interface... - Page 3 Firmware Updates Hardware Features Power Supply Communications Wireless Communications Electricity Metering Electricity Metering Current Transformers Rogowski Coils Supported 3-phase configurations Voltage Reference Switch Output Analogue Inputs Digital Inputs Pulse Info Pulse Operation Dry Pulse Open Collector Pulse Active Pulse Mechanical Enclosure &...
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Page 4: Safety Information
Electrical equipment should be installed, operated, serviced and maintained only by qualified personnel. No responsibility is assumed by EpiSensor for any consequences arising out of the use of this material. A qualified person is one who has skills and knowledge related to the construction, installation, and operation of electrical equipment and has received safety training to recognize and avoid the hazards involved. - Page 5 ➔ If the equipment is not used in a manner specified by EpiSensor, the protection provided by the equipment may be impaired. ➔ Before performing visual inspections, tests, or maintenance on this equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, and tagged.
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Page 6: Intended Use
Failure to follow these instructions can result in death, serious injury, or equipment damage. Related Documents Related installation and configuration documents are listed in the following table: Document Reference No. EPI-066-00 EpiSensor ZDR Datasheet EPI-065-00 Install Sheet for ZDR ESE-009-08 Gateway API User Guide EPI-064-00 Bootloading on a live Gateway... -
Page 7: Introduction
The system is capable of streaming data securely to a Network Operations Centre (NOC) to arm the system, detect low frequency events, override the system remotely, and switch loads both automatically and manually. With a wide range of additional sensors available, EpiSensor’s platform can also be used for energy management, environmental monitoring and many other applications. -
Page 8: Data Feeds & Settings
Data Feeds & Settings The list of parameters that are available to monitor on the ZDR are listed below. Data reporting can be enabled or disabled as required for each of the ‘sensors’ below. Frequency Response Settings The following table lists the settings on the ZDR that related to frequency response. They define how the ZDR should respond to under-frequency events and how the current state of the hardware. -
Page 9: Meter Configuration, Property 6036
Meter Configuration, Property 6036 The active power accumulated in each watt-hour sensor depends on the configuration of the Meter. Choose the appropriate value from the table below depending on how the ZDR is connected to a 3-phase system. This is based on the ANSI C12.10 standard. -
Page 10: User Interface Sensors
remote override. Or if the event ends and the system is configured to Auto Exit Demand Response Notifies that a demand response Interval Read Only event is currently in progress. Will be and Delta reset either by the manual override push button, or remote override. - Page 11 Phase C kWh Phase C kWh value. This is a 0.01 Read/Write continually increasing kWh reading. Phase A RMS Instantaneous Phase A RMS Current. A Read Only Current Phase B RMS Instantaneous Phase B RMS Current. A Read Only Current Phase C RMS Instantaneous Phase C RMS Current.
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Page 12: Analogue & Digital Inputs
Analogue & Digital Inputs These data feeds show the number of pulses counted by the ZDR and average 4-20mA analogue input readings. Read/Writ Sensor ID Data Feed Description Unit Resolution Reporting Default 4-20 MilliAmps The Instantaneous Milli Amp value 0.001 Read Only Now 1 on channel 1 of the 4-20 Milliamp... -
Page 13: Reaction Time
Reaction Time The reaction time for frequency response programs is defined as the amount of time between an under-frequency event, and when a relay is latched / asserted. Some frequency response programs (or the certification for some programs) will require sub-second response times. -
Page 14: Mode Button
Check the power supply, and if the problem persists, contact EpiSensor support. Mode Button The following options are available with Command Mode. The button should be pressed and then released to register a valid button press. -
Page 15: Install Mode
Install Mode Issuing a press sequence on the Mode button of a powered node can enable either “Install Mode” or “Site Survey Mode” on that node. In this mode, the LED will flash at a rate that indicates the wireless signal strength (Link Quality Indicator) of that node, based on the following table: Flash Rate Flashes per Second... -
Page 16: Demand Response Logic
Amber LED Red LED Description Diagram The system is disarmed with the Key Switch and is not available for either Event Or Demand Response programs Flashing The system is disarmed, but would trigger an Event Response if Armed. The system must have a Sensor configured for Event Monitoring for this status to arise. -
Page 17: Rules Engine
ZDR installations. Gateway API EpiSensor’s Gateway has a RESTful API which can be used to send commands to the ZDR node, change settings and query data. For more detailed information on the Gateway API, and the functional available, please refer to the Gateway API User Guide (EpiSensor Document Ref. -
Page 18: Firmware Updates
For detailed instructions on updating the ZDR (and other EpiSensor nodes) over-the-air please refer to the document “How to Bootload on a Live Gateway” (EpiSensor Document Ref. ... - Page 19 Function Description Mains power supply Voltage Reference Terminals Front Panel Interface (Indicator LED’s) Current Transformer Terminals Modbus Terminals Front Panel Interface (Key Switch and Push Button) Dual Pulse Input Terminals Relay Terminals Dual 4-20mA Terminals ZigBee Wireless Module Mode Button & Status LED Page 19 ...
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Page 20: Power Supply
However, care should be taken, particularly for Demand Response applications, that the power supply is constant and won’t be interrupted during a DR event - as this would affect the operation of the ZDR. For more information on the technical specification of the ZDR power supply, please refer to EpiSensor ZDR Datasheet. -
Page 21: Communications
The power supply unit is built from the latest high efficiency switch mode technology which can operate over an ultra wide voltage range from 85 to 460VAC. It can also be operated from a DC supply. It does not use opto isolators, which was a weakness in older designs. -
Page 22: Wireless Communications
Wireless Communications All EpiSensor products use IEEE 802.15.4 ZigBee Pro for wireless communications operating at 2.4GHz. This is a secure, scalable mesh networking communications protocol designed for transmitting small amounts of data reliably, and at low power levels. There are two types of nodes in the EpiSensor wireless mesh network: powered nodes and battery nodes. -
Page 23: Electricity Metering
1A or 5A CT already in place for monitoring current. The scaling factor is input to the ZDR-10 using the “CT Ratio” property on the Node Settings page on the Gateway. All ratios are X:1. For example, when the CT Ratio is 100A ￫ 5A, then set the CT Ratio on the Node Settings page to 20:1. -
Page 24: Rogowski Coils
The Ratio that is applied to the current channels, is also applied to the Power and kWh calculators in the energy metering system. Setting the Ratio then effectively adjusts all calibration factors within the energy metering system Wiring Diagram for Current Transformer Inputs (showing terminal block for 1A / 5A CT’s) Rogowski Coils Rogowski coils (sometimes referred to as flexible CT’s) are support natively on the ZDR. -
Page 25: Supported 3-Phase Configurations
Type Inner Diameter Minimum Current Maximum Current Working Voltage 120mm 1000A CAT III-1000V or CAT IV-600V 80mm 1000A CAT III-1000V or CAT IV-600V Important Note Milliamp CT’s & Rogowski Coils supplied with the ZDR are factory calibrated and are not interchangeable –... -
Page 26: Voltage Reference
VT such as when an MV system is stepped from 11,000V to 110V with a 100 to 1 ratio. The scaling factors are input to the ZDR-10 using the “VT Ratio” property on the Node Settings page on the Gateway. All ratios are X:1. -
Page 27: Switch Output
Important Note The kilowatt hour registers on the ZDR will roll over at a value of 21,474,836 kWh. Software packages should be configured to compensate for this threshold being crossed. Switch Output This section of the document has information on the switching capability of the ZDR. The ZDR’s relays can be controlled either remotely with a command / API request, or based on demand response logic (like line frequency crossing a set point). -
Page 28: Digital Inputs
4-20mA current loop inputs The diagram below shows two 4-20mA current inputs connected to terminals on the ZDR’s main circuit board. For additional technical information on rated voltages, resolution, etc. please consult the ZDR datasheet. Wiring Diagram for 4-20mA Inputs Digital Inputs There are two digital (pulse) inputs available on the ZDR. -
Page 29: Pulse Operation
Wiring Diagram for Pulse Inputs Pulse Operation This section describes the operation of the 3 different pulse types. Dry Pulse A dry pulse can be thought of as a simple switch. Window alarm contacts or reed switches would be examples of such a connection. -
Page 30: Active Pulse
Schematic diagram of an open collector pulse output When the Integrated Circuit (IC) Output is pulsed, the signal on the “Open Collector” gets connected to the IC’s Ground. This system is polarity sensitive. The Open Collector connection must be connected to the positive (+) terminal of the IN connector and IC Ground must be connected to the negative (–) terminal of the IN connector. -
Page 31: Opening The Enclosure
Important Safety Note The enclosure of the ZDR must not be drilled, cut or modified in any way for mounting or connecting to external systems. All parts of the circuit within the enclosure must be considered to be at dangerously high mains voltage when the unit is connected to a mains voltage source. -
Page 32: Tamper Evident Seals
Important Safety Note EpiSensor equipment should be installed, operated, serviced and maintained only by qualified personnel. There are no user-serviceable parts inside the ZDR enclosure, and it should always be isolated from mains voltages before opening the enclosure lid. When closing the lid, take care to ensure that no wires or cable ties are obstructing the gasket of the enclosure. -
Page 33: Compliance Label
An example of a suitable tamper-evident seal is as follows: Image Parameter Description Manufacturer ACME Seals Limited NPX30 Body Material Polypropylene Insert Material Spring Stainless Steel Ribbon Diameter Average Breaking Strength 15kg Compliance Label There is a compliance label on the back of the ZDR enclosure that has important regulatory and node identification information. - Page 34 The label material is gloss white PVC foil with permanent adhesive and gloss overlaminate. The following table lists the certification and safety symbols that appear on the certification labels of EpiSensor products. Please refer to it for a definition of each symbol.
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Page 35: Ordering Information
EpiSensor products are not suitable or specifically designed, manufactured or licensed for use in military, aviation, powerplant, medical or in other inherently dangerous or safety critical applications. Ordering Information EpiSensor products are available to order directly or via EpiSensor’s distribution partners. The following tables describe the product code structure and list the available ZDR options. -
Page 36: Troubleshooting & Support
High Speed Data Module, 20ms data recording capability, GPS time sync, U.FL connector Troubleshooting & Support If you are experiencing problems with the ZDR or any other part of your EpiSensor system, or you notice something unusual - please contact EpiSensor support at the following email address, phone number or via live chat on our website. - Page 37 Rogowski Coil Large flexible current transducer typically used for measuring high currents Alternating Current Reporting Mode Defines how an EpiSensor node should report data to the Gateway Reporting The length of time between each data point produced by a node Interval Reporting mode where data is ‘snapped’...
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