Telemetry System PRODUCT SPECIFICATION

Transcription

1 Telemetry System PRODUCT SPECIFICATION NSE / NSE TS Telemetry NSE / NSE DH Telemetry (55mm) NSE HT DH Telemetry (38mm) Revision C September 2017

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3 Table of Contents 1 PREFACE PRODUCT CODE ABBREVIATIONS PRODUCT OVERVIEW REFERENCE DOCUMENTS TELEMETRY FAMILY OVERVIEW GENERAL DESCRIPTION FEATURES SYSTEM SPECIFICATION TRANSMISSION PARAMETERS kbit/s Link Configuration kbit/s Link Configuration NSE TOPSIDE TELEMETRY (FORMERLY NSE ) Safety Conformance Electromagnetic Compatibility NSE HT DH TELEMETRY 55MM (FORMERLY NSE ) NSE HT DH TELEMETRY 38MM COMMUNICATION RANGE ADDRESSING CONCEPT DESCRIPTION ADDRESSING FUNCTIONAL DESCRIPTION BLOCK DIAGRAM HARDWARE FEATURES Transmitter Receiver Power Filter DSP Microcontroller FIRMWARE FEATURES Bootloader AGC Loop Adaptive Filter CRC and Retransmission COMMUNICATION INTERFACE Data Port Status Port & Telemetry Manager Software TOPSIDE MODEM INTERFACE REAR PANEL CONNECTIONS USB 1 / USB 2 Connections RS-485/422 Interface IEC Power Inlet Powerline Input (from HV PSU) Powerline Output (to wire-/powerline) FRONT PANEL LED Version DOWNHOLE MODEM INTERFACE POWER CONNECTIONS - NSE & NSE MM POWER CONNECTIONS - NSE MM DOWNHOLE MODEM SIGNAL CONNECTIONS Page 2

4 9 MECHANICAL DIMENSIONS NSE (NSE ) - TS TELEMETRY MS NSE (NSE ) HT DH TELEMETRY 55MM NSE HT DH TELEMETRY 38MM REVISION HISTORY ABBREVIATIONS Page 3

5 1 Preface 1.1 Product Code Abbreviations NSE North Sea Electronics TS Topside MS Medium Speed HT High Temperature DH Downhole mm millimeter Refer to section 11 Abbreviations for the complete list. 1.2 Product Overview This manual supports the following product revisions: Product number Rev. Product Name Comment NSE _-_-_-_ TS Telemetry Formerly named NSE NSE _-_-_-_ DH Telemetry Fits inside housing of ID 55mm Formerly named NSE NSE A1 TS Telemetry Renamed to NSE _-_-_-_ NSE A1 HT DH Telemetry 55mm Renamed to NSE _-_-_-_ NSE _-_-_-_ HT DH Telemetry 38mm Fits inside housing of ID 38mm Note 1 The _-_-_-_ field indicates options for the specific product. This can be speed (kbit/s), custom housing etc. Note 2 The maximum throughput of the telemetries has increased significantly since the first version of the systems were available. Please note that maximum throughput (kbit/s) may depend on both hardware and firmware revision. Older hardware may not support most recent firmware releases. 1.3 Reference Documents Document Number Document Name Description NSE Telemetry User Manual User manual for the modem. Includes setup and installation NSE Modem Status Protocol description Description of all status protocol registers NSE Modem Addressing Description NSE Firmware Loader User Manual Page 4

6 1.4 Telemetry Family Overview The Topside modem can communicate with both the 55mm and the 38mm versions of the downhole modem. Note that the 38mm version of the downhole modem has a lower current rating than the 55mm version in default mode. Consult NSE for options here. Page 5

7 2 General Description The Wireline Telemetry System is used for communication via wireline or powerline. The system consists of two main components: topside unit and one or more downhole modems. The telemetry system operates as a transparent link between the topside user interface/applications and the electronics located in the downhole tool. Serial commands sent from a computer to the topside modem are converted/modulated and superimposed on the power cable. This signal is demodulated and converted back to conventional serial commands (TTL) in the downhole modem. The modems are designed to communicate over wire- or powerlines. A communication signal is modulated on the power bus. Communications over the powerline is simplex, but as the modems internally handle buffering of data, hand shaking and flow control, the interface to the user is duplex. 3 Features Features Analog front end with Automatic Gain Control (AGC) function Downhole modem low power consumption Small form factor Cable and load adaptive filter Open protocol solution Addressing Benefits Superior dynamic range and sensitivity assuring optimum output performance and robustness. Reducing overall system power consumption and reduce heat generation in tightly packed assemblies The smallest version of the downhole modem, will fit in a 38mm (1.5 ) diameter, allowing for mounting in most available downhole and subsea tools. The telemetry s operating environment are rarely the same in different downhole and subsea applications. The telemetry system will automatically adapt to the transmission media (cable) and load during startup and continuously during operation, ensuring the highest possible link quality at all times. The telemetry system adds no encryption or headers to the data transmission. What you send in one side is simply what you get out on the other side. Status and configuration protocol is open and available for customers, to allow for easy integration. Multiple downhole modems can be added on a toolstring. Simple setup and management of addresses. Page 6

8 4 System Specification 4.1 Transmission Parameters kbit/s Link Configuration Parameter Conditions / Comments Transmission Parameters Uplink Transmission rate* Downlink Transmission rate** Redundancy Check Automatic retransmission Downlink Carrier Frequency Uplink Carrier Frequency Downhole -> Topside Topside -> Downhole If corrupt data is received Fixed Configurable, 9 steps 29.6 Min Typ Max Unit * The uplink transmission rate depends on the uplink carrier frequency and cable media attenuation. ** The bandwidth is shared between the uplink and the downlink, and the transmission rates given here is the maximum that can be achieved in one direction. If there is continuous transmission both ways, the maximum transmission rates will be reduced. 8 bit Yes kbps kbps khz khz kbit/s Link Configuration Parameter Conditions / Comments Transmission Parameters Uplink Transmission rate* Downlink Transmission rate** Redundancy Check Automatic retransmission Downlink Carrier Frequency Uplink Carrier Frequency Downhole -> Topside Topside -> Downhole If corrupt data is received Fixed Configurable, 9 steps 29.6 Min Typ Max Unit * The uplink transmission rate depends on the uplink carrier frequency and cable media attenuation. ** The bandwidth is shared between the uplink and the downlink, and the transmission rates given here is the maximum that can be achieved in one direction. If there is continuous transmission both ways, the maximum transmission rates will be reduced. 8 bit Yes kbps kbps khz khz Page 7

9 4.2 NSE Topside Telemetry (Formerly NSE ) Parameter Conditions / Comments Power Filter Voltage Range Operational Survival Min Typ Max Unit VDC VDC Power Filter Current Range Operational 0 8 A Supply voltage Input Voltage Fuse current Slow fuse VAC A USB Data Port User selectable Baud rate RS485 Data Port User selectable Baud rate USB Status Port Fixed Baud rate Virtual COM port Virtual COM port bps bps bps Transmitter Data Buffer 512 bytes Operating Temperature Range C On board sensor: Communication interface: Onboard temperature sensor USB Port 1, FTDI Virtual Serial Port Communication USB Port 2, FTDI Virtual Serial Port Status RS422/485 Alternative Communication port Safety Conformance PN-EN :2004 Information technology equipment Safety Part 1: General requirements Electromagnetic Compatibility PN-EN :2008 PN-EN :2008 / A1:2012 Page 8

10 4.3 NSE HT DH Telemetry 55mm (Formerly NSE ) Parameter Conditions / Comments Wireline High Voltage Operational Survival Single voltage transient max 3 seconds Min Typ Max Unit Wireline Current Operational 0 8 A VDC VDC Wireline Filter Series Inductance Series Resistance µh mω Supply voltage Input Voltage VDC Current 24V Transmit Receive ma ma Serial Port 1 Baud rate Output Low Voltage Output High Voltage Data port Configurable I OL 1.8 ma I OH 1.8 ma bps V V Serial Port 2 Baud rate Output Low Voltage Output High Voltage Data port Mode Configurable I OL 1.8 ma I OH 1.8 ma bps V V Serial Port 2 Baud rate Output Low Voltage Output High Voltage Status port Mode Fixed I OL 1.8 ma I OH 1.8 ma bps V V Transmitter Data Buffer 512 bytes Operating Temperature Range C On board sensor: Communication interface: Onboard temperature sensor Supply current measurement Supply voltage measurement Serial port #1 - Data - 3.5V TTL level Serial port #2 Status/ Data - 3.5V TTL level Page 9

11 4.4 NSE HT DH Telemetry 38mm Parameter Conditions / Comments Wireline High Voltage Operational Survival Single voltage transient max 3 seconds Min Typ Max Unit Wireline Current Operational 0 4 A VDC VDC Wireline Filter Series Inductance Series Resistance µh mω Supply voltage Input Voltage VDC Current 24V Transmit Receive ma ma Serial Port 1 Baud rate Output Low Voltage Output High Voltage Data port Configurable I OL 1.8 ma I OH 1.8 ma bps V V Serial Port 2 Baud rate Output Low Voltage Output High Voltage Data port Mode Configurable I OL 1.8 ma I OH 1.8 ma bps V V Serial Port 2 Baud rate Output Low Voltage Output High Voltage Status port Mode Fixed I OL 1.8 ma I OH 1.8 ma bps V V Transmitter Data Buffer 512 bytes Operating Temperature Range C On board sensor: Communication interface: Onboard temperature sensor Supply current measurement Supply voltage measurement Serial port #1 - Data - 3.5V TTL level Serial port #2 Status/ Data - 3.5V TTL level Page 10

12 4.5 Communication Range The Wireline Telemetry System has been tested on a variety of wireline cables. The adaptive equalizer in the system allows the system to adapt to most cables as long as the attenuation in the cable is within the range of the receiver amplifier. One of the most common types of wireline cables is 5/16 mono-conductor. The system has been tested on both standard and stainless steel (corrosion resistant) 5/16 cables. The following data can serve as a baseline for maximum cable length: Cable Type Conditions / Comments Min Typ Max Unit 1N32PTZ 5/16 monoconductor Meters 1N32WTZ-S77 5/16 monoconductor corrosion-resistant Meters Page 11

13 5 Addressing 5.1 Concept Description Several (up to eight) downhole modems can communicate, one at a time, on the same toolstring/ wireline. Each downhole modem must have been assigned a unique address for their data port(s) in this setup. Which modem to address downhole is controlled by an address configuration command sent to the status port topside. See figure below. Refer to the document NSE Modem addressing description for further information. 5.2 Addressing Parameter Conditions / Comments Addressing Parameters Number of unique addresses Number of modems on toolstring Downhole modems* Min Typ Max Unit * Note that each modem added will reduce the signal level to and from the topside modem. Integration tests must always be done in situations with several modems in order to ensure that the complete system works as intended. Page 12

14 6 Functional Description 6.1 Block Diagram Figure 1 Block Diagram Both the topside and downhole modem have the same main topology. Each modem includes power filter, receiver amplifiers and filter, transmitter amplifier and microcontroller. Page 13

15 6.2 Hardware Features Transmitter The transmitter consists of a transmitter amplifier (DAC and power amplifier) and line (high) voltage interface circuits. In addition there are circuits to disconnect the transmitter when receiving, and voltage protection circuits Receiver The receiver parts are; a pick-up amplifier, a signal filter that extracts the communication frequencies and a receiver amplifier that amplifies the signal to an optimized ADC level Power Filter The power filter is designed to have impedance optimized for the communication frequencies used by the modem. This filter extracts the communication frequencies from the power line and will also attenuate noise from power supply and load DSP Microcontroller The DSP Microcontroller tasks are: - Modulation - Demodulation - Digital adaptive filter - Receive pattern recognition and synchronization - Noise filtering - AGC Control Loop - CRC Generation and Check - Data buffering and retransmission if negative acknowledge is detected - Handshake - Bootloader for firmware updates Page 14

16 6.3 Firmware features Bootloader All telemetry versions (topside and downhole) come with bootloader functionality. This allows the customer to update firmware without returning the unit(s) to NSE. It does however require a bootloader kit AGC Loop The modem features an AGC (Automatic Gain Control) loop that adjusts the modem receiver gain to an optimum level Adaptive Filter The modem features an adaptive filter that will tune the modem to the characteristics of the transmission media (cable). This function will ensure continuous adjustments to achieve the optimum signal to noise ratio, and allow the telemetry to be used on a wide variety of cable characteristics. The adaptive filter will also respond to load changes and external noise CRC and Retransmission The modem features Cyclic Redundancy Check in order to verify a received data packet. If the CRC check fails, the modem will send a Negative Acknowledge in order to have the data retransmitted. The transmitter will wait for an Acknowledge prior to sending new data. If no acknowledge or a negative acknowledge is received, data is automatically retransmitted. 6.4 Communication Interface Data Port The modem is designed to be a transparent link. This means that there are no special commands that can be sent or received to/from the modem data ports in order to make it change its behavior or read out status. All data sent to the serial port will be transmitted to the receiver modem. If control commands or status information is required, this can be acquired from serial status port. The modems will pass a token in order to determine who is the talker or listener on the wireline. This process is completely automated and the interface equipment does not need to poll or pay attention to when it transmits data to the modem. However, one should be aware that there will be a time delay between transmission and reception, which will vary depending on the traffic load Status Port & Telemetry Manager Software A status protocol is available if the customer wants to read out specific performance parameters from the telemetry system. This protocol can either be implemented in the end-user GUI, or you can download the free Telemetry Manager software which gives you a variety of information about the system. Here are also options for logging, firmware upgrading, wireline analysis, link quality and a one-button-push for remote support from NSE. The software can be downloaded from Page 15

17 7 Topside Modem Interface 7.1 Rear Panel Connections The rear panel has the following connectors: Connector # Name Function 1 USB1 / Data USB dataport. This is the port for the data traffic 2 USB2 / Status USB statusport. This is the USB port for monitoring the modem status data 3 RS485 or RS422 Alternative dataport. Can be used for data traffic (instead of the USB1). Consult NSE for this option VAC IEC inlet 5 Powerline output (to load) 6 Powerline input (from HV PSU) Power to the modem. Output voltage VDC input Page 16

18 7.1.1 USB 1 / USB 2 Connections Modem Connector USB interface chip USB Type B, Receptable FTDI FT232R USB to serial UART interface RS-485/422 Interface Modem Connector RS485/422 interface chip CONNECTOR, D-SUB, Receptacle, 9 pin Farnell no: MAX1486CUB+ Connector pinout: Pin Number Signal Interface chip overview 1 GND 2 N.C 3 N.C 4 Y 5 Z 6 N.C 7 N.C 8 A 9 B Page 17

19 7.1.3 IEC Power Inlet Modem Connector Input Voltage range Input Fuse BULGIN - PX0580/PC - INLET, IEC, PCB Farnell no: VAC 1A slow Powerline Input (from HV PSU) HARTING Connector Modem Connector Suggested mating connector Harting HAN K 4/2 PIN MALE INSERT Harting HAN K 4/0 PIN FEMALE INSERT Connector pinout and drawing: Pin Number Signal Connector drawing 1 HV + 2 HV- (GND) 3 N.C 4 N.C Page 18

20 7.1.5 Powerline Output (to wire-/powerline) HARTING Connector: Modem Connector Suggested mating connector Harting HAN K 4/0 PIN FEMALE INSERT Harting HAN K 4/2 PIN MALE INSERT Connector pinout and drawing: Pin Number Signal Connector drawing 1 HV + 2 HV - (GND) 3 N.C 4 N.C Page 19

21 7.2 Front panel LED Version The topside modem has 5 LED indicators as shown below LED function table Name Color Function POWER Green Illuminated when AC Mains is plugged into the modem LINK OK Green Illuminated when topside and downhole modem has power and contact with each other TX DATA Green Blinks when transmitting data RX DATA Green Blinks when receiving data CRC FAIL Red Blinks when detecting a CRC Fault. Page 20

22 8 Downhole Modem Interface 8.1 Power Connections - NSE & NSE mm Power Connections 9-pin Data, status and Vsupply Figure 1 NSE (NSE ) Power terminals and signal connector Connect signal leads to terminal 2, 3, 4 & 5 according to table below. Note the difference in pinout between the 38 and 55mm DH modem! TERMINAL NAME WIRE AND COLOR FUNCTION 1 Signal Tap AWG 24, Brown Internally short circuited to Power In. Can be used to bypass the modem DH filter. Consult NSE for use and wiring 2 Power in AWG 20, Red HV Power in to the DH Modem. This should come directly from the topside modem powerline output (through the wireline). The telemetry signaling is also imposed at this terminal. 3 Power out AWG 20, Orange HV Power out to the load of the system. 4-7 GND AWG 20, Black Ground connections. This should be the same ground potential as the GND pin on the DH Modem signal connector Figure 2 NSE (NSE ) Connection DH modem Page 21

23 8.1 Power Connections - NSE mm Note the difference in pinout between the 38 and 55mm DH modem! Modem Connector Harwin M M Suggested mating connector Harwin M F TERMINAL NAME FUNCTION 1 Signal Tap Internally short circuited to Power In. Can be used to bypass the modem DH filter. Consult NSE for use and wiring 2 Power out HV Power out to the load of the system 3 Power in HV Power in to the DH Modem. This should come directly from the topside modem powerline output (through the wireline). The telemetry signaling is also imposed at this terminal. 4 GND Ground connections. This should be the same ground potential as the GND pin on the DH Modem signal connector Page 22

24 8.2 Downhole Modem Signal Connections Applies for both: NSE (NSE ) HT DH Telemetry 55mm NSE HT DH Telemetry 38mm Connector Pinout and drawing Figure 3 Signal connection DH. PIN FUNCTION CONNECTOR PINOUT 1 GND 2 Serial1 Tx 3 Serial1 Rx NC GND Serial2 Tx / CANH Serial2 Rx / CANL NC Vin (DC) Page 23

25 9 Mechanical Dimensions 9.1 NSE (NSE ) - TS Telemetry MS Page 24

26 9.1 NSE (NSE ) HT DH Telemetry 55mm The 55mm DH telemetry is typically supplied as an assembly of the modem and its power filter board. The dimensions below are for this assembly. Contact NSE for housing and alternative mounting options. Page 25

27 9.2 NSE HT DH Telemetry 38mm Side- and topview Front and rear view Page 26

28 10 Revision History REV DATE DESCRIPTION PREP APPR COMPANY A Updates & New layout RFY GLK NSE B Updated catalogue names GLK AJA NSE C Updated transmission parameters SAL NSE PAGES DOCUMENT: 28 PAGES APPENDICES: 0 Page 27

29 11 Abbreviations A Ampere (Electric Current) AC Alternating Current (Voltage type) ADC Analog to Digital Converter AGC Automatic Gain Control Atm Atmosphere (normal ambient air pressure at the earth surface) bps Bits per seocnd CAN Controller Area Network - Communication type COM-port Communication port CRC Cyclic Redundancy Check D.N.C Do not connect DAC Digital to Analog Converter DAQ Data Acquisition DC Direct Current (Voltage type) Deg C Degrees Celisus DH Down-hole D-Sub Connector type often used for serial interfaces FSK Frequency Shift Keying GND Ground H Henry - Unit for Inductance HT High Temperature HV High Voltage IEC International Electrotechnical Commission IOH Current output at high level IOL Current output at low level IPC International Standard for soldering khz Unit for frequency - kilohertz = 1000 Hz = 1kHz LED Light Emitting Diode ma Milli-Ampere (1mA = 0.001A) MS Medium Speed N.C Not Connected NSE North Sea Electronics PCB Printed Circuit Board PSU Power Supply Unit PWM Pulse Width Modulation RS-485 Serial communication type - multidrop RX Receiver, receive s Second (time unit) TS Topside TTL Transistor-Transistor-Logic (Serial communication type) TX Transmitter, transmit UART Universal Asynchronous Receiver/Transmitter USB Universal Serial Bus (Serial communication type) V Voltage (Electric) Vp-p Voltage peak-to-peak Page 28