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Maxim Integrated 78M6610+LMU User Manual

Evaluation kit
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78M6610+LMU Evaluation Kit
User Manual
July 2013
Rev. 1
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit
patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
©
2013 Maxim Integrated Products, Inc.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.

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Summary of Contents for Maxim Integrated 78M6610+LMU

  • Page 1 Rev. 1 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.

  • Page 2: Table Of Contents

    Package Contents........................4 System Requirements ....................... 4 Safety and ESD Notes ....................... 5 Testing the 78M6610+LMU EV Board Prior to Shipping ............5 USB Driver Installation ........................6 2.1.1 Confirm COM Port Mapping ..................... 6 2.1.2 FTDI COM Port Trouble Shooting ..................6 Hardware Setup: Sensor Interface ....................
  • Page 3 Figure 2: 78M6610+LMU Evaluation Board Connections ..................9 Figure 2: 78M6610+LMU Evaluation Board Connections ................... 22 Figure 3: 78M6610+LMU Evaluation Board Electrical Schematic (1 of 4) ............24 Figure 4: 78M6610+LMU Evaluation Board Electrical Schematic (2 of 4) ............25 Figure 5: 78M6610+LMU Evaluation Board Electrical Schematic (3 of 4) ............

  • Page 4: Introduction

    78M6610+LMU Evaluation Kit User Manual 1 Introduction The 78M6610+LMU evaluation kit (EV kit) demonstrates the capability of the 78M6610+LMU for monitoring a single-phase or split-phase AC load using up to two voltages and two currents (sensors included). The EV kit connects to a PC through a USB cable that provides both power and data communication to the board.

  • Page 5: Safety And Esd Notes

    10 mA – 20A 46-64 Hz 1.5 Testing the 78M6610+LMU EV Board Prior to Shipping Before every kit is shipped, the board (and sensors) undergo a single-load point calibration using precise energy source equipment. The device temperature is also calibrated at the same time. Results printed out on paper and included with the EV kit.

  • Page 6: Usb Driver Installation

    FTDI USB Driver and Utilities subdirectory on the CD. The FT2232 controller and 78M6610+LMU is powered from the USB cable and is active when no AC power is applied to the sensor interface of the 78M6610+LMU EV Kit.

  • Page 7: Hardware Setup: Sensor Interface

    78M6610+LMU Evaluation Kit User Manual 3 Hardware Setup: Sensor Interface The 78M6610+LMU EV board can be provisioned in multiple configurations. This manual covers common setups for using a shunt, shunt with CT, or two CTs. The board is provisioned and calibrated for the following configuration to retrieve the gain value of the shunt (printed on a label located on the bottom of the board).

  • Page 8: Jumper And Switch Descriptions

    The following tables describe the default position of the EV board jumpers and switches for using the on-board shunt current sensor at sensor slot S1. J23 Jumper Description J23 Pins Description Jumper Connect J15 SHUNT to 78M6610+LMU Sensor Slot 1 Installed Connect J10 CT2+ to 78M6610+LMU Sensor Slot 1 J24 Jumper Description J24 Pins Description...

  • Page 9: Single/Multiphase Measurements Using Cts

    Line 2 Load Line 1 Load Figure 2: 78M6610+LMU Evaluation Board Connections 1. Connect the AC source Neutral to J15 and the load(s). 2. Connect the AC source Line 1 to J2 and to J19 (Relay1) through the Line 1 CT.

  • Page 10: Jumper Position Changes

    Move J23 and J24 jumpers to position CT to use CT2 for sensor slot S1. J23 Jumper Description J23 Pins Description Jumper Connect J15 SHUNT to 78M6610+LMU Sensor Slot 1 Connect J10 CT2+ to 78M6610+LMU Sensor Slot 1 Installed J24 Jumper Description J24 Pins...

  • Page 11: Hardware Setup: Digital Interface

    Sets device address upon reset (UART/I C modes) Both Closed J12 Jumper Description J12 Pins Description Default Connect 78M6610+LMU to USB Controller (U3) Installed Connect 78M6610+LMU to RS485 transceiver (U11) J17 Jumper Description J17 Pins Description Default Connect USB Controller to isolation IC (U7)

  • Page 12: Rs-485 Interface

    Data - P Tri-state, Bi-directional Data - N Tri-state, Bi-directional Connect to external source 4.3 Isolated UART, I C, SPI Interfaces The native host interfaces of the 78M6610+LMU are made available on the isolated side of the barrier at J16. Rev 1...

  • Page 13: Graphical User Interface (Gui)

    78M6610+LMU Evaluation Kit User Manual 5 Graphical User Interface (GUI) A graphical user interface (GUI) is included on the 78M6610+LMU EV kit CD to facilitate quick evaluation of the 78M6610+LMU energy measurement device. The GUI requires Microsoft.NET Framework 4 on the PC for which the GUI is to execute on.

  • Page 14: Device Tab

    78M6610+LMU Evaluation Kit User Manual 5.1.2 Device Tab The Device tab shows to current firmware build as well as the temperature and line frequency being measured. 5.1.3 Direct Tab The Direct tab allows read and write access to all the byte-addressable registers documented in the data sheet.

  • Page 15: Configuration Tab

    78M6610+LMU Evaluation Kit User Manual 5.1.4 Configuration Tab The Configuration tab is used to set up the sensor interface. Once this is done it can be saved to NVRAM for future use, or programmed to a user-defined configuration and saved. See the Calibration tab for saving the settings.

  • Page 16: Calibration Tab

    78M6610+LMU Evaluation Kit User Manual 5.1.6 Calibration Tab The Calibration tab is used to configure and execute calibration commands. The calibration targets can be viewed and changed and the scaling parameters are also displayed for convenience. The calibration and NVRAM are also saved using the provided button.

  • Page 17: Energy Tab

    78M6610+LMU Evaluation Kit User Manual 5.1.8 Energy Tab The Energy tab displays the accumulated power both into and out of the load. The pull-down menu is used to select the channel that is being displayed; A, B, or C, and update is used to update the displayed data 5.1.9...

  • Page 18: Alarms Tab

    78M6610+LMU Evaluation Kit User Manual 5.1.11 Alarms Tab The Alarms tab is a user-definable display of whatever parameters are required in a particular application. The alarms are described in detail in Sections 2.11 and 2.12 of the 78M6610+LMU Data Sheet. Rev 1...

  • Page 19: Monitor Tab

    78M6610+LMU Evaluation Kit User Manual 5.1.12 Monitor Tab The Monitor tab is a running record of all the communications between the GUI and the target 78M6610+LMU. A log file can be generated to save the transactions for later analysis. Rev 1...
  • Page 20 78M6610+LMU Evaluation Kit User Manual 6 Alternate Sensor Configurations 6.1 Split-Phase Using Shunt (On Neutral) and One CT (On Line) In this configuration, neutral is measured instead of Line 2. Results for Line 2 are indirectly calculated from the measurements on Line 1 and Neutral.

  • Page 21: Pseudo-Isolated Single-Phase Measurements Using Cts

    Move J23 and J24 jumpers to position CT to use CT2 and remove jumper at J9. J23 Jumper Description J23 Pins Description Jumper Connect J15 SHUNT to 78M6610+LMU Sensor Slot 1 Installed Connect J10 CT2+ to 78M6610+LMU Sensor Slot 1 J24 Jumper Description J24 Pins...

  • Page 22: Figure 2: 78M6610+Lmu Evaluation Board Connections

    78M6610+LMU Evaluation Kit User Manual 6.2 Pseudo-Isolated Single-Phase Measurements Using CTs In this diagram, the two voltage inputs are used to measure a single 2-wire interface for a high-impedance resistive isolation between AC and the 78M6610+LMU. Line Connect AC source...

  • Page 23: Jumper Position Changes

    Move J23 and J24 jumpers to position CT to use CT2 and remove jumper at J9. J23 Jumper Description J23 Pins Description Jumper Connect J15 SHUNT to 78M6610+LMU Sensor Slot 1 Connect J10 CT2+ to 78M6610+LMU Sensor Slot 1 Installed J24 Jumper Description J24 Pins...

  • Page 24: Hardware Design Information

    78M6610+LMU Evaluation Kit User Manual 7 Hardware Design Information This section includes the schematics, bill of materials, and PCB layouts for the 78M6610+LMU EV board. 7.1 Board Schematics +3.3V 500mA V3P3 511-LD1117S33C V3P3 CON1 SOT223 +5VISO +5VISO V3P3 VOUT 0603 0.1uF...

  • Page 25: Figure 4: 78M6610+Lmu Evaluation Board Electrical Schematic (2 Of 4)

    MP0L V3P3 LED5 0603 0603 MP4L V3P3 LED2 AMBER 0603 J24A 0603 MP6L CON11 V3P3 LED8 Y ELLOW 0603 0603 MP7L V3P3 LED6 BLUE 0603 0603 MP010L V3P3 Figure 5: 78M6610+LMU Evaluation Board Electrical Schematic (2 of 4) Rev 1...

  • Page 26: Figure 5: 78M6610+Lmu Evaluation Board Electrical Schematic (3 Of 4)

    Remove R21 and R34 if the relays are not needed and DIO0 and DIO10 are used for other purposes Green LED 0603 RLY 2 16A 5V SPDT MMBTA13/SOT 0603 0603 BAS16W/SOT323 Figure 6: 78M6610+LMU Evaluation Board Electrical Schematic (3 of 4) Rev 1...

  • Page 27: Figure 6: 78M6610+Lmu Evaluation Board Electrical Schematic (4 Of 4)

    RS485RX RS485TXENout RS485TXENout 5VIN RS485A CON4 RS485B RS485 RS485Z RS485Y 0805 MAX13433EESD+ CON2 Do NOT apply +5VDC to SIP100P2 J22-1 when USB cable is attached to J21. UGND Figure 7: 78M6610+LMU Evaluation Board Electrical Schematic (4 of 4) Rev 1...

  • Page 28: Bill Of Materials

    78M6610+LMU Evaluation Kit User Manual 7.2 Bill of Materials Item Quantity Reference Part PCB Footprint C1,C2,C7,C8,C11,C22,C23,C24,C26,C28, 0.1uF 0603 C29,C31 C3,C20,C21,C27 10uF 0805 C4,C9,C12,C10,C13,C14,C15 1000pF 0603 C5,C6 0603 C18,C19 18pF 0603 0.033uF 0603 0603 D5,D6 Green LED 0603 D7,D8 BAS16W/SOT323 SOT-323 AC...
  • Page 29 78M6610+LMU Evaluation Kit User Manual Item Quantity Reference Part PCB Footprint 0603 R52,R59 0805 R69,R70 Rburden 0805 R71,R75 R55,R76 0(NC) 0603 PUSHBUTTON SMD (SMT) Tab SW4,SW5 SW DIP-2 DIP4 78M6610+LMU/B TQFN24 FT2232C TQFP48 IL516-3E SO-16 NARROW IL612A IL611A MAX13433EESD+ SO-14 NARROW +3.3V 500mA...

  • Page 30: Pcb Layout

    78M6610+LMU Evaluation Kit User Manual 7.3 PCB Layout Figure 8: 78M6610+LMU Evaluation Board PCB Top View Rev 1...

  • Page 31: Figure 8: 78M6610+Lmu Evaluation Board Pcb Bottom View

    78M6610+LMU Evaluation Kit User Manual Figure 9: 78M6610+LMU Evaluation Board PCB Bottom View Rev 1...

  • Page 32: Contact Information

    78M6610+LMU Evaluation Kit User Manual 8 Contact Information For more information about Maxim Integrated products or to check the availability of the 78M6610+LMU, contact technical support at www.maximintegrated.com/support. Revision History REVISION REVISION PAGES DESCRIPTION NUMBER DATE CHANGED 2/13 Initial release —...
  • Page 33 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated 78M6610+LMU/EK#1 78M6610+LMUEVK1#...

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