Lenze AC Tech LonWorks MCH Series Communications Manual
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Lenze AC Tech LonWorks MCH Series Communications Manual

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MCH Series Drives
LonWorks Communications Guide

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Summary of Contents for Lenze AC Tech LonWorks MCH Series

  • Page 1 MCH Series Drives LonWorks Communications Guide...
  • Page 2 About These Instructions This documentation applies to the use of an MCH Series Variable Frequency Drive with LonWorks protocol and should be used in conjunction with the MCH Series Installation and Operation Manual (Document MH01) that shipped with the drive. These documents should be read in their entirety as they contain important technical data and describe the installation and operation of the drive.

  • Page 3: Table Of Contents

    Contents 1 Safety Information ......................1 Warnings, Cautions and Notes ................1 1.1.1 General ....................1 1.1.2 Application ....................1 1.1.3 Installation ....................1 1.1.4 Electrical Connection ................2 1.1.5 Operation ....................2 2 Introduction ........................3 Hardware Description ...................3 LED Status Indicators ....................4 Serial Communications Wiring ................5 3 Drive Setup and Programming ...................6 Added Programming Parameters ................6 Bus Configuration Parameters ................7...

  • Page 4: Safety Information

    Safety Information Safety Information Warnings, Cautions and Notes 1.1.1 General Some parts of Lenze controllers (frequency inverters, servo inverters, DC controllers) can be live, moving and rotating. Some surfaces can be hot. Non-authorized removal of the required cover, inappropriate use, and incorrect installation or operation creates the risk of severe injury to personnel or damage to equipment.

  • Page 5: Electrical Connection

    Safety Information 1.1.4 Electrical Connection When working on live drive controllers, applicable national regulations for the prevention of accidents (e.g. VBG 4) must be observed. The electrical installation must be carried out in accordance with the appropriate regulations (e.g. cable cross-sections, fuses, PE connection). Additional information can be obtained from the regulatory documentation.

  • Page 6: Introduction

    Introduction Introduction This document explains how to connect an MCH Drive to a LonWorks® network. It is intended as a serial communications supplement only and will not discuss normal drive operations. For more information regarding normal drive setup and functionality, refer to the MCH Installation and Operation Manual (MH01). LonWorks®...

  • Page 7: Led Status Indicators

    Drive Setup & Programming LED Status Indicators LED 1 - Drive Communication This LED indicates the communication status between the comm module and the drive. LED State Indicates: Steady Green Link OK Steady Red Link lost, permanent Flashing Red Link lost, temporary LED 2 - Service This LED indicates the node configuration and application status.

  • Page 8: Serial Communications Wiring

    Drive Setup & Programming Serial Communications Wiring Figure 2 illustrates one method of wiring the MCH Series LonWorks® Bus Connector with an optional switch to provide remote operation of the service pin. Optional Switch MCH LonWorks Bus Connector Shield (For remote Ground operation of service pin...

  • Page 9: Drive Setup And Programming

    Drive Setup & Programming Drive Setup and Programming Most drive parameters (including those required for serial communications) are not accessible through the LonWorks® interface. They can only be accessed by entering the Programming Mode of the drive itself. Refer to the MCH Installation and Operation Manual (MH01) for more information. The parameter information in manual MH01 is based on the standard MCH Series Modbus™...

  • Page 10: Bus Configuration Parameters

    Drive Setup & Programming Bus Configuration Parameters The Bus configuration parameters are only used to provide additional information about the installation state of the drive. As the address information usually is assigned from the network side in a LonWorks network, in the programming mode of the drive, these parameters are read-only. 100 NODE STATE This parameter contains the current state of the network interface.
  • Page 11 Drive Setup & Programming Each domain in a LonWorks network has a unique ID of 0, 1, 3 or 6 bytes in length. If the ID is shorter than 6 bytes, it is left justified in the following parameters (109-114). 109 DOMAIN ID 1 [5] Byte 6 of the domain ID (MSB) 110 DOMAIN ID 1 [4]...

  • Page 12: Omitted Parameters And Selections

    Drive Setup & Programming Omitted Parameters and Selections 36 SLEEP THRESHOLD Sleep Mode functionality has not been added to the MCH Series LonWorks® drive so these drive parameters do not exist. 37 SLEEP DELAY 38 SLEEP BANDWIDTH 41 ANALOG INPUT FILTER 52 TB14 OUT The following options have not been added to these parameters in the MCH Series LonWorks®...

  • Page 13: Serial Communication Setup

    Drive Setup & Programming Serial Communication Setup The factory default values of the drive parameters have been set to allow immediate serial communications (without serial stop/start and serial speed commands). For serial speed and/or serial start/stop control, modify the setting of Drive Parameter #30 (Control). The drive parameters that are required for serial communications, including Drive Parameter #30, are described herein.
  • Page 14 Drive Setup & Programming 56 SERIAL LOSS This parameter sets the action to be taken in the event that the LON has modified the speed command or started the drive and a serial watchdog timeout occurs. The options for this parameter are FAULT (default) and PRESET#3. If FAULT is selected and the drive is running when a serial watchdog timeout occurs the drive will trip into a SERIAL FAULT stopping the drive and taking it out of serial control.

  • Page 15: Mch Lonworks® Network Variables

    LonWorks Network Variables MCH LonWorks® Network Variables The MCH LonWorks® Network Variables (nv) are divided into three types: input, output and configuration. Sections 4.2 - 4.5 describe each of these variable types and the individual supported variables within each. LonWorks® Network Variable Map Figure 3 is a visual map of the supported LonWorks®...

  • Page 16: Supported Input Network Variables

    LonWorks Network Variables Supported Input Network Variables NviObjRequest Definition Network input SNVT_obj_request nviObjRequest; Explanation This input is used to enable control commands and updates from the network. The status of the node is reported in nvoObjStatus. Valid range: Object Request Function RQ_UPDATE_STATUS Updates nvoObjStatus RQ_CLEAR_STATUS...
  • Page 17 LonWorks Network Variables NviDrvSpdScl Definition Network input SNVT_lev_percent nviDrvSpeedScale Explanation This input network variable provides scaling for nviDrvSpeedStpt (0.005% resolution). For example, if the value of nviDrvSpeedStpt is 100% and nviDrvSpdScl value is 150%, then the actual speed setpoint value is 150% meaning that the drive should run at 1.5 times nominal speed in the forward direction.

  • Page 18: Supported Output Network Variables

    LonWorks Network Variables NviEmrgOvrd Definition Network input SNVT_hvac_emerg nviEmrgOvrd Explanation HVAC Emergency Mode. This input network variable provides the ability to stop the motor in case of an emergency. Valid Range: Setting Function EMERG_NORMAL Not emergency mode, motor control enabled EMERG_PRESSURIZE No functionality in this implementation EMERG_DEPRESSURIZE...
  • Page 19 LonWorks Network Variables NvoDrvCurnt NOTE: This parameter is not supported in drives with software version MC11101 or MC11102. Definition Network output SNVT_amp nvoDrvCurnt Explanation This output network variable provides the drive output current in Amps. Valid Range 0.0 to 3276.7 A Default Value 0.0 A NvoDrvRunHours...
  • Page 20 LonWorks Network Variables NvoFreqAct Definition Network output SNVT_freq_hz nvoFreqAct Explanation This output network variable provides the speed of the drive in Hz. Valid Range 0.0 - 120.00 Hz Default Value 0.00 Hz NvoDrvStatus Definition Network output SNVT_state nvoDrvStatus Explanation This output network variable provides the status of the drive. Valid Range Name Description...
  • Page 21 LonWorks Network Variables NvoRunning Definition Network output SNVT_switch nvoRunning Explanation This output indicates whether or not the motor is running. Valid Range: State Value Command 0.0% The motor is not running 100.0% The motor is running Default Value NvoFaulted Definition Network output SNVT_switch nvoFaulted Explanation This output indicates whether or not the drive is currently faulted.

  • Page 22: Supported Configuration Network Variables

    LonWorks Network Variables Supported Configuration Network Variables NciSndHrtBt Definition Network config input SNVT_time_sec nciSndHrtBt Explanation This input configuration network variable provides the maximum send time for the variable nvoDrvSpeed. Valid Range 0.0 to 6553.5 sec The value 0 disables the Send Heartbeat mechanism. The value 0xFFFF represents invalid data.
  • Page 23 LonWorks Network Variables nciNmlSpeed Definition Network config input SNVT_rpm nciNmlSpeed Explanation This configuration property is used to provide the nominal speed of the motor. Valid Range 1 to 65000 RPM The value 0xFFFF represents invalid data. Default Value 1800 RPM nciNmlFreq Definition Network config input SNVT_freq_hz nciNmlFreq...
  • Page 24 LonWorks Network Variables nciRampUpTm Definition Network config input SNVT_time_sec nciRampUpTm Explanation This configuration property is used to set the ramp up time of the drive (i.e. the time that it will take for the drive to ramp the motor from 0.00Hz to Max Frequency). Valid Range 0.1 to 3600.0 sec (Refer to MCH Installation and Operation Manual for the actual minimum boundary)
  • Page 25 LonWorks Network Variables nciStopMode Definition Network config input SNVT_switch nciStopMode Explanation This input network variable is used to choose between coast and ramp stop. Valid Range: State Value Command 0.0% Coast to stop 100.0% Ramp to stop Default Value nciStopLevel Definition Network config input SNVT_lev_percent nciStopLevel Explanation...

  • Page 26: Lonworks Xif Files

    LonWorks Network Variables nciParWrite Definition Network config input SNVT_count nciParWrite Explanation Chooses the parameter value to be written to the drive. Valid Range 1 - 46 Default Value LonWorks XIF Files The LonMark external interface (or XIF) file is used to set up a LonWorks network with an MCH Series drive that has not yet been commissioned.
  • Page 27 AC Technology Corporation 630 Douglas Street • Uxbridge MA 01569 • USA Sales: 800-217-9100 •Service: 508-278-9100 www.lenze-actech.com RG-MHLON-e3...

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