BACnet Objects
Contents
1. NO FAULT OUTPUT E STOP HI VOLTS HI TEMP OVERLOAD OUTPUT LO VOLTS START ER BRAKE ER FOLLOWER DB ERROR PWR SAG BACnet Objects Multi State Input MSI Object Descriptions Operational State Fault Lockout Fault Start Pending Stop DC Brake Run At 0Hz Run Accelerating Decelerating Current Limit Decel Override Invalid State Keypad Stop Alternate Keypad Stop Remote Terminal Strip Stop Serial Stop Fault No Fault Output Fault E Stop High DC Bus Volts High Drive Temp Thermal Overload Output Fault Low DC Bus Volts Start Error DC Brake Error Follower Loss DB Error Power Sag 11 Value 14 15 16 17 18 19 20 21 22 23 24 25 Name CONTROL LANGUAGE EXTERNAL INTERNAL16 PWR TRAN INTERNAL18 INTERNAL19 INTERNAL20 INTERNAL21 INTERNAL22 INTERNAL23 SERIAL Fault Control Fault Language External Fault Internal Fault 16 Power Transient Internal Fault 18 Internal Fault 19 Internal Fault 20 Internal Fault 21 Internal Fault 22 Internal Fault 23 Serial Comm Loss RG MHBAC Object MSI 3 Object MSI 4 Object MSI 5 RG MHBAC BACnet Objects PID Mode This object is for monitoring the general state of the drive s PID mode as specified by Drive Parameter 70 PID Mode State Name PID Control 1 OFF PID disabled 2 NORMAL Enable direct acting system INC FDBK DEC MTR SPD 3 REVERSE Enable reverse acting system INC FDBK INC MTR SPD2. MCH BACnet points Write commands will not be accepted without proper modification to these drive settings One exception to this is STOP commands which are always accepted over the LAN For serial start and or serial speed and setpoint 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 24 AUTO SOURCE This parameter must be set to KEYPAD for the drive speed or setpoint to be modified over the LAN 30 CONTROL This parameter should be set to accommodate the specific application intent NORMAL Serial start and serial speed setpoint commands are invalid NORM NO HAND Same as NORMAL except the HAND OFF AUTO herein referred to as is limited to settings of OFF and AUTO SERIAL SPEED Serial start commands are invalid Serial speed setpoint commands are valid in AUTO H O A S SPD NO HAND Same as SERIAL SPEED except H O A is limited to settings of OFF and AUTO SERIAL AUTO Serial start and serial speed setpoint commands are all valid in AUTO H 0 A This setting forces the drive to be started over the LAN when in AUTO S AUTO NO HND Same as SERIAL AUTO except H O A is limited to settings of OFF and AUTO Serial STOP commands are accepted over the LAN regardless of this parameter setting Lenze 5 RG MHBAC EC Drive Setup amp Programming NOTE e Drive Parameter 30 CONTROL must be set
3. object is for monitoring the commanded PID Setpoint The range of this object is defined by Drive Parameter 75 Feedback Min and Drive Parameter 76 Feedback Max The unit is PID Feedback This object is for monitoring the current PID Feedback value at the input specified by Drive Parameter 74 PID Feedback The range of this object is defined by Drive Parameter 75 Feedback Min and Drive Parameter 76 Feedback Max The unit is 4 3 Analog Value AV Object Descriptions Object AV 1 Object AV 2 Lenze Keypad Speed Command This object monitors and controls the Keypad Speed Command in Hz The ability to command this object through the LAN is dictated by the setting of Drive Parameter 30 Control and the drive s current H 0 A Mode Refer to Object MSI 4 Keypad Setpoint Command This object monitors and controls the Keypad Setpoint Command The unit for this object is percent 9c The minimum and maximum values for this object are defined by Drive Parameter 75 Feedback Min and 76 Feedback Max respectively The range of adjustment for Drive Parameters 75 and 76 is 32768 to 32767 The ability to command this object through the LAN is dictated by Drive Parameter 30 Control and the drive HOA Refer to Object MSI 4 9 RG MHBAC BACnet Objects 4 4 Binary Input BI Object Descriptions Object BI 1 Object 2 Object BI 3 Object 4 Object BI 5 Object BI 6 Run S
4. 1 1 2 lesu M 1 ee cae 1 1 14 Electrical COMMGCHON u uu a L tai etn ton Eta Een un ta ten 2 kasq 2 3 2 1 MS TP COMMUNICATIONS oa a tes b he eaa E ea 3 2 2 MS TP 3 2 3 Serial Communications Wiring sess 3 Drive Setup and Programi aae u uuu e RR e 4 3 1 Added Programming Parameters eese 4 3 2 Omitted Parameters and Selections sess 4 3 3 Modified Parameters and Selections 5 3 4 Serial Communication Setup n 5 4 1 0bjects ov Ra u 8 4 1 BACnet Object Map 8 4 2 Analog Input Al Object Descriptions l 9 4 3 Analog Value AV Object Descriptions a 9 4 4 Binary Input Object Descriptions 2 10 4 5 Binary Output BO Object Descriptions sene 10 4 6 Binary Value BV Object Descriptions 10 4 7 Multi State Input MSI Object Descriptio
5. 3 The ability to command this object through the LAN is dictated by Drive Parameter 30 Control and the drive HOA refer to MSI 4 For more information on SPEED SOURCE refer to the MCH Installation and Operation Manual MH01 4 9 Reference and Links MCH Series Variable Frequency Drives visit http www lenze actech com BACnet and ASHRAE Inc visit http www bacnet org Lenze 13 RG MHBAC AC Technology Corporation 630 Douglas Street e Uxbridge MA 01569 e USA Sales 800 217 9100 eService 508 278 9100 www lenze actech com RG MHBAC e2
6. 4 TB 14 Relay 2 TB14_RELAY2 1 00 OFF ON OFF BI 5 TB 15 Relay 3 TB15_RELAY3 1 00 OFF ON OFF BI 6 Relay 1 RELAY1 1 00 OFF ON OFF BO 1 Start Stop Drive CMD RUN STOP 1 00 STP RUN STP BV 1 Clear Present Fault CLEAR FAULT 1 00 NRM CLR NRM MSI 1 Operational Status RUN STATUS 1 00 16 12 MSI 2 Present Fault FAULT 1 00 25 0 MSI 3 PID Mode PID MODE 1 00 3 0 MSI 4 H 0 A Mode HOA MODE 1 00 3 0 MSI 5 Speed Setpoint Reference SPD STPT REF 1 00 19 0 MSV 1 Speed Source Selection SOURCE SEL 1 00 s 3 0 NOTES 1 Object Types Al Analog Input AV Analog Value BI Binary Input BO Binary Output BV Binary Value MSI Multi State Input MSV Multi State Value RG MHBAC 8 Lenze BACnet Objects 4 2 Analog Input Al Object Descriptions Object Al 1 Object Al 2 Object Al 3 Object Al 4 Object Al 5 Object Al 6 Object Al 7 Actual Frequency This object represents the actual speed of the drive in Hz Command Frequency This object represents the commanded drive speed in Hz Load Percent This object represents the drive s load current as a of rated current Total Runtime This object represents the number of hours that the drive has been running since its first power up DC Bus Voltage This object represents the drive s DC Bus Voltage as a percentage of the nominal DC bus voltage PID Setpoint Command This
7. Communications MS TP communication is maintained by a Master amp Slave relationship between the devices on the LAN All communication is initiated by Master devices The token passes network mastership from one Master device to another Slave devices never initiate a service request They only respond to service requests from master devices The Native BACnet implementation in MCH Drives is for an MS TP Slave device Therefore only devices that support static device binding will be able to communicate with an MCH drive For an MS TP EIA 485 network use shielded twisted pair cable with a characteristic impedance between 100 and 130 ohms Maximum recommended length of an MS TP segment is 1200 meters 4000 feet with AWG 18 cable Maximum number of nodes unit loads per segment is 32 as specified by the EIA 485 standard Because MS TP uses non return to zero NRZ encoding the polarity of the connection to the cable is important The non inverting input of the EIA 485 transceiver is designated as and the inverting input as Connect a termination resistance of 120 ohms 5 at each of the two ends of the segment medium Ground the shield at one end only to prevent ground currents from being created Each MCH drive is equipped with 100k ohm local bias resistors MS TP Physical Layer Communication is half duplex Bytes are transmitted using NRZ encoding with 1 start bit 8 data bits no parity and 1 stop bit All bytes are transmitted
8. Lenze Series Drives BACnet Communications Guide About These Instructions This documentation applies to the use of an MCH Series Variable Frequency Drive with BACnet protocol and should be used in conjunction with the MCH Series Installation and Operation Manual Document 1 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 ASHRAE and BACnet are registered trademarks of the American Society of Heating Refrigerating and Air Conditioning Engineers Inc 1791 Tullie Circle NE Atlanta GA 30329 http www bacnet org Modbus is a registered trademark of Schneider Electric founder of Modbus IDA http www modbus IDA org 2003 AC Technology Corporation No part of this documentation may be copied or made available to third parties without the explicit written approval of AC Technology Corporation All information given in this documentation has been carefully selected and tested for compliance with the hardware and software described Nevertheless discrepancies cannot be ruled out AC Tech does not accept any responsibility nor liability for damages that may occur Any necessary corrections will be implemented in subsequent editions Contents Y Safety Information eda peor rt ndi anna n na ana x annua nua 1 1 1 Warnings Cautions and Notles I nnne 1 KAMEN 1
9. Mode This object is for monitoring the drive H O A status If the drive is OFF 1 or HAND 2 serial speed setpoint and serial start commands will not be accepted from the LAN If the drive H 0 A is AUTO 3 depending on the setting of Drive Parameter 30 Control serial speed setpoint and serial start commands will be accepted For more information refer to Section 3 4 State Name Accept Serial Command Speed Setpoint Start 1 OFF No No 2 HAND No No 3 AUTO Parameter 30 setting Parameter 30 setting Speed Setpoint Reference This object is for monitoring the source of the speed setpoint reference States 1 through 9 are speed references States 10 through 18 are setpoint references This object must be in state 1 9 or 10 for the LAN to be able to command the drive speed This object must be in state 11 or 19 for the LAN to be able to command the drive setpoint The state test table for this point is as follows State Name Description Reference 1 KEY Keypad Speed Command Open loop speed control PID Disabled 2 VDC 0 10 VDC on TB 5A Open loop speed control PID Disabled 3 IDC 4 20 mA on TB 5B Open loop speed control PID Disabled 4 SP 1 Preset Speed 1 Open loop speed control PID Disabled 5 SP 2 Preset Speed 2 Open loop speed control PID Disabled 6 SP 3 Preset Speed 3 Open loop speed control PID Disabled 7 SP 4 Preset Speed 4 Open loop speed control PID Disabled 8 MOP Motor Operated Pot Open loo
10. course of action This object reflects the highest priority RUN STOP command in the priority array Therefore if this object is used to issue a RUN command to the drive but a higher priority STOP command had been issued by another device this object will continue to read STP NOTE When in Programming Mode the drive will not accept START commands from the LAN 4 6 Binary Value BV Object Descriptions Object BV 1 RG MHBAC Clear Present Fault This object is used to clear the current fault through the LAN Set this object to CLEAR 1 to clear the present fault Once this object has been used to clear a fault it must be commanded to NORMAL 0 before it can be used to clear another fault Consecutive CLEAR commands cannot be accepted 10 Lenze 4 7 Object MSI 1 Object MSI 2 Lenze Operational Status This object is for monitoring the actual operating condition of the drive The value returned is a number between 1 and 16 which corresponds to one of the following operating states Value o O O F cO 10 11 12 13 14 15 16 Name LOCK FAULT PEND STOP BRAKE RUN 0 RUN ACCEL DECEL LIMIT F DEC INVAL KSTOP KSTOP RSTOP SSTOP Present Fault This object indicates the type of fault on which the drive is currently tripped This object returns a value between 1 and 25 which corresponds to one of the following fault conditions Value o O lI Oo
11. e highest priority command in the priority array If PRESET 3 is selected Drive Parameter 30 Control is set to SERIAL SPEED and the drive is running when a timeout occurs the drive will continue to run but will get its speed command from Drive Parameter 3 PRESET 3 If the drive is stopped KSTOP RSTOP SSTOP or FAULT placed in HAND or OFF or serial communications are restored the drive will return to its normal speed setpoint reference When Drive Parameter 30 Control is set to SERIAL SPEED the speed reference MUST be the drive keypad KEY MKB AKB or SER for the serial loss action to take effect If Drive Parameter 30 Control is set to SERIAL AUTO the serial loss action is ignored and the drive trips into a SERIAL FAULT stopping the drive and taking it out of serial control RG MHBAC 6 Lenze D Drive Setup amp Programming lt 57 SERIAL This parameter needs to be set to either WITH TIMER default or W 0 TIMER for the drive to communicate with the LAN Serial communications will not work if this parameter is set to DISABLED 58 MAC ADDRESS This parameter contains the address of the MCH drive It is adjustable from 0 254 and has a factory default value of 128 60 SERIAL TIMEOUT This parameter makes the serial watchdog timeout period selectable It has a minimum value of 10 seconds and maximum value of 65535 seconds The default is 30 seconds If no action is to be taken when a serial watchdog timeout occurs D
12. es information on compliance with EN 61000 3 2 When installing the drive controllers in machines commissioning i e the starting of operation as directed is prohibited until it is proven that the machine complies with the regulations of the EC Directive 98 37 EC Machinery Directive EN 60204 must be observed Commissioning i e starting drive as directed is only allowed when there is compliance to the EMC Directive 89 336 EEC The drive controllers meet the requirements of the Low Voltage Directive 73 23 EEC The harmonised standards of the series EN 50178 DIN VDE 0160 apply to the controllers The availability of controllers is restricted according to EN 61800 3 These products can cause radio interference in residential areas In the case of radio interference special measures may be necessary for drive controllers 1 1 3 Installation Ensure proper handling and avoid excessive mechanical stress Do not bend any components and do not change any insulation distances during transport or handling Do not touch any electronic components and contacts Controllers contain electrostatically sensitive components which can easily be damaged by inappropriate handling Do not damage or destroy any electrical components since this might endanger your health When installing the drive ensure optimal airflow by observing all clearance distances in the drive s user manual Do not expose the drive to excessive vibration temperature humidity sunli
13. ght dust pollutants corrosive chemicals or other hazardous environments Lenze 1 RG MHBAC 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 The regulatory documentation contains information about installation in compliance with EMC shielding grounding filters and cables These notes must also be observed for CE marked controllers The manufacturer of the system or machine is responsible for compliance with the required limit values demanded by EMC legislation 1 1 5 Operation Systems including controllers must be equipped with additional monitoring and protection devices according to the corresponding standards e g technical equipment regulations for prevention of accidents etc You are allowed to adapt the controller to your application as described in the documentation DANGER e After the controller has been disconnected from the supply voltage do not touch the live components and power connection until the capacitors have discharged Please observe the corresponding notes on the controller Do not continuously cycle input power to the controller more than once e
14. kes the serial watchdog timeout period selectable Section 3 4 85 DEVICE NUM EX This parameter is used to extend the device number to its full 22 bit range of 0 to 4194303 If the device number of the drive exceeds a value of 65535 this parameter should be set to the value of bits 16 22 of the device number Otherwise this parameter should be set to 0 86 DEVICE NUMBER This parameter holds the value of bits 0 15 of the drive s 22 bit device number It can be used by itself to represent a device number in the range of 0 to 65535 If the device number exceeds 65535 then DEVICE NUM EX must also be used Example The device number is 124 00007Ch The value of bits 16 22 DEVICE NUM EX is 00h or 0 The value of bits 0 15 DEVICE NUMBER is 007Ch or 124 Example The device number is set to its default value of 1240000 12EBCOh The value of bits 16 22 DEVICE NUM EX is 12h or 18 The value of bits 0 15 DEVICE NUMBER is EBCOh or 60352 NOTE The values of the DEVICE NUMBER and DEVICE NUM EX parameters are also appended to the object name of the drive to ensure that it is unique network wide Example If the device number of the drive is set to its default value of 1240000 12EBCOh the resulting object name for the device will be AC Tech VFD 18 60352 Omitted Parameters and Selections 36 SLEEP THRESHOLD Sleep Mode functionality has not been added to the Series BACnet 37 SLEEP DELAY drive so these drive
15. ns 11 4 8 Multi State Value MSV Object Descriptions 13 4 9 R rerence and n nn u 13 Lenze i RG MHBAC Safety Information 1 Safety Information 1 1 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 All operations concerning transport installation and commissioning as well as maintenance must be carried out by qualified skilled personnel IEC 364 and CENELEC HD 384 or DIN VDE 0100 and IEC report 664 or DIN VDEO110 and national regulations for the prevention of accidents must be observed According to this basic safety information qualified skilled personnel are persons who are familiar with the installation assembly commissioning and operation of the product and who have the qualifications necessary for their occupation 1 1 2 Application Drive controllers are components designed for installation in electrical systems or machinery They are not to be used as appliances They are intended exclusively for professional and commercial purposes according to EN 61000 3 2 The documentation includ
16. p speed control PID Disabled 9 SER Serial Speed Command Open loop speed control PID Disabled 10 MKB Keypad Speed Command Open loop speed control PID Enabled 11 AKB Keypad Setpoint Command Closed loop setpoint control PID Enabled 12 Lenze BACnet Objects State Description 12 VDC 0 10 VDC on TB 5A 13 IDC 4 20 mA TB 5B 14 SP 1 Preset Setpoint 1 15 SP 2 Preset Setpoint 2 16 SP 3 Preset Speed 3 17 SP 4 Preset Setpoint 4 18 MOP Motor Operated Pot 19 SER Serial Setpoint Command 4 8 Multi State Value MSV Object Descriptions Object MSV 1 Speed Source Selection Reference Closed loop setpoint control PID Enabled Closed loop setpoint control PID Enabled Closed loop setpoint control PID Enabled Closed loop setpoint control PID Enabled Open loop speed control PID Enabled Closed loop setpoint control PID Enabled Closed loop setpoint control PID Enabled Closed loop setpoint control PID Enabled This object mimics the functionality of the SPEED SOURCE key on the drive keypad It is used to determine whether the drive will get its speed setpoint reference from Drive Parameter 24 Auto Source or Drive Parameter 29 Hand Source State Name Reference Source 1 NORMAL Normal Source 2 HAND Hand Source Only 3 AUTO Auto Source Only This object allows the user to toggle between OPEN loop speed control and CLOSED loop PID control when PID mode is ENABLED refer to MSI
17. parameters do not exist 38 SLEEP BANDWIDTH 41 ANALOG INPUT FILTER 52 TB14 OUT The following options have not been added to these parameters in the MCH 53 TB15 OUT Series BACnet amp drive 54 RELAY INV MIN MAX A MIN ALARM INV MIN ALARM MAX ALARM INV MAX ALARM RG MHBAC 4 Lenze D Drive Setup amp Programming ENS 3 3 Modified Parameters and Selections 24 AUTO SOURCE The default selection for this parameter has been changed to KEYPAD Refer to Section 3 4 Serial Communications Setup for more information 32 HZ MULTIPLIER The default setting for this parameter has been changed to 30 00 Refer to Section 3 4 Serial Communications Setup for more information 56 SERIAL LOSS The selections for this parameter are FAULT default and PRESET 3 The functionality of this parameter is described in detail in Section 3 4 Serial Communications Setup 57 SERIAL The default selection for this parameter has been changed to WITH TIMER to provide limited out of thebox serial communication with the drive 58 MAC ADDRESS This parameter has been renamed to be consistent with BACnet nomenclature The minimum and maximum values for this parameter have also been changed to 0 and 254 respectively in accordance with ANSI ASHRAE Standard 135 2001 The default value is 128 Refer to Section 3 4 for more information 3 4 Serial Communication Setup The factory default values of the drive parameters have been set to allow the monitoring of all
18. rive Parameter 57 Serial should be set to W O TIMER This will disable the watchdog timer Otherwise Drive Parameter 57 Serial should be set to WITH TIMER If the LAN has started the drive or has modified the Speed Source Selection MV1 the Keypad Speed Command AV1 or the Keypad Setpoint Command AV2 and a serial watchdog timeout occurs the drive is taken out of serial control If Drive Parameter 30 Control is set to SERIAL AUTO and the drive was running when the timeout occurred the drive will also stop the motor by tripping into a SERIAL FAULT A fault reset command issued via Clear Fault BV1 a keypad stop or a terminal stop is required to clear the fault If Drive Parameter 30 Control is set to SERIAL SPEED then the action to be taken when a timeout occurs is determined by Drive Parameter 56 Serial Loss When Drive Parameter 30 Control is set to SERIAL SPEED the speed reference being used MUST be set to the drive keypad KEY MKB AKB or the LAN SER for the serial watchdog to be active When Drive Parameter 30 is set to SERIAL AUTO the serial watchdog will be active with any speed reference Also if the LAN has written to the keypad speed command the speed source changes from keypad to serial and the keypad speed command cannot be changed using the drive keypad In order for the drive keypad to take control of the keypad speed command the drive H 0 A must be toggled to HAND or OFF to release serial cont
19. rol of the corresponding BACnet object The same is true of the keypad setpoint command and the speed source selection Lenze 7 RG MHBAC BACnet Objects 4 BACnet Objects The MCH BACnet Objects are divided into seven types analog input analog value binary input binary output binary value multi state input and multi state value Sections 4 2 through 4 8 describe each of these object types and the individual object instances within each 41 Object Map Table 2 BACnet Object Map for Series Drives Object Object Description Object Name Point Resolution Texts Number Default Type Instance Units Inactive Active ofStates Value Al 1 Actual Frequency OUTPUT FREQ Hz 0 01 0 Al 2 Command Frequency COMMAND FREQ Hz 0 01 20 00 Al 3 Load Percent LOAD PERCENT 1 00 0 Al 4 Total Runtime RUNTIME HRS Hr 1 00 0 Al 5 DC Bus Voltage DC BUS VOLTS 1 00 0 6 PID Setpoint Command PID SETPOINT 1 00 50 Al T PID Feedback PID FEEDBACK 1 00 0 AV 1 Keypad Speed Command KEY SPD CMD Hz 0 01 20 00 AV 2 Keypad Setpoint Command KEY STPT CMD 1 00 50 BI 1 Run Stop Status RUN STOP 1 00 STP RUN STP BI 2 Current Direction DIRECTION 1 00 FWD REV FWD BI 3 Fault Condition OK FAULT 1 00 OK FLT OK BI
20. to SERIAL AUTO or S AUTO NO HND in order to start the drive over the LAN e The upper left corner of the drive display must indicate SSTOP for a serial start command to be accepted by the drive e fthe display reads KSTOP keypad stop then the AUTO START or HAND START button must be pressed to clear the keypad stop condition e fthedisplay reads RSTOP remote terminal stop then there is an open external contact that needs to be closed e drive is a standalone drive or has an option box make sure that the TB1 to TB2 contact is being made e fthe drive has a bypass make sure that the drive is in AUTO and that all of the safety and customer start contacts are closed specifically the B3 to B4 contact which is not made when the drive leaves the factory 56 SERIAL LOSS This parameter sets the action to be taken in the event that the Drive Parameter 30 Control is set to SERIAL SPEED and the LAN had modified the speed or setpoint command prior to a serial watchdog timeout occurrence 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 A fault reset command issued via the Clear Fault point a keypad stop or a terminal stop is required to clear the fault A stop command from the LAN will also clear the fault if it is th
21. top Status This object indicates whether or not the drive is currently running Current Direction This object indicates the direction in which the drive is currently running Fault Condition This object indicates whether or not the drive is currently tripped on a fault This object returns 0 OK if the drive is not in a fault condition or 1 FAULT if it currently is faulted TB 14 Relay 2 This object monitors the state of the drive s TB 14 or Relay 2 output This object can be used to indicate various drive conditions as specified by Drive Parameter 52 TB14 Relay 2 Refer to the MCH Installation and Operation Manual MH01 for more information TB 15 Relay 3 This object monitors the state of the drive s TB 15 or Relay 3 output This object can be used to indicate various drive conditions as specified by Drive Parameter 53 TB15_ Relay 3 Refer to the Installation and Operation Manual MH01 for more information Relay 1 This object monitors the state of the drive s Relay 1 output This object can be used to indicate various drive conditions as specified by Drive Parameter 54 RELAY1 Refer to the MCH Installation and Operation Manual MH01 for more information 4 5 Binary Output BO Object Descriptions Object BO 1 Start Stop Drive This object is used to issue RUN STOP commands to the drive The RUN STOP commands are placed in the priority array which is then processed to determine the appropriate
22. very three minutes e Close all protective covers and doors during operation WARNING Network control permits automatic starting and stopping of the inverter drive The system design must incorporate adequate protection to prevent personnel from accessing moving equipment while power is applied to the drive system gt P Table 1 Pictographs used in these instructions Pictograph Signal word Meaning Consequences if ignored DANGER Warning of Hazardous Electrical Reference to an imminent danger that may Voltage result in death or serious personal injury if the corresponding measures are not taken WARNING Impending or possible danger Death or injury for persons STOP Possible damage to equipment Damage to drive system or its surroundings NOTE Useful tip If observed it will make using the drive easier P P RG MHBAC 2 Lenze 2 1 2 2 2 3 Introduction i Introduction This document will explain how to operate an MCH Drive using BACnet protocol on a Master Slave Token Passing MS TP LAN 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 Some of the information contained in this document was provided by the ANSI ASHRAE 135 2001 standard Refer to http www bacnet org for more information MS TP
23. with the least significant bit first Communication is asynchronous with no more than 20 bit times of idle time between any two bytes of a frame The communication baud rate for MCH Series Drives is 9600 bps The bit sequence is as follows DATA START 1 2 3 4 5 6 7 8 STOP Serial Communications Wiring Figure 1 illustrates the MCH Series Terminal Strip and connections for an MS TP LAN 1 2 sa 58 6 oA 108 2 12 13A 13 130 14 15 2 xA xe 16 17 18 ElA 485 XY EIA 485 Earth Ground Figure 1 MCH Terminal Strip Connect EIA 485 terminal to MCH terminal TXB Connect EIA 485 terminal to MCH terminal RXA Connect MCH terminal 2 to Earth Ground Lenze 3 RG MHBAC 3 1 3 2 Drive Setup amp Programming Drive Setup and Programming Most drive parameters including those required for serial communications are not accessible through the LAN 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 MHO1 is based on the standard Series Modbus Drive The differences between the drive programming parameters described in the manual and those that exist in the MCH Series BACnet Drive are explained in sections 3 1 3 3 herein Added Programming Parameters 60 SERIAL TIMEOUT This parameter ma
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