This documentation applies to the RS-485 / LECOM communications option for the SMVector inverter and should be
used in conjunction with the SMVector Operating Instructions (Document SV01) 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 and this option.
WARNING!
The information in this document is based on RS-485 LECOM Communication Module software version 1.20. If a
future revision of software contains differences in the register numbering or register definitions, drive operation
could be seriously affected. If drive parameter P494 does not display 1.20, then writing to any drive register over
the network MUST NOT BE ATTEMPTED as it would have the potential for unexpected consequences potentially
resulting in damage to the equipment or harm to personnel. Future releases of module software require that the
appropriate documentation be used for implementation.
NOTE
To use the LECOM option of the RS-485 communication module with the SMVector (0.33-10HP) requires standard
software version 3.0 or later. All SMVector 15HP (11kW) and higher models support the LECOM option on the
RS-485 communication module.
No part of this documentation may be copied or made available to third parties without the explicit written approval of
Lenze AC Tech 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. We do not accept any responsibility nor
liability for damages that may occur. Any necessary corrections will be implemented in subsequent editions.
Page 3
Contents
1 Safety Information .....................................................................................................................................................2
1.1 General ........................................................................................................................................................................ 2
4 Parameters for use with RS-485/LECOM ....................................................................................................................8
4.1 Drive Communication Parameters................................................................................................................................. 8
5.3 Code Number (C1, C2) ................................................................................................................................................ 11
5.3.1 Standard Addressing.................................................................................................................................. 11
5.3.2 Addressing via Code Bank ......................................................................................................................... 11
5.3.3 Addressing via Input Selection ................................................................................................................... 12
5.4 Parameter Value (V1 to Vn) ......................................................................................................................................... 12
5.5 Block-Check Character (BCC) ..................................................................................................................................... 14
7.2 Drive Programming and Control .................................................................................................................................. 18
8.1 Configuration and Control Registers ............................................................................................................................ 19
8.1.1 C1050 (Network Controlled Digital Output) ................................................................................................. 22
8.1.2 C1055 (Network Controlled Analog Output) ................................................................................................ 22
9.1 Fault History (P500) .................................................................................................................................................... 23
9.2 Drive ID (P502) ........................................................................................................................................................... 24
9.3 Terminal and Protection Status (P530) ........................................................................................................................ 25
9.4 Keypad Status (P531) ................................................................................................................................................. 25
10 Troubleshooting and Fault Elimination ......................................................................................................................26
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 VDE0110 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.
1.2 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 includes information on compliance with EN 61000-3-2.
Safety Information
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 2006/42/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 (2004/108/
EC).
The drive controllers meet the requirements of the Low Voltage Directive 2006/95/EC. 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.
1.3 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, sunlight, dust, pollutants, corrosive chemicals or other hazardous environments.
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.
2CMVLC401A
Page 5
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.
Safety Information
DANGER!
• 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 every three minutes.
• 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.
Table 1: Pictographs used in these instructions
PictographSignal WordMeaningConsequences if Ignored
DANGER!
Warning of Hazardous
Electrical Voltage.
Reference to an imminent danger that may
result in death or serious personal injury if
the corresponding measures are not taken.
WARNING!
STOP!
NOTE
Impending or possible
danger for persons
Possible damage to
equipment
Useful tip: If observed, it will
make using the drive easier
Death or injury
Damage to drive system or its
surroundings
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Page 6
2 Introduction
Right-hand Label:
This reference guide assumes that the reader has a working knowledge of the LECOM Protocol and familiarity with the
programming and operation of motion control equipment. This guide is intended as a reference only.
2.1 Module Specifications
Table 2 identifies the LECOM serial communication specifications. If the specification is fixed (non-adjustable) the value
is shown under “Range”, if the specification is selectable, the table identifies the Parameter and available range of
selections.
Typical communications between master and slave would be:
Figure 1 illustrates the labels on the SMV RS-485 communications module. The SMVector RS-485 module is identifiable by:
• Two labels affixed to either side of the module.
• The color coded identifier label in the center of the module.
COMM I/O ONLY
S/N: 123456789
Left-hand Label:
Module Data
SMV RS-485
TYPE: ESVZAR0
ID-NO: 12345678
ESVZAR0-000XX1A10
Ratings & Certifications
LISTED
Fieldbus Identifier:
R = RS-485 (Modbus RTU/LECOM)
R0
A
B
C
D
E
A: Fieldbus Protocol
B: Model Number
C: Lenze Order Number
D: Firmware Revision
E: Hardware Revision
Figure 1: RS-485 Module Labels
4CMVLC401A
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3 Installation
3.1 Mechanical Installation
1. Ensure that for safety reasons the AC supply has been disconnected before opening the terminal cover.
2. Insert the RS-485 option module in the terminal cover and securely “click” into position as illustrated in Figure 2.
3. Wire the network cables to the connector provided, as detailed in paragraphs 3.2 (RS-485 Terminal Block) and 3.3
(Electrical Installation), and plug the connector into the option module.
4. Align terminal cover for re-fitting, connect the module umbilical cord to the drive then close the cover and secure,
as shown in Figure 3.
Installation
1 2 3 4 5
0.5 Nm/ 4.5 lb-in
<_ 2.8 mm
(12-22 AWG)
7mm
NEMA 1 (IP31) ModelsNEMA 4X (IP65) Models
Figure 2: Installing the RS-485 Communications Module
NEMA 1 (IP31) ModelsNEMA 4X (IP65) Models
Figure 3: Re-installing the Terminal Cover
CMVLC401A
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Page 8
3.2 RS-485 Terminal Block
For a LECOM network, wire the RS-485 connector as detailed in Table 3.
TerminalDescriptionImportantRS-485 Connector
1Earth ground / shield For reliable communication make sure terminal is
2TXAIf controller is located at either end of the network,
3No connection
4TXB
5No connection
Protection against contact
• All terminals have basic isolation (single insulating distance)
• Protection against contact can only be ensured by additional measures (i.e. double insulation)
3.3 Electrical Installation
Installation
Table 3: RS-485 Pin Designation
connected to the LECOM network GND/common. If
only two wires are used (TXA and TXB) in the network,
connect Terminal 1 to chassis/earth ground.
a terminating resistor (120ohm typical) should be
connected across TXA and TXB
5
4
3
2
1
3.3.1 Cable Types
For RS-485 LECOM-B networks, use a quality shielded twisted pair cable. The use of low quality cable will result in
excess signal attenuation and data loss.
3.3.2 Network Limitations
There are several limiting factors that must be taken into consideration when building an RS-485 LECOM network:
• LECOM-B networks are limited to: 31 devices (w/o repeaters); 90 w/ repeaters).
• Topology: Without repeaters: line; with repeaters: line or tree.
• Maximum total network length is 1200 m depending on the baud rate and cable used.
• Minimum of 1 meter of cable between nodes.
3.3.3 Connections and Shielding
To ensure good system noise immunity all networks cables should be correctly grounded:
• Minimum grounding recommendation: ground the network cable once in every cubical.
• Ideal grounding recommendation: ground the network cable on or as near to each drive as possible.
• For wiring of cable to the connector plug the unscreened cable cores should be kept as short as possible;
recommended maximum of 20mm. The shield connection of terminal 1 should also be wired to earth (PE).
2
1
Connect to
drive earth
(PE)
Figure 4: Connector Wiring Diagram
6CMVLC401A
34
5
20mm
max
Page 9
3.3.4 Network Termination
For an RS-485 network it is essential to install the specified termination resistors (120W), i.e. one at both ends of a network
segment. Failure to do so will result in signals being reflected back along the cable which will cause data corruption.
An external 120W 1/4W resistor can be connected as shown in Figure 5.
Installation
2
1
34
5
Connect to
drive earth
(PE)
120Ω
1/4W
Figure 5: Network Termination Resistor
20mm
max
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Page 10
Commissioning
4 Parameters for use with RS-485/LECOM
4.1 Drive Communication Parameters
The parameters listed in Table 5 are always present on the drive, even if there is no communication module installed.
Network Fault00 No FaultRead only, see P425 and P426
1 Network Time-out,
P406
ProprietaryModule specificRead only
NOTE:
If this parameter returns a value of 16, the software version in this SMVector drive
does not support the LECOM functionality. Contact factory technical support.
P498
Missed Messages
Drive to Module
P499
Missed Messages
Module to Drive
n )
11 )
IMPORTANT
Read only
and module are working properly.
Module type mismatch (
Protocol Selection mismatch (
0 )
0 )
Returns module parameters 401…499 to
the default values shown in this manual.
SPI Time-out.
• SPI Time-out is fixed at 200ms.
F
Read only
Read only
8CMVLC401A
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4.2 RS485 LECOM-Specific Parameters
The parameters listed in Table 6 are only present in the drive if there is an RS485 communication module installed,
P400 = 7 and the module is online (P402 = 3).
Commissioning
Table 6: RS485 LECOM-Specific Parameters
CodePossible Settings
No.NameDefault Selection
P410
P411
Network address11 99The values 00, 10, 20, 30 … 90 must not
Network
Baud Rate
00 9600 bps
1 4800 bps
2 2400 bps
3 1200 bps
4 19200 bps
P420
Network Control
Level
00 Monitor OnlyP420 =2, 3: setpoint control using code
1 Parameter Programming
2 Programming and Setpoint Control
3 Full Control
4 Full Control (Special)
be used since they are reserved for group
addressing (see section 6.4).
number C0046 or C1061.
P420 = 3, 4: drive control using code
numbers C0040 and/or C0135
P420 = 4: setting C0140 = 0 results in
Quick Stop
Stop commands (QUICK STOP, INHIBIT)
will always be accepted.
• When number of messages exceed
9999, counter resets and resumes
counting from 0.
• Read only
• Format: x.yz
• Alternating Display: xxx-; -yy
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Commissioning
5 LECOM Protocol Details
5.1 LECOM - A/B Protocol Description
The LECOM-A/B protocol is used to exchange data between SMV controllers and a host. The LECOM-A/B protocol is
based on DIN 66019, ISO 1745 and ANSI X3.28 (category 2.5 and A2, A4). These standards are similar to each other
and describe the control mode of a transmission section of a transmission system.
The host (the master) can communicate with a slave (SMV controller) in three modes:
• RECEIVE (refer to 6.2)
• SEND (refer to 6.3)
• BROADCAST/MULTICAST (refer to 6.4)
The controllers communicate by means of the ASCII code:
One or more bus devices (slaves) can be selected by means of the controller address, which is 2 bytes (AD1, AD2) long.
The LECOM-A/B protocol supports the broadcast telegrams, i.e. a telegram is sent to a group or all other bus devices.
For this, controller addresses are reserved (refer to BROADCAST, 6.4). Controller addresses have the following structure:
The abbreviations have the following meanings:
AD1 ASCII ten-digit of the slave address (0 ... 9; 30 ... 39
AD2 ASCII one-digit of the slave address (0 ... 9; 30 ... 39
AD1AD2
)
hex
hex
)
10CMVLC401A
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5.3 Code Number (C1, C2)
5.3.1 Standard Addressing
The meaning of the code numbers and the assigned parameters can be obtained from the code table (in section 9) and
the SMV Operating Instructions Manual (SV01, section10). When transmitting data, the code number is coded as follows:
The following calculation determines the two ASCII digits from the code number (value range: 0 ... 6229) (value range:
48
The code number C1002 is converted into the ASCII string “E<”, if they are transmitted to the controller by a host.
5.3.2 Addressing via Code Bank
With previous LECOM-A/B drivers, only code numbers in the range from 0 to 255 could have been addressed, since
these drivers used only one byte as code number. To achieve the addressing of the wider code-number range with
these drivers, use the code banking. The code-number range 0...255 is displayed as a window over the whole codenumber range. This is controlled via the code C0249 (code bank). Code C0249 can always be accessed via number
249, independent of the currently set code bank.
NOTE
Code banking is only active when the standard addressing is being used. If the selected code numbers are
higher than 255, the code-number range increases correspondingly. Only the corresponding code-number
offset is selected by means of the code bank.
Set the code bank INTEGER(1002/250) =4 in C0249 to address the code number 1002. C1002 is then accessed via
the code number C02.
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Page 14
5.3.3 Addressing via Input Selection
Simple LECOM-A/B drivers, which only use the standard addressing, cannot address subcodes. The input selection
C0248 has been developed to offer the possibility of addressing the subcodes. When using the standard addressing,
the value entered in C0248 is always considered as the subcode. The code C0248 can always be accessed via number
248, independent of the currently set code bank and the sub code used.
Example:
Enter value 1 in C0248 to address the JOG value 1 in subcode 1. Now subelement 1 is always addressed when accessing
C39.
NOTE
After a sub element has been accessed through C0248, C0248 should be reset to 0 to avoid the addressing
of a subelement “by accident” when accessing another code.
5.3.4 Extended Addressing
Another possibility is the direct addressing of parameters by means of expanded addressing.
The abbreviations have the following meanings:
Commissioning
!CH1CH2CH3CH4SC1SC2
! The ASCII character “!” = 21
CH1 to CH4 Code number in hexadecimal code: each character corresponds to a nibble of the code numbers (CH1
is the highest, CH4 is the lowest nibble).
SC1, SC2 Subcode number in hexadecimal code: each character corresponds to a nibble of the code number
word (SC1 is the highest and SC2 the lowest nibble).
The following characters can be displayed in the ASCII code:
A code number range from 0 to 65535 can be addressed by means of these characters. A maximum of 255 subelements
(field elements) can be accessed via one subcode number of each code. Example: 1002 = “!03EA00”
5.4 Parameter Value (V1 to Vn)
Parameter values can be transmitted in four different formats with the following structures:
• ASCII decimal format (VD)
-VK1VK2VK3VK4VK5VK6.NK1NK2NK3NK4
• ASCII hexadecimal format (VH)
HVH1VH2VH3VH4VH5VH6VH7VH8
hex
= 33
shows that the expanded addressing is used
dec
• String format (VS)
SVS1VS2VS3VS4VS5VS6...VS240
• Octet string format for data blocks (VO)
OVO1VO2VO3VO4VO5VO6...VO240
12CMVLC401A
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Commissioning
The abbreviations have the following meanings:
VK1 to VK6 Integers
. Decimal point (if required)
NK1 to NK4 Decimal codes (if required)
“H” (48hex) Character [H], transfer of parameter values in the ASCII hexadecimal format
VH1 to VH8 1 to 8 hexadecimal characters each [0 to 9; A to F]
“S” (53hex) Character [S], transfer of parameter values in the string format
VS1 to VS240 1 to 12 visible ASCII characters each (no control characters)
“O” (4Fhex) Character [0], transfer of parameter values in the octet string format
VO1 to VO240 Data block in hexadecimal code; each character corresponds to a nibble of the data block
Parameter value in the ASCII decimal format (110)
The ASCII decimal format (VD) is most often used. The values consist of the following:
1 leading negative sign (if required)
6 digits before the decimal point (VK1 to VK6)
1 decimal point (if required)
4 digits after the decimal point (NK1 to NK4) (if required)
Values from -214748.3648 to 214748.3647 can be displayed.
NOTE
In the ASCII decimal format (VD), the decimal point must not be transmitted if the value does not have digits
after the decimal point.
Parameter value in ASCII hexadecimal format (VH)
The LECOM-A/B protocol supports the transmission of hexadecimal parameter values with a length of:
• 2 characters (byte value)
• 4 characters (word/integer value)
• 8 characters (double word/long integer)
In the ASCII hexadecimal format, VH1 is the most significant and VH8 the least significant hexadecimal character.
Parameter value in the string format (VS)
By means of the string format (VS) of the protocol it is possible to transmit strings with a maximum of 20 characters in
both directions.
The SMV inverter can only send the string parameters (e. g. C200).
CMVLC401A
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Page 16
Parameter values in the octet string format (VO)
The LECOM-A/B protocol includes the octet string format (VO) with which it is possible to transfer data blocks.
The character sequence corresponds to the filing in the memory (ascending order), i.e. the character transmitted first
is the data block nibble with the lowest address. The data structure of the data block corresponds to the Intel-memory
format with the following definition:
BYTE: 1st high nibble
2nd low nibble
WORD: 1st high BYTE
2nd low BYTE
DWORD: 1st high WORD
2nd low WORD
5.5 Block-Check Character (BCC)
The block-check character (BCC) is used to store the transmitted data and is generated according to DIN 66219 (chapter 3).
Because of the program, the block-check character is generated by an XOR link from the following digits of the SEND
telegram:
Commissioning
• it starts with the character directly after the STX control character
• it ends directly after the ETX control character
- BCC can accept the value 00 ... FF
EOTAD1AD2STXC1C2V1OVnETXBCC
hex
.
BCC
or with expanded addressing:
STX“!”CH1CH2OSC2ETXBCC
BCC
14CMVLC401A
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6 LECOM Message Details
6.1 Telegram Response
The SMV controller must return an acknowledgement to the host. The only exceptions to this are when a broadcast
telegram is received or when the controller address is not correct. These telegrams do not require an acknowledgement.
The SMV controller sends two types of acknowledgements:
• Negative acknowledgement (NAK = 15hex), if:
−a fault (e.g. parity fault) was detected in one or more characters, including the character ENQ
−an invalid command or variable address has been recognized
−the variable value is not within the permissible range
The command RECEIVE is to request parameter values of the SMV controllers. The code numbers of the requested
parameter are transmitted via the RECEIVE telegram using the following structure:
EOTAD1AD2C1C2ENQ
Commissioning
The abbreviations have the following meanings:
EOT (04
) End of the (previous) transmission
hex
AD1, AD2 Logic unit address of the slave to be addressed Slaves
C1, C2 Code number (two ASCII characters) or extended addressing
ENQ (05
) Station request
hex
6.3 Receive Telegram Response
The SMV controller addressed via a RECEIVE telegram generates one of the following responses:
• The controller could decode the request and is now sending the requested parameter value to the host.
STXC1C2V1OVnETXBCC
• The controller could decode the request, however, a check-sum fault (parity fault) occurred during transmission.
STXC1C2?ETXBCC
• The controller could not process the request because the requested code number does not exist.
STXC1C2EOT
The abbreviations have the following meanings:
STX (02
) Start of text
hex
C1, C2 Code number (two ASCII characters) or extended addressing
V1 to Vn Parameter value (n ASCII characters)
ETX (03
BCC Block-check character (00 ... FF
? (3F
EOT (04
) End of text
hex
) ASCII character “?”
hex
) End of the (previous) transmission
hex
hex
)
Structure and meaning of the block-check character (BCC) are described in the corresponding paragraph of the chapter
SEND.
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Page 18
Commissioning
Example 1
The current speed setpoint (code number C46) is to be read with the bus address 01 at the controller. The host sends
the following RECEIVE telegram
EOT0146ENQ
The controller can respond in three different ways:
STX4635
Valid request: The current value of the parameter C46 is 35.4 (Hz) or
STX46?ETXBCC
Invalid request: A check-sum fault (parity fault) occurred during data transmission or
STX46EOT
Invalid request: Parameter C46 does not exist in this controller.
6.4 Send Telegram
The command SEND is used to transmit data from the master to the slave. The master then sends a telegram with the
following structure:
EOTAD1AD2STXC1C2V1OVnETXBCC
The abbreviations have the following meanings:
EOT (04
) End of the (previous) transmission
hex
AD1, AD2 Logic unit address of the slave to be addressed Slaves
STX (02
) Start of text
hex
C1, C2 Code number (two ASCII characters)
V1 to Vn Parameter value (n ASCII characters)
.
4ETXBCC
ETX (03
BCC Block-check character (00 ... FF
) End of text
hex
hex
)
In the text section of the telegram, which is embedded between the control characters STX and ETX, the code number
(C1. C2) and the corresponding parameter value (V1 to Vn) are transmitted to the slave.
Example for a SEND telegram:
The maximum speed (code number C1103) is to be set to the value 95.2 Hz via the bus address 34 at the controller.
The host must send the following SEND telegram:
EOT34STX0195.2ETXBCC
The controller can respond with one of two acknowledgements:
ACK
The command was processed correctly. The current value of the parameter C1103 is 95.2 Hz or
NAK
The request could not be processed correctly. The value of parameter C1103 has not been changed.
16CMVLC401A
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6.4 Broadcast / Multicast
In a bus network, the command BROADCAST is to address all devices or a group of devices (multicast) at the same
time. The structure of the BROADCAST telegram is similar to the structure of the SEND telegram. The only exception is
that it does not return an acknowledgement.
The devices can be selected via their controller addresses. The controller addresses listed in Table 8 are reserved for
a BROADCAST telegram.
Commissioning
Table 8: Controller Addresses for Broadcast Telegram
Controller address
(reserved)
00all“0”“0”
1011 to 19“1”“0”
2021 to 29“2”“0”
3031 to 39“3”“0”
4041 to 49“4”“0”
5051 to 59“5”“0”
6061 to 69“6”“0”
7071 to 79“7”“0”
8081 to 89“8”“0”
9091 to 99“9”“0”
Controller address
of groups
ASCII character
AD1AD2
Example for a BROADCAST telegram:
All controllers are to be stopped when setting controller enable (code number C40 = 0).
The host sends the following BROADCAST telegram:
EOT00STX400ETXBCC
The controllers do not return an acknowledgement.
Monitoring of the slave response:
The master monitors the selected slave. The slave must return a response within a defined time. Under the following
circumstances the slave does not return a response to the master (time out):
• The controller address could not be recognized
• The transmission path is faulty
• A BROADCAST telegram had been sent.
• The hardware does not work properly
If the master does not receive a response within a defined period of time, the transmission is tried again. The number
of repetitions is limited.
The monitoring time in the master should be approx. twice as long as the maximum response time.
Transmission faults
After a transmission fault, the master can read C0068 and evaluate the communication error in bit 4... 7.
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Page 20
7 Commissioning
7.1 Drive Monitoring
The network can always read drive parameters as long as the LECOM communications are enabled (i.e. P400 = 7) and
configured properly (see P410-411). For monitor only operation, set P420 = 0.
7.2 Drive Programming and Control
Network Control must be enabled for the network to program drive parameters or take control of a drive. This is done by:
1. Setting P121…P124 equal to 09 (NET ENABLE) and asserting the corresponding TB-13x terminal
2. Setting P100 to 00, 01, 03, 04 or 06. Network control cannot be enabled when P100 is set to 02 (REMOTE KEYPAD
ONLY) or 05 (TERMINAL STRIP/REMOTE KEYPAD).
3. Setting P420 to 01, 02 or 03.
7.3 Network Watchdog Timer
7.3.1 Watchdog Timer
The SMV is equipped with a Serial Link “Watchdog Timer”. If the Watchdog Timer is enabled, the Master MUST
PERIODICALLY COMMUNICATE with the drive or the timer will timeout.
Commissioning
Watchdog timer setup is performed by using parameters P425 and P426 (LECOM codes C1425 and C1426).
7.3.2 Watchdog Time-out Period (P425)
The maximum amount of time that should be allowed to pass between network messages to a specific drive will vary from
one network to the next. Therefore, we have made the watchdog time-out period user settable via Drive Programming
Parameter P425 (refer to section 4.2 for details).
NOTE
To prevent erroneous timeout trips, make sure the time set in parameter P425 (C1425) is appropriate for
particular network - default value of 50ms might be to restrictive!
7.3.3 Watchdog Time-out Action (P426)
The appropriate action to be taken when a watchdog time-out occurs will also vary from one application to the next.
Therefore, we have provided four user selectable time-out actions which can be set via Drive Programming Parameter
P426.
The selections are:
0) No action Watchdog timer is disabled.
1) Controller inhibit If the drive doesn’t receive valid communication for period longer than the time specified in
parameter P425 (C1425), it will coast to stop and drive display will show inhibit state ‘Stop’.
2) Quick Stop If the drive doesn’t receive valid communication for period longer than the time specified in
parameter P425 (C1425), it will ramp to stop and drive display will show stop state ‘Stop’.
3) Trip fault ‘F.nF1’ If the drive doesn’t receive valid communication for period longer than the time specified in
parameter P425 (C1425), it trips with fault ‘F.nF1’.
WARNING!
Disabling the watchdog timer may cause injury to personnel and/or damage to equipment. The watchdog
timer should only be disabled during configuration or diagnosis to prevent nuisance timeout trips.
18CMVLC401A
Page 21
8 Drive Registers
8.1 Configuration and Control Registers
Registers #1 through #1099 are reserved for registers that are only available over the network and cannot be accessed
via the drive’s local keypad.
Commissioning
Table 9: Configuration & Control Registers
Code
Number
C0040Controller Inhibit00 Controller inhibited
C0043Fault Reset00 No Action
C0046Frequency Setpoint0.0 … 500.0 HzRead only
C0050Actual Output
C0068Operating Status Bit
Parameter NameDefault Range of AdjustmentImportant
The controller can also be enabled
Frequency
Word
1 Controller enabled
1 Reset Fault
0.0 … 500.0 HzRead only
BitDescriptionRead only
0-3The 10th digit of the LECOM fault number is
displayed. Example:
TRIP OH = 5 (LECOM no. = 50)
4-7Last communication error
0 = No fault
1 = Check sum error
2 = Protocol frame error
3 = Reserved
4 = Invalid code number
5 = Invalid variable
6 = No access permission
7 = Telegram processing interrupted by a new
telegram
15 = General fault
8Control via LECOM enabled
9Actual frequency above threshold C17
10Direction of rotation
0 = CW
1 = CCW
11Power stage transistors energized
12Quick STOP active
13Current Limit
14Setpoint frequency reached
15Fault occurred
LECOM Format = VH
with the control word C0135
The fault can also be reset with
the control word C0135
CMVLC401A
19
Page 22
Commissioning
Code
Number
C0135Controller Control
C0140Frequency Setpoint
Parameter NameDefault Range of AdjustmentImportant
Edge from 0 to 1 causes TRIP reset
12-13 Reserved
14DC Brake (DC injection brake)
0 = DCB not active
1 = DCB active
15Reserved
LECOM Format = VH
0.0 Hz 0.0 … 500.0 Hz
20CMVLC401A
Page 23
Commissioning
Code
Number
C0150Controller Status
Parameter NameDefault Range of AdjustmentImportant
Word
BitDescriptionRead only
0Reserved
1Power stage transistors energized
2Current Limit reached
3Reserved
4Setpoint Frequency reached
5Actual frequency above threshold C17
6Actual frequency == 0Hz
7Controller inhibit
0 = No controller inhibit
1 = Controller inhibit
8 - 11 Controller status
0 = No error
1 = Error
12Overtemperature fault
13DC Bus overvoltage
14Direction of rotation
0 = CW
1 = CCW
15Read for operation
0 = fault (not ready for operation)
1 = no fault (ready for operation)
LECOM Format = VH
CMVLC401A
21
Page 24
Commissioning
Code
Number
C0200Software
C0201Software
C1050Network Controlled
C1055Network Controlled
C1060Keypad Speed
C1061Network Speed
C1070Keypad PID
C1071Network PID
C1072Actual PID setpoint0.0-99.9 … 3100.0Read only
C1073PID Setpoint
C1074PID Feedback0.0-99.9 … 3100.0Read only
C1080Keypad Torque
C1081Network Torque
C1099Parameter VersionRefer to section 8.1.3
Parameter NameDefault Range of AdjustmentImportant
Identification
Generation Date
Digital Output
(TB14) + Relay
Analog Output
Command
Command
Setpoint Command
Setpoint Command
Command
Command
Command
Software identification string:
example “33SSSMD-M_14000”
LECOM Format = VS
Software generation date:
example “2008-10-18”
LECOM Format = VS
0 = de-energized
1 = energized
bit 9: TB-14 state
bit 10: Relay state
other bits are not used
0.0%0.0 … 100.0Refer to section 8.1.2
20.0 Hz P102 … P103
0.0 Hz P102 … P103
0.0-99.9 … 3100.0Read only
0.0-99.9 … 3100.0Read-only
0.0-99.9 … 3100.0Read only
100%0.0 … 400.0
0%0.0 … 400.0
Read only
Read only
Refer to section 8.1.1
8.1.1 C1050 (Network Controlled Digital Output)
To control the state of the relay or digital output (TB14), Drive Programming Parameter P140 and/or P142 must be set
to 25 (Network Controlled).
8.1.2 C1055 (Network Controlled Analog Output)
To control the state of the analog output (TB30), Drive Programming Parameter P150 must be set to 09 (Network
Controlled).
8.1.3 C1099 (Parameter Version)
The Parameter Version identifies the parameter set for the current version of software. If the Parameter version is
different between two drives, it could indicate that a register has been added or deleted, a register’s min/max limits
have changed, a register’s function has been changed, or a register’s default value has been changed.
22CMVLC401A
Page 25
9 Programming Parameters
There is an offset of 1000 between the Drive Programming Parameter numbers and the code numbers used in the
LECOM messages. For example, if you want to read Drive Programming Parameter P103 (Maximum Frequency) over
the LECOM network, you would read code number 1103.
Output (Transistor) Fault
Ground Fault
High Drive Temperature
Flying Start Fault
High DC Bus Voltage
Low DC Bus Voltage
Motor Thermal Overload
OEM Fault
Illegal Setup
Dynamic Brake Over Temperature
Single Phase Fault
External Fault
Control Fault
Start Error (Power loss)
Incompatibility Fault
Internal Fault 1 (EPM)
Internal Fault 2
Internal Fault 3
Internal Fault 5 (stack overflow)
Internal Fault 5 (stack underflow)
Internal Fault 6
Internal Fault 7
Internal Fault 8
Internal Fault 9
Personality Fault
Internal Fault (AD Offset)
Internal Fault (Remote Keypad Lost)
Assertion Level switched during Operation Fault
Internal Fault 4 (FGD Missing)
Internal Fault 0 (PW Missing)
Follower Lost
ISO Comm Fault
Internal Fault (Module Communication (SPI) Timeout)
Internal Fault (FNR: Invalid Message Received)
Network Time-out
CMVLC401A
23
Page 26
9.2 Drive ID (P502)
This register returns an index value that is associated with the voltage and power rating of the drive. Table 10 lists the
drive configuration by Index number.
Commissioning
Table 10: Drive ID
IndexInput VoltagePower Rating
8240 VAC, Single-Phase0.33 HP (0.25 kW)
12
132 HP (1.5 kW)
143 HP (2.2 kW)
21
231 HP (0.75 kW)
241.5 HP (1.1 kW)
252 HP (1.5 kW)
263 HP (2.2 kW)
285 HP (4 kW)
297.5 HP (5.5 kW)
3010 HP (7.5 kW)
3115 HP (11 kW)
3220 HP (15 kW)
42
441 HP (0.75 kW)
451.5 HP (1.1 kW)
462 HP (1.5 kW)
473 HP (2.2 kW)
495 HP (4 kW)
507.5 HP (5.5 kW)
5110 HP (7.5 kW)
5215 HP (11 kW)
5320 HP (15 kW)
5425 HP (18.5 kW)
5530 HP (22 kW)
69
712 HP (1.5 kW)
723 HP (2.2 kW)
745 HP (4 kW)
757.5 HP (5.5 kW)
7610 HP (7.5 kW)
7715 HP (11 kW)
7820 HP (15 kW)
7925 HP (18.5 kW)
8030 HP (22 kW)
91
920.5 HP (0.37 kW)
941 HP (0.75 kW)
240 VAC
Single or Three-Phase
240 VAC
Three-Phase
480 VAC
Three-Phase
600 VAC
Three-Phase
120 or 240 VAC
Single-Phase
1.5 HP (1.1 kW)
0.5 HP (0.37 kW)
0.5 HP (0.37 kW)
1 HP (0.75 kW)
0.33 HP (0.25 kW)
All unused Index values are reserved for future use
24CMVLC401A
Page 27
9.3 Terminal and Protection Status (P530)
When a read command is issued over the LECOM network to Programming Parameter P530 (code number 1530), the
Terminal and Protection Status data returned can be interpreted as follows:
Commissioning
0 TB-13D Input Status
1 reserved9 TB-14 Output Status
2 Protection Status10 Relay Output Status
3 Fast Current Limit Status11 Charge Relay State
4 Input TB-1 Status12 Assertion Level Switch State
Data Low Byte
5 reserved13 reserved
6 TB-13A Input Status14 reserved
7 TB-13B Input Status15 reserved
9.4 Keypad Status (P531)
When a read command is issued over the LECOM network to Programming Parameter P531 (code number 1531), the
Keypad Status data returned can be interpreted as follows:
0UP Push-button State
1DOWN Push-button State9DOWN Push-button State
2MODE Push-button State10MODE Push-button State
3FWD/REV Push-button State11FWD/REV Push-button State
8 TB-13C Input Status
Data High Byte
8UP Push-button State
4
Data Low Byte
5
LOCAL Drive Keypad
6
STOP Push-button State12
STOP
START Push-button State13
RUN
CTRL Push-button14
CTRL
Data High Byte
REMOTE Keypad
CTRL
7Unused15Unused
STOP Push-button State
STOP
START Push-button State
RUN
CTRL Push-button
CMVLC401A
25
Page 28
Troubleshooting and Fault Elimination
10 Troubleshooting and Fault Elimination
10.1 Faults
Table 11 lists the faults common to the LECOM communications module.
Fault Code FaultCauseRemedy
Module to Drive
f
communication time out
F1
10.2 Troubleshooting
Table 12 lists some common LECOM communications problems and possible corrective action.
SymptomPossible CauseRemedy
No communication
from the drive
Network Time-out FaultDrive under NETWORK control
Module is not initialized properly• Verify the module connection
Incorrect LECOM settings• Use P403 to reset LECOM parameters.
Improper wiring• Check wiring between the LECOM Network and
Table 11: Faults
Connection between drive and
module is not made.
and network communications
have been lost.
Table 12: Troubleshooting
• Check P400 and P402
• Verify P410 and P411
communication module.
• Ensure that terminal block is properly seated.
• Check connection between module and drive.
Check cable and connection
between module and drive
See parameters P425, P426
LECOM write
commands are
ignored or return
exceptions.
Drive stops without
obvious reason
“Network Enabled” terminal is either
open or not configured.
Network Control Level set to monitor only
(P420 = 0)
LECOM message monitoring time-out
occurred. The timeout reaction is set to
Quick stop or Inhibit.
Configure one of the input terminals (P121 ... P124)
to “Network Enabled” function (selection 9) and close
the corresponding contact.
Set P420 = 1, 2, 3 or 4
Modify the setting of time-out time (P425) or the
reaction to the time-out (P426).
26CMVLC401A
Page 29
Lenze AC Tech Corporation
630 Douglas Street • Uxbridge, MA 01569 • USA
Sales: (508) 278-9100 • Service (508) 217-9100
www.lenzeamericas.com
Document
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