AC Tech Lenze RS-485 Manuel utilisateur
CMVMB401B
SMVector
RS-485 Modbus Communication Module
Communications Interface Reference Guide
This documentation applies to the RS-485 / Modbus 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 carefully 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 Modbus Communication Module
software version 1.01. 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 1.01, then writing to any drive register over
the Modbus® 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.
© 2007 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. We do not accept any responsibility nor liability for damages that may
occur. Any necessary corrections will be implemented in subsequent editions.
About these instructions
1
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Contents
1 Safety information ................................................................2
2 Introduction ..........................................................................4
2.1 Overview ...................................................................................................4
2.2 SMVector Modbus RTU Implementation Specifications ...........................4
3 Installation ............................................................................5
3.1 Installing the Module into the Terminal Cover ..........................................5
3.2 RS-485 / Modbus RTU terminal block ......................................................5
3.3 Installing the Terminal Cover ....................................................................6
4 Extended Parameters for RS-485/Modbus RTU ................7
4.1 Parameter Menu .......................................................................................7
5 Modbus Protocol Details .....................................................9
5.1 Data Transmission ....................................................................................9
5.2 Register Numbering ..................................................................................9
5.3 Modbus Function Codes Supported ........................................................9
6 Modbus Message Details ...................................................10
6.1 Register Reading ....................................................................................11
6.2 Register Writing ......................................................................................12
6.3 No Response Conditions ........................................................................13
6.4 Exception Responses .............................................................................13
7 Commissioning ..................................................................14
7.1 Drive Monitoring ......................................................................................14
7.2 Drive Programming and Control .............................................................14
7.3 Unlocking & Locking of Drive Controls and Parameters ........................14
7.4 Network Watchdog Timer .......................................................................15
7.5 Watchdog Timer Controls .......................................................................15
8 Typical Network Applications ...........................................16
8.1 Controlling the Drive (e.g. starting the drive) ..........................................16
8.2 Changing Drive Parameters ...................................................................16
8.3 Controlling the Drive Frequency, PID or Torque Setpoint ......................16
9 Drive Registers ...................................................................17
9.1 Data Internal vs. Display Representation ...............................................17
9.2 Configuration and Control Registers ......................................................17
10 Programming Parameters .................................................25
10.1 Negative Number Transmission .............................................................25
10.2 Terminal and Protection Status (P530) ...................................................25
10.3 Keypad Status (P531) .............................................................................26
11 Troubleshooting and Fault Elimination ............................27
11.1 Faults ......................................................................................................27
11.2 Troubleshooting ......................................................................................27
2ENGLISH
Safety information
1 Safety information
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 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.
Application as directed
Drive controllers are components which are 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
the 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 of operation as directed) is only allowed when there is compliance with
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 this case, special measures can be necessary.
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!
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 according to the appropriate regulations (e.g. cable cross-
sections, fuses, PE connection). Additional information can be obtained from the documentation.
The 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.
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.
3
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Safety information
DANGER!
• After the controller has been disconnected from the supply voltage, live components
and power connection must not be touched immediately, since capacitors could be
charged. Please observe the corresponding notes on the controller.
• Do not continuously cycle input power to the controller more than once every three
minutes.
• Please close all protective covers and doors during operation.
WARNING!
Network control permits automatic operation 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.
Pictographs used in these instructions
Pictograph Signal word Meaning Consequences 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! Impending or possible danger
for persons Death or injury
STOP! Possible damage to equipment Damage to drive system or its
surroundings
Note Useful tip: If observed, it will
make using the drive easier
4ENGLISH
Introduction
2 Introduction
This reference guide assumes that the reader has a working knowledge of the Modbus
RTU Protocol and familiarity with the programming and operation of motion control
equipment. This guide is intended as a reference only.
2.1 Overview
Modbus is an internationally accepted asynchronous serial protocol designed for
commercial and industrial automation applications. The Modbus RTU architecture is
based upon a PLC to device communication structure and, as such is Master-Slave
in orientation. The SMV drive, in this case, always acts as the slave in this network,
responding to commands and requests from the Master.
While the Modbus RTU protocol does not specify the physical layer, the ESVZAR0
module uses the RS-485 physical interface which is quite common and well suited for the
industrial environment. The ESVZAR0 module provides both galvanic and optical isolation
of this physical interface.
2.2 SMVector Modbus RTU Implementation Specifications
Typical communications between master and slave would be:
• Write commands from Master
- Run command
- Frequency Reference
- Modification of Drive operating parameters
• Requests from Master
- Reporting of drive status
- Fault status (and fault history)
The SMVector drive most nearly conforms to the Modicon® Micro 84 in capabilities. This
may be of importance when configuring networks for DDE Servers.
The following table identifies the Modbus 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.
Description Type Range
Baud Rate Selectable P411 (2400, 4800, 9600, 19200, 38400, 57600, or 115200 bps)
Data Bits Fixed 8
Parity / Stop Bits Selectable P412 (None/1, None/2, Even/1, Odd/1)
Network Address Selectable P410 (1 - 247)
5
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Installation
3 Installation
3.1 Installing the Module into the Terminal Cover
7mm
<_ 2.8 mm²
(12-22 AWG)
0.5 Nm/ 4.5 lb-in
12345
3.2 RS-485 / Modbus RTU terminal block
Terminal Description Important
1 Earth ground / shield
For reliable communication make sure terminal
is connected to the Modbus network
GND/common. If only two wires are used (TXA
and TXB) in the network, connect Terminal 1 to
chassis/earth ground.
2 TXA
If controller is located at either end of the network,
a terminating resistor (120ohm typical) should be
connected across TXA and TXB
3
4 TXB
5
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)
6ENGLISH
Installation
3.3 Installing the Terminal Cover
7
ENGLISH
Commissioning
4 Extended Parameters for RS-485/Modbus RTU
In addition to the drive parameters that are detailed in the Installation and Operation
manual, the installation of the RS485/Modbus RTU module will give access to the 400
series parameters that are exclusive to this communication module.
4.1 Parameter Menu
Code Possible Settings IMPORTANT
No. Name Default Selection
RS485/Modbus: Modbus Module Specific parameters
p400 Network Protocol 0 Not Active
1 Remote Keypad
2 Modbus RTU
P401 Module Revision 01.0.0 Display reads 01.x.x where:
01 = RS485/Modbus Module
x.x = Module Revision
Read only
P402 Module Status 0 0 Not Initialized
Read only
Online state “3” indicates that the
communications between the drive and
module are working properly.
1 Initialization: Module to EPM
2 Initialization: EPM to Module
3 Online
4 Failed Initialization Error
5 Time-out Error
6 Initialization Failed Module type mismatch (P401)
7 Initialization Error Protocol Selection mismatch (P400)
P403 Module Reset 0 0 No Action
1 Reset Module parameter values
to default.
Returns module parameters 401…499 to
the default values shown in this manual.
P404 Module Time-out
Action
3 0 Ignore • Action to be taken in the event of a
Module/Drive Time-out.
• Time-out is fixed at 200ms.
• Selection 1 (STOP) is by the method
selected in P111.
1 STOP (see P111)
2 Quick Stop
3 Fault (f.ntf)
P405 Network Fault 0 0 No Fault
Read only, see P425 and P426
1 Network Time-out, F.nF1
P406 Proprietary Manufacturer specific Read only
8ENGLISH
Commissioning
Code Possible Settings IMPORTANT
No. Name Default Selection
RS485/Modbus: System bus parameters
P410 Network address 1 1 247 The Drive does not support the Modbus
“broadcast” function.
P411 Network
Baud Rate
2 0 2400 bps
1 4800 bps
2 9600 bps
3 19200 bps
4 38400 bps
5 57600 bps
6 115200 bps
P412 Network Data
Format
0 0 8 Data bits, No Parity, 2 stop bits
1 8 Data bits, No Parity, 1 stop bit
2 8 Data bits, Even Parity, 1 stop bit
3 8 Data bits, Odd Parity, 1 stop bit
P425 Network Message
time-out
10.0 0.0 {s} 300.0
P426 Network Message
time-out action
4 0 Not active
1 STOP (see P111)
2 Quick stop
3 Inhibit
4 Trip fault, F.nF1
P427 Valid Network
messages
Received
0 0 {messages} 9999 • Read-only
• When number of messages exceed
9999, counter resets to 0 and continues.
RS485/Modbus: Module Specific parameters
P494 Communication
Module software
version
• Read only
• Format: x.yz
P495 Internal Code • Read only
• Alternating Display: xxx-; -yy
P498 Missed Messages
Drive to Module
• Read only
P499 Missed Messages
Module to Drive
• Read only
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