Lenze RS-485 User Manual
SMVector RS-485 LECOM Communication Module
Communications Interface Reference Guide
About these instructions
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.
© 2008 Lenze AC Tech Corporation
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.
Contents
1 Safety Information .....................................................................................................................................................2
1.1 General ........................................................................................................................................................................ 2
1.2 Application ................................................................................................................................................................... 2
1.3 Installation .................................................................................................................................................................... 2
1.4 Electrical Connection ....................................................................................................................................................2
1.5 Operation .....................................................................................................................................................................3
2 Introduction ...............................................................................................................................................................4
2.1 Module Specifications .................................................................................................................................................. 4
2.2 Module Identification Label ........................................................................................................................................... 4
3 Installation .................................................................................................................................................................5
3.1 Mechanical Installation .................................................................................................................................................5
3.2 RS-485 Terminal Block................................................................................................................................................. 6
3.3 Electrical Installation..................................................................................................................................................... 6
3.3.1 Cable Types ................................................................................................................................................. 6
3.3.2 Network Limitations ..................................................................................................................................... 6
3.3.3 Connections and Shielding ........................................................................................................................... 6
3.3.4 Network Termination ...................................................................................................................................7
4 Parameters for use with RS-485/LECOM ....................................................................................................................8
4.1 Drive Communication Parameters................................................................................................................................. 8
4.2 RS485 LECOM-Specific Parameters ............................................................................................................................. 9
5 LECOM Protocol Details ...........................................................................................................................................10
5.1 LECOM - A/B Protocol Description ..............................................................................................................................10
5.2 Controller address (AD1, AD2) ....................................................................................................................................10
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
5.3.4 Extended Addressing ................................................................................................................................. 12
5.4 Parameter Value (V1 to Vn) ......................................................................................................................................... 12
5.5 Block-Check Character (BCC) ..................................................................................................................................... 14
6 LECOM Message Details ..........................................................................................................................................15
6.1 Telegram Response .................................................................................................................................................... 15
6.2 Receive Telegram ....................................................................................................................................................... 15
6.3 Receive Telegram Response ....................................................................................................................................... 15
6.4 Send Telegram ........................................................................................................................................................... 16
6.4 Broadcast / Multicast .................................................................................................................................................. 17
7 Commissioning ........................................................................................................................................................18
7.1 Drive Monitoring ......................................................................................................................................................... 18
7.2 Drive Programming and Control .................................................................................................................................. 18
7.3 Network Watchdog Timer ........................................................................................................................................... 18
7.3.1 Watchdog Timer ........................................................................................................................................18
7.3.2 Watchdog Time-out Period (P425).............................................................................................................. 18
7.3.3 Watchdog Time-out Action (P426) .............................................................................................................. 18
8 Drive Registers ........................................................................................................................................................19
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
8.1.3 C1099 (Parameter Version) ........................................................................................................................ 22
9 Programming Parameters ........................................................................................................................................23
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
10.1 Faults ......................................................................................................................................................................... 26
10.2 Troubleshooting.......................................................................................................................................................... 26
CMVLC401A
1
1 Safety Information
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 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.
2 CMVLC401A
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
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!
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
CMVLC401A
3
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:
• Write commands from Master
− Run command
− Frequency Reference
− Modification of Drive operating parameters
Introduction
Table 2: LECOM Serial Communication
Description Type Range
Network Address Selectable P410 (1 - 99)
Baud Rate Selectable P411 (9600, 4800, 2400, 1200, 19200 bps)
Data Bits Fixed 7
Parity / Stop Bits Fixed Even/1
• Requests from Master
− Reporting of drive status
− Fault status (and fault history)
2.2 Module Identification Label
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
4 CMVLC401A
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) Models NEMA 4X (IP65) Models
Figure 2: Installing the RS-485 Communications Module
NEMA 1 (IP31) Models NEMA 4X (IP65) Models
Figure 3: Re-installing the Terminal Cover
CMVLC401A
5
3.2 RS-485 Terminal Block
For a LECOM network, wire the RS-485 connector as detailed in Table 3.
Terminal Description Important RS-485 Connector
1 Earth ground / shield For reliable communication make sure terminal is
2 TXA If controller is located at either end of the network,
3 No connection
4 TXB
5 No 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
6 CMVLC401A
3 4
5
20mm
max
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
3 4
5
Connect to
drive earth
(PE)
120Ω
1/4W
Figure 5: Network Termination Resistor
20mm
max
CMVLC401A
7
Loading...