Magnetic incremental linear encoder for large measuring distances (24 pages)
Summary of Contents for ELGO Electronic LIMAX02 Series
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799000350 / Rev. 9 / 2019-04-02 Translation of the original operating manual Operating Manual SERIE LIMAX02 Magnetic Absolute Shaft Information System for Elevators Robust measuring principle for usage in rough environments Insensitive against dirt, smoke and humidity Simple and flexible installation ...
Contents 1 Contents Contents ..................... 3 General, Safety, Transport and Storage ............ 4 Information Operating Manual ................... 4 Explanation of Symbols ...................... 4 Statement of Warranties ..................... 5 Demounting and Disposal ....................5 General Causes of Risk ..................... 5 Product Features ..................7 Functional principle ......................
General, Safety, Transport and Storage 2 General, Safety, Transport and Storage Information Operating Manual This manual contains important information regarding the handling of the device. For your own safety and operational safety, please ob- serve all safety warnings and instructions. Precondition for safe operation is the compliance with the specified safety and handling instructions.
General, Safety, Transport and Storage Statement of Warranties The producer guarantees the functional capability of the process engineering and the selected parameters. Demounting and Disposal Unless acceptance and disposal of returned goods are agreed upon, demount the device considering the safety instructions of this manual and dispose it with respect to the environment.
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General, Safety, Transport and Storage 2.5.2 Conventional Use The ELGO-device is only conceived for the conventional use described in this manual. The LIMAX02 - ELGO- length measuring system only serves to measure lengths. CAUTION! Danger through non-conventional use! Non-intended use and non-observance of this operating manual can lead to dangerous situations. Therefore: ...
Product Features 3 Product Features LIMAX02 is an absolute measuring shaft information system that is used for positioning of elevator cars. It con- sists of only two components: sensor and magnetic band. A big advantage of the system is the simple and flexible installation. The assembly of the system components is very simple and can be performed by specialists in less than an hour.
Technical Data 4 Technical Data Identification The type label serves for the identification of the unit. It is located on the housing of the sensor and gives the exact type designation (=order reference, see type designation) with the corresponding part number. Furthermore, the type label contains a unique, traceable device number.
Technical Data Dimensions Magnetic Tape Scale 5:1 Figure 4: Dimensions Magnetic Tape Technical Data Sensor LIMAX02 (Standard version) Mechanical Data Measuring principle absolute Repeat accuracy +/- 1 Increment +/- (1000 + 50 x L[m]) System accuracy in µm at 20°C L = measuring length in meter Distance from sensor to magnetic 4 mm...
Technical Data Technical Data Magnetic Tape The magnetic tape consists of two components: The actual magnetic tape which carries the position information A mechanical stainless steel back iron TEMPLATE Magnetic Tape AB20-80-10-1-R-D-15-BK80 Coding absolute, single track system Pole pitch 8 mm -20 …...
Installation and First Start-Up 5 Installation and First Start-Up CAUTION Please read the operating manual carefully before using the device! Strictly observe the Instal- lation instructions! In case of damage caused by failure to observe this operating manual, the warranty expires. ELGO is not liable for any secondary damage and for damage to persons, property or assets.
Installation and First Start-Up Description installation of the Sensor 5.2.1 Installation Principe Upper tape fixation Upper tape fixation Sensor Sensor Magnetic tape Magnetic tape Guide rail Guide rail Sway guard Spring Tension weight Figure 5: Installation with tension weight Figure 6: Installation with dowel and spring LIMAX02 can be installed at any position in the shaft, depending on spatial conditions and layout of the particu- lar elevator installation.
Installation and First Start-Up 5.2.2 Installation of the Sensor The sensor is fixated on the cabin or on the car frame. The mounting position is basically determined by the condition. The integrated mounting notches on the housing of the sensor head allow for a very simple and self- explanatory installation from three sides.
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Installation and First Start-Up 5.3.2 Installation Concept 5.3.2.1 Basic Principle for the Mounting NOTE! The magnetic tape itself is not designed to withstand excessive mechanical wear. It is there- fore important to ensure that the system is installed such that the mechanical contact between tape and sensor head is mainly between the steel tape and the polymer sensor guide.
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Installation and First Start-Up 5.3.3 Installation Procedure Attach the top end of the tape in the shaft head. Ideally use an ELGO Mounting Kit. Check for correct orientation of the tape. The arrows on the magnetic side must point in upward direction. Shaft head Shaft pit Figure 9: Correct orientation of the magnetic tape...
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Installation and First Start-Up Adjust now the distance between sensor and tape. Up to a travel height of 50 m we recommend an offset of at least 15 mm. This will ensure steady contact between steel side of the band and the polymer guide of the sensor.
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Installation and First Start-Up IMPORTANT: Installation check! Values for tape tension and offset between tape and sensor are guidelines based on experience. But in any case, a proper check after installation is mandatory. It must absolutely be avoided that the magnetic side constantly grinds on the sensor body during operation.
Connections and Interfaces 6 Connections and Interfaces LED’s (Operating status and notices) The LED’s located on the front serve for monitoring of operating conditions. With startup it has to be ensured that the yellow LED illuminates as this monitors the internal supply voltage. Figure 14: LED signals on the upper side of the sensor YELLOW Supply voltage...
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Connections and Interfaces Speed ABS-Position Figure 15: Protocol CAN standard 6.2.2 CANopen DS 406 and DS417 For LIMAX02 the CANopen Interfaces DS406 (encoder profile) und DS417 (lift profile) are available. These interfaces are configured by default as follows: Table 2: Configuration of CANopen DS406 CANopen DS406 Bit rate 250 kbit/s...
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Connections and Interfaces 6.2.3 Pin Assignment CAN Table 4: Pin Assignment CAN 9-pin D-SUB connector Open cable exit PIN-No. Function Color Function Pin 6 0 V / GND White 0 V / GND Pin 9 + 24 VDC Brown + 24 VDC Pin 2 CAN L Green...
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Connections and Interfaces 3. If the setting should be maintained in the case of a power failure, the changes have to be saved, as described in section ( 6.2.5). 6.2.4.4 Setting the Sending Cycle for the Position Data The position data are sent cyclically by the device, therefore the device has to be in the Operational Mode ( 6.2.6.1).
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Connections and Interfaces CANopen Master device Saving all parameters DLC: XXX = 600h + node-ID Example: 604h for the device node-ID 4 Acknowledgment of the CANopen device DLC: XXX = 580h + node-ID Example: 584h for the device with node-ID 4 Figure 20: Saving the parameters 6.2.6 Changing the Operating Modes...
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Connections and Interfaces 6.2.6.3 Changing the device into the Stopped Mode Bus sharing units in the Stopped Mode are passive participants. In this mode all the communication is turned off, except the monitoring activity (e.g. heartbeat). The following CAN-message causes the change of all CANopen participants into the Stopped Mode: CANopen Master device...
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Connections and Interfaces ATTENTION! During the saving procedure the device is not accessible over a period of a few milliseconds. 6.2.8 Setting the Baud Rate 1. Change the device into the Stopped mode ( 6.2.6.3) 2. Change the device into the LSS Configuration Mode ( 6.2.7.1) 3.
Connections and Interfaces SSI Interface 6.3.1 Function Principle If the clock is not interrupted for the time Tm-T/2 (output of further 25 periods), the shift register clocks once again the same data value (error recognition in the evaluation). Some encoders contain a Power Failure Bit (PFB).
Connections and Interfaces RS232 / RS422 / RS485* *) Attention: RS485 only unidirectional If the measuring system is equipped with an RS232, RS485 or RS422 interface, the data communication has the following format: 19200 baud (other baud rates on request) 1 Start bit 8 data bits 1 stop bit...
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Connections and Interfaces 6.4.3 Command Descriptions Important: Before you send a new message to the LIMAX02 wait for the answer first. After allocating a new address the LIMAX02 answers in max. 0.5 seconds. In other cases it even in a few milliseconds. After this time it is not expected to get an answer (transmission error).
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Connections and Interfaces 6.4.3.5 Error Messages If one of the described operations failed for some reason LIMAX02 gives an error message with a respective error-code. Answer from LIMAX02 = Error-Code (04h – 0Ah) error – codes are listed at the next page. Table 8: Error-codes of an addressable LIMAX02 Code Meaning...
Connections and Interfaces 6.4.3.6 Connection to a RS422 Master Figure 31: Connection to a RS422 Master Option Unguided LIMAX02 "unguided" is an absolute measuring system, which is used for positioning in the most diverse areas horizontally and vertically. It consists of only two components: magnetic tape and the sensor. Figure 32: LIMAX02 Option unguided - 30 -...
Connections and Interfaces Option PROFIBUS Interface 6.6.1 LED’s (Operation Status and Messages) The LED’s located on the top side, a green LED (Bus Run) and a red LED (Bus Fail), serve for monitoring of op- erating status. For setting the address are two rotary coding switches located on the top next to the LED’s BUS RUN GREEN ...
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Connections and Interfaces 6.6.2.3 PROFIBUS Interface The sensor option profibus is fitted as standard with a profibus interface according to IEC61158 / IEC61784. The following parameters are specified. Table 10: Parameter PROFIBUS Interface PROFIBUS Interfac Transmission RS485 two-wire line Wire lenght 1200 m at 9,6 kBaud 200 m at 1,5 Mbaud 100 m at 12 MBaud...
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Connections and Interfaces Profibus OUT Profibus IN Power Supply Figure 34: Pin Assignment PROFIBUS - 33 -...
Disturbances, Maintenance, Cleaning 7 Disturbances, Maintenance, Cleaning This chapter describes possible causes for disturbances and measures for their removal. In case of increased disturbances, please follow the measures for fault clearance in chapter 7.1. In case of disturbances that cannot be eliminated by following the advice and the fault clearance measures given here, please contact the manufacturer (see second page).
Disturbances, Maintenance, Cleaning Maintenance The LIMAX02 shaft information system requires little maintenance. On the occasion of regular elevator inspection and maintenance do the following: Optical inspection of proper alignment between sensor and band. Worn off material indicates possible alignment flaws. Check ...
Type Designation 8 Type Designation Type Designation LIMAX2 1000 CO0T Series / Type: LIMAX2 = LIMAX02 (1-Kanal) SN-number: = standard version = special version Signal cable length: = 3,0 m (Standard) = 5,0 m Other on request Resolution: 62N5 = 62,5 µm = 0,0625 mm 0125 = 125 µm = 0,125 mm 0250...
Type Designation Control specific Sensors Table 14: Control specific Sensors Product key Control type LIMAX2-00-030-0500-CO1TG-D9M Böhnke bp306/bp308 (CANopen CiA 417) - terminated LIMAX2-00-030-0500-CO1G-D9M Böhnke bp306/bp308 (CANopen CiA 417) - not terminated LIMAX2-00-030-62N5-SSG0-D9M1 NEWLift FST2 LIMAX2-00-030-1000-SSB0 KW Aufzugstechnik David 606 LIMAX2-00-030-1000-CO0 LIMAX02 with CANopen encoder profile DS406 LIMAX2-14-030-1000-SSBX Kollmorgen MRL4 / MFE4 (MPK400)
Type Designation Accessories Table 15: Accessories Order Designation Description Image AB20-80-10-1-R-D-15-BK80 Magnetic Tape Installation kit LIMAX MKF Mounting set for suspended installation with dowel. Installation kit LIMAX MKB Mounting set for suspended installation with guid- ing rails and rail holder. Installation kit LIMAX RMS Mounting set for suspended installation with cross- beam for standard layout.