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Elgo LIMAX44 RED Operating Manual

Safe magnetic absolute shaft infortmation system
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D-103836 / Rev. 0 / 2019-06-03
799000969
Operating Manual
LIMAX44 RED
Safe Magnetic Absolute Shaft Information System
(Translation of the original operating manual)
 Redundant sensor with integrated monitoring
 TÜV certified according to SIL 3 in compliance with EN 61508
 Absolute position always directly available – no reference journey even af-
ter long power failures
 RS-485 Interface
 Easy and flexible installation
 Silent measuring principle
 Immune to dirt, smoke and moisture
 Door zone indication for up to 127 floors
 Speeds up to 16 m/s
- 1 -
Registration No.:
968/FSP 1850.00/19

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  • Page 1 D-103836 / Rev. 0 / 2019-06-03 799000969 Operating Manual LIMAX44 RED Safe Magnetic Absolute Shaft Information System (Translation of the original operating manual) Registration No.: 968/FSP 1850.00/19  Redundant sensor with integrated monitoring  TÜV certified according to SIL 3 in compliance with EN 61508 ...
  • Page 2 +49 (0) 7731 9339 – 0  +49 (0) 7731 2 13 11  support@elgo.de Document- No. D-103836 Document - Name LIMAX44RED-02-MA-E_23-19 Article No. 799000969 Document- Revision Rev. 0 Issue Date 2019-06-03 Copyright © 2019, ELGO Batscale AG - 2 -...

  • Page 3: Table Of Contents

    Contents 1 Contents Contents ..................... 3 General ....................5 Information Operating Manual ................5 Terms and Abbreviations ..................5 Explanation of Symbols ..................6 Referenced Documents ..................7 Statement of Warranties ..................7 Demounting and Disposal ..................7 RoHS Conformity ....................7 Safety ....................
  • Page 4 Contents Operating Modes ..................... 39 LED Signals ...................... 39 Door Zone Indication ..................42 Connections and Interfaces ................42 Requirements for Evaluation Unit ........... 51 10.1 Hardware Requirements ..................51 10.2 Software Requirements ..................51 Accessories ..................52 11.1 Mounting Kit Magnetic Tape (only semi-guided variant) .......... 52 11.2 Mounting Aid Sensor ..................

  • Page 5: General

    Since LIMAX44 RED has no direct connection, it has to be connected to the safety circuit via the safe evaluation unit.

  • Page 6: Explanation Of Symbols

    General Explanation of Symbols Special notes in this manual are characterized by symbols. The notes are introduced by signal words which express the magnitude of danger. Please follow this advice and act carefully in order to avoid accidents and damage and injuries. Warning notes: DANGER! This symbol in connection with the signal word “Danger”...

  • Page 7: Referenced Documents

    Local authorities and waste management facilities provide information about environmentally sound disposal. RoHS Conformity LIMAX44 RED complies to the EU Directive on the restriction of the use of certain hazardous substances in elec- trical and electronic equipment (RoHS) 2011/65/EU and its amendment from EU Directive 2017/2102 of 15 November 2017.

  • Page 8: Safety

    Safety 3 Safety CAUTION! Please read the operating manual carefully, before using the device! Observe the installation instructions! Only start up the device if you have understood the operating manual. The operating company is obliged to take appropriate safety measure. The initial operation may only be performed by qualified and trained staff.

  • Page 9: Conventional Use

    The product described in this manual was developed to execute safety-related functions as a part of an entire assembly or machine. It is the responsibility of the manufacturer of a machine or installation to ensure the prop- er functioning of the system. The ELGO-device is only conceived for the conventional use described in this man- ual.

  • Page 10: Transport And Storage

    Transport and Storage 4 Transport and Storage Safety Instructions for Transport, Unpacking and Loading CAUTION! Transport the package (box, palette etc.) professionally. Do not throw, hit or fold it. Handling of Packaging Material Notes for proper disposal:  2.6 Inspection of Transport Check the delivery immediately after the receipt for completeness and transport damage.

  • Page 11: Product Features

    Since it requires little space, LIMAX44 RED is also suitable without restrictions for retrofitting and modernizations. The LIMAX44 RED is able to cover lifting heights of up to 786 meters and speeds up to 16 m/s. Overview of features: Robust measuring principle for rough conditions ...
  • Page 12 Usage in the complete system LIMAX44 Safe system boundary electric interfaces Fig. 1: LIMAX44 RED as unguided variant in combination with a safe controller (left) or in combination with the safe evalua- tion unit Safe Box as the complete system LIMAX44 Safe (right) - 12 -...
  • Page 13 Usage in the complete system LIMAX44 Safe system boundary electric interfaces Fig. 2: LIMAX44 RED as semi-guided variant in combination with a safe controller (left) or in combination with the safe eval- uation unit Safe Box as the complete system LIMAX44 Safe (right) - 13 -...

  • Page 14: Technical Data

    Furthermore, the type label contains a unique, traceable device number, the production date as well as the hardware and software versions. When corresponding with ELGO always indicate this data. Fig. 3: Type label for identification of the sensor Also, there is an info label on the sensor that gives the following additional information on the sensor: manufac- turer, supply voltage, power consumption, CRC check sum of the software and the registration number of the certificate.
  • Page 15 Technical Data ZS 236-02ZR-1519 IEC/EN 60947-5-1 Regulations: BG-GS-ET-15 Operating temperature: -30 °C … +80 °C Dimensions (without cable): L x B x H = 30 x 58.5 x 30 mm Protection class: IP67 Usage category: AC-15; DC-13 4 A / 230 VAC; 1 A / 24 VDC Short-circuit protection: 6 A gL/gG D-fuse Terminal cross-section:...

  • Page 16: Dimensions Sensor

    Technical Data Dimensions Sensor 6.4.1 Unguided variant Fig. 5: Dimensions LIMAX44 RED variant unguided - 16 -...
  • Page 17 Technical Data 6.4.2 Semi-guided variant Fig. 6: Dimensions LIMAX44 RED variant semi-guided - 17 -...

  • Page 18: Technical Data Sensor

    Technical Data Technical Data Sensor LIMAX44 RED (Standard version) Mechanical Data Measuring principle: absolute Measurement: linear Maximum measuring length 786 m Speed: max. 16 m/s Resolution:  7 Type Designation Repeat accuracy: +/- 1 Increment +/- (1000 µm + 100 µm x L[m]) System accuracy at 20°C:...

  • Page 19: Technical Data Magnetic Tape

    Weight of magnetic tape ca. 52 g/m Tape imprint ELGO Standard, colour black, front size ≥ 5 mm External magnetic fields shall not exceed 64 mT (640 Oe; 52 kA/m), External magnet: otherwise the magnetic coding will be damaged or destroyed.
  • Page 20 Weight of magnetic tape ca. 140 g/m (incl. adhesive tape and carrier) Tape imprint ELGO Standard, colour black, front size ≥ 6 mm External magnetic fields shall not exceed 64 mT (640 Oe; 52 kA/m), External magnet: otherwise the magnetic coding will be damaged or destroyed.

  • Page 21: Type Designation

    Type Designation 7 Type Designation LIMAX4R 62N5 485X M12M Example: Device designation: LIMAX4R = LIMAX44 RED (2-channel) Version: = semi-guided variant = unguided variant Cable length: = no cable, direct attached connector Resolution: 62N5 = 62.5 µm = 0.0625 mm...

  • Page 22: Installation And First Start-Up

    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 per- sons, property or assets. The operator is obliged to take appropriate safety measures.

  • Page 23: General Information

    In the unguided version, the magnetic tape is glued in the groove of the elevator rail or on an additional carrier tape with the supplied adhesive tape. The installation is dependent on and different parameters, which are de- pendent on the manufacturer of the complete lift. ELGO cannot provide exact installation instructions for this. NOTE! When mounting the magnetic tape, the points concerning the align- ment of the sensor to the magnetic tape and the bonding (...
  • Page 24 Further information on the ELGO mounting kits can be found in the chapter Accessories on page 52. 8.3.2.1 Mounting of the Tape along the Guiding Rail with Tension Weight The magnetic tape is attached with a mounting kit at the top and the bottom of the shaft on a guiding rail.
  • Page 25 Fig. 7: Mounting of the tape on the guiding rail with tensions weight ELGO offers the LIMAX S-RMS-WH mounting kit ( 11.1) for the fixation of the guiding rail. 8.3.2.2 Mounting of the Tape along the Guiding Rail with tension spring The magnetic tape is attached to a guide rail at the top and bottom of the shaft using a mounting kit.

  • Page 26: Mounting Of The Magnetic Tape Presence Detector

    Fig. 8: Mounting of the tape on the guiding rail with tensions spring ELGO offers the LIMAX S-RMS-H mounting kit ( 11.1) for the fixation of the guiding rail. Mounting of the Magnetic Tape Presence Detector This subchapter concerns only the semi-guided variant.

  • Page 27: Mounting Of The Sensor

    DIN562) can be inserted in order to attach the system at the desired position. Fig. 9: Mounting grooves on the sensor in the unguided variant (left) and the semi-guided variant (right) ELGO offers the LIMAX44 RED mounting angle ( 11.3) for the mounting of the sensor on the cabin roof. NOTE! When mounting the sensor or inserting the magnetic tape into the guid- ing rail, the arrows on the tape and the sensor need to be observed.
  • Page 28 Installation and First Start-Up Tape touches the Tape touches guide with the the guide with magnetized side the steel side Wrong Tolerable Recommended Constant contact Vertical alignment. Enforced contact between magnetized Minimal conctact between steel band and side and sensor housing between tape and polymer guide lead to abrasion...

  • Page 29: Installation Procedure

    The semi-guided LIMAX44 RED can generally be mounted in any position in the shaft. This makes for maximum flexibility for retrofitting and modernizations. 1. Attach the top end of the tape in the shaft head using an ELGO mounting kit. Check for correct orienta- tion. The imprinted arrows must point towards the shaft head.
  • Page 30 Installation and First Start-Up magnetic tape min. 33 mm guidance sensor mounting bracket cabin Fig. 12: Distance and orientation of the magnetic tape in relation to the sensor. 8. Now adjust the distance between the tape and the sensor. For lifting heights up to 50 m we recommend a distance of minimum 33 mm.
  • Page 31 Installation and First Start-Up Tape is Tape is Tape is centered in skewed in skewed in the guide the guide the guide Fig. 14: Assessment of the guiding rail of the tape in the sensor – skewed mounting of the magnetic tape - 31 -...
  • Page 32 Installation and First Start-Up 11. IMPORTANT: Installation check! The tape tension and the offset of the sensor are recommended values based on experience. What is es- sential, however, is that the tape does not constantly rub on the sensor with the magnetic side during op- eration.
  • Page 33 Unguided variant The unguided LIMAX44 RED is mounted on a guide rail or other support. Since the mounting is strongly de- pendent on the environment, the details cannot be dealt with in this chapter. It is the user's responsibility to en- sure that the system is properly installed in accordance with the instructions given in this chapter.
  • Page 34 Installation and First Start-Up NOTE! Ensure a proper vertical tape mounting. If the order of the tape segments is wrong, a wrong position will be read during the transition from one segment to the next and the sensor will go into the error state. 2.
  • Page 35 Installation and First Start-Up General remarks:  The sensor scanning surface must be kept parallel to the tape over the entire measuring distance  A twist as shown in the left or right illustration leads to incorrect measurement results, which in turn entails the request for the safe state.
  • Page 36 Installation and First Start-Up Maximum Maximal Minimum Minimal Vorgeschriebener Specified permitted erlaubter permitted erlaubter mounting distance Montageabstand Abstand distance distance Abstand Minimum Minimal Maximum Maximal Distance identical Abstand gleich permitted erlaubter permitted erlaubter wie oben to top Wrong Correct Wrong Abstand distance Abstand...

  • Page 37: Sensor Design

    Design and Functions 9 Design and Functions Sensor Design ....................37 Operating Modes ..................... 39 9.2.1 Dual-Channel Operation ....................39 9.2.2 Single-Channel Operation ....................39 LED Signals ...................... 39 9.3.1 Signalling Severe Errors ....................41 Door Zone Indication ..................42 Connections and Interfaces ................
  • Page 38 Design and Functions earth lug connector sensor housing tape guide screw for fixing LED indicator the tape guide Fig. 20: Components of the sensor (semi-guided variant) earth lug connector sensor housing LED indicator Fig. 21: Components of the sensor (unguided variant) The electronic part of the sensor is basically done in a two-channel design.

  • Page 39: Operating Modes

    Design and Functions Operating Modes The sensor can be operated in two different modes: Safe dual-channel operation  Non-safe single-channel operation (energy saving mode)  Switching between modes happens automatically, depending on the supply voltage. 9.2.1 Dual-Channel Operation Usually, the sensor works in dual-channel operation. In this mode, both channels are fully functional and deter- mine the position independently of each other.
  • Page 40 Design and Functions Each state has a meaning regarding whether an error occurred and how serious the error is. The following table shows what states can be signalized by the five LEDs: Table 1: Meaning of LED signals Colour Status Meaning PWR A yellow...

  • Page 41: Signalling Severe Errors

    4 second break. You can find an example of such a sequence in Fig. 23. If such a severe error occurs, the sensor has to be replaced. The flashing sequence codes support ELGO in finding the exact cause for an error in case of necessary repairs.

  • Page 42: Door Zone Indication

    9.5.1 Power Supply Normally, LIMAX44 RED is supplied with 24 VDC. In order to guarantee the functioning of the door zone indica- tion for evacuation in case of a power failure, an external 12 V battery can be connected. Switching between the two supply voltages has to take place outside the sensor and can be realized for example...

  • Page 43: Pin Assignment

    Design and Functions 9.5.3 Pin Assignment 9.5.3.1 RS-485 Interface The internal termination resistor of the RS-485 bus is assembled in all sensors with RS-485 interface, even when it is not explicitly stated in the interface options ( 7 Type Designation). The bus must be terminated also on the side of the evaluation unit.
  • Page 44 Design and Functions Segment Length in bits Content Status bits Verified position, coarse resolution (1 LSB ≙ 1 mm) CRC check sum for segments A to C Additional information Non-verified, high-resolution position offset (1 LSB ≙ 62.5 µm) NOTE! In single-channel operation, channel B is switched off and segments D- F are not transmitted.
  • Page 45 The initialization value for the calculation of the CRC check sum is FFFFFFFFh. LIMAX44 RED calculates the CRC check sum in reverse bit order, which causes the calculated CRC check sum to be transmitted backwards. The calculated CRC check sum is inverted bitwise before the transmission. The transmission is in the Motorola format.
  • Page 46 Design and Functions Counter Content Reading Highest detected power supply voltage channel A (1 LSB ≙ 67.7 mV) Errors set in error register channel A since restart, bits 16 … 31 ( 12.2.3) Errors set in error register channel A since restart, bits 0 … 15 ( 12.2.3) Operating time (seconds since restart) channel A bits 16 …...
  • Page 47 MSB of the flush position 127 floor (1 LSB ≙ 16 mm) This data is for the transmission of the floor image, so that LIMAX44 RED can generate the door zone signal as return motion information. For this purpose, the resolution of 16 mm is sufficient.
  • Page 48 9.5.4.1.10 Bus Timing LIMAX44 RED divides the transmitted messages into two packets. The first data packet, consisting of segments A to C ( 9.5.4.1.2 Structure of a Message), is sent by channel A; the second data packet, consisting of segments D to F, is transmitted by channel B.

  • Page 49: Presence Detector Magnetic Tape (Only Semi-Guided Variant)

    The presence detector serves to assure that the magnetic tape is in the correct position and stays there. Using the appropriate mechanics it is possible to detect the following faults: The evaluation unit may only occupy the RS-485 bus after t has elapsed because LIMAX44 RED cannot process the infor- mation earlier. - 49 -...
  • Page 50 Design and Functions Tape rupture above the cabin / above the sensor  Tape rupture below the cabin / below the sensor  Loosening of the tape fixation in the shaft head  Magnetic tape getting stuck in the sensor ...

  • Page 51: Requirements For Evaluation Unit

    Requirements for Evaluation Unit 10 Requirements for Evaluation Unit 10.1 Hardware Requirements The design and the structure of the input circuit of the evaluation unit are generally subject to the specifications of the evaluation unit. When working with a multi-channel structure, the data has to be transmitted to all chan- nels.

  • Page 52: Accessories

    Accessories 11 Accessories 11.1 Mounting Kit Magnetic Tape (only semi-guided variant) ELGO offers the following mounting kits for fixing the magnetic tape. LIMAX S-RMS-H LIMAX S-RMS-WH Order designation Description LIMAX S-RMS-H Magnetic tape installation kit with tape detection and tension spring for high rise...

  • Page 53: Mounting Aid Sensor

    11.2 Mounting Aid Sensor LIMAX3 MW SET Order designation Description LIMAX3 MW SET Mounting angle for LIMAX33/LIMAX44 RED with four each of screws, nuts and washers for mounting the sensor 11.3 Spare Material Sensor LIMAX4R Service Set Order designation Description...

  • Page 54: Disturbances

    Disturbances 12 Disturbances 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 12.5. In case of disturbances that cannot be eliminated by following the advice and the fault clearance measures giv- en here, please contact the manufacturer (see second page).

  • Page 55: Severe Errors

    Under this condition, channel A continues to send its positions and sets the relevant status bit (section Status Bits in the chapter of the relevant interface  9.5.4). When the voltage returns and all error detection measures operate in their entirety in both channels, LIMAX44 RED returns to normal operation ( 9.2.1). 12.4 Informative Errors (not Safety-Relevant) The two chapters 12.2 and 12.3 mainly treated errors in the safety-relevant processing which require the transi-...

  • Page 56: Fault Clearance

    Disturbances NOTE! As long as there is “only” an informative error the sensor still transmits valid position data. However, it is possible that the door zone indica- tion is not working as desired. The sensor should be replaced. 12.5 Fault Clearance CAUTION! The device, the connection line and the signal cable must not be in- stalled next to sources of interference that emit strong inductive or ca-...

  • Page 57: Possible Errors And Their Clearance

    Disturbances 12.6 Possible Errors and their Clearance 12.6.1 General interferences The following table shows possible interferences and their clearance. Table 10: General interference clearance Problem Possible cause Necessary action (1) The sensor does not transmit The sensor is not supplied with energy Proceed with pos (7) position data A severe error occurred.
  • Page 58 Disturbances Problem Possible cause Necessary action necessary Defective hardware Replace the sensor. Memory error EEPROM Defective hardware Replace the sensor. not used Error while writing the EEPROM Switch the sensor off and on again. Failure of the comparison Strong electromagnetic interference Perform the fault clearance according to ...

  • Page 59: Re-Start After Fault Clearance

    Disturbances 12.7 Re-start after Fault Clearance After the fault clearance: 1. Reset the emergency stop mechanism if necessary 2. Reset the error report at the super-ordinate system if necessary. 3. Ensure that there are no persons in the danger area. 4.

  • Page 60: Maintenance

    Maintenance works may only be completed by staff that has been au- thorized and trained by the operator. The maintenance of the LIMAX44 RED should be done in the course of the regular servicing of the elevator. The maintenance work consists of the following: Optical inspection of the magnetic tape.
  • Page 61 Notes: - 61 -...
  • Page 62 Notes: - 62 -...

  • Page 63: Index

    Index 15 Index Abbreviations ............ 5 Sensor ............27 Accessories ............. 52 Mounting aid sensor ........53 Accident prevention regulations......5 Non-verified position ......... 44, 45 Available versions ..........21 Normal operation ..See Dual-channel operation Cable ......... See Connection cable Operating area ..........
  • Page 64 F ö h r e n w e g 2 0 , F L - 9 4 9 6 B a l z e r s Subject to change - © 2019 Fon.:+423 (0) 380 02 22, Fax.:+423 (0) 380 02 24 ELGO Batscale AG Internet: www.elgo.li, Mail: info@elgo.li - 64 -...

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