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- 9 - 

 

 

Safety 

3.3

 

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. 

The LIMAX44 RED - 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: 

 

Only use the device as described 

 

Strictly follow the instructions of this manual 

Avoid in particular: 

 

Remodelling, refitting or changing of the construction or single 

components with the intention to alter the functionality or 
scope of the device. 

Claims resulting from damages due to non-conventional use are not possible. 
Only the operator is liable for damages caused by non-conventional use. 

Summary of Contents for LIMAX44 RED

Page 1: ...ccording 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 me...

Page 2: ...FL 9496 Balzers Technical Support 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...

Page 3: ...dling of Packaging Material 10 4 3 Inspection of Transport 10 4 4 Storage 10 5 Product Features 11 6 Technical Data 14 6 1 Identification 14 6 2 Safety Parameters 14 6 3 Technical Data Magnetic Tape a...

Page 4: ...nting Kit Magnetic Tape only semi guided variant 52 11 2 Mounting Aid Sensor 53 11 3 Spare Material Sensor 53 11 4 Connection Cable 53 12 Disturbances 54 12 1 Error in Position Determination 54 12 2 N...

Page 5: ...e Read Only Memory is used as non volatile data memory FS Functional Safety LSB Least Significant Bit Motorola format When transmitting a value the most significant byte is transmitted first For a 32...

Page 6: ...tructions can result in serious damage to health and even fatal injury CAUTION This symbol in connection with the signal word Caution indicates a possibly dangerous situation Failure to heed these ins...

Page 7: ...goods are agreed upon demount the device considering the safety instructions of this manual and dispose it with respect to the environment Before demounting Disconnect the power supply and secure agai...

Page 8: ...a safe and trouble free operation Non observance of the instructions mentioned in this operating manual can result in hazardous situations 3 2 Personal Protective Equipment Employees have to wear prot...

Page 9: ...ngth 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...

Page 10: ...delivery or only accept under reserve Note the extent of damages on the transportation documents or delivery note File complaint immediately NOTE Claim any damage immediately after recognizing it The...

Page 11: ...her with a safe evaluation unit like for example in ELGO s LIMAX44 Safe or directly with a safe controller unit Together the entire system is able to fulfil the safe ty functions in the elevator accor...

Page 12: ...Box as the complete system LIMAX44 Safe right communication power supply Usage as stand alone sensor Usage in the complete system LIMAX44 Safe comm PWR system boundary electric interfaces safe elevato...

Page 13: ...e system LIMAX44 Safe right communication power supply Usage in the complete system LIMAX44 Safe safety circuit comm PWR system boundary electric interfaces safe elevator control magnetic tape presenc...

Page 14: ...he 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 Fig 4 Info label with addi...

Page 15: ...5 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 Ie Ue 4 A 230 VAC 1 A 24 VDC Short circuit protection 6 A gL gG...

Page 16: ...16 Technical Data 6 4 Dimensions Sensor 6 4 1 Unguided variant Fig 5 Dimensions LIMAX44 RED variant unguided...

Page 17: ...17 Technical Data 6 4 2 Semi guided variant Fig 6 Dimensions LIMAX44 RED variant semi guided...

Page 18: ...AB20 120 20 1 R1 C 16A 4943F 0 m 285 m AB20 120 20 1 R1 C 16B 4943F 285 m 570 m AB20 120 20 1 R1 C 16C 4943F 570 m 786 m Conditions Storage temperature 20 C 85 C Operation temperature 10 C 70 C Humidi...

Page 19: ...available other lengths up to 786 m on request Maximum length error 200 m m Operation temperature 20 C 70 C Storage temperature short run 40 C 85 C medium run 20 C 70 C Relative humidity max 95 non c...

Page 20: ...0 RH Relative humidity max 95 non condensing Dimensions B x H 20 mm 0 1 x 2 45 mm 0 1 Linear expansion coefficient 11 x 10 6 1 K Linear thermal expansion L m L m x 1 K x K L tape length in meter relat...

Page 21: ...cting the sensor can be found under 11 4 Connection Cable LIMAX4R CON 02 62N5 485X M12M Device designation Cable length Version Resolution LIMAX4R LIMAX44 RED 2 channel CON no cable direct attached co...

Page 22: ...use the device in explosive or corrosive environments The device must not be installed close to sources of strong inductive or capacitive interference or strong electrostatic fields CAUTION The elect...

Page 23: ...al operation under consideration of environmental conditions e g temperature fluctuations or that the tape position at any point of the magnetic tape does not move away from its original position by m...

Page 24: ...e shaft ceiling are not certified and must not be used 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 R...

Page 25: ...ached to a guide rail at the top and bottom of the shaft using a mounting kit At the lower attachment pre tensioned springs provide the necessary stability for the hanging magnetic tape and en sure th...

Page 26: ...ELGO offers the LIMAX S RMS H mounting kit 11 1 for the fixation of the guiding rail 8 4 Mounting of the Magnetic Tape Presence Detector This subchapter concerns only the semi guided variant upper ta...

Page 27: ...nd self explanatory mounting on three sides Any M6 hexagon screws according to DIN933 or M6 square nuts ac cording to DIN562 can be inserted in order to attach the system at the desired position Fig 9...

Page 28: ...hat the contact primarily exists between the steel tape and the plastic guiding rail of the sensor These two materials are intended for such operation Tape touches the guide with the steel side Tape t...

Page 29: ...shaft pit Strictly observe the applicable safety regulations when doing so For the electrical installation of the magnetic tape presence detector de energize the safety circuit Fasten the bottom end...

Page 30: ...c side In higher lifts the distance can already be increased up to 5 cm at the initial mounting Make sure that the sensor is installed vertically Misalignment will lead to an in creased wear 9 Now pas...

Page 31: ...ation and First Start Up Fig 14 Assessment of the guiding rail of the tape in the sensor skewed mounting of the magnetic tape Tape is centered in the guide Tape is skewed in the guide Tape is skewed i...

Page 32: ...g height and control the distance between the tape and the guiding rail If the steel side is slightly pressed against the plastic guide the whole time the mounting is ideal Also check the bottom side...

Page 33: ...e sure that the tape clamp with the spring is set back into the correct vertical position in relation to the position switch and the crossbeam and reset the bolt into the original position with a scre...

Page 34: ...sensor The maximum reading distance between the sensor housing and the surface of the magnetic tape must not exceed 8 mm Make sure that the sensor head is mounted vertically 5 Check the correct mount...

Page 35: ...ght and check the distances between the belt and the sensor Also check the underside of the sensor at some points If this is slightly inclined the sensor can be perfectly aligned at the top but still...

Page 36: ...shaft Metal chips like to stick to the tape due to the magnetism 10 Repeat this cleaning procedure before putting the elevator into operation Correct Wrong Wrong General remarks Maximal erlaubter Abs...

Page 37: ...9 5 3 1 RS 485 Interface 43 9 5 4 Protocol Descriptions 43 9 5 4 1 RS 485 Interface 43 9 5 5 Presence Detector Magnetic Tape only semi guided variant 49 9 1 Sensor Design The sensor consists of Senso...

Page 38: ...rated by both channels together Each of the two channels contributes their part of the posi tion information transmission In case of an error each channel is able to signal the request for transition...

Page 39: ...can be operated with an external 12V back up battery or an emergency power supply To maximise the durability of the back up battery one channel is switched off All position comparisons between the tw...

Page 40: ...en blocked intentionally Also see LED ERR ERR red OFF No error Flashing 1 Hz At least one error has been detected but it is not classified as a severe error Find more information on the problem in the...

Page 41: ...necessary repairs Fig 23 Illustrated example of an LED ERR flashing sequence signalling a severe error Table 2 Meaning of flashing codes due to severe errors Flashing code Meaning 01h 02h 03h 04h RAM...

Page 42: ...echnical data of output 6 5 Protocol for alignment of floor positions 9 5 4 in the section on floor information under the respec tive interface 9 5 Connections and Interfaces The following chapters wi...

Page 43: ...terface The communication between the sensor and the evaluation unit is bidirectional The sensor sends the position information and receives the floor information 9 5 4 1 1 Interface Parameters For a...

Page 44: ...sition was determined normally in both channels 1 Due to a reading error in one of the channels the position was extrapolated 5 Signalling faulty tape 0 Tape correct 1 Tape not present or faulty 6 Sig...

Page 45: ...segments a7 a0 Segment A message counter b3 b0 Segment B status bits c19 c0 Segment C coarse resolution position The initialization value for the calculation of the CRC check sum is FFFFFFFFh LIMAX44...

Page 46: ...ly voltage channel B 1 LSB 67 7 mV 239 Highest detected power supply voltage channel B 1 LSB 67 7 mV 244 Errors set in error register channel B since restart bits 16 31 12 2 3 245 Errors set in error...

Page 47: ...lid test drive requires that both channels are activated anyway 9 5 4 1 9 Request for Transition into Safe State If one of the two channels detects that something is out of order by comparing the posi...

Page 48: ...rference has disappeared while it makes sense to set an error in case of a persisting interference The described behaviour is just an example The actual behaviour de pends on the evaluation unit and h...

Page 49: ...Time shift due to omitted comparison between the channels in single channel mode 276 s tS Lag between take over of the RS 485 bus and start bit of the first data bit channel A 2 12 s tH Time to hand...

Page 50: ...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 In order for the sensor to fulfil its task it has to be...

Page 51: ...end a verified position Such a data packet may not be used for safety functions Errors in the transmission of symbols framing errors have to be detected The position has to be valid The position 0 is...

Page 52: ...unting 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 el...

Page 53: ...rews nuts and washers for mounting the sensor 11 3 Spare Material Sensor LIMAX4R Service Set Order designation Description LIMAX4R Service Set Spare part set consisting of each four guide rails screws...

Page 54: ...severe Errors If an error is detected that does not jeopardize the internal programme sequence the error is transmitted to the evaluation unit via external interface The transmission happens in two s...

Page 55: ...pply voltage has a strong undervoltage and therefore channel A is in single channel operation This means that channel B is deliberately switched off 9 2 2 Single Channel Operation Under this condition...

Page 56: ...uit on one side The screens should not be grounded on both sides Signal cables always have to be routed separately from the load power line A safety distance of at least 0 5 m has to be kept from indu...

Page 57: ...occured in the early phase of the initialization Replace the sensor 7 The sensor is not supplied with energy Blackout of the supply or interruption of the supply line Check if the energy supply is wor...

Page 58: ...ording to 12 5 if necessary Defective hardware Replace the sensor 19 Inadmissible extrapolation Too many position jumps occurred Strongly polluted magnetic tape Clean the magnetic tape 13 Maintenance...

Page 59: ...nal fault clearance can lead to severe injuries and dam age of property Therefore Any work to clear the faults may only be performed by suffi ciently qualified staff Arrange enough space before starti...

Page 60: ...magnet tape through the cloth with a slight pressure Additional points to check for the semi guided variant Optical inspection of the position of the tape in the sensor guiding rail Worn off material...

Page 61: ...61 Notes...

Page 62: ...62 Notes...

Page 63: ...nce 60 Mounting Hints 23 Installation procedure 29 Magnetic tape 23 Sensor 27 Mounting aid sensor 53 Non verified position 44 45 Normal operation See Dual channel operation Operating area 22 Operating...

Page 64: ...ame LIMAX44RED 02 MA E_23 19 Subject to change 2019 ELGO Batscale AG ELGO Batscale AG F h r e n w e g 2 0 F L 9 4 9 6 B a l z e r s Fon 423 0 380 02 22 Fax 423 0 380 02 24 Internet www elgo li Mail in...

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