ELGO Electronic LIMAX02 Series 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
 High accuracy and reproducibility

 Absolute position measurement with a length up to 260 m
 Resolution up to 1 mm, higher resolution on request
 Absolute position is always directly available

no referencing even after long power failure

 Compatible with many established controls with absolute encoder interface
 Available interfaces:

SSI, CAN, CANopen (DS406, DS417), RS422, RS232, PROFIBUS

799000350 / Rev. 9 / 2019-04-02
Translation of the original operating manual

- 2 -

Publisher

ELGO Electronic GmbH & Co. KG

Carl-Benz-Str. 1
D-78239 Rielasingen-Worblingen

Technical Support

 [phone] - 0
 [phone]

 [e-mail]

Document- No.

799000350

Document - Name

LIMAX02-00-MA-E_14-19

Document- Revision

Rev. 9

Issue Date

2019-04-02

Copyright

© 2019, ELGO Electronic GmbH & Co. KG

Contents

- 3 -

1 Contents

1 Contents ..................................................................................................... 3

2 General, Safety, Transport and Storage .................................................... 4

2.1 Information Operating Manual ........................................................................................... 4

2.2 Explanation of Symbols ...................................................................................................... 4

2.3 Statement of Warranties ..................................................................................................... 5

2.4 Demounting and Disposal .................................................................................................. 5

2.5 General Causes of Risk ..................................................................................................... 5

3 Product Features ........................................................................................ 7

3.1 Functional principle ........................................................................................................... 7

4 Technical Data ........................................................................................... 8

4.1 Identification .................................................................................................................... 8

4.2 Dimensions Sensor Standard .............................................................................................. 8

4.3 Dimensions Sensor Option unguided ................................................................................... 9

4.4 Dimensions Sensor Option PNO ......................................................................................... 9

4.5 Dimensions Magnetic Tape .............................................................................................. 10

4.6 Technical Data Sensor ..................................................................................................... 10

4.7 Technical Data Magnetic Tape ......................................................................................... 11

5 Installation and First Start-Up ................................................................. 12

5.1 Operating Area .............................................................................................................. 12

5.2 Description installation of the Sensor ................................................................................. 13

5.3 Description installation / Mounting of the Magnetic Tape ..................................................... 14

6 Connections and Interfaces ...................................................................... 19

6.1 LED’s (Operating status and notices).................................................................................. 19

6.2 CAN Interface ................................................................................................................ 19

6.3 SSI Interface ................................................................................................................... 26

6.4 RS232 / RS422 / RS485*................................................................................................. 27

6.5 Option Unguided ........................................................................................................... 30

6.6 Option PROFIBUS Interface .............................................................................................. 31

7 Disturbances, Maintenance, Cleaning ..................................................... 34

7.1 Fault Clearance .............................................................................................................. 34

7.2 Re-start after Fault Clearance ........................................................................................... 34

7.3 Maintenance .................................................................................................................. 35

7.4 Cleaning ....................................................................................................................... 35

8 Type Designation ..................................................................................... 36

8.1 Type Designation ............................................................................................................ 36

8.2 Control specific Sensors ................................................................................................... 37

8.1 Accessories .................................................................................................................... 38

9 Index ........................................................................................................ 39

General, Safety, Transport and Storage

- 4 -

DANGER!
This symbol in connection with the signal word “Danger” indicates an immediate danger for the life and health of
persons. Failure to heed these instructions can result in serious damage to health and even fatal injury.

WARNING!
This symbol in connection with the word „Warning” means a possibly impending danger for the life and health of
persons. Failure to heed these instructions 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 instructions can lead to minor injuries or damage of property.

DANGER!
This symbol in connection with the signal word “Danger” indicates an immediate danger for the life and health of
persons due to voltage.
Failure to heed these instructions can result in serious damage to health and even fatal injury. The operations may
only be carried out by a professional electrician.

NOTE!
… points out useful tips and recommendations as well as information for an efficient and trouble-free operation.

2 General, Safety, Transport and Storage

2.1 Information Operating Manual

This manual contains important information regarding the handling of the device. For your own safety and operational safety, please ob­serve all safety warnings and instructions.
Precondition for safe operation is the compliance with the specified safety and handling instructions. Moreover, the existing local accident
prevention regulations and the general safety rules at the site of operation have to be observed.
Please read the operating manual carefully before starting to work with the device! It is part of the product and should be kept close to the
device and accessible for the staff at any time. The illustrations in the manual are for better demonstration of the facts. They are not neces­sarily to scale and can slightly differ from the actual design.

2.2 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, damage, and injuries.

Warning notes:

Special safety instructions:

Tips and recommendations:

Reference marks:

 Marks a reference to another chapter of this manual.

 Marks a reference to another chapter of another document.

General, Safety, Transport and Storage

- 5 -

CAUTION!
Wrong disposal causes environmental damages!
Electronic scrap, electronic components, lubricants and other auxiliary materials are subject to special refuse and can
only be disposed by authorized specialists!

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.
Selection and installation of the devices as well as their embedding into the controlling system require qualified
knowledge of the applicable laws and normative requirements on the part of the machine manufacturer.

PROTECTIVE CLOTHING
… is close-fitting working clothing with light tear strength, tight sleeves and without distant parts. It serves preliminari­ly for protection against being gripped by flexible machine parts.
Do not wear rings, necklaces or other jewellery.

PROTECTIVE GLOVES
… for protecting the hands against abrasion, wear and other injury of the skin.

PROTECTIVE HELMET
… for protection against injuries of the head.

2.3 Statement of Warranties

The producer guarantees the functional capability of the process engineering and the selected parameters.

2.4 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.
Before demounting, disconnect the power supply and secure against re-start. Then disconnect the supply lines physically and discharge
remaining energy. Remove operational supplies and other material.
Disposal:
Recycle the decomposed elements: Metal components in scrap metal, Electronic components in electronic scrap, Recycle plastic compo­nents, dispose the remaining components according to their material consistence

Local authorities and waste management facilities provide information about environmentally sound disposal.

Safety

2.5 General Causes of Risk

This chapter gives an overview of all important safety aspects to guarantee an optimal protection of employees and a safe and trouble-free
operation. Non-observance of the instructions mentioned in this operating manual can result in hazardous situations.

2.5.1 Personal Protective Equipment

Employees have to wear protective clothing during the installation of the device to minimize danger of health.
Therefore: Change into protective clothing before performing the works and wear them throughout the process.
Additionally observe the labels regarding protective clothing in the operating area.

Protective clothing:

General, Safety, Transport and Storage

- 6 -

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.

CAUTION!
Transport the package (box, palette etc.) professionally. Do not throw, hit or fold it.

NOTE!
Claim any damage immediately after recognizing it. The claims for damage must be filed in the lawful reclaim peri­ods.

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.

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

2.5.3 Safety Instructions for Transport, Unpacking and Loading

2.5.4 Handling of Packaging Material

Notes for proper disposal:  2.4

2.5.5 Inspection of Transport

Check the delivery immediately after the receipt for completeness and transport damage.
In case of externally recognizable transport damages:

 Do not accept the delivery or only accept under reserve.
 Note the extent of damages on the transportation documents or delivery note.
 File complaint immediately.

2.5.6 Storage

Store the device only under the following conditions:

 Do not store outside
 Keep dry and dust-free
 Do not expose to aggressive media
 Protect from direct sun light
 Avoid mechanical shocks
 Storage temperature ( 4) needs to be observed
 Relative humidity ( 4) must not be exceeded
 Inspect packages regularly if stored for an extensive period of time (>3 months)

Product Features

- 7 -

3 Product Features

LIMAX02 is an absolute measuring shaft information system that is used for positioning of elevator cars. It con­sists 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. The system can be placed anywhere in
the shaft, depending of the space conditions. With the small space requirement, LIMAX02 is perfect for retrofit­ting and modernization.

LIMAX02 detects the absolute car position up to a hoisting height of 260 meters and is designed for speeds of
up to 10 m/s. In the standard configuration LIMAX02 evaluates the position with a resolution of 1 mm. Resolu­tions up to 0.0625 mm are possible.

LIMAX02 is equipped with various interfaces and thus can be directly connected to the most established elevator
controls.

The features at a glance:

 Robust measuring principle for usage in rough environments
 Simple and flexible installation
 High accuracy and reproducibility
 No slip
 Absolute position is always directly available - no referencing even after long power outages

3.1 Functional principle

The concept is simple: A sensor mounted on the elevator car detects the current absolute car position using Hall
sensors, which read the magnetic tape mounted in the shaft without any contact. Through this method, the car´s
position can be determined at any time with high accuracy. The guide is only used to keep the tape within a
defined distance from the sensor.

Due to its robustness, the magnetic tape technology is ideal for use in elevator systems - dust, dirt, and even
dense black smoke won't affect measurement quality. The system even withstands humidity and high tempera­tures without any problems - making LIMAX02 ideally suited for firefighters´ elevators. And that with a long
maintenance-free service life.

Technical Data

- 8 -

4 Technical Data

4.1 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.
When corresponding with ELGO always indicate this data.

4.2 Dimensions Sensor Standard

Figure 1: Dimensions Sensor Standard

Technical Data

- 9 -

244

236

40

55

55

51

271

55

51

32,5

41,5

13,5

38

19,5

4.3 Dimensions Sensor Option unguided

Figure 2: Dimensions Sensor Option unguided

4.4 Dimensions Sensor Option PNO

Figure 3: Dimensions Sensor Option PNO

Technical Data

- 10 -

LIMAX02 (Standard version)

Mechanical Data

Measuring principle

absolute

Repeat accuracy

+/- 1 Increment

System accuracy in µm at 20°C

+/- (1000 + 50 x L[m])
L = measuring length in meter

Distance from sensor to magnetic
tape

4 mm
Basic pole pitch

8 mm

Sensor housing material

aluminium

Sensor housing dimensions

L x W x H = 246 x 55 x 55 mm

Necessary type

AB20-80-10-1-R-D-15-BK80

Maximum measuring length

260 m

Connection

Open cable ends (more options  8)

Sensor cable

3 m standard cable length (other on request)

Weight

approx. 460 g without cable (cable approx. 60 g/m)

Electrical Data

Supply voltage

10 … 30 VDC

Residual ripple

10 … 30 VDC < 10%

Power input

max. 200 mA

Interfaces

SSI, CAN, CANopen (DS406, DS417), RS422, RS232, RS485, PROFIBUS

Resolution

According to the Type Designation ( 8)

Speed

max. 10 m/s (higher speeds on request)

Conditions

Storage temperature

-20 … +85° C

Operation temperature

-10 … +70° C
(-25 … +85° C on request)

Humidity

max. 95 %, not condensing

Protection class

IP50

Scale 5:1

4.5 Dimensions Magnetic Tape

Figure 4: Dimensions Magnetic Tape

4.6 Technical Data Sensor

Technical Data

- 11 -

TEMPLATE Magnetic Tape AB20-80-10-1-R-D-15-BK80

Coding

absolute, single track system

Pole pitch

8 mm

Operation temperature installed

-20 … +65° C
(-20 … +80° C when using without adhesive tape, options „B“ or „D“)

Storage temperature uninstalled

Short-term: -10 … +60° C
Medium-term: 0 … +40° C
Long-term: +18° C
(-20 … +80° C when using without adhesive tape, options „B“ or „D“)

Gluing temperature:

+18 … +30° C

Relative humidity

max. 95 %, non-condensing

Accurateness 20°C in µm

+/- (1000 + 50 x L[m])
(L = measuring length in meters)

Material carrier tape

Precision strip 1.4310 / X10CrNi 18-8 (EN 10088-3)

Double-faced adhesive tape

3M-9088 (observe instructions), others on request

Dimensions

 without adhesive tape:
10 mm (+/- 0.1) x 1,35 mm (+/- 0.11)
 with adhesive tape (excl. carrier):
10 mm (+/- 0.1) x 1,56 mm (+/- 0.13)
 with adhesive tape (incl. carrier):
10 mm (+/- 0.1) x 1,63 mm (+/- 0.14)

Length expansion coefficient

  16 x 10-6 1/K

Thermal length expansion

∆L[m] = L[m] x [1/K] x ∆[K]
(L = tape length in meters, ∆ = relative temperature change)

Available lengths

up to 260 m

Weight magnetic tape

ca. 62 g/m (incl. magnetic tape and cover tape)

Tape imprint

ELGO standard, printing color black, digit height >= 5 mm

Influence of external magnets

External magnetic fields must not exceed 64 mT (640 Oe; 52 kA/m) on
the surface of the magnetic tape as this could damage or destroy the
code on the tape.

Protection class

IP65

4.7 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

Installation and First Start-Up

- 12 -

CAUTION
Please read the operating manual carefully before using the device! Strictly observe the Instal­lation 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.

Der Betreiber ist dazu verpflichtet, geeignete sicherheitsrelevante Maßnahmen zu ergreifen
und durchzuführen.

The operator is obliged to take appropriate safety measures. The first start-up may only be
performed by staff that has been trained and authorized by the operator.

WARNING!
Do not 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 electrical connections must be made by suitably qualified personnel in accordance with
local regulations.

The device may be designed for switchboard mounting. During work on the switchboard, all
components must be de-energized if there is a danger of touching the energized parts!
(protection against contacts)

Wiring works may only be performed in the de-energized state!

Thin cable strands have to be equipped with end sleeves!

Before switching on the device, connections and plug connectors have to be checked!

The device must be mounted in a way that it is protected against harmful environmental influ­ences such as splashing water, solvents, vibration, shock and severe pollution and the operat­ing temperature must not be exceeded.

5 Installation and First Start-Up

5.1 Operating Area