Leine Linde 1000 Extreme Encoder

Overview

Leine Linde 1000 Extreme Encoder Multifunctional Durability

In many applications within metal, mining and marine industries the demands on the equipment is exceptional. The machines are subject to exposure from mechanical loads, vibrations and shock in an environment of dust, liquids and high temperatures. They handle advanced machinery with utmost safety demands and economical value – failure may never be an option. Such conditions require components of extraordinary durability, ready to meet extreme
challenges in the field.

Robustness first

The encoders in the 1000 series are designed based on one key requirement – offer the most robust mechanical solution possible. The space for ball bearings has been optimized, enabling a dual set of bearings with dimensions that are nothing less than extreme when it comes to encoders. The high encapsulation level, IP67, protects the inner parts from dust and liquids, and as special option the housing can even be provided in stainless steel.

Leine Linde 1000 Extreme Encoder Modular, Redundant and Multifunctional

The 1000 series is based on a modular concept with many options that can be combined into one multifunctional unit. One encoder unit may include dual incremental outputs for redundant speed feedback together with an absolute position output with optional fieldbus technology. This gives a redundant and multifunctional encoder adapted for each specific application.

ENCODER TECHNOLOGY

An incremental encoder usually generates a series of pulses in response to a linear or rotary motion. These pulses can be used to measure speed or be fed to a PLC or counter to keep track of a relative position. The output signal of an incremental encoder is normally an electrical square wave signal with a certain frequency related to the speed of the encoder shaft.

Absolute rotary encoders generate a position value that indicates the actual position of the encoder shaft directly. A major benefit of absolute encoders is that if the application loses power, the encoder is able to keep track of its position also if the shaft is turned during the power loss.

This is due to the genuine absolute scanning principle. An absolute encoder can also be used to calculate a digital speed value. By internally dividing the difference in position with a small delta time an accurate speed value can be calculated and transmitted to the subsequent electronics.

Other types of encoders such as tachometers, i.e. an encoder with analog current outputs (0-20 mA or 4-20 mA) related to the speed or position of its shaft, may also be offered from Leine&Linde. Thus the principle function of the encoder is always the same, i.e. an encoder converts a mechanical movement of its shaft into an electrical measurable unit representing the shaft’s speed or position.

Encoders are often used on electrical motors in the paper and steel industries, cranes and material handling systems as well as various types of measurement, testing and inspection systems. The pictures below show some of the applications.

Description 1000 Extreme

Extreme in every way. Handles most things

Leine Linde 1000 Extreme Encoder The steel industry has many examples of environments with extreme requirements in terms of temperature, mechanical forces, vibrations and shocks. For such types of applications, we have designed the 1000 series. An encoder series with exceptional durability, suited to an exposed environment.

Thanks to a high encapsulation level the encoder’s internal parts are protected from dust and liquids. We can manufacture the product in stainless steel on request. We offer different incremental and absolute interfaces, or combinations thereof in a single product. The absolute interfaces available include SSI and EnDat as well as fieldbus communication.

Specification

Technical data

Operating temperature : -40..+70 °C or -20..+100 °C *
Ingress protection class [IEC 60529] : IP67
Vibration [IEC 6006826] : 300 m/s²
Shock [IEC 60068227] : 2000 m/s²
Max shaft loads (axial/radial) : 1000N/680N **
Cover material : Anodized aluminum ***
Shaft material : Stainless steel
Rotational speed : max 4000 rpm
Weight approx.: 6900 g ****

* Optional: -40..+70 °C standard for interface HCHTL, SSI, parallel, PROFIBUS, CRG Over speed -20..+100 °C standard for interface HTL, TTL, RS422, EnDat
** Based on variant with Ø15 mm shaft
*** Stainless steel upon request
**** Based on variant with one box and no stub shaft

Accessories

Mounting accessories Part number

Base plate for foot-mounting : PN 680846-01
Shaft coupling 11-11 mm with keyway : PN 46441P33P33
Shaft coupling 15-15 mm with keyway : PN 46441P40P40

OptoLink gateways Part number

CRG OptoLink Transmitter 9-30 Vdc supply, HTL input : PN 01300320
CRG OptoLink Receiver 9-30 Vdc supply, HTL output : PN 01300330
CRG OptoLink Receiver 9-30 Vdc supply, RS-422 output : PN 01300332
CRG OptoLink Receiver 5 Vdc supply, TTL output : PN 731720-0

Technical data
Diameter	115 mm
Vibration	300 m/s²
Shock	2000 m/s²
Shaft load axial	1000 N
Shaft load radial	680 N
Encapsulation level	IP67
Temperature	Variants up to -40 .. +100 ºC

Modular concept of the 1000 series

Mechanics

Pre-mounted stub shaft Ø160 mm
Pre-mounted stub shaft Ø220 mm
Euro-flange Ø115 mm with solid shaft Ø11 mm
Euro-flange Ø115 mm with solid shaft Ø15 mm

Output

Encoder output signals are available in a variety of different interfaces. Consult page 4-5 for possible combinations and put together your own encoder with up to four separate outputs.

Incremental interfaces

There are several variations of incremental interfaces with different supply voltages and signal levels. When choosing an interface, it is necessary to take into account factors in the application’s operating environment. The exact properties of the interface is affected by frequency, cable length and temperature.

Dual incremental outputs

Two separate encoder outputs can be combined into one and the same terminal box, equipped with two cable outlets. This solution provides added safety in the form of redundancy, the outputs are based on two separate scanning LED:s and electronic circuits. The outputs are galvanically insulated from each other and may be connected to two separate systems for different function or for redundancy. The dual option is available for all incremental interfaces.

SSI 25 bit

SSI or Synchronous Serial Interface is a digital point-to-point interface. It provides unidirectional communication at speeds up to 1 MHz by the use of only four wires. The SSI interface is available with 25 bit resolution, corresponding to 8192 unique positions single turn and 4096 revolutions multi turn.

EnDat 25 bit

The EnDat interface is a digital bidirectional interface. It is capable of transmitting position values from absolute encoders, as well as reading and updating information stored in the encoder. Thanks to the serial transmission method only four signal lines are required. It is available with 25 bit resolution, corresponding to 8192 unique
positions single turn and 4096 revolutions multi turn.

PROFIBUS 25 bit

PROFIBUS is a powerful and versatile open fieldbus, defined by several international standards. Leine&Linde’s encoders follow the device profiles for DPV0 and DPV2. A PROFIBUS system is set up with slave-to-slave communication, which means that slaves in a net can exchange information with each other without communication
being initiated by the master.

This type of communication is very efficient and fast and reduces the response time on the bus by up to 90%. PROFIBUS encoder functionality includes position read out, changed direction of counting, diagnostic data, scaling function, preset value function, as well as velocity read-out. The PROFIBUS interface is available with 25 bit resolution, corresponding to 8192 unique positions single turn and 4096 revolutions multi turn.

Parallel 13 bit

Parallel output provides an absolute position available simultaneously on the output. The signal is transferred over one separate cable wire per bit, which gives the advantage that all the data is available in real time, all the time. The parallel output is available with up to 13 bit single turn resolution.

CRG Over speed

The CRG Over speed features a pre-programmed frequency value for over speed indication. If the limit speed is reached a mechanical relay will change state to indicate over speed to the system. A typical solution is to use a 1000 series encoder with two separate terminal boxes – one for an incremental signal output connected to the motor drive system, and the other for the CRG Over speed function with relay outputs for alarm. In safety critical applications it is also important to know that the control system itself is reliable.

Therefore the CRG Over speed features advanced logic to monitor that the encoder’s basic function is reliable at all moments. Functionality includes redundant over speed outputs as well as monitoring of signal detection, state transition and encoder diagnostics. This combined over speed and function monitoring system makes the CRG Over speed a unique product for safety applications where a reliable speed is required.

Output box A

HCHTL
HTL
TTL
RS422
Dual 2xHCHTL
Dual 2xHTL
Dual 2xTTL
Dual 2xRS422
SSI 25 bit
EnDat 25 bit
PROFIBUS 25 b

Output box B (optional)

HCHTL
HTL
TTL
RS422
Dual2xHCHTL
Dual2xHTL
Dual2xTTL
Dual2xRS422
SSI 25 bit
EnDat 25 bit
PROFIBUS 25 bit
Parallel 13 bit
CRG Overspeed
Base plate for footmounting

Resolution (incremental)

1024, 2048, 2500, 3072, 4096, 5000, 8192, 10000 ppr. Other pulse rates available upon request

Cover

Side mounted box (cable gland pointing downwards) Anodized aluminium cover.
Top mounted box (cable gland pointing backwards) Anodized aluminium cover.
Special stainless steel cover (cable gland pointing radially)

Source : inaparts.com

Download : Datasheet