Encoders and sensors for pulp and paper industry applications
Production uptime and precision are critical factors in the complex production processes of the pulp and paper industry. Leine Linde’s encoders and sensors provide reliable feedback on position and speed throughout the papermaking process so that all drives and motors can work smoothly and with precise control.
Leine Linde encoders can be trusted to deliver precise data, month after month and year after year - even in demanding environments. We have an excellent track record in the pulp & paper industry. By using our products, you minimize the risk of costly and time-consuming downtime. Suitable products are presented below.
Contact your nearest Leine Linde office for further consultation on the best product choice for your specific machines and system.
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1. Pulping & wet end
The pulp-making operating conditions are wet, humid, and can vary a great deal in temperature. Robust and durable machine components are necessary, and when you need precision, the encoders from Leine Linde do their job perfectly. Get absolute position feedback for automated processes or control the opening of the pulp distributor by incremental encoders measuring speed and number of turns of the opening screw. Ensure a smooth conveyor and feeding system as well as equal quantities of pulp for uniform bales.
Industrial 600 series
Absolute position encoders with fieldbus and serial interfaces for automated processes.
Robust 500 series
Versatility in a small encoder with a large performance.
Heavy duty 800 series
Long-lasting maintenance-free incremental encoders. Made for demanding automation.
ADS Uptime™
Encoders with built-in ADS Uptime™ will enable monitoring the most relevant data from rotary installations and motors.
Compact 700 series
Enduring encoders in a compact format for minimum build length where space is limited.
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2. Wet press section
Throughout the Fourdrinier process where excess water is eliminated, it is of utmost urgency to ensure the stability and smoothness in operation of the motors for perfect wire speed. Getting precise and high-resolution information from the encoders is essential for process control. Vibrations, heat, and chemicals are part of the process, which reliable encoders can withstand.
Industrial 600 series
Absolute position encoders with fieldbus and serial interfaces for automated processes.
Heavy duty 800 series
Long-lasting maintenance-free incremental encoders. Made for demanding automation.
FSI 800 - Safety for drives
FSI 850 and FSI 862 are safe incremental encoders for drives, with slip-free mounting solutions for both shafts and hollow shafts.
ADS Uptime™
Encoders with built-in ADS Uptime™ will enable monitoring the most relevant data from rotary installations and motors.
Compact 700 series
Enduring encoders in a compact format for minimum build length where space is limited.
Robust 500 series
Versatility in a small encoder with a large performance.
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3. Dryer section
The conditions in the dryer section can be very hot and humid, both from the paper product and from the steam used to heat the drying cylinders. The speed of the rollers and cylinders must slow down progressively by each drying section, because the paper will shrink as it dries. Leine Linde encoders supply the feedback needed for precise control in the dryer section.
Bearingless 2000 series
Big hollow shaft incremental encoders, made for mounting directly on large rotating shafts. Can be equipped with one or two sensor heads.
FSI 800 - Safety for drives
FSI 850 and FSI 862 are safe incremental encoders for drives, with slip-free mounting solutions for both shafts and hollow shafts.
Heavy duty 800 series
Long-lasting maintenance-free incremental encoders. Made for demanding automation.
ADS Uptime™
Encoders with built-in ADS Uptime™ will enable monitoring the most relevant data from rotary installations and motors.
Industrial 600 series
Absolute position encoders with fieldbus and serial interfaces for automated processes.
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4. Finishing section
The paper passes through a calender where steel cylinders at a precisely determined width apart ensure that the paper thickness is consistently even. Coating is sometimes a part of the process in the finishing section.
In the finishing section the system has to handle heavy weight, shock, vibrations and strain in a dusty environment. The speed of rolls, drums and reels must be controlled in a very exact manner, in a demanding environment. This is where the industrial and heavy-duty Leine Linde encoders excel by providing precise and reliable feedback with a minimum of required maintenance.
Robust 500 series
Versatility in a small encoder with a large performance.
Heavy duty 800 series
Long-lasting maintenance-free incremental encoders. Made for demanding automation.
ADS Uptime™
Encoders with built-in ADS Uptime™ will enable monitoring the most relevant data from rotary installations and motors.
FSI 800 - Safety for drives
FSI 850 and FSI 862 are safe incremental encoders for drives, with slip-free mounting solutions for both shafts and hollow shafts.
Compact 700 series
Enduring encoders in a compact format for minimum build length where space is limited.
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5. Winding and cutting section
When the paper is formed and all the parameters are defined, then the sheet is wound onto a series of steel cores, which press against a pope reel. This make sure that the paper is wound at the right tension onto each core.
Frequently, the paper line creates a jumbo reel containing kilometers of length of paper sheet with a precise width and weight. Then the paper is switched from one reel to the next one which requires a cross-cutting process where absolute position and speed monitoring is needed.
If a certain width is required, this can also mean extra cutting and rewinding.
ADS Uptime™
Encoders with built-in ADS Uptime™ will enable monitoring the most relevant data from rotary installations and motors.
Premium 900 series
The 900 series platform manages complex position feedback and can be equipped with a built-in functionally safe controller and functionally safe limit switches (FSI 900).
Heavy duty 800 series
Long-lasting maintenance-free incremental encoders. Made for demanding automation.
Compact 700 series
Enduring encoders in a compact format for minimum build length where space is limited.
Robust 500 series
Versatility in a small encoder with a large performance.
Industrial 600 series
Absolute position encoders with fieldbus and serial interfaces for automated processes.
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6. Sheet cutting or packaging
After winding and cutting, the finished paper rolls are moved to sheet cutting or to the packaging station for wrapping and packaging that will protect from damage during transport and storage. Encoders with built-in functional safety are especially useful in operations that involve moving or handling heavy paper rolls.
Robust 500 series
Versatility in a small encoder with a large performance.
Heavy duty 800 series
Long-lasting maintenance-free incremental encoders. Made for demanding automation.
FSI 800 - Safety for drives
FSI 850 and FSI 862 are safe incremental encoders for drives, with slip-free mounting solutions for both shafts and hollow shafts.
Industrial 600 series
Absolute position encoders with fieldbus and serial interfaces for automated processes.
FSI 900 series
The FSI 900 series and FSI 900 YAWMO are encoders with integrated functionally safe limit switches and user-configuration software. Connect the relays for example to power off and brake activation.
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a. Secure your uptime with encoder diagnostics
Encoders with condition monitoring functionalities, enable predictive maintenance for problem-free operation. They can also provide relevant information about potential sources of failure, which otherwise would risk affecting the production unit as a whole.
ADS Uptime™
Encoders with built-in ADS Uptime™ will enable monitoring the most relevant data from rotary installations and motors.
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b. Gateways that simplify system integration
Our encoders and gateways are available with a wide range fieldbus interfaces and communication protocols, making them easy to integrate in your process control system.
Industrial 600 series
Absolute position encoders with fieldbus and serial interfaces for automated processes.
Premium 900 series
The 900 series platform manages complex position feedback and can be equipped with a built-in functionally safe controller and functionally safe limit switches (FSI 900).
Encoders for use with gateways
Use an encoder with a separate gateway to get a flexible installation, using your desired communication protocol, where the encoder can easily be exchanged without interrupting the bus. In addition, gateway encoders usually tolerate high temperatures better.
Gateways
Available gateways provide communication using for example CANopen, EtherNet/IP, PROFIBUS and PROFINET. All gateways are listed in our accessories list.
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c. Functional safety using encoder relay output
Implement functional safety compliant with the European Machinery Directive with encoder safety relays connected directly to the emergency stop loop or directly to selected braking functions.
FSI 800 - Safety for drives
FSI 850 and FSI 862 are safe incremental encoders for drives, with slip-free mounting solutions for both shafts and hollow shafts.
FSI 900 series
The FSI 900 series and FSI 900 YAWMO are encoders with integrated functionally safe limit switches and user-configuration software. Connect the relays for example to power off and brake activation.
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d. Ex approved encoders
In potentially explosive atmospheres, for example when chemicals and paints with sensitive substances are involved, use an ATEX or IECEx rated encoder for zones 1/21, available as both absolute and incremental encoders.
Absolute Ex approved encoders
Robust, absolute encoders that work well also when subjected to vibrations, moisture, salt water, dirt, heat and cold, or shock from strong mechanical forces. Available with hollow or solid shaft.
Incremental Ex approved encoders
Incremental encoders that use High-Current HTL (HCHTL) signals for long distance transmission. Model 841 is available with a optional diagnostic system (ADS Classic).
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