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Comprehensive. Flexible. 
For the highest demands. 

The WEARwatcher is an accelerometer with an integrated analysis unit that enables condition monitoring of the elevator's key physical parameters. Problems and anomalies are detected by the WEARwatcher before they negatively impact the elevator system. Thanks to this condition-based assessment, a technician is often only needed when corresponding indications are present.

Lifting Elevators into the Cloud

WEARwatcher MPU

Integrated analysis unit with accelerometer

WEARwatcher Satellite PEU

Evaluation unit for external sensor data, communication with WEARwatcher MPU

APS Sensor

Determining the exact positioning

APS Codeband

Determining the exact positioning

cable load sensor

Tension measurement of the ropes

Door switch

Determining the door status

Current sensor door drive

Current measurement for analysis the doors

Current sensor drive

Current sensor drive – current measurement for drive analysis, especially in combination with our free separate Windows PC software.

Water/Leakage Sensor

leakage

WEARwatcher MPU

Integrated analysis unit with accelerometer

WEARwatcher Satellite PEU

Evaluation unit for external sensor data, communication with WEARwatcher MPU

APS Sensor

Determining the exact positioning

APS Codeband

Determining the exact positioning

cable load sensor

Tension measurement of the ropes

Door switch

Determining the door status

Current sensor door drive

Current measurement for analysis the doors

Current sensor drive

Current sensor drive – current measurement for drive analysis, especially in combination with our free separate Windows PC software.

Water/Leakage Sensor

leakage

Key Features

Breakdown
probabilit

Within the first few weeks of operation, the WEARwatcher builds up a comprehensive database on which it continuously recalculates the current probability of failure. These mathematical operations take place within the device itself, and the result is visualized as the probability of failure in the cloud dashboard.

Duty cycles

Based on the elevator trips taking place, the WEARwatcher continuously calculates the system's utilization. The actual travel time is compared to the total operating time (e.g., a value of 10% means that the elevator is actually in use for 6 minutes every hour).

Ride distance

For each trip, the distance traveled is measured and displayed in the cloud dashboard. The total mileage is also calculated from the accumulated data.

Drive time

For each trip, the actual trip duration is determined and stored in the database for further analysis.

Door movements

Depending on whether it involves internal or external calls, parking trips, or similar actions, the number of door cycles per elevator journey varies. The WEARwatcher records and monitors these door cycles to detect and report misuse as well as technical malfunctions.

Levelling precision

When entering a floor, the flushness is specifically monitored and recorded with millimeter precision. This is done for every movement. Additionally, the WEARwatcher also monitors compliance with the requirements of EN81-20 section 5.12.1.1.4 regarding stopping accuracy, readjustment accuracy, and corrective movements ("catch-up").

ø Speed

During movement at a constant speed within each trip, this speed is determined, monitored with limit values ​​and displayed in the cloud dashboard.

Ride quality

With the evaluation rules of the ISO 8100-34 The system's driving quality parameters are calculated and weighted, so that a current driving quality assessment of the system is constantly available and visualized.

Number of rides

The cloud dashboard also provides a total trip counter.

Load conditions

In addition to providing information on the precise load status of each individual journey and monitoring specific load conditions (empty load, overload, etc.), the WEARwatcher also generates statistical data on the average load status, which can be incorporated into traffic analysis. Furthermore, the WEARwatcher continuously determines the empty cabin weight, taking into account friction effects, suspension variations, and balancing chains and cables.

Door reversion detection

Incomplete door cycles (door attempts to close but reopens before reaching the closed position) are detected by the WEARwatcher, displayed, and reported as malfunctions if desired.

Shaft efficiency

The WEARwatcher continuously calculates the current shaft efficiency (see, for example, VDI 4707) and thus determines the friction losses between car guides and the guide rails.

Guides

Continuous vibration and jerk analysis, as well as frequency monitoring, detects specific aspects of the guide rail condition and reports any faults. This includes insufficient lubrication, inadequately machined rail joints, catch marks, etc. The position of these faults is recorded and reported with millimeter precision.

Drive

Many causes of wear and tear and malfunctions in the drive system (such as problems with the frequency converter, problems in the gearbox, etc.) are transmitted to the elevator car via the load-bearing elements.

Vibrations

The WEARwatcher vibration sensors are mounted on the elevator car. WEARwatcher satellites can also be used to monitor other parts of the system (such as the machine frame) with vibration sensors. The analyses specifically search for problems and signs of wear affecting the drive, guides, and doors (differentiated between shaft and car doors) and report these via the cloud.

Twisted ropes

The WEARwatcher uses individual rope load measurement to detect twisted ropes, which can lead to a massive reduction in rope lifespan.

UCM warnings

UCM situations are detected by the WEARwatcher (independently of the actual plant control) and permanently stored and reported for forensic purposes.

Sheaves wear

The WEARwatcher uses individual rope load measurement to detect the condition of the traction sheave by indirectly measuring the diameters of all individual sheave grooves. This allows for the detection and reporting of deviations between these diameters (worn grooves). These varying diameters lead to significant changes in rope tension during operation, resulting in substantial rope wear. Consequently, the rope's potential bending cycles are often reduced to a fraction of its nominal value.

Hoistway doors

Every door movement is evaluated using comprehensive vibration and frequency analyses. This provides a picture of the door's condition and, above all, of any wear and/or contamination on the guides and rollers. By assigning the doors to specific floors and conducting subsequent trend analyses, the WEARwatcher can pinpoint whether problems are occurring at particular cabin or shaft doors and report these specifically to the cloud.

Car doors

Every door movement is evaluated using comprehensive vibration and frequency analyses. This provides a picture of the door's condition and, above all, of any wear and/or contamination on the guides and rollers. By assigning the doors to specific floors and conducting subsequent trend analyses, the WEARwatcher can pinpoint whether problems are occurring at particular cabin or shaft doors and report these specifically to the cloud.

Wear of rope

The service life of an elevator cable can vary drastically under identical design conditions if the cable tension is not properly adjusted or monitored. Calculated service lives of, for example, 10 years can quickly be reduced to just 1 year of actual operating time. Conversely, cable tension can be used to predict service life. The WEARwatcher continuously monitors cable tension and immediately reports critical situations. Additionally, the WEARwatcher provides each user with a digital tool for easy, quick, and precise cable adjustment on any Wi-Fi-enabled device.

Emergency stop analysis

Emergency stops (regardless of whether they are initiated by the safety device or the machine brakes) are automatically detected by the WEARwatcher and reported to the cloud. Information about the cabin's position in the shaft and the current load is also reported. For forensic purposes, this data, along with maximum deceleration and forces, is also available in the cloud. Advanced analysis options are available via separate Windows PC software.

grooves

The WEARwatcher uses individual rope load measurement to detect the condition of the traction sheave by indirectly measuring the diameters of all individual sheave grooves. This allows for the detection and reporting of deviations between these diameters (worn grooves). These varying diameters lead to significant changes in rope tension during operation, resulting in substantial rope wear. Consequently, the rope's potential bending cycles are often reduced to a fraction of its nominal value.

Traction monitoring

The WEARwatcher is capable of continuously monitoring the traction performance of the elevator system. This allows critical operating conditions to be identified even before the next scheduled inspection. Furthermore, comprehensive automatic trend algorithms reliably report incipient wear on traction sheaves and ropes, as well as lubrication issues, contamination of the propellant with dirt, etc.

Vandalism

The WEARwatcher detects atypical driving movements (e.g., bumps or jolts) based on the recorded acceleration and vibration data and interprets them as possible vandalism.

Mantrap

Based on the absence of door movements after the journey ends, unusually long dwell times on a floor, or possibly an emergency stop, the WEARwatcher identifies possible people trapped inside the vehicle.

Elevator Rollback

The WEARwatcher triggers a rollback alert if the cabin is detected rolling backward during acceleration – specifically when the cabin is empty and rolling downwards, or loaded and rolling upwards. This typically indicates a failure of the Load measurement or incipient problems in the frequency converter.


Lifting Escalators into the Cloud

Cloud-controlled escalator monitoring!

Henning WEARwatcher It can not only be used for elevator monitoring, but is also available as a variant for escalators. Escalators are subject to particular stresses. They are usually in constant use and have to transport a large number of people every day. A breakdown has a massive impact on the flow of people in the affected building.

With the escalator version of the WEARwatcher You can query specific properties such as handrail or chain tension, step breakage, direction of travel, or vibration analyses via the cloud. Naturally, in the event of an imminent danger, such as an emergency stop, the responsible technicians will be notified immediately.

WEARwatcher MPU

Integrated analysis unit with accelerometer

WEARwatcher Satellite PEU

Evaluation unit for external sensor data, communication with WEARwatcher MPU

Load sensor

Voltage measurement of handrail and drive chain

Load sensor

Voltage measurement of handrail and drive chain

I/O Expander

Digital I/O Module

I/O Expander

Digital I/O Module

Water/Leakage Sensor

Water leak

Current sensor drive

Current measurement for analysis the drive

Key Features

Probability of failure

Within the first few weeks of operation, the WEARwatcher builds up a comprehensive database on which it continuously recalculates the current probability of failure. These mathematical operations take place within the device itself, and the result is visualized as the probability of failure in the cloud dashboard.

Ride quality

The evaluation criteria of ISO 8103-9 are used to calculate and weight the driving quality parameters of the system, so that a current driving quality assessment of the system is constantly available and visualized.

Drive time

For each trip, the actual trip duration is determined and stored in the database for further analysis.

total distance

The WEARwatcher records the distance traveled on the escalator.

Number of rides

The cloud dashboard also provides a total trip counter.

Emergency stop switch

A counter records the number of emergency stop activities and displays them in the overview.

Handrail speed

The WEARwatcher indirectly determines the correct handrail speed and warns of any errors.

Direction of travel

The direction of travel is detected via two sensors and displayed in the cloud.

Speed ​​levels

The WEARwatcher indirectly determines the step speed and warns of any errors.