The HEIDENHAIN KCI 419 Dplus rotary encoder for theelevators of tomorrow

TECHNOLOGY REPORT

Two-dimensional was yesterdayThe HEIDENHAIN KCI 419 Dplus rotary encoder for the elevatorsof tomorrow

What if an elevator rotary encoder could also provide brake monitoring?
The new KCI 419 Dplus offers all of these capabilities in a single encoder:
Motor feedback

Two-dimensional was yesterday

Brake release monitoring
Wear indication data
Temperature monitoring

In the near future, microswitches will no longer be needed for brake release monitoring. That’sbecause the new HEIDENHAIN KCI 419 Dplus rotary encoder for elevators provides not only position feedback for motor control but also additional data for brake and temperature monitoring.

Digital data transmission

The flawless operation of brakes is a key safety characteristic of elevators. Currently, elevator brakes are monitored bymeans of separate microswitches. They are installed for brake release monitoring and cause significant cost and effort bothprior to and during elevator operation. This includes cost and effort for the following:
Procurement and storage
Installation and cabling
Maintenance and adjustment

Your benefits:You no longer need additional microswitches for brake monitoring, thus saving all the cost and effort normallyassociated with them ou benefit from improved remote monitoring and predictive maintenance capabilities
YImplementation is easy and economical with the EnDat Master MiniTECHNOLOGY REPORT
23

Intelligent integration of brake release monitoring
In addition to transmitting rotational position values, the KCI 419 Dplus inductive rotary encoder for elevators also measures
the amount of axial travel. When mechanically coupled with the armature plate of the brake, the KCI 419 Dplus can detect
the brake stroke. Based on these data, the subsequent electronics can derive not only the motor feedback but also thefollowing safety brake statuses:

Releases properly

Releases on one side only:
one brake is malfunctioning

4

Releases properly, but increased
armature plate travel indicates wear

Engages securely

5

Greater safety through temperature monitoring and self-diagnosis

Because all of these parameters are transmitted on a single cable via the purely digital EnDat 2.2 interface, overall system

The new KCI 419 Dplus considerably enhances availability and safety thanks to temperature monitoring and comprehensive

cabling is greatly simplified. Further benefits include improved remote monitoring and predictive maintenance capabilities.

online self-diagnosic capabilities. By virtue of its direct proximity to the motor and brake, the KCI 419 Dplus elevator rotary
encoder provides meaningful temperature monitoring data without additional sensors or cabling. These temperature data
can then be used to infer the occurrence of malfunctions.

In addition to these completely new innovations, the KCI 419 Dplus also features all of the familiar strengths of classic
rotary encoders from HEIDENHAIN. Its inductive scanning method is highly immune to contamination and vibration, and isrenowned for its operational reliability.

TECHNOLOGY REPORT
67

Two-dimensional measurement is now a thing of the past:
The new KCI 419 Dplus elevator rotary encoder delivers
motor feedback, axial distance values for brake release
monitoring, and temperature data for brake monitoring.

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1302332-20 · 1 · 10/2019 · H · Printed in Germany