Product Overview

Rotary Encoders
for the Elevator
Industry

06/2020

Rotary encoders for the elevator industry

The demands on elevator technology havebeen growing steadily in recent years,
calling for higher speeds, higher shafts,
smaller footprints, and lower operating
costs. Also crucial is optimal passenger
comfort, requiring smooth starts, constantaccelerations, gentle braking, and precise
arrival for a pleasant and comfortable ride.
A key role in meeting these requirements
is played by the drive system, with an
unbroken trend towards gearless motor
systems. These systems offer a number of
economic and environmental benefits:• Elevator systems featuring low vibrationand noise• Reduced space requirements thanks tomachine-room-less elevators (MRL)• Comfortable ride characteristics• Low energy consumption• Low maintenance and oil-free
Permanent-magnet synchronous motors
are often used due to their higher power
density. Depending on the control strategy,
these motors may require absolute position
feedback for proper rotor position control.
This feedback can be provided by anabsolute rotary encoder or an incremental
rotary encoder with commutation signals.
Most of these demanding drive systems
also require high-resolution rotary encoders
integrated into the control loop as position
encoders for measurement of the actualspeed. Absolute rotary encoders with thepurely serial EnDat 2.2 interface, as well as
incremental rotary encoders, are ideallysuited for this purpose. Rotary encoders
from HEIDENHAIN utilize optical or inductive
scanning principles. Radial or axial scanningis possible along the entire circumferenceor over a limited segment. Throughmechanical adaptation, rotary encoders
from HEIDENHAIN can be used for thefeedback control of various motor designs
in the elevator industry, such as internal,external, or disc motors.
To meet the high functionality and reliability
requirements, and to enable intelligent
system integration, rotary encoders forelevator drive systems must possess
highly specialized characteristics. This isalso true of rotary encoders for otherelevator technology applications, such as
digital shaft copying systems and door
motor control.

2Overview
Rotary encoders for elevator motor control

The HEIDENHAIN product portfolio offers
solutions specifically designed for elevator
technology. The excellent signal quality
and high accuracy of HEIDENHAIN rotary
encoders ensure high-quality speed control
and exact positioning. Technical details suchas rigid shaft connections, high mechanicalnatural frequencies for rotary encoder
couplings, wider run-out tolerances, easy
mounting, and, for absolute rotary encoders,high-performance bidirectional interfaces(EnDat), are just a few examples ofHEIDENHAIN quality.

AEF/ECN/ERN 1300 series (PCB connector)
and ECN/ERN 400 (cable connection)
With expanding ring coupling (with a high naturalfrequency of the stator coupling)

AEF/ECN/ERN 1300 series (PCB connector)
and ECN/ERN 400 (cable connection)
With plane-surface coupling (wider run-out andmounting tolerances)

Encoders with an EnDat interface (purelydigital or analog signals) permit the retrievalof encoder parameters and predefined
motor and brake parameters from aninternal EEPROM. This can shorten setup
times and prevent input errors during theconfiguration of drive system parameters.
EnDat encoders also permit electronic
position adjustment (zeroing), allowing theencoder’s absolute position value to bealigned with the orientation of the motor’srotating field and eliminating the needfor complicated mechanical alignment.
Depending on the encoder, diagnostic
functionality such as temperature evaluationand valuation numbers are available forassessing the encoder’s functional reserves.
Upon a change in critical values, preventive
measures can be taken to avoid anunscheduled maintenance interruption ofthe elevator.

ECN/ERN 100 series
Hollow shafts with inside diametersof up to 50 mm

ECI 4000 series
Featuring a hollow shaft with an inside diameterof up to 180 mm and wide mounting tolerances

The flawless operation of brakes is a key
safety characteristic of elevators. Brakemonitoring is usually performed by separate
microswitches. These microswitches are
installed specifically for brake release
monitoring and incur considerable costand effort both before and during operation.
The KCI 419 Dplus rotary encoder lets
you dramatically reduce these costs andincrease operational safety at the sametime. Along with rotational position feedback,the KCI 419 Dplus inductive rotary encoder
delivers axial motion feedback for direct
measurement of the brake stroke. Basedon this feedback, the current brake status(released, applied, or malfunction) and thelevel of brake wear can be derived by thesubsequent electronics.

KCI 419 Dplus inductive rotary encoder
Provides additional feedback for axial motion,
as well as data for temperature monitoring

3

ERN incremental rotary encoders / AEF, ECN, ECI, and KCI absolute singleturn rotary encoders
ModelOutsidedia.1)

Shaft version

ERN 120
ERN 130
ERN 18087 mm

Hollow through IP64
shaft,¬ 20 mm,25 mm, 30 mm,38 mm, or50 mm

ECN 113
ECN 1252)

ERN 1321

58 mm

ERN 13262)

Taper shaft,¬ 9.25 mm,
1:10 taper

ERN 13812)

Protection Incremental
ratingsignals

Signal periods
per revolution

Absolute
positionvaluesPosition values
per rev.
Commutation

Brake stroke
monitoring

« TTL
« HTL
» 1 VPP

1000 to 5000–––

» 1 VPP

2048

EnDat01

8192 (13 bits)

–

–

–

EnDat2233 554 435(25 bits)–

1024 to 10000

–

–

–

1024, 2048,4096, or 8192

UVW

Three signals
for blockcommutation–

512, 1024, 2048,4096–2048» 1 VPPZ1 track for sine –commutation

2048

EnDat01

8192 (13 bits)––

EnDat2233 554 435(25 bits)–

8 388 608
(23 bits)

–

« TTL
ECN/
ERN 400:« TTL
IP64
AEF/ECN/ERN 1300:
IP40» 1 VPP» 1 VPPERN 1387
ERN 487
ECN 13133)
ECN 413
ECN 13253)
ECN 425–

AEF 13233)–

KCI 4194)

65 mm

12 mm

IP37–

–

EnDat22524 288 (19 bits)

0.5 mm to1.6 mm

ECI 11987 mm

30 mm, 38 mm, IP2050 mm––

EnDat22524 288 (19 bits)–

174 mm,262 mm

Hollow throughshaft,¬ 90 mm,
180 mm––EnDat22

1 048 576
(20 bits)–3)

ECI 4010

1)

IP20Rotary encoder housing
Only in version with expanding ring coupling3)
Connection of an external temperature sensor in the motor is possible
4)
Output of additional temperature values (armature plate of the brake)
2)

4

Rotary encoders for digital shaft copying systems

Shaft copying is used to ensure jerk-freebraking and precise positioning of theelevator car. These systems measure thecar’s position and forward it to the control.
Incremental rotary encoders and especiallyabsolute rotary encoders from HEIDENHAIN
are ideal for this application. These encoders
enable digital shaft copying with clear
benefits for control technology andinstallation.

The key advantage of using absolutemultiturn rotary encoders for position
detection is the continuous availability of
the car’s absolute position (even after apower failure). Since actual position values
are available at all times, the car canapproach its destination rapidly.

A bearing assembly with an EQN 400 isoffered specifically for shaft copying.
Elevator car position is often measured bymeans of toothed belts and deflection
pulleys. Thanks to the bearing assembly,
the high resulting forces are decoupledfrom the precision bearing of the rotaryencoder, thereby preventing encoder
overload.

Bearing assembly with the EQN 400
Shaft load up to:
Axial150 N
Radial 350 N

EQN 400 series

EQN absolute multiturn rotary encoders with a mounted stator coupling
ModelOutsidedia.1)

Shaft version

Protection Incremental
ratingsignals

Signal periods
per revolution

Absolute
positionvaluesPositionvalues perrevolution

EQN 42558 mm

Blind hollow
shaft or hollow
through shaft,¬ 12 mmIP64

512 or 2048

EnDat018192 (13 bits) 4096

512

SSI512 or 2048

EnDat01512SSI

2048

EnDat22EQN 4371)

58 mm

Blind hollow
shaft or hollow
through shaft,¬ 12 mm» 1 VPP

IP66

IP64–

33 554 432(25 bits)

Revolutions

4096

Rotary encoder housing

5OverviewRotary encoders for door motors

In high-rise buildings with large elevator
capacities and high passenger traffic,
shorter stopping times are an importantgoal, allowing more passengers to betransported. A critical factor in handling abuilding’s passenger traffic is proper
elevator door operation.

Fast and precise opening and closing withminimal noise requires servo-controlled
door motors. Compact rotary encoders
from HEIDENHAIN are particularly well
suited for speed and position feedback.
Thanks to a mounting diameter of less than
40 mm, they are also ideal for limited
space requirements.

ERN 1023

ERN 1123

ECI/EBI 1100 series

ERN incremental rotary encoders / ECI absolute singleturn rotary encoders / EBI absolute multiturn rotary encoders
ModelOutsidedia.1)

Shaft version

Protection Incremental
ratingsignals

Signal periods
per revolution

Absolutepositionvalues

Position values
per revolution

Revolutions2)

ERN 1020
ERN 1030
ERN 108036.5 mm

Blind hollowshaft, ¬ 6 mm

IP64

« TTL
« HTL
» 1 VPP

100 to 3600–––ERN 1023

35 mm

IP64

« TTL

500 to 2048

UVWThree signals
for blockcommutation–––

EnDat22262 144 (18 bits)–IP00

ERN 1123
ECI 1118

37 mm

IP00

EBI 11351)
2)

6Rotary encoder housing
By means of battery-buffered revolution counter

65 536

HEIDENHAIN measuring equipment

PWM 21The PWM 21 phase angle measuring unit,
in conjunction with the included ATSadjustment and testing software, provides
an adjustment and testing package for thediagnosis and adjustment of HEIDENHAIN
encoders.

PWM 21
Encoder input• EnDat 2.1 or EnDat 2.2 (absolute value with or without
incremental signals)• DRIVE-CLiQ• Fanuc Serial Interface• Mitsubishi high speed interface• Yaskawa Serial Interface• SSI• 1 VPP/TTL/11 µAPP

InterfaceUSB 2.0

Supply voltage

AC 100 V to 240 V or DC 24 V

Dimensions

258 mm x 154 mm x 55 mm
ATSLanguages

German or English (selectable)

Functions• Position display• Connection dialog• Diagnostics• Mounting wizard for the EBI/ECI/EQI, LIP 200, LIC 4100,
and others• Additional functions (if supported by the encoder)• Memory contents

System requirements
and recommendations

PC (dual-core processor > 2 GHz)
RAM > 2 GB
Operating system: Windows XP, Vista, 7 (32-bit/64-bit), 8, 10
200 MB of available hard-disk space

For more information, see the PWM 21,
ATS Software Product Information
document.

DRIVE-CLiQ is a registered trademark of Siemens AG

PWT 101
The PWT 101 is a testing device for thefunctional testing and adjustment of
incremental and absolute HEIDENHAIN
encoders. Thanks to its compact andrugged design, the PWT 101 is ideal forportable use.

PWT 101
Encoder input
only for HEIDENHAIN
encoders• EnDat• Fanuc Serial Interface• Mitsubishi high speed interface• Panasonic Serial Interface• Yaskawa Serial Interface• 1 VPP with Z1 track• 1 VPP• 11 µAPP• TTL

Display

4.3-inch touchscreen

Supply voltage

DC 24 VPower consumption: max. 15 W

Operating temperature

0 °C to 40 °C

Protection EN 60529

IP20Dimensions

Approx. 145 mm x 85 mm x 35 mm

7Further information

For detailed information, including generaltechnical descriptions, mounting information,
specifications, and exact dimensions,please refer to the brochures and­Product Information documents, or visit
www.heidenhain.de.

Product Information
AEF 1323

Produktinformation

AEF 1323
Absoluter Einbau-Drehgeber
zur Antriebsregelung vonAufzügen

Contents:
Absolute rotary encoder
for integration inelevator servo drives

Product Information
ECN 413
ECN 425
ERN 487
Produktinformation

ECN 413
ECN 425
ERN 487
Drehgeber zur Antriebs­
regelung von Aufzügen(Schutzart IP64)

Juni 201703/2018

Product Information
KCI 419 Dplus

Product Information
ECN 1313
ECN 1325
ERN 1387
Produktinformation

ECN 1313
ECN 1325
ERN 1387
Einbau-Drehgeber mit
Planflächenkupplung zur
Antriebsregelung vonAufzügen

Juli 2017

Contents:
Rotary encoders
for elevator motor
control

Produktinformation

KCI 419 Dplus
Absoluter induktiver
Drehgeber mit Zusatzfunktion
Abstandsmessung inaxialer Richtung

Drehgeber

11/2017

Brochure
Encoders forServo Drives
Messgeräte fürelektrische Antriebe

Schnittstellenvon HEIDENHAINMessgeräten

Brochure
Cables andConnectors
Kabel undSteckverbinder

04/2018

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587718 · 09 · A · 02 · 06/2020 · PDF

Contents:
Rotary encoders
Angle encoders
Linear encoders

11/2017

BrochureInterfacesof HEIDENHAIN
Encoders

For detailed descriptions of all available
interfaces and cables, as well as generalelectrical information, please refer to thebrochures.

Contents:
Rotary encoderwith axial distancemeasurement

10/2019

Brochure
Rotary Encoders
Contents:
ERN, ROD
incremental rotary
encoders
ECN, EQN, ROC, ROQ
absolute rotary
encoders

Contents:
Rotary encoders forelevator motor control(IP64 degree ofprotection)