Product Information

RON 200
RON 700
RON 800
RPN 800
Incremental Angle Encoders
with Integral Bearing,
Hollow Shaft andStator Coupling

02/2023

RON 200 series• Integrated stator coupling• Hollow through shaft (¬ 20 mm)• System accuracy: ±2.5” and ±5”

Incremental
RON 275

System accuracy

±2.5”

±5”

D1

¬ 20H6 e¬ 20H7 e

D2¬ 30H6 e¬ 30H7 e

D3¬ 20g6 e¬ 20g7 e

T

0.01

0.02

RON 275

RON 285

Measuring standard

DIADUR circular scale with incremental track

Line count

18 000

System accuracy±5”

Position error persignal period

 ±0.7”

Interface« TTL

Integrated interpolation*
Output signals per rev.

5-fold90 000

Reference mark*One

Cutoff frequency –3 dB
Output frequency
Edge separation a–
 250 kHz 0.96 µs–
 1 MHz 0.22 µs

 180 kHz––

Elec. permissible speed

 166 rpm

 333 rpm

–Electrical connection*

Cable (1 m), with or without 12-pin M23 coupling (male)

Cable length1)

 50 mSupply voltage

DC 5 V ±0.5 V/ 150 mA (without load)

Shaft

Hollow through shaft D = 20 mm

Mech. permissible speed 3000 rpm

Starting torque 0.08 Nm at 20 °C

Moment of inertia of rotor

73.0 · 10–6 kgm2

Permissible axial motionof measured shaft±0.1 mmNatural frequency

 1200 Hz

Vibration 55 Hz to 2000 Hz
Shock 6 ms

 100 m/s (EN 60068-2-6)
 200 m/s2 (EN 60068-2-27)

Operating temperature

Frequent flexing:
Stationary cable:

Protection EN 60529

IP64Mass

 0.8 kg

RON 287±2.5”» 1 VPP
10-fold
180 000–RON 2xx: One
RON 2xx C: Distance-coded 150 m2–10 °C to 70 °C–20 °C to 70 °C

0 °C to 50 °C* Please select when ordering
1)With HEIDENHAIN cable2)
Range includes mounting tolerances and thermal expansion; no dynamic movement permitted

Radial cable (can also be used axially)
A = Bearing of mating shaft
k = Required mating dimensions
1 = Position of the reference mark signal ±5°
2 = Direction of shaft rotation for ascending position values
3 = Accessory: ring nut (ID 336669-03)
4 =	Stated tolerance contains mounting tolerances and thermal expansion;
no dynamic movement permitted

2

Product Information RON 200/700/800, RPN 800    02/2023

Product Information RON 200/700/800, RPN 800    02/20233RON 785• Integrated stator coupling• Hollow through shaft (¬ 50 mm)• System accuracy: ±2”

Incremental
RON 785
Measuring standard

DIADUR circular scale with incremental track

Line count

18 000

System accuracy±2”

Position error per
signal period

 ±0.7”

Interface» 1 VPP

Reference mark*RON 785: One
RON 785 C: Distance-coded

Cutoff frequency –3 dB

 180 kHzElectrical connection*

Cable (1 m), with or without 12-pin M23 coupling (male)

Cable length1)

 150 mSupply voltage

DC 5 V ±0.5 V/ 150 mA (without load)

Shaft

Hollow through shaft D = 50 mm

Mech. permissible speed

 1000 rpm

Starting torque 0.5 Nm at 20 °C

Moment of inertia of rotor

1.05 · 10–3 kgm2

Permissible axial motionof measured shaft±0.1 mmNatural frequency

 1000 Hz

Vibration 55 Hz to 2000 Hz
Shock 6 ms

 100 m/s (EN 60068-2-6)
 200 m/s2 (EN 60068-2-27)

Operating temperature

0 °C to 50 °C

Protection EN 60529

IP64Mass

 2.5 kg2

* Please select when ordering1)
With HEIDENHAIN cable2)
Range includes mounting tolerances and thermal expansion; no dynamic movement permitted

Radial cable (can also be used axially)
A = Bearing of mating shaft
k = Required mating dimensions
1 = Position of the reference mark signal ±5°
2 = Shown rotated by 45°
3 = Direction of shaft rotation for ascending position values
4 = Accessory: ring nut (ID 336669-15)
5 =	Specified tolerance includes mounting tolerances and thermal expansion;
no dynamic motion permitted

4

Product Information RON 200/700/800, RPN 800    02/2023

Product Information RON 200/700/800, RPN 800    02/2023

5

RON 786/RON 886/RPN 886• Integrated stator coupling• Hollow through shaft (¬ 60 mm)• System accuracy: ±1” or ±2”

Incremental
RON 786

RON 886

RPN 886

Measuring standard

DIADUR circular scale with incremental track

Line count*

18 00036 00036 000

System accuracy

±2”

±1”

Position error per
signal period

18 000 lines:  ±0.7”
36 000 lines:  ±0.35”

 ±0.35”

Interface» 1 VPP

Reference mark*RON x86: One
RON x86 C: Distance-coded

One

Cutoff frequency–3 dB				–6 dB

 180 kHz 800 kHz 1300 kHz

Electrical connection*

Cable (1 m), with or without 12-pin M23 coupling (male)

Cable length1)

 150 mSupply voltage

DC 5 V ±0.5 V/ 150 mA (without load)

Shaft

Hollow through shaft D = 60 mm

Mech. permissible speed

 1000 rpm

Starting torque 0.5 Nm at 20 °C

Moment of inertia of rotor

1.20 · 10–3 kgm2

Permissible axial motionof measured shaft

 ±0.1 mm

Natural frequency

 1000 Hz

Vibration 55 Hz to 2000 Hz
Shock 6 ms

 100 m/s (EN 60068-2-6)
 200 m/s2 (EN 60068-2-27)

Operating temperature

0 °C to 50 °C

Protection EN 60529

IP64Mass 2.5 kg290 000( 180 000 signal periods)

 ±0.1”

DC 5 V ±0.5 V/ 250 mA(without load)

 500 Hz2
 50 m/s (EN 60068-2-6)
 200 m/s2 (EN 60068-2-27)* Please select when ordering1)
With HEIDENHAIN cable2)
Range includes mounting tolerances and thermal expansion; no dynamic movement permitted

Radial cable (can also be used axially)
A = Bearing of mating shaft
k = Required mating dimensions
1 = Position of the reference mark signal ±5°
2 = Shown rotated by 45°
3 = Direction of shaft rotation for ascending position values
4 = Accessory: ring nut ID 336669-15
5 = Stated tolerance includes mounting tolerances and thermal expansion; no dynamic movement permitted

6

Product Information RON 200/700/800, RPN 800    02/2023

Product Information RON 200/700/800, RPN 800    02/2023

7

Mechanical design types and mounting
RON, RPN

Setup
The circular scale is rigidly affixed to thehollow shaft. The scanning unit rides on theshaft on ball bearings and is connected tothe housing with a coupling on the statorside. The stator coupling and the sealing
design compensate for axial and radial
mounting error to a high degree withoutrestricting accuracy or functionality. This
thereby simplifies mounting. During
angular acceleration of the shaft, the stator
coupling must absorb only the torqueresulting from friction within the bearing.
Angle encoders with stator coupling
therefore provide excellent dynamicperformance.
Mounting
The housing of the RON and RPN is firmly
connected to the mounting surface of themachine part by means of a mounting
flange and a centering collar.

Ring nuts for the RON and RPN
HEIDENHAIN offers special ring nuts for
RON and RPN angle encoders. Choose thetolerance of the shaft thread such that thering nut can be tightened easily, with asmall amount of axial play. This guarantees
that the load is evenly distributed on theshaft connection and prevents undesirable
forces on the encoder's hollow shaft.

Mounting aid

Ring nut

Mounting an angle encoder with a ring nut• RON and RPN shaft coupling
Shaft coupling with ring nut
The shaft is designed as a hollow
through shaft. For installation, the hollow
through shaft of the angle encoder isseated onto the machine shaft andfastened from the encoder’s front facewith a ring nut. The ring nut can be easily
tightened with the mounting aid.

*) Pitch diameter

Ring nut for
Hollow shaft ¬ 20 mm: ID 336669-03
Hollow shaft ¬ 50 mm: ID 336669-15
Hollow shaft ¬ 60 mm: ID 336669-11

Ring nutfor
Hollowshaft¬ 50
Hollowshaft
¬ 60

L1L2

D1

D2D3B

¬ 62±0.2¬ 55(¬ 49.052±0.075)¬ 49.469 (¬ 50.06) 1±0.059¬ 70±0.2¬ 65(¬ 59.052±0.075)¬ 59.469 (¬ 60.06) 1±0.059*) Pitch diameter

Front-face shaft coupling
Especially for rotary tables, it is often
helpful to integrate the angle encoder
into the table such that the encoder isaccessible when the rotor is lifted. The
hollow shaft is connected through thefront-face threaded holes by means ofspecial mounting elements made for thegiven design (not included in delivery). In
order to meet the radial and axial runout
requirements, the interior hole 1 andthe shoulder surface 2 must be used as
the mounting surfaces for the front-faceshaft coupling.

Example of connecting an encoder to the shaft face

PWW inspection tool for RON/RPN
angle encoders
The PWW makes it fast and easy to inspect
the most significant mating dimensions.
Its built-in measuring equipment measuresposition and radial runout, for example. It isbest suited for the shaft coupling with aring nut.
PWW for
Hollow shaft ¬ 20 mm: ID 516211-01
Hollow shaft ¬ 50 mm: ID 516211-02
Hollow shaft ¬ 60 mm: ID 516211-03

8Ring nut for hollow
shaft ¬ 20 mm

 

The RON and RPN angle encoders havean integral bearing, a hollow shaft anda stator-side coupling. The measured shaft
is directly connected to the shaft of theangle encoder.

Product Information RON 200/700/800, RPN 800    02/2023

Mounting tool for HEIDENHAIN ring nuts
The mounting aid is used to tighten thering nut. Its pins lock into the holes in thering nut. A torque wrench provides thenecessary tightening torque.
Mounting aid for ring nuts with
Hollow shaft ¬ 20 mm: ID 530334-03
Hollow shaft ¬ 50 mm: ID 530334-15
Hollow shaft ¬ 60 mm: ID 530334-11

Product Information RON 200/700/800, RPN 800    02/2023

Materials required for mounting theRON and RPN
The machine shaft and the fastening
components must be made of steel. Thematerial must exhibit a thermal coefficientof expansion Þtherm = 10 · 10–6 K–1 toÞtherm = 16 · 10–6 K–1.
Additionally, the material must meet thefollowing specifications:• For hollow-shaft connection
Rm  650 N/mm2
Rp0.2  370 N/mm2• For housing connection
Rp0.2  370 N/mm2

9Electrical connection» 1 VPP incremental signals« TTL incremental signals

Pin layout

Pin layout

12-pin M23 coupling

12-pin M23 connector

12-pin M23 coupling

12-pin M23 connector

15-pin D-sub connector
For HEIDENHAIN controls and IK 220

15-pin D-sub connector
For encoder or PWM 20

15-pin D-sub connector
For HEIDENHAIN controls and IK 220

15-pin D-sub connector
For encoder or PWM 20

Power supply

Incremental signals

Other signals

Power supply

Other signals
3)

122

10

115

68

1

3

4

97/

122

10115

68

1

3

47/

91

92

113

4

67

10125/8/13/15

14/

1

92

113

4

67

10

12

14

8/13/15

54

122

101

93

1114

7

5/6/8/15

13/4122

101

93

1114

7135/6/8153)

UPSensor1)
UP0VSensor
0V

A+A–B+B–

R+R–Vacant

UPSensor1)
UP0V

Sensor
0V

Ua1¢

Ua2£

Ua0¤

¥Vacant

VacantBrown/
GreenBlueWhite/
GreenWhiteBrown

GreenGray

Pink

RedBlack/Brown/
GreenBlueWhite/
GreenWhite

Brown

Green

Gray

Pink

RedBlack

Violet/Yellow

1)

Vacant Vacant
VioletYellow

Cable shield connected to housing; UP = Power supply voltage
Sensor: The sense line is connected in the encoder with the corresponding power line.
Vacant pins or wires must not be used!
1)
LIDA 2xx: vacant

www.heidenhain.com

Product Information RON 200/700/800, RPN 800    02/20231)

2)

Cable shield connected to housing; UP = Power supply voltage
Sensor: The sense line is connected in the encoder with the corresponding power line.
Vacant pins or wires must not be used!
1)
LIDA 2xx: vacant  /  2) ERO 14xx: vacant3)
Exposed linear encoders: conversion from TTL to 11 µAPP for the PWT, otherwise not assigned

DR. JOHANNES HEIDENHAIN GmbH
Dr.-Johannes-Heidenhain-Straße 583301 Traunreut, Germany +49 8669 31-0
 +49 8669 32-5061
info@heidenhain.de10

Incremental signals

1382219 · 00 · A · 02 · 02/2023 · PDF

This Product Information document supersedes all previous editions, which thereby
become invalid. The basis for ordering from HEIDENHAIN is always the Product
Information document edition valid when the order is placed.

More information:
Comply with the requirements described in the following documents to ensure correctand intended operation:• Brochure: Angle Encoders with Integral Bearing
591109-xx• Brochure: Interfaces of HEIDENHAIN Encoders
1078628-xx• Brochure: Cables and Connectors
1206103-xx
For brochures and Product Information documents, visit www.heidenhain.com.