Product Information

RCN 200
Absolute Angle Encoders
with Integral Bearing

07/2022

RCN 200• Integrated stator coupling• Hollow through shaft ¬ 20 mm• System accuracy: ±6” and ±8”• Fault exclusion for loosening of the mechanical connection is possible
RCN 21046

RCN 280

RCN 290 F

Measuring standard

DIADUR circular scale with absolute track and incremental track (2048 lines)

System accuracy*±6”; ±8”

RCN 290 M

Position error per signal period  ±1.5”1122.5°

kShaft coupling with ring nut and catch
With mechanical fault exclusion(for other dimensions, see without fault exclusion)

Shaft coupling with ring nut
Without mechanical faultexclusion

Interface

EnDat 2.2

Ordering designation*

EnDat22

Position values per revolution

33 554 432 (25 bits); Fanuc Þ Interface: 8 388 608 (23 bits)

Electrically permissible speed 3000 rpm for continuous position values

Clock frequency
Calculation time tcal

 16 MHz 6 µs

 2 MHz 9 µs–Incremental signals
Cutoff frequency –3 dB–» 1 VPP 400 kHz–Electrical connection

Cable (1 m) with 8-pin
M12 coupling (male)

Cable (1 m) with 17-pin
M23 coupling (male)

Cable (1 m) with 8-pin M12 coupling (male)

EnDat02

Fanuc Serial Interface
Þi Interface

Mitsubishi High Speed
Interface

Fanuc05

Mit03-4

29.6

29.6

53.3
511)

Cable length 150 mSupply voltage

DC 3.6 V to 14 V

Power consumption2) (max.)

3.6 V:  0.72 W; 14 V:  0.8 W

Current consumption (typical)

5 V: 100 mA (without load)

Shaft*

Hollow through shaft, D = 20 mm, with lengths of 49 mm or 55 mm

kMech. permissible speed 3000 rpm

Front-face shaft coupling
Without mechanical fault exclusion

Starting torque at 20 °C

Typically  0.16 Nm

Moment of inertia

Height H = 49 mm: rotor (hollow shaft): 91 · 10–6 kgm2; stator (housing/flange): 570 · 10–6 kgm2
Height H = 55 mm: rotor (hollow shaft): 97 · 10–6 kgm2; stator (housing/flange): 570 · 10–6 kgm2

Permissible axial motionof measured shaft±0.3 mmNatural frequency

 1000 Hz

Vibration 55 Hz to 2000 Hz
Shock: 6 ms

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

Operating temperature

0 °C to 60 °C3)
–20 °C to 60 °C

Protection EN 60529

IP64Mass 0.8 kg

Front-end shaft couplingWith mechanical fault exclusion(for other dimensions, see without mechanical faultexclusion)

A = Bearing of mating shaft
d = Compressed air inlet
k = Required mating dimensions
1 = Mark for 0° position ±5°
2 = Free space for customer
3 = Thread engagement: 4.5 mm ±0.5 mm
4 = Thread engagement: > 7.5 mm
5 = Accessory: ring nut (ID 336669-03)

6 = Accessory: Catch (ID 817921-01)
7 = Two spring pins ISO 8752–2.5 x 10–St8 =	Provide additional back-off thread (M3) when spring pins are used (otherwiseoptional)
9 =	Tolerance specification includes mounting tolerances and thermal expansion;
no dynamic movement permitted
10 = Direction of shaft rotation for ascending position values
11 = Cable support max. 50 mm

RCN 200 Product Information   07/2022

 50 m2* Please select when ordering1)
With HEIDENHAIN cable:  8 MHz2)
See General electrical information in the Interfaces of HEIDENHAIN Encoders brochure3)
No fault exclusion for the loosening of the mechanical connection

RCN 200 Product Information   07/2022

 30 mCalibration chart

HEIDENHAIN prepares individual
calibration charts (Quality InspectionCertificates) for the RCN 2xx encoders
and ships them with the unit. The Quality
Inspection Certificate confirms that theencoder meets the specified systemaccuracy. It is ascertained through five
forward and five backward measurements.
The measuring positions per revolution areselected such that both the long-range
error and the position error within a single
signal period are ascertained with great
accuracy. The reversal error is ascertainedwith forward and backward measurements
at ten positions. The following limit applies
to the mechanical hysteresis:
RCN 2xx: ≤ 2”

Mounting
General information

RCN 2xx with system accuracy ±6”
The Quality Inspection Certificate contains
a measured curve showing the meanvalues of the position errors from five
forward and backward measurements
without hysteresis. The maximum position
errors of the measured curve within 360°
and within one signal period are indicatedseparately. Furthermore, the arithmetic
mean and the maximum value of thehysteresis are documented.

Mounting
The housing of the RCN 2xx is firmly
connected by an integral mounting flange
and a centering collar to the stationarymachine part.

RCN 2xx with system accuracy ±8”
The Quality Inspection Certificate does notinclude information on the measuredvalues.

Shaft coupling with ring nut(ID 336669-03)
For installation, the hollow through shaft of
the angle encoder is placed over themachine shaft, and is fixed with a ring nut
from the front of the encoder. The ring nut
can be easily tightened with the mounting
aid (ID 530334-03).

Front-end shaft coupling
The hollow shaft is attached with thethreaded holes on the face using specialmounting elements fitted to the individual
design (not included in delivery).

Mountingelement (adaptedto the individualdesign)

Ring nut

Shaft coupling with ring nut

Permissible angular acceleration:(without fault exclusion for the loosening of
the mechanical connection)
RCN 2xx: 1000 rad/s2
Material
The materials stated in this table must be
used for the machine shaft and fastening
components.

RCN 200 Product Information   07/2022

RCN 200 Product Information   07/2022

Front-end shaft coupling

Mating shaft

Mating stator

Material

Ferrous materials (steel/cast iron materials)

Tensile strength Rm 600 N/mm2

 250 N/mm2

Shear strength τB 390 N/mm2

 290 N/mm2

Interface pressure pG

 660 N/mm2

 275 N/mm2

Modulus of elasticity E

110 000 N/mm to 215 000 N/mm

Coefficient of expansionÞtherm (at 20 °C)–6 –1
10 · 10 K to
17 · 10–6K–1

Mounting temperature

All information regarding screw connections is based on amounting temperature of 15 °C to 35 °C22

Mounting
Mechanical fault exclusion

Fault exclusion for the loosening of themechanical connection
There are possibilities for attaching theRCN 2xx that rule out such errors.

Electrical connection

Whereas the housing or flange isstandardly mounted with fastening screws,
special factors must be taken into
consideration for the hollow-shaftconnection. When coupling the shaft with aring nut, a catch (ID 817921-01) must beused (moment of inertia of ring nut andcatch: 4.8 · 10–6 kgm2).

Catch

Ring nut

Alternatively, this type of fault exclusion is
also possible for front-end shaft couplingwith mounting screws and spring pins. For
more information on this topic and on
limitations to the specifications, pleaserefer to the table below.

EnDat pin layout without incremental signals
8-pin M12 couplingPower supply

Mounting element(adapted to theindividual design)

Serial data transmission

8251

3476UP

Sensor UP0VSensor 0 VDATA

DATA

CLOCK

CLOCK

Brown/GreenBlue

White/GreenWhite

Gray

Pink

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!

Spring pins

EnDat pin layout with incremental signals
17-pin M23 coupling1)

Mechanical connection

Fastening

Safe position for the Limited specifications
mechanicalconnection2)

Housing/flange

Screws: M4 ISO 4762 8.8±0°Hollow shaft
Shaft coupling with ring nut

Ring nut and catch(see Mounting)±0.55°

Hollow shaft
Front-face shaft coupling

Screws: M3 ISO 4762 8.8
Spring pins: ISO 8752 – 2.5 x 10 – St

±0.07°

See Specifications:• Operating temperature
See Mounting:• Permissible angularacceleration

1)

A suitable anti-rotation lock must be used for the screw connections (mounting/servicing)
Fault exclusion is granted only for the explicitly mentioned mounting options
3)
Compared with shaft coupling without mechanical fault exclusion
2)

Fault exclusion is thereby possible for theloosening of the mechanical connection
between the encoder and the machine
shaft or customer fastening components.
For designing the mechanical fault
exclusion for other purely customer-sideconnections, the following encoder torquemust be taken into account:
MMax = J · Þ + 4.5 Nm
Þ: Max. angular acceleration in theapplication

J: Moment of inertia of the encoder (rotoror stator; see the specifications) and ofthe mechanical connection (e.g., ring nut
and catch when acceleration is applied
through the hollow shaft and shaft
coupling via the given components)
Permissible angular acceleration
Based on where acceleration is applied andon the mounting type, the following values
apply to the angular acceleration:• Permissible angular acceleration of therotor when acceleration is applied via thehollow shaft and shaft coupling withcatch and ring nut:
20 000 rad/s21)

Power supply3)

71

10UP

Sensor
UP0V

Brown/GreenBlueWhite/
Green4

11Sensor Internal0VshieldWhite/

151612131417A+

A–

B+

B–DATADATACLOCK CLOCK

Green/
BlackYellow/
BlackBlue/
BlackRed/BlackGrayPink

VioletCable 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)
Only with the EnDat01 and EnDat02 ordering designations• Permissible angular acceleration of therotor when acceleration is applied
through the hollow shaft and a front-faceshaft coupling with fastening screws andspring pins: 5500 rad/s2• Permissible angular acceleration of thestator when acceleration is applied via
the flange/housing:4000 rad/s2

RCN 200 Product Information   07/2022

Serial data transfer

Incremental signals

RCN 200 Product Information   07/2022

89YellowAdapter cables and connecting cables

Fanuc pin layout

EnDat adapter cables and connecting cable without incremental signals

8-pin M12 coupling

PUR connecting cable

Power supply

Serial data transmission

82

51–

3

UP

Sensor UP0V

Sensor 0 V

ShieldBrown/GreenBlue

White/GreenWhite–

4

Serial DATA Serial DATA
GrayPink

76

RequestRequestVioletYellow

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!

1036521-xx

Adapter cable with 8-pin M12 connector(female) and 15-pin D-sub connector (male)

1036526-xx

Connecting cable with 8-pin M12 connector(female) and 8-pin M12 coupling (male)1036372-xx

EnDat adapter cables and connecting cable with incremental signals

Mitsubishi pin layout
8-pin M12 coupling

2513476UP

Sensor UP0V

Sensor 0 V

Serial DATA

Serial DATA

RequestFrameRequest
Frame

VioletYellowBlue¬ 8 mm; 4 × (2 × 0.16 mm2) + 4 × 0.5 mm2 + 4 × 0.16 mm2)

Adapter cable with 17-pin M23 connector(female) and 15-pin D-sub connector (female)

332115-xx

Adapter cable with 17-pin M23 connector(female) and 15-pin D-sub connector (male)

324544-xx

Connecting cable with 17-pin M23connector (female) and stripped cable end

309778-xx

AP = 2 × 0.5 mm2

Serial data transmission

8Brown/GreenAP = 2 × 0.16 mm2

Adapter cable with 8-pin M12 connector(female) and 15-pin D-sub connector (female)

PUR connecting cable

Power supply¬ 6 mm; 2 × (2 × 0.09 mm2) + 2 x (2 × 0.16 mm2)

White/GreenWhiteGrayPink

Fanuc/Mitsubishi connecting cable
PUR adapter cable¬ 6 mm; 2 × (2 × 0.09 mm2) + 2 × (2 × 0.16 mm2)

Connecting cable with 8-pin M12 connector(female) and 8-pin M12 coupling (male)

AP = 2 × 0.16 mm21036372-xx

AP: Cross section of power supply lines¬: Cable diameter (for bending radii, see the Interfaces of HEIDENHAIN Encoders brochure)
For more cables, see the Cables and Connectors brochure

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!

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

RCN 200 Product Information   07/2022

1253551 · 03 · A · 02 · 07/2022 · 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• Mounting Instructions: RCN 200
1189093-xx• Brochure: Interfaces of HEIDENHAIN Encoders
1078628-xx• Brochure: Cables and Connectors
1206103-xx
For brochures and Product Information documents, visit www.heidenhain.com.