Product Information

HMC 6
Hybrid Motor Cable

07/2023

HMC 6Single-cable solution for servomotors

The universal design of the HMC 6 gives
you, the motor or machine manufacturer,utmost flexibility by allowing you to use
standard components on both the motor
and the control.

Servomotors normally require two separate
cables:• One cable for the motor encoder• One cable for the motor power supply
With the HMC 6 (Hybrid Motor Cable),
HEIDENHAIN has integrated the encoder
wires into the power cable. Thus, now onlya single cable is needed between themotor and electrical cabinet.
The HMC 6 single-cable solution wasspecifically designed for the HEIDENHAIN
EnDat22 interface with purely serial datatransmission at a cable length of up to
100 m. However, any encoder with a purely
serial RS-485 interface can be connected
as well. A wide range of encoders cantherefore be used without the need for
introducing a new interface.

A particular advantage of the HMC 6 singlecable solution is its compatibility with all
HEIDENHAIN encoders that are
equipped with the EnDat22 interface orthat are capable of purely serial datatransmission without battery buffering inaccordance with RS-485. These encoders
include rotary encoders for servomotors invarious sizes, as well as linear and angle
encoders used in direct drives. Also
compatible, of course, are encoders forfunctional safety up to SIL 3.

Encoder connections(communication element)
Brake connections
Motor connections

But there is no need for acrobatics on thecontrol side either, because you cancontinue to use your already existing
inverter systems or controller units. The
HMC 6 cable has been designed for theeasy assembly of the proper connecting
elements. Most importantly, the noise
immunity is not impaired.

The HMC 6 solution combines the wires
for the encoder, motor, and brake into asingle cable. This cable is connected to themotor with a special connector. For
connection to the inverter, the cable is split
into power connections, brakeconnections, and encoder connectors, sothat all of the familiar components cancontinue to be used on the control.
When these components are correctlyconnected, the connecting elements attainan IP67 rating. A quick-release lock andvibration protection against the looseningof coupling joints are integrated into theconnector.

Components
You need only a few components to getyour motor ready for the single-cablesolution.
Connecting element on the motor
The motor housing must be equipped witha special angle flange socket that gathers
together the wires for the encoder, themotor power supply, and the brake.
Crimping tools for the power wires
The crimp contacts for the power andbrake wires are assembled with the usualtools.

Advantages
The HMC 6 single-cable solution offers aseries of cost and quality improvementsthat benefit both the motor manufacturer
and the machine tool builder:• Continued use of existing interfaces• Potential for smaller drag chains• Significant improvement in drag-chain
suitability thanks to fewer cables• Wide range of available encoders for
HMC 6 transmission

2• Reduced need for mechanical alterations(flange socket on the motor and cableducts within the motor housing)• Reduced logistical cost and effort forcables and connectors• Simpler and speedier installation• Reduced documentation effort• Lower number of required components
for servicing• Lower motor profile with attached cablefor easier integration into the machine
enclosure• HEIDENHAIN-tested power- andencoder-cable combination

Product Information HMC 6    07/2023

Output cable inside the motor housing
The rotary encoder is connected over theoutput cable inside the motor housing: yourpre-assembled communication element is
simply plugged into the angle flange
socket.
Cable with hybrid connector
In addition to the encoder wires, theHMC 6 motor connecting cable also
incorporates the power and brake wires.
The cable is assembled to a hybrid
connector on one end.

Product Information HMC 6   07/2023

HMC 6flange socket

HMC 6connector

Power wires

Encoder output
cable inside themotor housing

Brake wires
Temperature

Encoder

Subsequent electronics
Encoder wires
Brake wires
Power wires

3HMC 6Components

Angle flange socket
A special angle flange socket is used forthe electrical connection of the motor to
the subsequent electronics. Inside theangle flange socket, the encoder wires(communication and power supply), themotor power wires, and the brake wires
are all brought together.

Output cable inside the motor housing
The output cables within the motor
housing are pre-assembled. The PCB
connector is connected to the rotary
encoder, and the communication element
is simply plugged into the angle flangesocket. Output cables for inside the motor
housing are available for most rotary
encoders of the ECN/EQN/ECI/EQI 1100
and the ECN/EQN/ECI/EQI 1300 families.
These cables are available either with orwithout wires for the connection of atemperature sensor located in the motor
winding (cross section: 0.16 mm2).

Angle flange socket

Fastening hole circle

Crimp contacts for the power wires areavailable with cross sections of up to2.5 mm2 and 4 mm2. All versions feature
an M23 outside thread for the connector.

 28 mm2Cross section: 2.5 mm

ID 1043027-01

2ID 1043027-03

Cross section: 4 mm

The crimp contacts for the power andbrake wires are included in the angle flange
socket service pack. The encoder connections are simply plugged into the contact
insert as a pre-assembled communication
element. A protective cap is included forthe threads of the flange socket. The angle
flange socket and connector can be individually marked with colored rings for unambiguous identification. These colored rings
are available from TE Connectivity.

For the required mating dimensions, please refer to the Cables and Connectors brochure.

Output cables inside themotor housing

ECN/EQN 11xx ECI/EQI 11xx
ECI 1xx

ECN/EQN 13xx
ECI/EQI 13xx

Without temperature sensorwires

ID 1034953-xx–

ID 1034913-xx

With temperature sensor wires

ID 1035857-xx–

ID 1035387-xx

With temperature sensor wires
and cable clamp for shieldconnection–

ID 1072652-xx–

For information on the temperature
sensors that can be used, please refer tothe Encoders for Servo Drives brochure.
Crimp connector
For joining (crimping) the wires of thetemperature sensor output cable to thewires of the temperature sensor within themotor.
ID 1148157-01
Output cable for inside the motor housing, with PCB connector,
temperature sensor wires, and communication element

Crimping tools
The contacts to be used in the angle flange
socket for the power and brake wires are
standard, commercially available crimpcontacts. Their assembly requires theappropriate crimping tools and adjustingaids.
You can order these crimping tools directly
from:
TE Connectivity Industrial GmbH
Bernriederstraße 1594559 Niederwinkling, Germany
Tel.: +49 9962 2002-0
Fax: +49 9962 2002-70
E-mail: intercontec@te.com
Web: www.te.com

C0.236.00 digital crimping toolwith C0.245.00 locator

C0.235.00 digital crimping toolwith C0.265.00 locator

Cable with hybrid connector
In addition to the encoder wires, theHMC 6 motor connecting cable also
incorporates the power and brake wires.
On one end, the cable is assembled to an
M23 hybrid connector that fits the angle
flange socket on the motor.

Cables with hybrid connector

Power wires (cross section)

Cable length

1.5 mm

4 mm210 m

ID 1188098-10

ID 1188099-1025 m

ID 1188098-25

ID 1188099-25

The HMC 6 cables are available with power
wire cross sections of 1.5 mm2 or 4 mm2.
The cable end for the inverter isunassembled.

50 m

ID 1188098-50

ID 1188099-50

2

For information on wire cross sections, please refer to the Cables and Connectors
brochure.

For other cable lengths and larger
quantities, please contact your sales
agency.

C0.201.00 manual crimping toolwith C0.138.00 locator

Testing cable for PWM 2x
Cable length: 1 m
ID 1189174-01
Contacts and tools

Order number

Cross section

Intercontec

Crimping tool

Adjusting aid(locator)

21043266-01
1043266-02

61.253.11
61.221.11

C0.235.00
C0.236.00

C0.265.00
C0.245.00

221043251-01

61.242.11

C0.235.00

C0.265.00

1043251-02

61.243.11

C0.201.00

C0.138.00

0.14 mm to 1.0 mm
0.5 mm2 to 1.5 mm2Power contacts

0.35 mm to 2.5 mm
22.5 mm to 4.0 mm

4HEIDENHAIN
2Brake contacts

2

Crimping Tool

Product Information HMC 6    07/2023

Product Information HMC 6   07/2023

5

HMC 6Components

Crimping tools
Crimp parameter settings (non-binding information)
Please comply with the current user’s manual for crimping tools from TE Connectivity!

Motor connecting cable
In some cases, you may need to assemble
the motor connecting cable or an extension
cable on your own, which is why you canalso order the required components
individually.
The hybrid connector and coupling areshipped as service packs containing thecontact insert and all of the crimp contacts
required for the power, brake, and encoder
wires, as well as the communication
element and a protective cap for the M23
thread of the coupling.
The hybrid cable is shipped in lengths of
10 m, 20 m, or 100 m as a bundle, or at alength of 1000 m on a drum.

Connecting elements*

Power wires (cross section)
2

Type of contact

60.216.xx

60.270.xx

ID 1075255-02

Crimping tools withdigital display

C0.236.00

ID 1084549-02

Locator

1.5 mm4 mm2

Hybrid connector

ID 1075255-01

Hybrid coupling

ID 1084549-01

Hybrid coupling

Hybrid connector

Hybrid cable (unassembled)

Power wires (cross section)

Length

1.5 mm

4 mm2

10 m

ID 1188327-10

ID 1188328-10

2* Available in stainless steel upon request
For the required mating dimensions, please refer to the Cables and Connectors brochure.

Tools for the communication elementin the hybrid connector and coupling
In addition to the tools for crimping thepower and brake contacts, other tools are
required for assembly of the hybrid cable.
In particular, these tools are needed for
assembling the encoder wires and thecommunication element.
The tools for assembly of thecommunication element can be ordereddirectly from:TE Connectivity Industrial GmbH
Bernriederstraße 1594559 Niederwinkling, Germany
Tel.: +49 9962 2002-0
Fax: +49 9962 2002-70
E-mail: intercontec@te.com
Web: www.te.com

6For contacts ≤ 2.5 mm2C0.235.00 digital crimping toolwith C0.265.00 locator

61.221.xx

61.242.xx

C0.235.00

C0.236.00

C0.235.00

C0.245.00

C0.265.00

C0.245.00

C0.265.00

Locator setting

129129Wire cross section

Crimp dimension setting [in mm or specified as per MIL 22520]

100.48/H20.56/H30.102 mm2

AWG 270.48/H20.48/H20.65/H4

0.14 mm2

AWG 26

0.48/H20.48/H20.65/H4

0.2 mm2

AWG 240.56/H30.56/H30.74/H50.24 mm2

AWG 230.56/H30.56/H30.74/H50.34 mm2

AWG 220.65/H40.84/H60.5 mm2

AWG 200.81/F2

1.06/–

0.81/F2

1.06/–

0.84/H60.75 mm2

AWG 190.81/F2

1.14/–

0.81/F2

1.14/–

0.94/H70.82 mm2

AWG 180.81/F2

1.22/–

0.81/F2

1.22/–

0.94/H7

1.0 mm2

AWG 170.91/F3

1.29/–

0.91/F3

1.29/–

1.04/H8

1.3 mm2

AWG 16

0.91/F3

1.30/–

0.91/F3

1.30/–

1.5 mm2

AWG 150.99/F4

1.31/–

0.99/F4

1.31/–

2.1 mm2

AWG 14

1.33/–

1.33/–

2.5 mm2AWG 13

1.34/–

1.34/–

0.90/–

Type of contact

60.272.xx

Hand crimping tool

C0.201.00

LocatorC0.138.00

Locator settingBlue

Wire cross section

Tool setting

For crimping the contacts
for encoder wires

0.32 mm to 2.5 mm

C0.235.00 crimping tool with
C0.265.00 locator

For crimping the shield
for the communication
element–

C0.323.00 assembly tool andC0.321.00 crimp insert

2.5 mmFor sliding on the locking
sleeve for the communication element–

C0.323.00 assembly tool andC6.166.00 positioning insert

4.0 mmProduct Information HMC 6    07/2023110.48/H2

Cross section
261.253.xx

AWG 28Tools

2Tool1161.252.xx

0.081 mm2

For contacts from 2.5 mm2 to 4 mm2C0.323.00 assembly toolwith crimping and positioning insert

60.278.xx

61.243.xx

Blue

332–

442AWG 12

442–

55Product Information HMC 6   07/2023

Green fields: Settings required for HEIDENHAIN connectingcables

Date of table: October 2014

AWG 14

3.3 mm0.90/–

Gray fields: Possible settings for motor connection wires

22.1 mm0.65/H47

General electrical information

Electrical connection

Use of the hybrid cable is subject to thegeneral electrical information in theInterfaces of HEIDENHAIN Encoders
brochure.

Pin layout• The NRTL certification is documented
by the label “AWM STYLE 20235 80 °C
Voltage not specified E63216.”• The hybrid cable is suitable for use witha drag chain for up to at least 5 000 000
cycles at a bend radius of seven times
the cable diameter.
• The ampacity of the hybrid cable
complies with VDE 0891 Part 1.
• Cable lengths of up to 100 m are permitted, as are clock frequencies in accordance with the EnDat specifications (seethe Interfaces of HEIDENHAIN Encoders
brochure).

K

Servocontrol

Motor

X

263

Encoder

7845EDCXA

Travel range

B

16-pinPCB connector

15-pinPCB connector
1516Encoder

Motorbrake

Power supply
PUR jacketof hybrid cable

Power module

Grounding diagram

Serial data transmission

Other signals

123456//161b4b6b1a2b5a8a8b1513147891056UP0V

DATA

DATA

CLOCK

CLOCK

T+1)

T–1)

Brown/GreenWhite/Green

GrayPink

VioletYellowBrown

Green

Area of application as per EN 61800-5-1 / UL 20235Power wires

Encoder wires andbrake wires

System voltage

300 V

50 VVoltage class

CWorking (nominal) voltage

1000 V EN 61800-5-1
600 V UL 20235

50 V EN 61800-5-1
30 V UL 20235

IIIII

Overvoltage category

DiameterCables with hybridconnector

 13.6 mm

JacketPUR

MotorBrake

Power

78A

B

C

DE

BRAKE–BRAKE+U

V

W/

PE

White

White/BlackBlue

Brown

Black/

Yellow/
Green

External shield of the encoder output cable on communication element housing K.
Unused pins or wires must not be assigned!
1)	For the connection of a temperature sensor, see the encoder’s documentation.
Conformity with the EMC Directive must be ensured for the complete system!

Bend radius
Bend radius R
Rigidrouting

Frequentflexing≥ 50 mm≥ 80 mm

 16.6 mm

PUR≥ 65 mm≥ 110 mm

Output cable inside  3.7 mm
the motor housing

EPG≥ 10 mm–DR. JOHANNES HEIDENHAIN GmbH
Dr.-Johannes-Heidenhain-Straße 583301 Traunreut, Germany +49 8669 31-0
 +49 8669 32-5061
info@heidenhain.dewww.heidenhain.com

81E

Please also note the following:• Shielding must be implemented inaccordance with the grounding diagram.
• Unneeded brake wires must begrounded on the power module.
• The air clearance between the stripped
power wires and brake wires, andbetween the stripped power wires andencoder wires, must comply with atleast the basic insulation (based on theworking voltage of the U/V/W powermodule).
• The shield of the power wire bundle
must be folded back over the protective
jacket of the connecting cable. The shieldmust also be shortened and connected
to protective earth (PE).
• The temperature range of the output
cable within the motor is –20 °C to120 °C (at rest).

HMC 6 flange socket

Product Information HMC 6    07/2023

1091351 · 02 · A · 02 · 07/2023 · 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 made.

More information:
Comply with the requirements described in the following documents to ensure correctand intended operation:• Brochure: Cables and Connectors
1206103-xx• Brochure: Encoders for Servo Drives
208922-xx• Brochure Interfaces of HEIDENHAIN Encoders1078628-xx
For brochures and Product Information documents, visit www.heidenhain.de.