M8/M12 Circular Connectors
www.erni.com
Catalog E 074554
03/10
Edition 4
www.erni.com
Catalog E 074554
03/10
Edition 4
A4
M8/M12 Circular Connectors
Table of Contents
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical and Mechanical Characteristics PCB Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical and Mechanical Characteristics Cable Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical and Mechanical Characteristics Quick Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical and Mechanical Characteristics Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
M8 Female PCB Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
M8 Male PCB Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
M8 Cable Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
M8 Quick Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
M12 Female PCB Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
M12 Male PCB Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
M12 Male PCB Connectors for Direct Integration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
M12 Cable Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
M12 Quick Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Accessories Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Accessories T-Coupler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Accessories Panel Feed-Through . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Part Number Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Catalog E 074554
03/10
Edition 4
www.erni.com
1
M8/M12 Circular Connectors
General
Since the end of the ‚80s, the trend of integrating more and
more electronics and intelligence in machines has rapidly
gained momentum. Whereas before, only controls in a switch
cabinet regulated actuator or sensor systems by way of so-
called I/O cards, today there is an increasing number of
intelligent field devices outfitted with local I/Os and connected
to the switch cabinet via a fieldbus or even have the entire
control system on board.
Up until this point in time, M8 and M12 connectors were only
referred to and used as sensor connectors. The open end of
the sensor cable was routed in the switch cabinet and wired
there. Today, sensors and actuators in the field frequently are
connected to a passive I/O box or one with fieldbus capability.
The harsh influences of the environment on these boxes make
proven and, particularly, tightly sealed (IP 65/67) connectors a
necessity. As such, it only made sense to use the M8 or M12
connector systems here as well, which already had establis-
hed themselves in the field of sensor technology. Meanwhile,
the M12 connector also is recommended as a fieldbus con-
nector for almost all field bus applications. To make sure that
nothing gets mixed up, there are a series of codes for assi-
stance.
ERNI, the known specialist for printed circuit board connectors,
has seized an opportunity. Today, there still is an insufficient
number of connector types for these boards. As field devices
are very specific, a wide variety of flexible modular connectors
is required in order to implement these applications with as
little effort and expense as possible.
International Standards for M8/M12 connectors
• IEC 60947-5-2 low voltage sensor switch device
• IEC 61076-2-101 form factor M12 further polarizations for
M12
• IEC 61076-2-104 form factor M8 further polarizations for M8
• Profibus installation guideline
• Interbus Club specification
• IAONA, Industrial Ethernet, planning and installation guide
• SafetyBUS
• DeviceNet
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Catalog E 074554
03/10
Edition 4
www.erni.com
M8/M12 Circular Connectors
General
PCB Connectors
ERNI has developed such a modular system with M8/12
connectors that is fully flexible in application and has SMT
connections that are so robust that bulk packaging and feed-
ing are possible. The connector has also been designed for
tape-on-reel packaging. The concept allows connectors to be
produced at various heights and with different pin configurations.
The black insulator is made of high-temperature plastic,
and is suitable for soldering with all the usual SMT soldering
procedures. The new M8/M12 connectors are designed for
lead-free processing, which is mandatory since July 2006.
Especially cost cutting by reduction of printed circuit board
surface is achieved. In specific applications, two printed circuit
boards can be replaced by one. A pick & place pad for female
connectors is not required while using a gripper or special
pipette.
Cable Assemblies
As a completion to the product portfolio ERNI Electronics
also offers cable assemblies for the connection of sensors/
actuators or other automation systems devices such as I/O
distribution boxes. The standard product range covers pre-
assembled, over-moulded circular connectors of sizes M8 and
M12 either as interconnection of two circular connectors or as
a cord set having an open end of line.
In addition, the portfolio comprises of field-attachable con-
nectors for tool-less cable termination, T-coupler, panel feed-
throughs and adapter for quick and cost-efficient connection
in the field. ERNI extends the variety with different cable
qualities that meet the most versatile industrial requirements
and therefore are applicable for a wide range of use. PVC as
a competitive and economic solution or PUR (UL/CSA appro-
ved), halogenfree and UV resistant, for highly demanding applications in drag chains and harsh environments – where operational
reliability is crucial. Innovative product features like the self-securing screw locking guarantee vibration-proof and secure connection.
The coupling nut additionally combines a knurled surface with a spanner flat suitable for standard wrenches.
Different configurations, designs and codings are available from stock. All parts meet IP67 requirements (IEC 60529) to ensure
protection against dust and water immersion. ERNI’s pre-assembled cable assemblies use standard-wise two cable qualities in five
different lengths. Further options are possible on request.
PVC
•
qualified cable for medium mechanical load and usage of
non-recurrent stress, i.e. for assembly lines
• easy to dismantle
• good chemical resistance
• limited resistance against abrasion and lubricants
• the competitive and economic solution for less demanding
applications
PUR
• cable for heavy-duty applications in harsh environments and
continuous stress, i.e. during metal cutting operations
• drag chain capable
• highly resistant against abrasion
• very good resistance against oil, lubricants, coolants and
other aggressive chemicals
• halogen-free, hydrolysis and UV resistant
• flame retardant
• reliable solution for highly demanding applications; UL/ CSA
approved
As a proven specialist for printed circuit board connectors, ERNI Electronics has expanded its expertise towards industrial custo-
mers i.e. from automation technology and process industry by offering highly flexible and modular solutions, which consequently
emphasize the idea of decentralised automation systems.
Catalog E 074554
03/10
Edition 4
www.erni.com
3
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