07.312.2153.0 WIELAND ELECTRIC, 07.312.2153.0 Datasheet - Page 408
![END PLATE, WKF/WKC SERIES TERMINAL BLOCK](/photos/18/38/183891/3759154_sml.jpg)
07.312.2153.0
Manufacturer Part Number
07.312.2153.0
Description
END PLATE, WKF/WKC SERIES TERMINAL BLOCK
Manufacturer
WIELAND ELECTRIC
Series
APFr
Datasheet
1.07.311.0155.0.pdf
(900 pages)
Specifications of 07.312.2153.0
Accessory Type
End Plate
For Use With
WKF/WKC Series Fused Terminal Blocks
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Technical information
on bus systems
BASIC
In 1983 the automotive industry phrased
their demand for a bus system to be used
in motor vehicles. An electrical two-wire
bus was to replace the extensive cable
harnesses used to connect electrical
systems. This was absolutely necessary,
as the classical cable harnesses in motor
vehicles had already reached lengths of
more than 2 km and a weight over 100 kg.
Requirements came up that could not be
met by the bus systems available at that
time.
The major requirements:
High protection against electromagnetic
interference
Real-time capability for fast procedures
such as ignition and ABS
High reliability
Favorable price for large batch
applications
In 1985 the solution in form of the
Controller Area Network (CAN) was
presented. CAN was developed in a
cooperation between Robert Bosch
GmbH and INTEL Semiconductor. In the
meantime, CAN has gained a wide field of
applications, not only in the motor vehicle
technology, but also in the automation
technology. Nowadays we find CAN in
mobile systems, as machine-internal or
system-internal communication system, in
production automation, in the bottom field
segment of process automation, even in
building instrumentation and control, and
in many other applications.
Since 1992 the user organization CiA
(CAN in automation) has existed. More
than 200 manufacturers and users of
automation devices, sensors, actuators,
software and services are participating in
it [Trum95]. CAN is internationally
standardized in ISO 11898 and is
therefore an open bus system.
The reason for the widespread
acceptance of CAN lies not only in the
mentioned performance features, but
especially also in the availability of very
low-cost circuits due to the high quantities
guaranteed in the automotive industry
[Law2/97]. Characteristics:
Line structure
(with passive bus coupling)
Number of nodes limited by the
performance of the driver modules only
Expansion depending on the
transmission rate 40 m at 1 Mbit/s;
1000 m at 50 kbit/s
Twisted-pair cables with terminating
resistors and optical fibre
Object-oriented messages, broadcasting
and multicasting with acceptance check
Multi-master network
Bus access via bit-by-bit arbitration
according to the CSMA/CA procedure;
real-time capable for high-priority
messages
Max. transmission rate of 1 Mbit/s
Very high data security (HD = 6); error
detection and error signaling; automatic
power-off of defect stations (node
guarding)
Different chips and micro-controllers
support the protocol
Open system (ISO 11898 and
CiA DS 301)
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