SIEMENS
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Siemens IC 10 · 2017
AS-Interface
Slaves
I/O Modules for Use in the Field, High Degree of Protection
Digital I/O modules IP68/IP69K - K60R
2
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Overview
Operation in particularly harsh environments
K60R module in degree of protection IP68/IP69K
Modules with degree of protection IP67 cannot be used in areas
exposed to permanently high levels of humidity, in applications
with drilling emulsions and cutting oils or when cleaning with
high-pressure cleaners. The answer for these applications is
provided by the expansion of the K60 compact modules with the
K60R module with degree of protection IP68/IP69K.
The K60R modules are connected instead of the AS-Interface
flat cable using a round cable with M12 cable box. The AS-Inter-
face bus cable and the 24 V DC auxiliary power supply are
routed in this case in a shared round cable.
Degree of protection IP68 permits many new applications that
were impossible with the former field modules with degree of
protection IP67. In applications such as filling plants or machine
tools, the K60R with degree of protection IP68 enables the
module to be used directly in zones exposed to permanent load-
ing by humidity. It is thus possible to make even more rigorous
savings in wiring with AS-Interface. For more information on IP68
test conditions,
see "IP68/IP69KK tests" on page 2/61
.
Cleaning with high-pressure cleaners, such as is regularly per-
formed in the food and drinks industry for instance, is possible
without difficulty (IP69K).
In applications with tow chains, many users rely on placing the
AS-Interface bus cable in a round cable. With the K60R module,
a round cable connection is possible for direct connection to a
round cable. No adapter is required.
Mounting
The same mounting plates are used as for the K60 modules.
Instead of using flat cables, the K60R is connected using a
4-pole round cable with an M12 connection. With the K60R the
mounting plate thus serves only as a fixture and ground terminal.
Addressing
Addressing is performed using the same socket as for the bus
connection. Connecting the module to the addressing unit takes
place over a 3-pole standard M12 cable.
When the mounting is finished, the module is connected with the
addressing cable to the addressing unit and addressed. The
addressing cable is then removed and the module connected to
the bus cable.
Connection
K60R connection options
In the IP67 environment, the service-proven standard compo-
nents are connected using flat cables. Spur lines are laid into the
IP68 environment by means of an AS-Interface M12 feeder
(3RK1901-1NR..). The module is connected with a round cable
to an M12 cable box. For this purpose, the module has an M12
bus connection instead of the former addressing socket. The
AS-Interface bus cable and the 24 V DC auxiliary voltage are
routed together in a 4-pole round cable. There must be no
ground conductor in this round cable. Connection to ground is
made through the mounting plate.
In the IP68 environment, only cables with extruded M12 plugs
may be used.
To connect more than one K60R module to one spur line, the
spur line can be split again using a T distributor
(3RK1901-1TR00) with degree of protection IP68.
Please note the following conditions:
•
The configuration guidelines for AS-Interface apply. For all
M12 connecting cables, the maximum permissible current is
limited to 4 A. The cross-section of these cables is just
0.34 mm². For connection of the K60R modules, the aforemen-
tioned M12 connecting cables can be used for the spur lines.
The voltage drop caused by the ohmic resistance (approx.
0.11
/m) must be taken into account.
•
For round cable connections with shared AS-i and
U
aux
in a single cable, the following maximum lengths apply:
- Per spur line from feeder to module: max. 5 m
-
Total of all round cable segments in an AS-Interface network:
max. 20 m
Distributor
IP68
IP68
IP68
NSA0_00339e
K60R
K60R
K60R
IP67
3RK1901-1TR00
© Siemens AG 2016