Specifications
AS-Interface slaves
I/O modules for operation in the field, high degree of protection
Digital I/O modules IP68/IP69K - K60R
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Siemens IK PI · 2012
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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 voltage supply are
routed in this case in a shared round cable.
Degree of protection IP68 permits many new applications, which
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 mod-
ule to be used directly in zones exposed to permanent loading
by humidity. It is thus possible to make even more rigorous sav-
ings in wiring with AS-Interface. The IP68 test conditions can be
found in the section "IP68/IP69K tests".
Cleaning with high-pressure cleaners, such as is regularly per-
formed in the food drinks industry for instance, is possible with-
out 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
there is a round cable connection for direct connection to a
round cable. No adapter is required.
Mounting
The same mounting plates are used as for the K60 modules. In-
stead of using flat cables the K60R is connected using a 4-pole
round cable with an M12 connection. With the K60R the mount-
ing 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 ad-
dressing 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
(3RK1 901-1NR..). 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 (3RK1 901-
1TR00) with degree of protection IP68.
Please note the following boundary 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 amounts to
just 0.34 mm². For connection of the K60R modules, the afore-
mentioned M12 connecting cables can be used for the spur
lines. The voltage drop caused by the ohmic resistance
(approx. 0.11Ω/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: maximum 5 m
- total of all round cable segments in an AS-Interface network:
maximum 20 m
Tests IP68/IP69K
• K60R modules were tested with the following tests:
• Stricter test than IP67: 90 min at 1.8 m depth of water
(IP67: 30 min at 1 m depth of water)
• Salt water test: Five months in salt water, 20 cm deep, at room
temperature
• Test with particularly creepable oil: Five months completely
under oil at room temperature
IP68
IP68 IP68
NSA0_00339d
K60R K60RK60R
IP67
3RK1 901-1TR00
Distributor
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