SIEMENS
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Siemens IC 10 · 2017
AS-Interface
ASIsafe
AS-Interface safety modules
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Overview
AS-Interface safety modules: K45F (left), K20F (center) and
SC17.5F (right)
S45F SlimLine module, safe AS-i output
Safety modules for AS-Interface (ASIsafe modules) are available
for field use in degree of protection IP67 (K20F and K45F com-
pact modules) and for the control cabinet (SC17.5F SlimLine
Compact modules) in degree of protection IP20.
A very compact module with an optimum price /performance
ratio is thus available for very application.
All modules for the connection of (mechanical) switches and
safety sensors with contacts feature crossover monitoring of the
connected sensor line. On versions for the connection of elec-
tronic switches and safety sensors (e.g. light arrays) the cross-
circuit monitoring must be performed by the sensor.
AS-Interface safety modules
The following modules are available for selection:
K20F compact safety modules for operation in the field
Being only 20 mm wide, the K20F module is particularly well
suited for applications where modules need to be arranged in
the most confined of spaces. The K20F modules are connected
to the AS-Interface with a round cable with M12 cable box in-
stead of with the AS Interface flat cable. This enables extremely
compact installation. The flexibility of the round cable means that
it can also be used on moving machine parts without any prob-
lems. The K20 modules are also ideal for such applications as
their non-encapsulated design makes them particularly light in
weight.
K45F compact safety modules for use in the field
The platform of the K45F modules covers the following varia-
tions:
•
Connection of ("mechanical") switches/safety sensors
with contacts:
- K45F 2F-DI: Two safety-related inputs in operation up to
Category 2 according to EN ISO 13849-1. If Category 4 is
required, a two-channel input is available on the module.
- K45F 2F-DI/2DQ: There are also two standard outputs in ad-
dition to the safe inputs. Supplied from the yellow AS-i cable
- K45F 2F-DI/2DQ
U
aux
: same as K45F 2F-DI/2DQ, but
supplied from the black 24 V DC cable
- K45F 4F-DI: Four safety-related inputs in operation up to
Category 2, two for Category 4 Extremely compact double
slave (uses two full AS-i addresses).
•
Connection of solid-state switches / safety sensors
(non-contact protective devices, BWS):
- K45F LS (light sensor): Safe input module for connecting
electronic safety sensors with testing semiconductor outputs
(OSSD).
In particular, non-contact protective devices, such as active,
optoelectronic light curtains and arrays for Type 2 and
Type 4 according to IEC 61496.
Transmitters as well as receivers are supplied with power by
the yellow AS-i cable. Matching sensor cables and optionally
a separate transmitter supply module are available as ac-
cessories.
SC17.5F SlimLine Compact safety modules with a width of just
17.5 mm for use in control cabinets and local control boxes
With a width of only 17.5 mm, the safe SlimLine Compact mod-
ules SC17.5F are ideal for space-saving use in a control cabinet.
The modules have more than two safety inputs for connecting
signals to ASIsafe networks in the control cabinet. For operation
up to Category 2, both inputs can be separately assigned;
if Category 4 is required, a two-channel input is available on the
module.
There are also two module variants which have two standard
outputs in addition to the two safety inputs. The outputs are
supplied either from the yellow AS-Interface cable alone, or
via auxiliary voltage from the black 24 V DC cable. The supply
voltage is set via a slide switch on the rear of the device.
When using several modules, they can be connected simply
via the optional device connector. This simplifies the wiring.
The yellow AS-i bus cable and the 24 V DC auxiliary voltage
U
aux
then only need to be connected to one module.
© Siemens AG 2016