Specifications
AS-Interface
ASIsafe
AS-Interface safety modules
6/12
Siemens IK PI · 2009
6
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Overview
Safety modules for AS-Interface (ASIsafe modules) are available
for field use in degree of protection IP67 (K20F and K45F
compact modules) and for the control cabinet (S22.5F SlimLine
modules) in degree of protection IP20.
A very compact module with an optimum price /performance
ratio is thus available for very application.
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 space. The K20F modules are connected to
the AS-Interface with a round cable with M12 cable box instead
of with the AS-Interface flat cable. This enables extremely com-
pact 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 operation 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-oriented inputs in operation up to
Category 2 according to EN 954-1. If Category 4 is required,
a two-channel input is available on the module.
- K45F 2F-DI/2DO: There are also two standard outputs in ad-
dition to the safe inputs. Supplied from the yellow AS-i cable
- K45F 2F-DI/2DO U
aux
: same as K45F 2F-DI/2DO, but sup-
plied from the black 24 V DC cable
- K45F 4F-DI: four safety-oriented 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 connection of
solid-state safety sensors with testing semiconductor outputs
(OSSD). In particular non-contact protective devices (BWS)
such as active, optoelectronic light arrays and light curtains
for Type 2 and Type 4 according to IEC / EN 61496. Transmit-
ters as well as receivers are supplied with power from the yel-
low AS-i cable. Matching sensor cables and optionally a sep-
arate transmitter supply module are available as accessories.
S22.5F SlimLine safety modules for operation in control
cabinets and local control cabinets
The S22.5F SlimLine safety module has two safety inputs. The
safe connection of signals to ASIsafe networks in the control
cabinet is also possible therefore. For operation up to Category
2, both inputs can be assigned separately; if Category 4 is re-
quired, a two-channel input is available on the module.
In addition there are two S22.5F module versions which have two
standard outputs in addition to the two safety inputs; power is
supplied either from only the yellow AS-Interface cable or as
auxiliary voltage from the black 24 V DC cable.