Page 870 - Sensors and Systems - North American Catalog
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AS-Interface
Introduction
Cordsets
To
simplify
your
installation,
Pepperl+Fuchs offers a complete
line of Nano and Micro cordsets
along with extension cables in a
wide variety of protective jacket
options to ensure reliable operation
in mechanically and chemically
abusive environments.
Tough, heavy-duty, oil- and weather-resistant PVC and PUR cable jackets
provide superior protection and ensure a safe connection. Oil, water, metal
shavings, grime, and other common contaminants cannot penetrate the
molded, one-piece connector head and cable. Integrated cable stress
relief allows cables to withstand heavy flexing and physical abuse without
decreasing cable life.
AS-Interface Is SAFE
AS‑Interface Safety at Work
AS-Interface Safety at Work (SaW) is a system that enables networking of
safety devices (safety door switches, e-stops, safety light curtains, etc.) using
a standard AS-Interface network. Also motors, brake actuators, fans, etc.
can be safely controlled via safe output modules. A safety monitor checks
communication and ensures safe power-down to Category 4 according to EN
954-1 or to SIL3 according to IEC 61508.The AS-Interface Safety concept is
decentralized, flexibly modified, and offers logical combinations.The monitor
evaluates data communication on the AS‑Interface cable using dynamic
code sequences that are taught in to the monitor during commissioning.
Additionally, AS‑Interface guarantees a safe shutdown time (maximum
40 ms). A safety monitor integrated into the master can control up to 16 safe
shutdown circuits with multiple safe inputs and outputs. Safe outputs can be
grouped together and controlled simultaneously via a singleshutdown circuit.
Field and control cabinet modules, emergency stop buttons, door locks, and
locking door guards with integrated AS‑Interface chip are available as safety
modules with safe inputs. Several AS-Interface segments can be coupled
together safely.
The bus communication and the deployed technology have been assessed
as safe and certified by TÜV. AS‑Interface can be used even for the highest
safety level PLe specified in the new machine safety guideline ISO 13849-1.
Machines can be controlled in accordance with stop category 0 (immediate
energy shutdown) and 1 (controlled shutdown).
The following features make Safety at Work unique and powerful:
• Control I/O and safety information on the same network
• Safety Category 4 according to EN 954 , up to SIL 3 according to IEC
61508, EN ISO 13849-1 PLe
• Does not require a Safety PLC
• Automatic single node replacement is supported
• The safety monitor allows implementation of both simple and powerful
safety procedures
• Adding safety devices is simple and fast
• Safety modules can be added wherever needed, even during final
phases of the project
• 31 safety modules per network
• The status of safety inputs and safety relays can be monitored directly
on AS-Interface and sent to the PLC
• Up to 961 safe devices on one system of AS-Interface networks
Two safe, remote output modules share the safe address 8, thus switching
simultaneously when the SafetyMonitor signals an on/off state. The two
safe output modules also have a unique, standard A/B address to transmit
individual standard inputs, EDM, and diagnostics data.
AS-i Gateway/Scanner
AS-i Power Supply
SafetyNode
SafetyMonitor
Address 1
Address 2
Safe Ouput
Module
Safe Ouput
Module
Address 8
Address 8
Address 7B
Address 7A
Address 3
Address 3A Address 4
Address 4A
Standard I/O Modules
AS-Interface
AS-Interface,
Master/Gateways
7 7
.1
AS-Interface,
Power Supplies, Power Extender and Repeater
7
.2
AS-Interface,
Safety at Work
7
.3
AS-Interface,
Modules
7
.4
AS-Interface,
Indicating/Operating
7
.5
AS-Interface,
Accessories
7
.6
