ABB Jokab Safety offers an extensive range of innovative products and solutions for machine safety systems which has been expanded with its award winning Safety Sensor Eden AS-i.
How does the AS-interface bus system work?
The AS-i system is distinguished by its special yellow profile cable. The cable connects all sensors, transducers and actuators on the network to a master system. The component parts of a system can include both non-safe and safe products. This means that both operational and safety related products can be mixed in a network. The bus system drives a Master-Slave (node) configuration where each I/O module corresponds to a common master.
After commissioning the system can always be expanded by adding branches or extensions to the cable. In a similar way, more products can be added, moved or replaced.
Why is the AS-i Safety so good from a safety perspective?
The simple connection to a cable also applies to safety components. The risk of incorrect wiring is thereby minimised. Each safety node, i.e. safety product, has its own address on the AS-i bus along with a unique safety code.
The additional requirement for an AS-i system to cope with safety products is that there must be extra safe monitoring. The control ("Master") does not need to be safe, but is complemented with a safety Monitor (however, safety PLC Pluto AS-i can act as both Master and/or Monitor).
The advantage of safety within AS-i is that it is easy to introduce changes without significant costs compared to traditional safety systems that require new cable running from the electrical cabinet for each new protection.
A non-contact safety sensor for the highest safety level
Eden AS-i is a non-contact safety sensor for use on interlocked gates, hatches etc. Eden AS-i consists of two complementary parts called Adam and Eva. The sensor is only activated if the gate or hatch is closed e.g. when Adam and Eva are within sensing distance. Eden AS-i is constantly communicating between the two parts and any failure will directly lead to a stop signal.
A non-contact safety sensor for AS-i
Eden AS-i has an integrated AS-i node and is connected via an M12 connection directly to the AS-i cable.
Eden AS-i has a protective encapsulation that enables Eden AS-i to be used in harsh environments. Each Eden AS-i is individually coded which makes it secure against manipulation.
One of the advantages of safety within AS-i is that it is very easy to install since connection of the safety devices is just to the bus cable. The function of the safety devices is determined by the software program in the safety monitor/master. Each safety device (node) has its own address and a unique safety code.
It is simple to add, move and disconnect safety devices on the AS-i cable as well as to extend the AS-i cable. Traditional safety systems require new cable running from the electrical cabinet for each new protection. Connection with Eden AS-I is simple as all units are connected to the same cable.
For more information, please contact
Low Voltage Products Customer Support
[email protected]
www.abbaustralia.com.au/lowvoltage
