Benefits of Application Blocks

Configurable safety relays offer a wide range of predefined application blocks. These blocks form the basis for implementing the safety technology requirements of plant and machinery. The availability of blocks for the widest possible range of applications and functions enables the user to implement his requirements quickly and effectively.

Application Blocks for Muting Function
The “muting function” is one of those laborious functions which previously required the application of special relays, but which can now be implemented easily using configurable safety relays. This function is used to automatically and temporarily suspend a safety function, such as a light curtain or laser scanner. It is often applied, for example, to transport material into or out of a danger zone. A distinction is made between sequential and cross muting. Typical application areas include the automotive industry, on palletizing and drink dispensing machines, or in the manufacture of stone products (concrete blocks, tiles etc.). Additional sensor technology is used to distinguish between persons and objects.

Example: Sequential muting
Muting phase 1:

• Material in front of the danger zone
• Light beam device active
• Muting lamp off

 
Muting phase 2:

• Muting sensors 1 and 2 operated
• Light beam device suspended
• Muting lamp active

Muting phase 3:

• Muting sensors 3 and 4 operated
• Light beam device suspended
• Muting lamp active

Muting phase 4:

• Muting process ended
• Light beam device reactivated
• Muting lamp off