Skillets moving through a production line are re- quired to keep a pre-defined separation distance. In addition an emergency stopping function has to operate in a functionally safe manner.
Challenge
Control and Safety-related data traffic needs to be transmitted continously for several applications in parallel. Uninterrupted, continous movement of AGVs is a prerequisit for high productivi- ty and optimum production output.
Problem to be solved
Control: Bridge E enables vehicles (AGVs) to share low-latency controls amongst them and thus move in “lock- step”.
PROFIsafe over PROFINET
PROFINET cycle time of 32ms. Functional Safety: Wireless Emergency Stopping for the “platoon of vehicles” could be included.
Suspended trains depend on wireless data through slotted waveguide profiles for control and functional safety.
Long travel distances require several RF feeder points and as a result separation of adjacent radio sections.
Challenge
Uninterrupted movement requires seamless roaming.
Problem to be solved
Bridge E carries both control and functional safe- ty data.
Triggered roaming of Bridge E offeres close to zero transition between sections for continoues and uninterrupted movement and thas excellent productivity.
PROFIsafe and LJU UDP-based control protocol.
AMR needs failsafe communication to statio- nary PLC of production line when entering the “production zone”. Roaming the shopfloor AMRs operate in failsafe mode.
When entering certain areas for interacting with machines they need to slow down - loosing their ability to operate in failsafe mode.
A functional safe alternative is required that all- ows for coordination between the robot and the machine.
Challenge
Standard WLAN is not good eough for wireless failsafe communication - in particular in a centra- lized topology with access points and clients.
Problem to be solved
Bridge E allows for a functional safe wireless point to point link between the vehicle and the machine.
During approach the link could be established and taken down again upon departure. PROFIsafe over PROFINET or SafetyNet p
Oversized payload shall be transported by two or more AGVs moving in lock-step.
Challenge
If drives of cooperating AGVs are not synchroni- sed in real-time, the whole application fails.
Wireless Solution
Control: Bridge E enables vehicles (AGVs) to share low-latency controls amongst them and thus move in “lock-step”.
PROFIsafe over PROFINET
PROFINET cycle time of 32ms.
Functional Safety: Wireless Emergency Stopping for the “platoon of vehicles” could be included
Outdated PLC and obsolete wireless connectivi- ty solution needed to be replaced. Wireless data is the reliable alternative to data over slip ring(s). Same applies for green-field deployments.
Challenge
Decentralized (wireless) sensor data acquisition for a functionally safe appliction.
Maintenance crews cannot exchange any parts without the need for TÜV-recertification.
Wireless Solution
Safe sensor I/O ports are being connected to a Pilz PSS4000 Safety PLC utilizing SafetyNet p over wireless with the help of Bridge E.
