PLC Safety Interlock: Dual-Channel E-Stop on GuardLogix
When a standard interlock is not enough, how to wire and configure a dual-channel E-stop on GuardLogix safety I/O, and the reset rule nobody may break.
Safety PLC
GuardLogix, S7-1500F and the PL/SIL basics: safety inputs, muting, reset logic and how a safety task differs from the standard one.
PLC Chemical Process Control: BPCS, SIS and Interlocks
How the BPCS, the SIS and the package PLC split the work on a batch reactor, with a cause and effect matrix, cascade temperature control and IS barriers.
PLC Conveyor Control: Zone Logic, Jams and PowerFlex
Zone accumulation, cascade start and stop, jam timers that do not nuisance trip, and driving a PowerFlex 525 over EtherNet/IP from a CompactLogix.
What is IEC 61508, IEC 61511, EN 50126, EN 50128 ve EN 50129 standarts
Overview of the functional safety standards IEC 61508 and IEC 61511, and the railway RAMS standards EN 50126, EN 50128, and EN 50129.
Safety Add-On Instructions
Explains how safety Add-On Instructions differ from standard ones in GuardLogix, including ladder-only logic, safety signatures, and locking rules.
Functional Safety PLC: Risk Assessment to PLd Architecture
How functional safety works on a PLC job: the ISO 13849-1 risk graph, PLr, category 3 architecture, MTTFd, DC, CCF, a PFHd budget and SISTEMA.
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