question
In a lights-out factory scenario, what redundant systems do you absolutely need for servo drives and PLCs when there's literally no human on-site for 72 hours?
answer
question
StevenAdams
2025-12-11
answer
Hey there! Great question about lights-out factory redundancy. When you're running a factory with no humans on-site for 72 hours straight, you absolutely need rock-solid redundancy for both servo drives and PLCs. Here's what's essential:
For PLCs, you need hot standby redundancy - that means having two PLC CPUs where one is active and the other is fully synchronized and ready to take over instantly if the primary fails. No downtime allowed! You'll also want redundant power supplies for the PLCs, ideally with UPS backup and possibly a generator for longer power outages.
For servo drives, you need redundant power feeds and ideally redundant drives for critical motion axes. The key is having automatic switchover capabilities so production doesn't stop. Don't forget redundant cooling systems too - those drives generate heat!
Network redundancy is crucial - dual networks with automatic failover. And you absolutely need remote monitoring with alarms that can alert off-site personnel if anything goes wrong. Think of it like having a digital babysitter watching over your factory while you're away!
The bottom line: In a true lights-out scenario, you can't afford any single point of failure. Everything critical needs a backup that can take over automatically.
Quickly browse the latest questions and answers
Hey there! As a fellow purchasing manager, I totally get your frustration with 'zombie parts' - those...
check the detailsHey there! As a purchasing director facing that 6-month lead time crunch, I totally get the pressure to look at secon...
check the detailsHey there! As a purchasing director, I've learned to be pretty thorough when vetting new automation component...
check the detailsAs a purchasing director facing this classic inventory dilemma, I'd recommend a multi-layered strategy that b...
check the detailsI feel your pain - those 6-month lead times on Siemens components are brutal and can really disrupt operations. Here&...
check the detailsThat's a classic purchasing dilemma I face all the time! When dealing with high-cost, long-lead-time critical...
check the detailsHey there! I totally get the frustration of being locked into single-source dependencies, especially with critical co...
check the detailsHey there, I totally get your dilemma - it's a tough spot to be in! As a purchasing director facing 6+ month ...
check the detailsI totally get that feeling - single-source dependencies for critical automation components can be a real source of st...
check the detailsHey there! That's a really tough situation you're facing - going from 2 weeks to 6 months lead time o...
check the details