April 10, 2026
Most facility managers do not think about their baler's control system until something goes wrong. The machine is cycling, materials are getting baled, and the operation looks fine from the outside. But inside the control panel, an aging Programmable Logic Controller may be working on borrowed time, and the symptoms often appear long before a full breakdown.
Parts may become harder to source, and error codes may appear more frequently. Maintenance technicians spend more hours diagnosing control-related faults than actually resolving mechanical issues. If that pattern sounds familiar at your facility, a PLC upgrade may be the right next step.
What Is a PLC and What Does It Do on a Baler or Compactor?
A Programmable Logic Controller is the industrial computer that manages how your equipment operates. It reads inputs from sensors and switches throughout the machine, processes that information according to its programmed logic, and sends output signals to motors, hydraulic valves, and other components.
On a baler, the PLC system controls the ram cycle, monitors hydraulic pressure, tracks bale weight accumulation, and manages tie-wire sequencing. On a compactor, it handles loading sequences, ram travel limits, and the safety interlocks that protect both the equipment and the operators working around it.
Every function your equipment performs runs through that controller. When the PLC is functioning well, the machine operates predictably and efficiently. When it begins to fail or has simply aged beyond the point where it can be reliably supported, the consequences show up across the entire operation.
Why PLC Systems Become a Liability Over Time
Industrial PLCs are built to be durable, and many facilities are still running control systems that are 20 or even 30 years old. That longevity is a genuine feature of well-built industrial hardware. Over time, however, aging control systems create a predictable set of problems that become increasingly costly to manage.
Replacement parts become unavailable. Manufacturers eventually stop producing components for older platforms. When a processor card or I/O module fails on an obsolete PLC system, sourcing a replacement often means searching third-party markets or waiting weeks for refurbished parts. Every hour the equipment sits idle has a direct cost to your operation.
Software support ends. Older PLC hardware runs on software platforms that manufacturers no longer update or support. This limits your ability to make programming changes, adapt to new operational requirements, or get technical assistance when something goes wrong.
Fault diagnosis becomes difficult. Modern PLC systems provide detailed fault logs with timestamps and plain-language descriptions. Legacy systems often include a blinking indicator light and a numeric code that requires a paper manual for interpretation. That gap slows troubleshooting and makes it more expensive, particularly when the technician who originally programmed the machine is no longer with the company.
Integration with newer equipment becomes impossible. Facilities that have upgraded other machinery or added monitoring technology often find that their legacy PLC cannot communicate with newer systems. That limitation prevents any meaningful automation or remote monitoring from being added to the operation.
5 Signs Your Baler or Compactor Needs a PLC Upgrade
Aging equipment does not always need immediate attention, but the following signs indicate that a PLC upgrade has moved from a future consideration to a near-term operational necessity.
1. Unexplained faults are occurring with increasing frequency. When a machine stops for an error that clears itself on reset, that is not normal behavior. It is a signal that the control system is no longer processing inputs and outputs reliably, and the fault frequency will typically worsen over time without intervention.
2. Replacement parts for the existing PLC are no longer readily available. Contact your current PLC manufacturer or distributor and ask directly about part availability and support timelines. If the answer involves discontinued product lines, long lead times, or third-party-only sourcing, your system is already in a vulnerable position that one hardware failure could make critical.
3. Your team can no longer get technical support for the platform. When a controls supplier can no longer provide documentation, programming support, or application assistance for your current platform, your team is effectively on its own when a control-related issue arises. That situation carries significant operational risk, particularly for facilities operating multiple shifts or under tight production schedules.
4. Unplanned downtime is trending upward. Track your unplanned downtime over the past 12 months and identify the root cause for each incident. If a significant portion of the cost can be traced to control-related faults rather than mechanical wear, the PLC is the common factor driving that cost, and a PLC upgrade is likely the most direct way to address it.
5. You want to add capabilities that the existing system cannot support. Remote monitoring, improved bale weight tracking, cycle count reporting, and operator interface improvements are all achievable on modern PLC platforms. If your current system cannot accommodate these features, an upgrade is the path forward.
What a PLC Upgrade Actually Involves
A PLC upgrade is not simply replacing one controller with another. Executed properly, it is a full modernization of the equipment's control environment that requires careful planning, technical expertise, and thorough commissioning before the machine returns to production.
The process typically includes a complete assessment of the existing control system and documentation of the current program logic, selection of a new PLC platform suited to the equipment type and the facility's operational goals, rewriting or migrating the control program to the new hardware, physical installation of new hardware including panels, wiring, and updated operator interface screens, and full commissioning with testing across all operating modes before the equipment is returned to service.
At Crigler Enterprises, PLC upgrade work is performed by technicians who understand both industrial control systems and the specific behavior of recycling and waste handling equipment. That combination is important. A controls contractor who is unfamiliar with how a two-ram baler cycles, how a compactor's safety interlocks must function, or how a shredder responds under different load conditions may produce a technically sound installation that still causes operational problems. Getting both sides right is what protects the investment.
What Facilities Gain After a PLC Upgrade
Facilities that complete a PLC upgrade on their balers and compactors consistently report the same outcomes across operations of different sizes and configurations.
Fault diagnosis becomes faster because current systems log errors with precise timestamps and descriptions that maintenance staff can act on immediately. Replacement parts are available through the manufacturer's active support channels rather than secondary markets. Operators gain better visibility into machine status through updated interface screens that display real-time information, eliminating the need for manual checks. And the equipment runs more consistently because the control system is no longer compensating for degraded hardware.
For high-volume operations running multiple shifts, the reduction in unplanned downtime alone often offsets the upgrade cost within the first year of operation.
PLC Upgrade vs. Full Equipment Replacement
This is the question most operations managers work through before committing to either option. If the equipment is mechanically sound and the primary source of downtime and maintenance cost is the control system, a PLC upgrade is almost always the more cost-effective path. The mechanical platform is proven and preserved, while the controls are brought up to current standards.
If the equipment has significant mechanical wear beyond the controls, recurring issues that a new machine would resolve, or capacity limitations that the current unit cannot meet, full replacement may be the better investment. Crigler Enterprises can walk through that evaluation with you before any commitment is made, so the decision is based on a clear picture of the equipment's actual condition.
Ready to Talk Through Your Options?
If your baler or compactor shows any signs of the issues described above, planning ahead is far better than responding to a complete control system failure at a critical moment in your production schedule.
Crigler Enterprises has provided PLC upgrades for recycling and waste handling equipment across Georgia, Florida, and Alabama for more than 50 years. Our team handles the full process from initial assessment through final commissioning, with the goal of returning your equipment to reliable, supported operation.
Contact us today to schedule an assessment or discuss whether a PLC upgrade is the right move for your facility.
