When an automated conveyor system begins showing its age, replacing the entire system may seem like the obvious solution.
But the conveyors themselves may not be the source of the problem.
In many facilities, existing mechanical equipment can continue serving the operation while controls, software, communications, or other technologies become outdated or harder to support. In those situations, a conveyor control system upgrade may offer another path forward.
By separating the condition of the physical conveyor equipment from the condition of its controls, facilities can make a more informed decision about what actually needs to change.
When Does a Conveyor Control System Need an Upgrade?
Controls can become an operational limitation even when conveyors continue moving product successfully.
Aging PLCs and control panels may become increasingly difficult to maintain. An older system may offer limited diagnostics or make it difficult for teams to identify the source of a fault. Existing controls may also struggle to accommodate new equipment, software, or changing operational requirements.
Other signs can be less obvious.
Perhaps the facility has expanded around an older control architecture. Maybe multiple additions over time have made the system more complex. Or the operation now requires greater visibility than the original control system was designed to provide.
These situations do not automatically mean the entire conveyor system needs replacement.
Instead, they are signals that the controls and the mechanical equipment should be evaluated independently.
In freight and parcel environments, Alliant has identified aging PLCs, outdated control panels, limited system visibility, inconsistent equipment communication, and controls that no longer match operational needs as common challenges facilities may encounter.
What Parts of an Existing Conveyor System Can Be Modernized?
A conveyor control system is made up of interconnected technologies, which means modernization can take different forms depending on the facility.
An upgrade may involve PLC programming, control panels, HMI interfaces, control logic, system communications, diagnostic capabilities, software, or the integration of new equipment.
A broader conveyor automation retrofit may involve migrating an older controls platform while retaining portions of the existing conveyor infrastructure.
There is no universal list of components that should be replaced during every project. The correct scope depends on what the existing equipment supports, how the system operates, and what the facility is trying to accomplish.
This is one reason a controls-focused evaluation is useful before assuming full replacement is necessary.
Alliant’s warehouse and distribution capabilities include conveyor and sorter control systems, warehouse control software, RFID integration, HMI interfaces, platform migration, re-control, and customer support. The company also specializes in integrating new hardware and software with legacy control systems.
How Can You Upgrade Conveyor Controls While Minimizing Downtime?
For an active operation, deciding what to modernize is only part of the challenge.
The other question is how to make the change without creating unnecessary disruption.
A conveyor control system upgrade should account for the way the facility actually operates. Engineering, programming, testing, installation activities, commissioning, and final cutover all need to be coordinated around the project and operational requirements.
Preparation is especially important when new controls will interface with existing equipment.
Teams need a clear understanding of the current system before changes are made. Programming and system functionality should be tested as thoroughly as practical before final turnover. Planning should also identify where existing and new components will interact.
Alliant supports projects through engineering, programming, testing, commissioning, and startup and has documented experience performing re-controls and system upgrades during planned downtime in freight and parcel operations.
The objective should not be to claim that downtime can always be eliminated. Rather, a well-planned approach can help facilities manage the operational impact of modernization and reduce unnecessary disruption.
When Is a Controls Upgrade Better Than a Full Conveyor Replacement?
The answer ultimately depends on the condition of the complete system.
If the conveyor infrastructure continues to meet the facility’s mechanical and operational requirements but the control system is becoming difficult to support, modernization may allow the facility to retain valuable equipment while addressing technology limitations.
If both the controls and the underlying conveyor infrastructure are no longer appropriate for the operation, a larger replacement project may make more sense.
Facilities should consider questions such as:
- Is the existing equipment still suitable for the application?
- Can replacement components for the control system be supported?
- Does the system provide the visibility operations and maintenance teams need?
- Can current controls integrate with planned equipment or software?
- Will the existing architecture support anticipated operational changes?
The answers can help distinguish between a targeted controls upgrade, a larger re-control, and full system replacement.
Alliant supports conveyor control systems, PLC programming, control panels, system upgrades, software improvements, re-controls, legacy integration, and commissioning across its automation markets.
Modernization is ultimately about putting investment where it creates the most operational value—not automatically replacing every component simply because part of a system is aging.
Your conveyor system may not need to be replaced to perform better. Alliant Technologies can evaluate your existing controls and help develop an upgrade or re-control strategy around your current infrastructure and operational requirements. Contact Alliant Technologies to discuss your conveyor control system.