Conveyor Diverter

A conveyor diverter moves product off a transport line onto a spur, lane, or takeaway at a specific point in the flow. The mechanism sets the ceiling on rate and product handling. The controls decide whether you hit that ceiling, because a divert only works if the system knows which item is passing, where it is, and when to fire. HOJ engineers both sides in-house as part of its conveyor control systems work.

Divert Mechanisms and Their Limits

Divert style also sets damage risk. On a sliding shoe sorter, several shoes share the push so force spreads across the case, and the wrap-around shoe breaks away in a jam to protect product and equipment.

Gap Control Is What Makes Diverts Land

Most divert failures start upstream. Cartons have to arrive with the right spacing, and gapping conveyor ahead of a merge conveyor or sorter runs at a different speed than the line to pull that gap. Blow-through gapping works for similar-size product, and optimization gapping uses sensors to speed up or slow down for mixed sizes. When gaps fail, cartons arrive side by side, which causes downstream sorter no-reads and jams.

That is why divert accuracy problems are rarely solved at the divert. The fix is usually in the metering and merge logic feeding it.

Tracking From Scan to Divert

The sequence is fixed: product is isolated at induction, a recognition station scans the barcode to identify each item, and the sorter discharges it at the lane assigned to that order, as described in published sortation research.

Between the scan and the divert, the control system holds the item's identity and position. A PLC reads inputs from sensors, executes logic, and writes outputs to motors and field devices on a scan cycle typically running 1 to 50 milliseconds, which is the resolution available for firing a divert at rate.

The Control Elements Behind a Divert

Conveyor controls are the logic layer that turns equipment into a managed system: a PLC issues run, stop, direction, and routing commands, photoeye sensors detect product presence to start, stop, and space items, motor control drives belts or 24V motor-driven rollers, and the control panel houses the protection, drives, and I/O. The line takes routing from the WMS or host and reports throughput and faults back.

Sortation induction and merges are named control functions in their own right: spacing and metering cartons into a sorter at rate, and coordinating multiple lines and diverts through one logic set.

No-Reads, Jams, and Recovery

Every divert design needs an answer for the item that cannot be identified or missed its lane. Side-by-side arrivals and read failures are predictable events, not exceptions.

Diagnostics decide how fast you recover. Well-built controls surface zone faults and jams so troubleshooting does not require tracing I/O. HOJ writes fault logic so a technician clears the fault from the HMI without opening the PLC.

Guarding at Divert and Transfer Points

ASME B20.1 carries dedicated sections on guards and guarding, controls, and transfer, loading, and discharge points. Diverts create exactly those hazards: moving shoes, rising rollers, pinch points at the spur, and access needs for jam clearing. OSHA machine guarding rules require protection from nip points and rotating parts in the machine area, with guards affixed to the machine where possible.

Jam clearing inside a guard is servicing under the lockout standard, so energy isolation and procedures belong in the divert design, not in the operating manual.

Retrofitting Divert Controls on an Existing Line

Older sortation often runs mechanically sound hardware on end-of-life controls. A planned PLC migration moves those controllers to modern platforms on your schedule, with field wiring left in place.

The same logic applies to adding lanes. Because HOJ builds the panel, writes the code, and installs the system as one project, a new divert is a controls change with known documentation behind it rather than a reverse-engineering exercise.

What HOJ Delivers

HOJ designs conveyor and automation controls in-house, writing the PLC and zone logic, building the control panel, and integrating the line with warehouse software. Sorters are selected across manufacturers rather than a single line, and mechanical, electrical, and installation work is handled by HOJ teams without subcontractors.