24V MDR zero-pressure accumulation conveyor
One 24 V motor roller per zone: loads queue without touching, zones run only when there is a load. For buffering and releasing cartons and totes on demand.
One 24 V motor roller per zone: loads queue without touching, zones run only when there is a load. For buffering and releasing cartons and totes on demand.
A 24 V MDR (motor-driven roller) conveyor is divided into zones. Each zone has one motor roller, with motor and gearbox inside the tube, driving several idler rollers, and a photo-eye at the zone. When the zone ahead is occupied, the zone behind stops and waits, so loads never touch or push each other; release can be one by one or in batches. Empty zones stand still, so the line is usually quieter and uses less energy than a conveyor that runs all the time. Motor rollers and zone control cards are also supplied on their own as spare parts.
Typical uses
- Queues in front of picking stations and packing benches
- Carton and tote transport in e-commerce, parcel and pharmaceutical distribution centres
- Queuing and timed release ahead of scanning, weighing and sorters
- Tote loops at the infeed and outfeed of multi-level and tote storage
How to choose
- The carton length range sets the zone length: the shortest load must rest on at least three rollers, the longest must fit in one zone
- The heaviest load sets zone capacity and motor-roller torque
- Whether you need queuing, and whether release is single or in batches
- How it talks to the host system: hard-wired I/O or industrial Ethernet
When it is not the right choice
- Single loads above about 50 kg: size a heavy-duty roller conveyor such as chain-driven live roller instead; pallets go on a pallet conveyor system
- Polybags and loads with uneven bottoms: use a belt conveyor
- Wash-down, hot or freezer areas: check each motor roller's protection class and temperature range on its datasheet
Key figures
| Zone length | About 450–900 mm, set by the load length |
|---|---|
| Speed | About 0.3–1.0 m/s |
| Load per zone | About 45 kg (depends on the motor roller) |
| Motor roller | Ø50 mm, 24 V; 48 V models also available |
| Roller pitch | About 75–150 mm |
| Control | A photo-eye in every zone; each control card manages one or more zones, depending on the model, and runs the zero-pressure logic |
Figures are typical configuration ranges; exact specifications are set per project.
Options
- Curves, merges and right-angle transfers on the same 24 V drive
- Barcode reading and weighing sections
- Release modes: single release or batch release
- Interfaces: I/O, EtherNet/IP or PROFINET (depending on the card)
- Motor rollers and control cards supplied separately as spares
Scope of supply
- Machine, drives and control cabinet, assembled and dry-run tested before shipping
- The equipment's own control and fleet software; interfaces to your existing WMS / ERP as the project requires
- Drawings: general arrangement, foundation and anchor plan, electrical schematics
- Conformity documents for the equipment and the whole line, the split of responsibilities and the acceptance criteria are set out in the contract according to the project scope
- Spare-parts list and wear-part recommendation; a first batch can ship with the equipment
- Factory acceptance (FAT): attend in person or follow by live video
- Installation, commissioning and operator training can be included in the offer
What we need for an offer
- Load size range (shortest, longest) and the heaviest weight
- Loads per hour and how many need to be buffered
- Layout drawing and conveyor height
- Host system (WMS, WCS or PLC) and interface
- Ambient temperature and humidity