English Tech/Engineering Manufacturing

I’m translating a work instruction about using metal detectors in a confectionery factory.

,,Rejection confirmation
There are different types of rejection mechanism in place on the Metal/ X-Ray Detectors:
i. Air Blast/ Pusher Arm: product is physically pushed off the conveyor into the metal reject bin

ii. Retracting Belt (closed default position): belt retracts to allow the product to drop into the reject bin below. If the mechanism is disabled e.g. due to a fault or during a failsafe test, the conveyor will default to a closed position

iii. Belt stop mechanism for certain products that are exposed to damage if rejected by standard reject mechanisms such as 2kg characters and egg products running at a very low run rate. This method can only be used by authorisation from the Technical department and the detector set up by a trained engineer. ‘’

I am not clear about the meaning of ‘’low run rate’’. Does this imply that these particular products travel very slowly on the conveyor belt and their number in a batch is relatively low?


Thank you