Machine safety - SmartRelay AX Classic

Machines can pose considerable hazards:

  • Cut injuries
  • Burns
  • Electric shocks
  • Laser radiation
  • Crushing injuries

For safety reasons, only qualified people should therefore be allowed to operate hazardous machines. Unauthorised persons must not be able to put hazardous machines into operation.

An option to switch off the machine without authorised identification media further increases operational safety.

DANGER

danger

Risk of injury from incorrect programming

The SmartRelay AX Classic is not suitable as a stand-alone disconnecting device. A contactor activated via the controller must never be the only means to switch off a machine.

  1. Use the SmartRelay AX Classic as an additional disconnecting device only, not as the sole one.
  2. Use the actuated contactor in a series circuit with the machine's emergency stop switch only.

IMPORTANT

Damage due to equipment vibrating

The SmartRelay AX Classic is not suitable for use on equipment which vibrates.

The SmartRelay AX Classic provides effective protection to prevent unauthorised persons from operating dangerous machines and injuring themselves in the process. The reader is fitted to the machine requiring protection and connected to the controller. The relay in the controller does not switch until an authorised identification medium has been activated on the reader, thus unblocking the power supply to the machine by switching the contactor. Only then can the machine be switched on at the safety switch. There are two options for installing the reader:

  • The reader is installed in the machine housing. This version is hidden from view and offers effective protection against dirt, the weather, fluids and mechanical impacts, depending on the machine housing.
  • The reader is fitted on or next to the machine housing. This version is visible on the outside and makes it easier for users to position their identification medium. The read range is better compared to a reader fitted inside a (metal) housing. The anti-vandalism frame (SREL3.COVER) ensures protection against vandalism and sabotage.

The reader can be powered by the controller and does not require a separate power supply unit in this case. Long cables or cables with excessively thin conductor cross-sections will cause a drop in voltage. Malfunctions may occur if the voltage drop becomes too great. See Information on cabling for details and possible solutions.

Communication between the reader and the controller is encrypted and secured. This means that no one can tamper with the data. The data read is only processed and evaluated in the controller.

The machine can only be put into operation if an identification medium is used on the reader. In the event of damage, the access list (for ZK variants only) will allow management to identify exactly who operated the machine last and take appropriate measures.