For such dispersion machines as dissolvers or basket mills, the European Directive 2006/42/EC requires not only purely mechanical safety devices but also control-related redundant safety measures. The rotating drive shaft must be protected by a shaft protection pipe. At a certain drive power or above, the container opening must also be protected by a cover or safety guard.
The machine may only be put into operation if:
- a container is available and securely clamped,
- a dissolver disc or milling basket is within the container,
- safe stop of the drive motor can be ensured by the STO function (Safe Torque Off),
- the electrically driven lifting column can be securely shut down.
A complete set of safety devices in the machines must be used to meet the functional safety requirements set forth in EN ISO 13849-1. Although these functions are mainly implemented with electromechanical auxiliary components, we integrate the DISPERSAFE® safety module, specially developed for this purpose, into our DISPERMAT® machines. This smart and processor-controlled module guarantees the highest safety standard for dispersing machines.
Our DISPERSAFE® safety module enables the use of variable container sizes by “teaching in” container parameters on the control panel simply and conveniently.
|State||LED red||LED yellow||LED green|
|Normal operation (motor enabled)||off||off||on|
|SF1 (lifting column outside the working range)||off||on||off|
|SF2 (ZBS open)||on||off||off|
|SF3 (emergency stop activated)||on||on||off|
|SF4 (working range limit reached when motor is running)||off||on||on|
|Limits not defined (end positions and working range)||off||flashes||off|
|Wait for initialization||off||flashing alternating with green||flashing alternating with yellow|
|Safety check error, RAM ROM error, communication error||flashes||off||off|
|Test mode||flashing alternating with yellow||flashing alternating with red||off|