There are two models in the PCS (Positive Contact System) range of tool monitors.
PCS
100
Put simply, the PCS 100 detects the presence or absence of an object. Normally
it would be fitted to a machine tool and used to detect whether a drill is
broken or not.
Operation is simplicity itself. Upon receiving a start signal, the sensing needle swings to contact with the drill. If the drill is present, it prevents the sensing needle reaching it's end stop. In this condition, an 'OK' signal is output to the machine. If the drill is broken, the sensing needle will swing to it's end stop and output a fault signal to stop the machine. A separate output is also available for connection to a lamp or buzzer to alert the operator.
Features
PCS
250
The PCS 250 is a 'teach' type sensor. Upon pressing the 'teach' button,
the sensing needle swings to contact the unbroken tool. When contact is made
the PCS 250 stores the position in it's memory.
During operation, the PCS 250 will receive a start signal from the machine. When this happens, the sensing needle swings to contact the tool. Providing the sensing needle swings to the same position, an 'OK' signal will be output. If the tool is broken, bent or has a 'birds nest' of swarf around it the unit will output a fault.
Features
The
PCS 100 is for simple
'GO-NO GO' detection.
The PCS250 is a 'smart' tool monitor for more demanding roles.

Click here to see 'How
it Works' video
(requires Windows Media Player - broadband connection recommended)

