|The Semelex II Safetimeter Checks Stop Time, Safety Distance and More...|
(Ts) is the time interval from the initiation of the stop signal to
the complete stop of the press. Stop time can change as a result of
wear, speed, machine use, solenoid valve response, die weight and other
State and Federal guidelines require periodic checking of stop time.
Safety Distance (Ds) is the distance between the location of two-hand control or personnel safety devices and the pinch point closest to the operator.
OSHA regulation 1910.217 (c)(3)(iii)(e) expresses Safety Distance using the following formula:
Ds = Ts x 63 inches/second
When selected, the Semelex II Safetimeter will display the minimum safety distance per the OSHA formula.
Counterbalance can be easily checked by
measuring the down- and up-stroke stop time. When these two times are
the same, counter-balance is properly set.
Personnel Safety Devices like light curtains or safety mats can be tested using the Auto-Hand and Auto-Flag to verify reaction time per the OSHA formula. The overall response time of the safety device, press control E-Stop circuit and the clutch brake mechanism are checked when the Auto-Hand or Auto-Flag accessories are used.
Optional Remote Tachometer Set consists of a tachometer on a magnetic base, two drive wheels and one drive cone. This sensor assembly is used to monitor the stopping time of conveyors or robots that cannot be monitored by the standard position / velocity sensor.
Optional Manual Start Switch is used to simultaneously initiate an E-Stop condition and the stop time calculation in the Safetimeter. The switch can be placed upon a safety mat used for machine guarding. Stepping on the switch synchronizes the stop time calculation with the safety mats E-Stop output signal.