For a part revolution press, once the cycle is initiated, the press can be stopped by signaling the press to disengage the clutch and apply the brake. For a given part revolution press, the total cycle time is 1 second. The time it takes for the die to close once the cycle has been initiated is 0.5 seconds.
a. If the total stop time for a given press equipped with a set of 2-hand controls, as the safeguarding device, is 350 milliseconds, what is the safe distance between the point of operation (hazard zone) and the set of 2-hand controls?
b. What is the safe distance if a 2-hand trip device is used as the safeguarding device in place of the 2 hand-controls?