Devices
Two-Hand Control Devices
The two-hand control device requires that the operator press down and hold both control buttons at the same time to activate the machine. This kind of control requires a part-revolution clutch, brake, and a brake monitor if used on a power press. With this type of device, the operator's hands are required to be at a safe location (on control buttons) and at a safe distance from the danger area while the machine completes its closing cycle.
Two-hand control devices by Rockford Systems
Two-Hand Trip Devices
Two-hand trips are used as a safeguarding device on a full revolution clutch power press only. This device requires the operator to press down the two trigger buttons at the same time activate machine operation. It does not require the operator to hold the buttons down with continued pressure.
The palm buttons must be located far enough away so that after the press is tripped and the operator releases both palm buttons, the operator cannot "beat the ram" or reach into the point of operation or other pinch points before the dies close.
Two-Hand Control Device
Two-Hand Trip Device
Knowledge Check Choose the best answer for the question.
2-5. Which device requires the operator to push and hold down both control buttons while the machine completes its closing cycle?
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