13.255 H L S H L S DRIVING STATE The driving state is started when the linkage forces push button (PB1) closed to energize V1, V3, V4, V5 and CR1. The contact of CR1 closes to lock power on these devices when PB1 re-opens as the drive movement starts. When V1, V3, V4, and V5 are energized the flow pattern is as illustrated on this drawing. The diamond shaped actuator, the displacement cylinder and the cushion tank experience the same pressure. The diamond shaped actuator develops about 10% to 15% greater total force at its tip than the counter force developed in the displacement cylinder. Each of the four faces of the diamond shaped actuator have the same area as the displacement cylinder's boundary face. This causes more fluid to be driven out of the displacement cylinder than is required to drive the diamond shaped actuator for the same linear travel. About 99% of the fluid driven out of the displacement cylinder flows to the diamond shaped actuator and about 1% of the fluid flows into the cushion tank. The differential in force between the diamond shaped actuator and the displacement cylinder may be used to drive any mechanical device external to this machine, such as a generator or pump. When the linkage forces push button (PB2) open V1, V3, V4, V5 and CR1 are deenergized which causes the driving state to stop. 120V 24V CUSHION TANK HIGH PRESSURE AIR VALVE PRV DEPRESSURIZATION PISTON 3# TO 7# NOTE; THE POWER DIFFERENTIAL OUTPUT INCREASES WITH INCREASED PRESSURE V3 V4 V5 C C NC NC NO NO NO NC PB3 PB2 CR1 PB1 RETURN SPRING DISPLACEMENT ACTUATOR MANUAL VALVE OPEN DIAMOND-SHAPED ACTUATOR LINKAGE RETURN SPRING 1 2 2 4 PB1 CR1 2 V1 4 2 V3 4 2 V4 4 1 CR1-1 PB2 1 5 5 2 PB3 1 3 NOTE: ENERGIZED DE-ENERGIZED V1 V2 C NC NO NOTE; PB1, PB2 AND PB3 ARE MOMENTARY PUSH BUTTONS. PB2 IS NORMALLY CLOSED. PB1 AND PB3 ARE NORMALLY OPEN. NOTE: PB3 IS PUSHED CLOSED, ENERGIZING V2, DURING PART OF THE DRIVE CYCLE. THIS HAS NO IMPACT ON THE OPERATION AS THE NO AND NC PORTS OF V2 ARE DEADHEADED BY V3 AND V4 AT THIS STAGE OF OPERATION. PRESSURE TRANSMITTER TO LOGGER PRESSURE TRANSMITTER 2 V5 4 2 V2 4
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