81552002 Crouzet

Pneumatic logic components www.crouzet.com 41General characteristics Operating fluid flow graphs - Compressed air or inert gas. Conditions of use of passage (mm) - Operating pressure 2 at 8 bars (except for special conditions). - Fluid: Filtered air to 50 microns - non lubricated. - Operating temperature from - 5 C to + 50 C (under + 5 C the P. supply pressure : dew point must be below 10 C for the application). 4 bars - For optimum performance, the elements should be inter-connected by air supply tubing with an internal diameter at 2.5 mm. Mounting recommendations - The elements should be mounted and piped in a clean atmosphere in order to prevent any form of pollution entering the system. - Minimum torque for element fixing screws: 5 cm/kg. - maximum torque for element fixing screws: 10 cm/kg. Characteristics common to all elements in the modular system - The characteristics have been obtained with a supply pressure at 6 P. supply pressure: bars. 6 bars - The flow in NI/min is the number of litres of air at normal atmosphe- ric pressure obtained with the output open to atmophere and the supply pressure at 4 bars - The consumption in NI/min is the number of litres of free air neces- sary for the unit to function. - kV = the flow coefficient of the equipment. Flow 7 - Mechanical life > 10 operations. (NL/mn) Module with auto reset Sequencer modules Operation results from the combination of a sequential cycle. A system comprises individual modules which are joined together by means of a sub-base. Each module has a memory which delivers an output signal and receives an input signal. An indicator on each module allows the operator to monitor the pro- 4 gress of the cycle and identity quickly and easily any fault which may occur. Brake This returns the memory spool to the reset condition only when the supply is lost Shift register The general principle is to advance the sequencer step by command impulses to the inputs of the even steps, alternating with the command impulses to the inputs of the odd steps. Used for example on a transfer machine to shift the informationbad componen collected at a test-test steps further along the machine Operation results from the combination of three functions (memory, to a reject station. AND and OR) which constitute each module. Function diagram The memory activates the output and gives priority to the reset signal. The AND element ensures the transition to the next module but only if an input signal is present. The OR element ensures the resetting of all previously operated modules Function diagram Auto reset sequencer module sequencer module with maintained reset Brake This maintains the memory spool in position only when the supply is lost. www.crouzet.com 42