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Technical Information Control Techniques and Technology PNEUMATIC DIVISION MATRIX ^^^mmechatronics
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TECHNICAL INFORMATION Flow control techniques Pneumatic solenoid valves may be subdivided into two catgories: digital on/off solenoid valves and proportional solenoid valves. Digital solenoid valves combine their open-closed position with an electric on-off control. Proportional solenoid valves combine a particular position (between open and closed) in a proportional way with a tension or variable-current control device. The volution of technology led to the development of new flow control techniques, which allow the use of digital components instead of proportional ones. Th驨se techniques,...
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TECHNICAL INFORMATION PNM Technique PNM (Puise Number Modulation) technique is based on the features of multiple shutter valves of 750 and 850 Sries. It consists of the gn驩ration of on-off control groups. This means that a PNM control (variable from 0 to n), applied to an n shutter group of equal flow, implies a proportional variation to n of the passing flow. The flow results as: Q = Qn x n where Qn is the rate of flow of only a shutter. The rate of flow may assume n values included between zro flow and maximum flow. When n = 8 the achievable values are just 8. Variation proportional to...
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TECHNICAL INFORMATION Since the higher are readiness and prcision of a System, the higher results the control speed (frequency). Consequently, the PWM control technique requires unusual technical features for the l驩ments to be controlled. Just like computers, where their global speed is due to the operating rate (frequency) of the interior dock. Namely, said technical features are characterized by: extremely reduced response times; Օ very long opration life; insensibility to work at high speed. The importance of the response times is fundamental. Actually, a short response time allows to...
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T ■■■■■■■■■■■■■■■■■I Rules for use not in accordance with the instructions The gnerai characteristics of ail models and their condition of use are referred to in the catalogue pages. When a correct condition of use may be guaranteed, it is necessary to follow the undermentioned instructions. The non-observance of said instructions may generate a quick decay of the original characteristics of the product or irrversible damages, which may compromise the its correct working. 1. Use of non stabilized tensions (except speed-up models) Tension valves higher than limits, indicated in the use...
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