Proportional amplifier
specifications ( Figure P 31 ). Position-controlled valves generally feature the feedback controller and displacement transducer with a cable break monitor ( Figure P 32 ). Figure P 31: Electronic control system [...] ramp generator 2 step function generator 3 totaliser 4 flow control valve 5 clock 6 power amplifier 7 power supply unit 8 differential amplifier R1 to R4 = target values R5 = bias current magnet B R6 =
Safety regulations
institutions for statutory accident insurance and prevention include: ZH 1/457 and ZH 1/52 and ZH 1/74; VBG 7n5.2 Hydraulic presses, VBG 8 Winches, Lifting and Hoisting Devices, VBG 16 Compressors, VBG 40 excavators [...] DIN standards and guidelines: DIN 24 295 Pumps and pumping sets, DIN 24 346 Hydraulic systems, DIN 31 000 General safety guidelines, VDI guidelines 3229 Technical design of machine tools, pneumatic equipment [...] for electrical engineering, as defined in the German Accident Prevention Regulations UVV VGB 1 and 7 for general mechanical engineering. VDE 0113 and VDE 0160 also apply.