EDS300

Electronic Pressure Switch EDS 300 Application: The EDS 300 is a compact, electronic pressure switch with digital display. Four different output models are available: with one switching point, with two switching points and both models can also have an additional analogue output signal 4 .. 20 mA. The switching points and the corresponding hystereses can be adjusted via keys. For optimum adaptation to a particular application, the unit has many additional adjustment parameters, e.g. switching delay times, N/O / N/C function of the outputs. The main applications of the EDS 300 are pressure and critical value indications in hydraulics and pneumatics and anywhere where a high switching frequency or a constant switching accuracy places too high a demand on a mechanical pressure switch. The unit is ideal for the construction of accumulator charging circuits or pump and compressor controls. Special features: z Built-in pressure sensor with DMS on stainless steel membrane zCompact, robust construction z Accuracy class 1% z 3-digit digital display z Simple operation due to key programming z Switching points and switch-back hystereses can be adjusted independently zWindow function zMany useful additional functions 2 Circuit diagram: Model with 1 switching output Plug to DIN 43650, 3 pole + earth Model with 2 switching outputs 4 pole Binder plug, series 714 M18 Model with 1 switching output and 1 analogue output 4 pole Binder plug, series 714 M18 4 pole plug, M12x1 4 pole plug, M12x1 4 pole plug, M12x1 Model with 2 switching outputs and 1 analogue output: 5 pole plug, M12x1 Setting options: All the settings available on the EDS 300 are combined in two easy-to-follow menus. To prevent unauthorised adjustment of the unit, a program disable can be activated. Setting ranges of the switching points and/or switch-back hystereses: Measuring Switching Hysteresis Incre- range point ment* in bar in bar in bar in bar 16 0.3 .. 16 0.1 .. 15.8 0.1 40 0.6 .. 40 0.2 .. 39.6 0.2 100 1.5 .. 100 0.5 .. 99.0 0.5 250 3.0 .. 250 1.0 .. 248 1.0 400 6.0 .. 400 2.0 .. 396 2.0 600 15.0 .. 600 5.0 .. 590 5.0 * All ranges given in the table are adjustable by the increments shown. Additional functions: z Switching mode of the switching outputs adjustable (switching point function or window function) z Switching direction of the switching outputs adjustable (N/O or N/C function) z Switch-on delay adjustable between 0.00 .. 75 seconds z Switch-back delay adjustable between 0.00 .. 75 seconds zChoice of display (actual pressure, switching point 1, switching point 2, peak value, display off) z Subsequent correction of zero point in the range ± 3% FS possible Switching point / switch-back point: The switching point is defined as being the pressure value, which when reached (whilst pressure is increasing), causes a change in the switching output. This output state is maintained until the pressure falls below the switch-back hysteresis allocated to the switching point. The switch-back point is determined by the switch-back hysteresis which has been set (switching point minus switch-back hysteresis = switch-back point). SP = switching point HY = switch-back hysteresis RSP = switch-back point (switching point minus switch-back hysteresis) ON OFF analogue analogue analogue 3 ZBE 06 (for EDS 346) Right-angled plug (4 pole, M12x1) ZBE 06-02 (for EDS 346) Right-angled plug (4 pole, M12x1) with 2 m lead ZBE 06-05 (for EDS 346) Right-angled plug (4 pole, M12x1) with 5 m lead Colour code: Pin 1: brown Pin 2: white Pin 3: blue Pin 4: black ZBE 08 (for EDS 348) Right-angled plug (5 pole, M12x1) ZBE 08-02 (for EDS 348) Right-angled plug (5 pole, M12x1) with 2 m lead ZBE 08-05 (for EDS 348) Right-angled plug (5 pole, M12x1) with 5 m lead Colour code: Pin 1: brown Pin 2: white Pin 3: blue Pin 4: black Pin 5: grey Electrical accessories: ZBE 01 Right-angled plug (3 pole + earth) to DIN 43650/ISO 4400 (supplied with the EDS 345 as standard) ZBE 02 (for EDS 344) 4 pole straight Binder plug, series 714 M18 ZBE 03 (for EDS 344) Right-angled, 4 pole Binder plug, series 714 M18 Mechanical accessories: ZBM 14 connection adaptor G¼ female thread - G¼ male thread for optimum alignment of the pressure switch Seals: Female thread: NBR Male thread: NBR ZBM 300 clamp for wall-mounting the EDS 300 (material: polypropylene) 34.20 26.5 27 .5 25 .5 31 .5 0 hex-SW19 25 .5 a pp ro x. 4 Technical specifications: Input data: Measuring ranges: 16, 40, 100, 250, 400, 600 bar Overload pressures: 32, 80, 200, 500, 800, 900 bar Burst pressure: 300 % FS Output data: Accuracy (display, analogue output): ≤ ±1 % FS Repeatability: ≤ ±0.5 % FS Temperature drift: ≤ ±0.3 % / 10 K zero point ≤ ±0.3 % / 10 K range Analogue output: Signal: 4 .. 20 mA, ohmic resistance ≤ 400 Ω Switching outputs: Type: PNP transistor output Switching current: max. 1.2 A Switching cycles: > 100 million Reaction time: approx. 10 ms Ambient conditions: Temperature range of medium: -25 .. + 80 °C Ambient temperature range: -25 .. + 80 °C Storage temperature range: -40 .. + 80 °C Nominal temperature range: -10 .. + 70 °C mark: EN 50081-1, EN 50081-2 EN 50082-1, EN 50082-2 Vibration resistance: approx. 10 g / 0 .. 500 Hz Shock resistance: approx. 50 g / 1 ms Other data: Supply voltage: 20 .. 32 VDC Current consumption: approx. 100 mA Safety type: IP 65 Hydraulic connection G¼ A to DIN 3852, torque rating 17 .. 20 Nm Parts in contact with medium: stainless steel, Viton seal Material of housing: tube: stainless steel keypad housing: PA6.6 Gf30 Display: 3-digit, 7 segment LED, red height of digits: 9.2 mm Weight: approx. 300 g Note: FS (Full Scale) = relative to the full measuring range Mounting: The EDS 300 pressure switch has a pressure connection with a G¼ A male thread (DIN 3852). It is therefore possible to mount the pressure switch directly inline or onto a hydraulic block. When used in critical applications (e.g. strong vibrations or knocks) the EDS 300 must be mechanically decoupled. A clamp (ZBM 300) is therefore available for wall-mounting. In this case the pressure connection must be by means of a Minimess line. Using the ZBM 14 connection adaptor ensures that the display is visible to the user. 5 Model code: EDS 3 4 X - X - XXX - 000 Series no. (determined by manufacturer) Type of connection, mechanical 4 = G¼ A male thread Type of connection, electrical 4 = 4 pole Binder plug, series 714 M18 only available for output models "2" and "3" (plug not included) 5 = plug to DIN 43650, 3 pole + earth only available for output model "1" (plug ZBE 01 included) 6 = 4 pole plug, M12x1 only available for output models "1", "2" and "3" (plug not included) 8 = 5 pole plug, M12x1 only available for output model "5" (plug not included) Output 1 = 1 switching output (only in conjunction with electrical connection type "5" or "6") 2 = 2 switching outputs (only in conjunction with electrical connection type "4" or "6") 3 = 1 switching output and 1 analogue output (only in conjunction with electrical connection type "4" or " 6 ") 5 = 2 switching outputs and 1 analogue output (only in conjunction with electrical connection type "8") Pressure ranges in bar 016, 040, 100, 250, 400, 600 Modification number 000 = standard Note Special models on request Dimensions: required mounting radius R36 Plug to DIN 43650 3 pole + earth Binder plug, 4 pole series 714 M18 Plug, M12x1 4 pole / 5 pole hex. Note: The information in this brochure relates to the operating conditions and applications described. For applications or operating conditions not described, please contact the relevant technical department. Subject to technical modifications.