Electronic Pressure Switch EDS 300 User manual Stand 10.11.
1. Functions of the EDS 300 Depending on the model, the unit offers the following functions: • Display of the actual pressure, maximum value or a switching point. • Switching the switching outputs according to the pressure and the pre-set switching parameters. • Analogue output • Menu for basic settings (adapting the EDS 300 to the particular application) • Two different types of programming enable Three different output models are available: • EDS 300 with 1 switching output (1.
After switching on the supply voltage, the unit briefly displays “EdS” followed by the current pressure. 2s In the basic settings the display can be altered. For example, the maximum value can be permanently displayed. This is the largest measured value which has been recorded since the unit was switched on or was last re-set. A switching point can likewise be permanently displayed or the display can be set to be dark. Depending on the setting, "TOP", "S.P. 1", "S.P.
5. Output function 5.1 Switching outputs The EDS 300 has 1 or 2 switching outputs. The following settings can be made under the basic setting: 5.1.1 Switching point setting (SP) One switching point and one hysteresis can be set for each switching output. The respective output switches when the pre-set switching point is reached and switches back when the pressure falls below the switch-back point.
• Press "mode" key • "S.P.1" or "hi.1" is displayed • Keep pressing the "mode" key until the required parameter is displayed (depending on the basic setting: "S.P.1", "h.Y.1", "S.P.2", "h.Y.2", "hi.1", "Lo.1", "hi.2" or "Lo.2"). • After 2 seconds the actual setting flashes. or the keys to alter the setting. • Use the • Use the "mode" key to call up other parameters, if required, and alter the setting using the and the keys.
In order to adapt the unit to a particular application, the function of the EDS 300 can be altered via several basic settings. These are combined in a menu. 6.1 Altering the basic settings Important note: when the menu is activated no switching operations are carried out. Switch off supply voltage or disconnect the unit from the supply voltage. mode mode mode 3s press “mode” key and hold down.
Switch-off delay switching output 1 (Toff 1) 0.00..75s 0 ACT/ Top/ S.P.1/ S.P.2/ OFF ACT YES/ NO NO YES/ NO NO Time in seconds which must elapse, once the pressure has fallen below the particular switch-back point, before switching will occur. Switching output 2, as above Primary display (Primary) Display value which should remain permanently in the display: “ACT.”: base pressure “Top”: pressure peak value “S.P.1” or “S.P.
7. Programming enable The unit has 2 types of programming enable which must both be set to "ON" to change the settings. The operating programming enable can be set or removed during operation. It provides protection from unintentional alteration. A programming disable via the main programming enable has the effect that no change to the settings can be carried out during operation. This serves, for example, as a safety function or as protection against unauthorised alterations. 7.
8. Error messages If an error is detected, then a corresponding error message appears which must be acknowledged by pressing any key. Possible error messages are as follows: E 01 The switching points and hystereses have been set in such a way that the resulting switch-back point is no longer within the permissible setting range. Corrective action: E 10 A data error has been detected in the saved settings. Possible causes are strong electromagnetic interference or a component fault.
9. Technical specifications Input data:: Measuring ranges: Overload pressures: Burst pressure: Output data: Accuracy (display, analogue output) Repeatability: Temperature drift: zero point max. range max.
10. Circuit diagram Model with 1 switching output + 1 EDS 356-1 20..32 V - 4 3 Imax. 1.2 A SP 1 Model with 2 switching outputs + 1 EDS 356-2 20..32 V - 4 3 2 Imax. 1.2 A SP 1 Imax. 1.2 A SP 2 Model with 1 switching output and 1 analogue output + 1 EDS 356-3 20..32 V - 4 3 2 Imax. 1.2 A SP 1 I = 4..
11. Model code EDS 3 5 6 - X -XXXX- 4 00 Series no. Determined by manufacturer Type of connection, mechanical 5 = 7/16 SAE4 female Type of connection, electrical 4 = 4-pole plug M12X1 Output 1 = 1 switching output 2 = 2 switching outputs 3 = 1 switching output and 1 analogue output Pressure ranges in psi 0150; 1000; 3000; 6000; 9000 vacuum version = 0089 (range -14..75; see also modification number) Modification number 400 = standard (determined by manufacturer) 401 = vacuum version -14..
12. Accessories 12.1 For electrical connection 4-pole connector with flying leads, M12x1, 90° angled Female interface All dimensions are in inches and (millimeters) 1.043 ( 26.5) 0.807 (20 .5) Ø 0.433 (11.0) 1.528 (38.8 ) 1 .24 (31.5) 3 4 2 1 M12x1 Ø 0 .571 (14.5) Wire colors: Pin 1: brown, Pin 2: white, Pin 3: blue, Pin 4: black Available types: 12.
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