Бренды
Electronic switching elements WE-.SP
Electronic switching elements WE-.SP
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Operating temperature -30 … +85 °C
- Modular structure
- Electronic switching elements WE with one or two switching points
- Possibility to suppress the signal during cold start
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Type / version |
WE-1SP-M12x1 | WE-1SP-EN175301-803 | WE-2SPU-M12x1 | WE-2SP-M12x1 | ||
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Electrical connection |
Round plug-in connection M12x1, 4-pole | Rectangular plug-in connection EN 175301-803 | Round plug-in connection M12x1, 4-pole | |||
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Kontaktbelastung, Gleichspannung |
max. |
A |
1 | |||
|
Spannungsbereich 1) |
max. |
V DC |
10 … 30 | |||
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Voltage |
V AC |
150 | 250 | |||
|
V DC |
150 | 200 | ||||
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Max. Schaltleistung bei ohmscher Last |
W |
20 | 70 | 20 | ||
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Schaltart |
75% Signal |
Normally open contact | ||||
|
100% Signal |
Changeover | Normally closed contact | ||||
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2SPSU |
Signal interconnection at 30 °C, Return switching at 20 °C |
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Anzeige über LED`s |
im elektrischen Schaltelement 2SP... |
Stand-by (LED green); 75% switching point (LED yellow); 100% switching point (LED red) |
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Type of protection according to EN 60529 |
IP 67 | IP65 | IP 67 | |||
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Ambient temperature range |
°C |
-25 … +85 | ||||
|
Type / version |
WE-1SP-M12x1 | WE-1SP-EN175301-803 | WE-2SPU-M12x1 | WE-2SP-M12x1 | |||
|
Type of pressure measurement |
Pressure differential | ||||||
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Operating temperature range |
°C |
-30 … +85 | |||||
|
Ambient temperature range |
°C |
-25 … +85 | |||||
|
Tightening torque |
max. |
MA max |
Nm |
50 | |||
|
Masse |
elektronisches Schaltelement: |
kg |
0.1 | 0.1 | |||
By default, the Rexroth filters are supplied with a mechanical/visual maintenance indicator (WO). The electronic switching element (WE) is available as accessory and compatible with all mechanical/visual maintenance indicators. The electronic switching element is attached to the visual maintenance indicator and fixed by means of a locking ring. The electronic maintenance indicator is not dependent on the nominal pressure of the filter.
The increasing back pressure and/or pressure differential pushes a piston (1) against a spring (2) upwards. The solenoid (3) mounted on the piston is moved together with the piston. The visual pin (4) may take two valid positions. If the position of the piston (1) with solenoid (3) is below the nominal pressure of the maintenance indicator, the visual pin remains in retracted “rest position”. Upon first exceedance of the nominal pressure, the position of the visual pin (5) is changed rapidly into the second possible “On condition” by repellence of the solenoid of the pin (5) to the solenoid of the piston (3). The pin will permanently remain in this extended position, even visible after machine switch-off (or pressure drop, cold start) (memory function). It has to be acknowledged.
The reed contact (6) integrated in the switching element is operated by the change in the magnetic field. With two switching points, two reed contacts are installed.
For the electronic switching element WE-2SPSU, the temperature for the temperature suppression is discharged via the housing of the mechanical/visual maintenance indicator.
The electronic switching element WE-2SPSU is not suitable for the mechanical/visual maintenance indicator made of polyamide (WO-S01-2.2-…-PA).