HYDAC EDS 300 - Manual (Page 2)

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 (1.2 A load capacity, no analogue output)
• EDS 300 with 2 switching outputs (1.2 A load capacity, no analogue output)
• EDS 300 with 1 switching output (1.2 A load capacity) and 1 analogue output (4...20 mA)
2. Mounting
The EDS 300 can be mounted directly onto a hydraulic block via the pressure connection
(7/16 SAE 4 female).
When used in critical applications (e.g. strong vibrations or knocks) the pressure connection
must be mechanically decoupled via a Minimess hose. Mounting clamps are available as an
accessory (see point 12.2 "Accessories - for mechanical connection").
The electrical connection should be carried out by a qualified electrician according to the
relevant regulations of the country concerned (VDE 0100 in Germany). The pressure switch
housing must be earthed properly at the same time. When fitted into a hydraulic block it is
sufficient if the block is earthed via the hydraulic system. In the case of Minimess hose-
mounting, the housing must be earthed separately.
Additional assembly notes which, from experience, reduce the effect of electromagnetic
interference:
• Make line connections as short as possible.
• Use screened lines (e.g. LIYCY 4 x 0.5 mm2)
• The cable screening must be fitted by qualified personnel subject to the ambient
conditions and with the aim of suppressing interference.
• Direct proximity to connecting lines of user units or electrical or electronic units causing
interference must be avoided as far as possible.
3. Operating keys on the membrane keypad
4-digit
keys for setting switching
digital display
additional functions
HYDAC EDS 300
SP1 SP2
mode
points, switch-back points and
PSI
4. Digital display