ENS 3000 Page35
Status 21.08.2015 HYDAC ELECTRONIC GMBH Part No. 669850
18.2 HYDRAULIC POWER UNIT: MINIMUM FLUID LEVEL MONITORING WITH
ADVANCE WARNING AND MINIMUM TEMPERATURE MONITORING
In this example application, an advance warning should be given when the fluid level
reaches 30 cm and tank refilling should be started. The temperature also must not fall
below a certain limit. If, for example, a temperature of
20°C is reached, a "stop" signal will appear. Furthermore, the temperature will be
transferred to an SPS card as a 4 .. 20 mA signal.
For realization of this function as described in the example,
the following settings in the menu and on the switching points of ENS 3000 must be
effected:
Menu item Selection Numerical value
Switching output S.S.1 assignment niv
Switching mode S.m. 1 SP
Switching direction S.d. 1 off
Switch-on delay Ton 1 1
Switch-off delay Toff 1 1
Switching output S.S.2 assignment TEMP
Switching mode S.m. 2 SP
Switching direction S.d. 2 on
Switch-on delay Ton 2 1
Switch-off delay Toff 2 1
Analogue output S.ouT assignment TEMP
Analogue output ouTP MAMP
Switching point settings Numerical value
Switching output S.P.1 30.5
Hysteresis switching output Hi.1 0.5
Switching output S.P.2 20.5
Hysteresis switching output Hi.2
0.5
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