Hydac ENS 3000 User Manual download pdf (Page 29)

16. Application examples

16.1 HYDRAULIC POWER UNIT: TO MONITOR MINIMUM FLUID LEVEL

WITH ADVANCE WARNING AND ALARM

In this example application, an advance warning should be given when the fluid

level reaches 1.18 inch and tank refilling should be started. An alarm should be

triggered if the fluid level drops below 0.39 inch and reset once the fluid level

has reached 0.59 inch again.

To achieve this as described in the example, the following settings must be

made in the ENS 3000 menu and the two switching points must be set as

follows:

Menu item Selection Numerical value

Switching output S.S.1 assignment Niv [= fluid level]

Switching mode S.m. 1 SP

Switching direction S.d. 1 off

Switch-on delay T

1 0

Switch-off delay T

off

1 0

Switching output S.S.2 assignment niv

Switching mode S.m. 2 SP

Switching direction S.d. 2 on

Switch-on delay T

2 0

Switch-off delay T

off

2 0

Switching point settings Numerical value

Switching output S.P.1 1.2

Hysteresis switching output Hi.1 0.02

Switching output S.P.2 0.59

Hysteresis switching output Hi.2 0.2

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Hydac ENS 3000 User Manual Page 29