Hydac ENS 3000 User Manual download pdf (Page 30)

16.2 HYDRAULIC POWER UNIT: TO MONITOR MINIMUM FLUID LEVEL

WITH ADVANCE WARNING AND MINIMUM TEMPERATURE

MONITORING

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

level reaches 1.18 inch and tank refilling should be started. In addition, the

temperature of the hydraulic fluid should not drop below a minimum value. If,

for example, 68 °F is reached, a stop signal will be given. Furthermore the

temperature, in the form of a 4 .. 20 mA signal, should be made available to a

PLC card.

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 point Selection Numerical value

Switching output S.S.1 assignment Niv [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 TEMP

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

Analogue output S.ouT assignment TEMP

Analogue output ouTP MAMP

Switching point settings Numerical value

Switching output S.P.1 1.2

Hysteresis switching output Hi.1 0.02

Switching output S.P.2 0,81

Hysteresis switching output Hi.2 0.02

17. Note

The information in this brochure relates to the operating conditions and

applications described.

For applications or operating conditions not described, please contact the

relevant technical department.

Subject to technical modifications.

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Hydac ENS 3000 User Manual Page 30