Advantech PCI-1720 Manuel d'utilisateur télécharger pdf (Page 30)

26 PCI-1720 User's Manual

3. Floating load with an internal +12 V power supply.

These are shown in the following illustrations.

Figure 5-4: Grounded-load connection with a floating power supply

Figure 5-5: Floating-load connection with a grounded power

supply

Figure 5-6: Floating-load connection with an internal +12 V

DC

power supply

+ -

I

SINK

AGND

Internal Side

External Side

0 ~ 20 mA

or

4 ~ 20 mA

Grounded

Load

+-

Internal Side External Side

I

SINK

AGND

0 ~ 20 mA

or

4 ~ 20 mA

Floating

Load

Internal Side External Side

+12 V

DC

I

SINK

AGND

0 ~ 20 mA

or

4 ~ 20 mA

Floating

Load

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