Advantech PCI-1727U, Руководство пользователя

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PCI-1727U User Manual 24
0 to 20 mA Current Output Connections
The PCI-1727U provides 12 channels of 0 to 20 mA current output. The
current loop utilizes 0 to 5 V (unipolar) voltage output as the driving
source. The PCI-1727U's current drive circuit consists of a power FET,
and a constant current source. The voltage bias of this current output
should be within 8 to 36 V to insure correct operation. An external 24 V
power supply is ideal for this application. The PCI-1727U also provides
an internal 12 V power source for current loops should this be required.
There are three ways of connecting the load:
1. Grounded load with a floating supply
2. Floating load with a grounded power supply