4-22 Chapter 4: Appendix E - 20mA Current Loop Option

Appendix E: 20mA Current Loop Option

You may order the ACM/Flex16 with 20mA Current Loop Serial Line Interface Modules. ). The 20mA Current Loop SLIM offers the following features:

ƒA passive 20mA Current Loop electrical interface.

ƒThe 20mA Current Loop receivers and transmitters are optically isolated.

ƒEach SLIM controls four ports.

ƒLEDs on the ACM/Flex16 indicate the electrical interface in use for a specific group of four ports.

ƒSLIMs are field upgradeable, providing you with more flexibility for your application.

Please refer to Figure 21 for a partial schematic of the 20mA Current Loop SLIM.

Figure 21: 20mA Current Loop partial schematic

20mA Current Loop SLIM: partial schematic

 

+5V

 

 

 

+5V

 

+5V

8

3

TxD +

 

8

1

RxD +

CTS

TxD 6

HPCL

 

RxD

7

HPCL

 

 

4

 

 

 

 

4100

TxD -

 

4200

2

RxD -

DCD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

5

 

 

 

5

 

 

 

 

 

Note: The 20mA Current Loop Serial Line Interface Module controls four ports, and therefore the schematic shows only a portion of the circuit.

Intellicon-NT960/PCI User's Manual, ver. 0.02