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3-8

3.2 TERMINAL BLOCK AND CONNECTOR LAYOUT

The ANAFAZE 12LS terminal blocks and connectors are assigned according to the following two pages. Subsequent

sections provide detailed connection descriptions.

12LS REAR PANEL

NOTES:

1. THE CH (LOOP NUMBER) +IN IS THE ANALOG POSITIVE OF THE INPUT SIGNAL FOR THAT LOOP.

2. -IN COM IS THE ANALOG COMMON NEGATIVE OF THE INPUT SIGNAL.

3. CTRL COM IS THE COMMON FOR THE DIGITAL I/O CIRCUITS, SERIAL COMMUNICATIONS, AND IS

CONNECTED TO THE NEGATIVE OF THE POWER SUPPLY.

4. THE COMMUNICATIONS SELECTION OF RS-232 OR RS-485 WILL DETERMINE THE FUNCTION OF

TERMINALS #23 AND #24. SEE SECTION 3.5.1 RS-232 CONNECTIONS AND SECTION 3.5.3.3 RS-485

CONNECTIONS.

5. TERMINAL #24 WILL SUPPLY +5VDC FOR THE SOURCE TO OPERATE THE GLOBAL ALARM AND

DIGITAL OUTPUTS WHEN USED WITH RS-232 COMMUNICATIONS.

6. DIGITAL OUTPUTS #8 AND #9 ARE DUPLICATED ON TERMINAL #19 AND #20 RESPECTIVELY AS

WELL AS THE RTB TERMINALS OF #14 AND #12.

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