Executing run/stop controller mode change, Switching between auto and manual control – Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B User Manual

Page 159

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Publication 900-UM007D-EN-E - January 2011

Parameter Adjustments & Application Considerations

4-23

Executing RUN/STOP Controller Mode Change

When the Event Input Assignment 1 or Event Input Assignment 2 parameter
is set to STOP (RUN/STOP), control is started (RUN) when event input 1 or
2 is OFF. Control is stopped when 1 or 2 is ON (refer to Table 4.K). While
control is stopped, the controller’s STP (stop) LED lights. Alarm outputs will
operate according to the selected value(s).

Note: The Multi-SP Uses parameter must be configured to 0 or 1 for

RUN/STOP control by event inputs to function (refer to Table 4.F).

Switching Between Auto and Manual Control

When the Event Input Assignment 1 or Event Input Assignment 2 parameter
is set to MANU (auto/manual), manual control will start when Event Input 1
or 2 turns ON. Auto control will start when the input turns OFF.

The MANU indicator will light during manual control.

Controlling the Start of the Simple Program Function

When the Event Input Assignment 1 or Event Input Assignment 2 parameter
is set to PRST (program start), the simple program will start when event input
1 or 2 turns ON. The program will be reset when the input turns OFF and the
RUN/STOP status will automatically switch to STOP mode. If the program
END output is ON, the program END output will turn OFF.

Table 4.K

Setting

Input Contact

Controller Mode

Event Input 1 or 2

ON

STOP

Event Input 1 or 2

OFF

RUN

Table 4.L

Setting

Input Contact

Control Mode

Event Input 1 or 2

OFF

Automatic

Event Input 1 or 2

ON

Manual

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