Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 158)

Publication 900-UM007D-EN-E - January 2011
4-22 Parameter Adjustments & Application Considerations
Figure 4.39 —Event Inputs
Operation Commands Other than Multi-SP
The following table shows the functions assigned when an Event Input
Assignment (1 or 2) is displayed.
Note (1) PRST (Program Start) can be set even when the Program Pattern parameter is set to OFF, but the function
will be disabled.
(2) This function can be set for heating/cooling control, but the function will be disabled.
When any of the following functions are set for an Event Input Assignment
parameter, the same function cannot be set for another Event Input
Assignment parameter: STOP (RUN/STOP), MANU (Auto/Manual Switch),
PRST (Program Start), DRS (Invert Direct/Reverse Operation), AT-2 (100%
AT Execute/Cancel), AT-1 (40% AT Execute/Cancel), WTPT (Setting
Change Enable/Disable), or LAT (Alarm Latch Cancel). Turn event inputs
ON and OFF while the power is being supplied. Event input ON/OFF
changes are detected for inputs of 50 ms or longer. (However, inputs of 250
ms or longer is determined using logic operations.)
The functions are described in detail below. Event inputs 1 and 2 are taken as
examples.
Table 4.J — When Event Input Assignment (1 or 2) is Displayed
Setting Function
none
None
stop R
RUN/STOP
manu
Auto/Manual
prst
Program Start (See note 1.)
drs
Invert Direct/Reverse Operation
at-2
100% AT Execute/Cancel
at-1
40% AT Execute/Cancel (See note 2.)
wtpt
Setting Change Enable/Disable
lat
Alarm Latch Cancel
EV2
EV2
EV1
EV1
−
+
+ EV2
EV1
EV2
EV1
−
+
+
900-TC16 900-TC8
Note: Do not apply an external voltage source to the Event Input Terminals.