Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 154)

Publication 900-UM007D-EN-E - January 2011
4-18 Parameter Adjustments & Application Considerations
• When using event inputs to switch the multi-SP, the event input
assignment display will not appear. Whether the set value and event
input assignments 1 and 2 will be displayed or hidden is shown in the
tables below.
• Do not connect the contacts from the same switch to more than one
900-TC Controller.
Two set points are set externally by using the Number of Multi-SP Uses
parameter
• Switching is possible between two set points (0 and 1) by setting the
Number of Multi-SP Uses parameter to 1. The default setting is 1 and
does not need to be changed to switch between two set points. Set
points 0 and 1 are specified by the status of event input 1.
Figure 4.32 — Event Inputs
When you want to configure event inputs to change the controllers four
pre-set Set points, you must properly configure the Number of Multi-SP Uses
parameter. Two set points (0 or 1) can be selected when the Number of
Multi-SP Uses parameter is set to 1 (default). This setting need not be changed.
Set point 0 or 1 is specified by the ON/OFF state of Event
Input 1.
Table 4.F
Number of
Multi-SP Uses Event Input Assignment 1
Event Input Assignment 2
0 Displayed (Multi-SP not used)
1 Hidden (Multi-SP, 2 Points). Displayed (Event Input 2 not
used as Multi-SP Switch).
2 Hidden (Multi-SP, 4 Points).
A
EV2
EV2
EV1
EV1
−
+
+
900-TC16 Event Inputs
EV2
EV1
−
+
+
EV2
EV1
A
900-TC8 Event Inputs
DO NOT apply on external voltage source to the Event Input Terminals.