Publication 900-UM007D-EN-E - January 2011
4-68
Parameter Adjustments & Application Considerations
Starting Method
Any of the following three methods can be used to start the simple program.
• Setting the Program Start parameter to STRT.
• For 900-TC8 & 900-TC16: Turning ON an event input. (The program
start must be assigned to an event input. Refer to the Note on page
4-68.)
• Starting with an Operation Command using communications. (When
the program start is not assigned to an event input.)
Note:
When an event input is used to start and reset the simple program,
writing is performed to EEPROM. Be sure to consider the write life (1
million writes) of the EEPROM in the system design. When the
program start is assigned to an event input, the Program Start
parameter will function as a monitor display, and the RSET/STRT
displays can be used to check when the event input has started or reset
the simple program. When this is done, the Program Start parameter
functions as a monitor display only and cannot be changed using key
operations. If the Program Pattern parameter is configured to OFF, the
event input assignment setting will be initialized to NONE.
Soak Time and Wait Band
Figure 4.149
The wait band is the fixed band within which the process value is stable in
respect to the set point. The soak time is measured within the wait band. The
timer that measures the soak time operates only when the process value is
RSET
→
STRT
PV
(5)
(1)
(2) (3)
(4)
Set point
Wait band
Wait band
Soak time
remain
Set point
Set point
Summary of Contents for Allen-Bradley 900-TC16
Page 1: ...USER MANUAL Bulletin 900 TC8 900 TC16 900 TC32 Series B Temperature Controllers...
Page 2: ...2...
Page 72: ...Publication 900 UM007D EN E January 2011 3 2 Configuration Basic Operation Figure 3 3 900 TC32...
Page 136: ...Publication 900 UM007D EN E January 2011 3 66 Configuration Basic Operation Notes...
Page 340: ...Publication 900 UM007D EN E January 2011 5 112 Parameter Functions Definitions Notes...
Page 350: ...Publication 900 UM007D EN E January 2011 6 10 Troubleshooting Error Indication Notes...
Page 406: ...Publication 900 UM007D EN E January 2011 D 8 Glossary Notes...