535 User's Manual Chapter 5 49
Controller Set Up
Access Set Up Return to Operation Next menu Next parameter Next value Access Tuning Return to Operation
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4. OUT. STEP
Defines the output step size in absolute percent during a TYPE 2 or TYPE 3
pretune.
R –50% to 50.0%
D 10.0%
5. LOW LIMIT
Defines the lower most limit the process variable can reach during pretune
before aborting.
R Any value in the process variable range
D Dependent on the process variable range
6. HI LIMIT
Defines the upper most limit the process variable can reach during pretune
before aborting.
R Any value in the process variable range
D Dependent on the process variable range
7. TIMEOUT
This defines the execution time limit for pretune before aborting.
R 8 to 1500 minutes
D 1500 minutes
8. MODE
Defines the control mode after pretune is completed or aborted.
• MANUAL
D AUTOMATIC
9. NOISE BND.
Defines the noise band to be used by the adaptive tuning algorithm.
R 0.1% to 10% of the process variable range
D 0.2%
10. RESP. TIME
Defines response time to be used by the adaptive tuning algorithm.
R 10 to 32000 seconds
D 7200 seconds
11. DEAD TIME
Defines the amount of time required for process to begin to respond to an output
change (used by POWERBACK algorithm).
R 0.1 seconds to 7200.0 seconds
D 0.1 seconds
TIMEOUT
1500
MODE
AUTOMATIC
NOISE BND.
0.2
RESP. TIME
60
OUT.STEP
10.0
LOW LIMIT
(D)
HI LIMIT
(D)
DEAD TIME
0.1
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