Despatch MIC1462 Controller Manual - Manual (Page 61)

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STEP DESCRIPTION MESSAGE
DISPLAY FUNCTION AVAILABLE SETTING
14 Setpoint Rate SPRate Determines maximum
rate of change for
setpoint in units per
hour 1 to 9999, INF
Default = INF (infinite)
15 Output 1 Cycle Time
7
CycTime1 Limits frequency of
operation of output
relay to maximize relay
life. 0.5, 1, 2, 4, 8, 16, 32,
64, 128, 256 or 512
seconds. Default = 1
second
16 Output 2 Cycle Time
7, 2
CycTime2 Limits frequency of
operation of output
relay to maximize relay
life. 0.5, 1, 2, 4, 8, 16, 32,
64, 128, 256 or 512
seconds. Default = 1
second
Notes on Tune Parameters Mode
1. The Input Correction value should be chosen with care. Any adjustment to this
parameter is, in effect, a calibration adjustment. Injudicious application of values to
this parameter could lead to the displayed process variable value bearing no
meaningful relationship to the actual process variable value. There is no front panel
indication when this parameter is in effect (i.e. has been set to a non-zero value).
2. These parameters are applicable only if the secondary control (COOL) output is
fitted.
3. These parameters are not applicable if Proportional Band 1 is set to 0 (i.e. ON/OFF
control).
4. This parameter is not applicable if Proportional Band 1 is set to 0 or if Output 2
(COOL) is not fitted.
5. The message Display will show Diff 1 for ON/OFF control on Output 1 only, Diff 2 for
ON/OFF control on Output 2 only or Diff for ON/OFF control on both Output 1 and
Output 2.
6. These parameters are not applicable if the Recorder Output option is not fitted.
7. Output 1 cycle Time is not applicable if Proportional Band 1 is set to 0 or if Output 1
is a DC linear output. Output 2 cycle Time is not applicable if Proportional Band 1 is
set to 0, if Output 2 is not fitted or if Output 2 is a DC linear output.
8. These parameters only apply if the proportional band has been set to 0.