Function List
FUNCTION LIST
BAND
Too narrow
(oscillates)
increase
Too wide
(slow warm up and response)
decrease
BAND
The functions and options are available in four levels.
Note:
A Functions Menu is shown on the cover fold-out
LEVEL 1
Function Options
[Factory settings] shown in brackets
SELECT AUTOTUNE
TUNE
[oFF] on ParK At.Sp
Used to switch the Autotune feature on and off, to select
ParK
or Autotune at setpoint.
ParK
temporarily turns the output(s) off. To use select
ParK
and exit program mode. To disable re-enter program at
TUNE
and select
oFF
.
SP1 OPERATING PARAMETERS
BAND
0.1 to * °C/°F
[10ºC/18ºF]
SP1 proportional band/Gain or Hysteresis
* 25% sensor maximum
Proportional control eliminates the cycling of on-off
control. Heater power is reduced, by time proportioning
action, across the proportional band.
INT.T
oFF 0.1 to 60 minutes
[5.0]
SP1 integral time/reset
Auto-corrects proportional control offset error
DER.T
oFF 1 - 200 seconds
[25]
SP1 derivate time/rate
Suppresses overshoot and speeds response to disturbances
DAC
0.5 - 5.0 x bAnd
[1.5]
SP1 derivative approach control dAC
Tunes warm-up characteristics, independent of normal
operating conditions, by controlling when derivative
action starts during warm-up (smaller dAC value = nearer
setpoint).
Too short
(overshoots and oscillates)
Too long
(slow warm up and response)
Too short
(slow warm up and response,
under corrects)
Too long
(oscillates and over corrects)
*
*
disturbance
Too small
(overshoots)
Too large
(slow stepped warm up)
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