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Unlock Codes
The >+"? screen is seen before entry is allowed to Configuration, Setup and Automatic
Tuning modes.
An unlock code must be correctly selected using the
mode. An incorrect entry results in a return to Select Mode. The value of the lock codes only
can be changed from within the modes that they apply to.
Description
Default values are:
Automatic Tune Mode = @
mode = 2@
Set-up
Configuration Mode = 3@ .
*Note:
On Indicators (single line display), this legend is shown for approx 1 second before the
Main display value.
Automatic Tune Mode
Automatic Tune Mode is selected when it is desired to use the Pre-tune and Self-tune
facilities of the controller to assist the user in setting up Proportional band, Integral and
Derivative parameter values. Refer to the following Automatic Tune Mode table.
Pre-tune can be used to set the Controllers PID parameters approximately. Self-tune may
then be used to optimise the tuning. Pre-tune can be set to run automatically after every
power-up using the Auto Pre-Tune 51# parameter in Setup Mode.
The AT indicator will flash
whilst Self-tune is operating. If both Pre-tune and Self-tune are engaged the AT indicator will
flash until Pre-tune is finished, and is then continuously on.
Navigating in Automatic Tune Mode
Press
to select the next parameter in the table and
required.
Hold down
Note:
If there is no key activity for 2 minutes the controller automatically returns to operator
mode
Page 32
1
1
/
-DIN,
/
-DIN &
4
8
Table 7.
Lock Code – Entry and Default Values
Upper/Main
Display
@'
while pre-tune is operating, and is continuously on
and press
to return to Select Mode.
Operating and Information Modes
1
/
- DIN Controllers & Indicators - Product Manual
16
or
keys to enter the required
Lower Display
st
(or 1
Legend)*
>+"?'
1
/
DIN Indicator
8
Units Display
$'
or
to set the value
59305, Issue 5 – March 2005
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