will show the “I “ for a second and its I setting value next, use the same “P” setting procedure to
set the I value. When finished, press the SET again to confirm the change. The display will show
the “d” for a second and its value next. Use the same “P” setting procedure to set the d value.
When finished, press the SET again to confirm the change. The next setting is “AT”, the
auto-tune. Use “+” to set the value to 1 and press SET will activate the auto-tune. The next
setting is the “T” setting, use “-” and “+” to set the cycle time value. This value should be 2 for
most application. After change the PID parameter, the controller needs to be turned off and on
again for the best result.
Figure 6. Parameter setup flow chart (Code 166).
5.2 The second group is about the system configuration and set up. Once they are set, they
normally do not need to be changed. This group of parameters can be accessed by access code
155. If you don’t want your system to be altered by others, do not let other people know this code.
Table 3 shows the list of the parameters, their range and initial set value.
Table 3. List of control parameters and the initial settings under code 155.
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