Chapter5.Function parameter
49
When automatic switch selected, when the deviation absolute value of “given value”
and “feedback value” is smaller than E2.20, PID parameter select parameter group 1.
when the deviation absolute value of “given value” and “feedback value” is bigger than
E2.21, PID parameter select parameter group 2. And when the deviation absolute value is
between E2.20 and E2.21, PID parameter will be the interpolation value of the two
parameter groups, please refer to diagram.
Whether to stop integration
when output reach limit
Integral separation:
If set integral separation valid, when multi-function digital terminals DI integral pause
(function 38) is valid, PID integration stop operation, then only PID proportional and
differential action are effective.
If set integral separation invalid, whether DI is effective or not, integral separation are
invalid.
Whether to stop integration when output reach limit: After the PID outputs reaches the
maximum or minimum value, can choose whether to stop the integral action. If choose to
stop integration, PID integration stops, which may help reduce the PID over-regulation
value.
0.0% ～ 100.0% （ maximum
frequency）
PID initial value
hold time
When inverter starts, PID output is fixed as the initial value E2.23, after continued
E2.24 hold time, PID starts to regulation operations of close loop.
Maximum deviation
value (forward)
Maximum deviation
value (reverse)
This function is used to limit the deviation between the two PID output shot (2ms /
beat), in order to suppress excessive PID output, to make the inverter running stable.
E2.25 corresponds to the maximum value of absolute output deviation of forward running,
E2.26 corresponds to the maximum value of absolute output deviation of reverse running.
5-1-14.E3 Virtual terminal group
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