Reference signal
With this parameter, you can program a reference signal with regard to the actual value of the PI controller. By doing this, you can monitor the actual value for violation of a limit value.
P450 | 0 – 100% | Step width: | 0.1% | |
P451 | Signal = "1" if: | PI actual value < PI reference PI actual value > PI reference | ||
You have to program a digital output terminal to "PI controller actual value reference" to issue the reference signal. The reference signal operates with a hysteresis of 5%. The reference signal does not have a delay time and signals "1" depending on P451.
You must program the digital output DO01 P620, DO02 P621 or DO03 P622 to PI controller actual value reference.
