Operating Instruction - Frequency Inverter 230V / 400V ... - opis.cz

17.7.3 Encoder MonitoringFailures of the speed sensor lead to a faulty behavior of the drive, as the measuredspeed forms the foundation of the control mode. By default, the speed sensor monitoringsystem continuously monitors the speed sensor signal, the track signal and thedivision marks. If, while the frequency inverter is released, a faulty signal is recognizedfor longer than the timeout, a fault switch-off is effected. If the parameter OperationMode 760 is set to zero, the monitoring function is deactivated.Operation modeFunction0 - Off The function is deactivated2 - ErrorA fault message is displayed according to the timeoutsset.The speed sensor monitoring is to be parameterized in the sub functions according tothe application. The monitoring function becomes active with the release of the frequencyinverter and the start command. The timeout defines a monitoring time inwhich the condition for the fault switch-off must be fulfilled without interruption. Ifone of the timeouts is set to zero, this monitoring function is deactivated.ParameterSettingsNo. Description Min. Max. Fact. sett.761 Timeout: Signal Fault 0 ms 65000 ms 1000 ms762 Timeout: Channel fault 0 ms 65000 ms 1000 ms763 Timeout: Direction fault 0 ms 65000 ms 1000 msTimeout: Signal FaultThe actual speed measured is compared with the output value of the speed controller.If the actual speed value is exactly zero for the time selected with the parameterTimeout: Signal fault 761, although a reference value is available, the fault is displayedwith the message "F1430".Timeout: Channel faultThe actual speed measurement monitors the sequence in time of the signals in thequadruple evaluation of the speed sensor operation mode. If the speed sensor signalis faulty for the time selected with the parameter Timeout: Channel fault 762, thefault is displayed with the message "F1431".Timeout: Direction faultThe actual speed measured is compared with the reference speed. If the sign betweenreference value and actual value differs for the time selected with the parameterTimeout: Direction fault 763, the fault is displayed with the message "F1432".The monitoring function is reset when the drive mechanism has moved in the referencevalue direction by a quarter of a revolution.170 02/06