FR-A701 INSTRUCTION MANUAL (Applied) - Automation Systems ...

Causes and corrective actionsOperation PanelIndicationNameDescriptionCheck pointCorrective actionFR-PU04THTHFR-PU07Electronic thermal relay function prealarmAppears if the cumulative value of the Pr. 9 Electronic thermal O/L relay reaches or exceeds 85% of thepreset level. If it reaches 100% of the Pr. 9 Electronic thermal O/L relay setting, a motor overload trip (E.THM) occurs.The THP signal can be simultaneously output with the [TH] display. For the terminal used for the THPsignal output, assign the function by setting "8" (positive logic) or "108" (negative logic) in any of Pr. 190to Pr. 196 (output terminal function selection). (Refer to page 214)1. Check for large load or sudden acceleration.2. Is the Pr. 9 Electronic thermal O/L relay setting is appropriate? (Refer to page 165.)1. Reduce the load weight or the number of operation times.2. Set an appropriate value in Pr. 9 Electronic thermal O/L relay. (Refer to page 165.)Operation PanelIndicationNameDescriptionCheck pointCorrective actionFR-PU04 ————MTFR-PU07 MTMaintenance signal outputIndicates that the cumulative energization time of the inverter has reached a given time.When the setting of Pr. 504 Maintenance timer alarm output set time is the initial value (Pr. 504 = "9999"),this protective function does not function.The Pr. 503 Maintenance timer setting is larger than the Pr. 504 Maintenance timer alarm output set timesetting. (Refer topage 357.)Setting "0" in Pr. 503 Maintenance timer erraces the signal.Operation PanelIndicationNameDescriptionCheck pointCorrective actionFR-PU04 ————CPFR-PU07 CPParameter copyDisplayed when parameters are copied between the FR-A701 series and FR-A700 series 75K or more.Check that parameters are not copied between the FR-A701 series and FR-A700 series 75K or more.Copy between the same FR-A701 series.Operation PanelIndicationNameDescriptionCheck pointCorrective actionFR-PU04 ————SLFR-PU07 SLSpeed limit indication (output during speed limit)Output if the speed limit level is exceeded during torque control.• Check that the torque command is not larger than required.• Check that the speed limit level is not low.• Decrease the torque command.• Increase the speed limit level.PROTECTIVE FUNCTIONS5377