A.6 Drive Derating DataThe drive can be operated at above rated temperature, altitude and default carrier frequencyby derating the drive capacity. For example, a 10 amp continuous rated drive may be operatedat higher temperatures if it is only used to supply 8 amps continuous.u Temperature DeratingAs the ambient temperature for the drive is increased above the drive specification the driveshould be derated. Additionally parameter L8-35 Installation Method Selection on page 195should be set according to enclosure type and mounting method as illustrated in Figure A.1on page 195.n Output Current Derating Due to Ambient TemperatureIf the ambient temperature is above the drive specification or if drives are side-by-sidemounted in a cabinet, the parameters L8-12 and L8-35 must be set according to the installationconditions. The output current is derated as shown in Figure A.1.No. Name Description Range Def.L8-12 AmbientTemperatureSettingAdjust the drive overload (oL2) protection level when thedrive is installed in an environment that exceeds its ambienttemperature rating.40 to 60 40 °CL8-35 InstallationMethodSelection0: Disabled (standard installation)1: Side-by-Side installation2: IP20/NEMA Type 13: Finless/Fin Outside installation0 to 2 040 50030 3550%70%80%85%100%DriveRatingAmbient temp CParameter L8-12oParameter L8-35 = 0 (IP20)Parameter L8-35 = 2(IP20/NEMA Type 1)Parameter L8-35 = 1(Side-by-side installation)Parameter L8-35 = 3(Finless/ Fin outside installation)Figure A.1 Ambient Temperature and Installation Method DeratingA.6 Drive Derating DataYASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual 195A Specifications
