A.6 Drive Derating Data A.6 Drive Derating Data The drive can be operated at above rated temperature, altitude and default carrier frequency by derating the drive capacity. u Temperature Derating As the ambient temperature for the drive is increased above the drive specification the drive should be derated. Additionally parameter L8-35 Installation Method Selection on page 168 should be set according to enclosure type and mounting method as illustrated in Figure A.1 on page 168 . If the ambient temperature is above the drive specification or if drives are side-by-side mounted in a cabinet, the parameters L8-12 and L8-35 must be set according to the installation conditions.
The output current is derated as shown in Figure A.1 . n Output Current Derating Due to Ambient Temperature Parameter L8-35 = 0 (IP20/Open-Chassis Drive) 100% Parameter L8-35 = 2 (NEMA Type 1 Drive) Drive Rating 70% 80% 85% 50% Parameter L8-35 = 3 (Finless Drive or External Heatsink Installation) Parameter L8-35 = 1 (Side-by-side Mounting) Ambient tem p C 40 50 0 30 o o o o 35 Parameter L8-12 Figure A.1 Ambient Temperature and Installation Method Derating 168 SIEP C710606 33A OYMC AC Drive – J1000 User Manual No. Name Description Range Def.
L8-12 Ambient Temperature Setting Adjust the drive overload (oL2) protection level when the drive is installed in an environment that exceeds its ambient temperature rating. -10 to 50 30 °C L8-35 Installation Method Selection 0: IP20/Open-Chassis Drive 1: Side-by-Side Mounting 2: NEMA Type 1 Drive 3: Finless Drive or External Heatsink Installation 0 to 3 0