KEB Combivert F5 series Instruction Manual

Also see for COMBIVERT F5 Series: Instruction manual Instructions for use Installation manual Instruction manual Instruction manual

KEB Combivert F5 series Instruction Manual Manual pdf 8 page image

8GeneralThe operating temperature range of the unit is -10°C to + 45°C. Operation outsideof this temperature range can lead to shut down of the inverter.The unit can be stored (power off) in the temperature range -25°C to 70°C. Afterprolonged storage, one half year or more, apply voltage to the inverter for 2 hours beforeoperating the motor. This will allow the electrolytic bus capacitors to stabilize before useand result in longer lifetime of the unit.The power rating of the inverter must be derated for operation above 3,300 ft (1000 m).Reduce the rated power 1% for each additional 330 ft (100 m). The maximum elevationfor operation is 6,560 ft (2000 m)The relative humidity should be limited to 95% without condensation.1.3.5 Cooling systemsThe KEB COMBIVERT F5 is available with different cooling systems:Standard - Standard design with heat sink and thermostatically controlled two speedfan.Flat Back - With this design the heat sink is omitted. The unit must be mounted onto anappropriate base (a machined surface) to ensure heat removal from the inverter. Thedissipation of the heat must be guaranteed by the machine builder. Advantages include:low profile for intermittent duty controls, heatsink sharing, modular assembly.Water-cooling - This design is laid out for connection to an existing cooling system. Thedissipation of the heat must be guaranteed by the machine builder. To avoid moisturecondensation, the minimum inlet temperature of the coolant may not fall below the roomtemperature. The maximum inlet temperature shall not exceed 40°C. Measures must betaken to prevent contamination and calcifying buildup within the cooling system. Themaximum pressure on the cooling system shall not exceed 4 bar (60 psi (special versionswith higher pressures on request). The standard water pipe fitting is G1/2.Convection (push through version) - The heat sink is over sized and designed to pushthrough the cabinet wall to the outside. The smaller units (<40hp ) generally will operatewithout additional air flow through the heatsink. The larger units will require some typeof forced airflow through the heatsink.1.4.4 Ambient Conditions