ABB UUA333BE01 HIEE410110P2 Differential expansion module

Using a fan to blow air past the heatsink will increase the allowable current significantly. It is always required that the 6410’s chassis temperature not exceed 60°C. It is best to confirm this by direct measurement with a temperature probe during system operation. Any difference between the ambient temperature during the measurement and the worst case should be added to the measured chassis temperature. The resulting sum must be under 60°C.

If the 6410 is mounted to a panel with no cooling plate and no heat sink

a minimum unobstructed space of four inches above and below and one inch between the side plate and any other object must be provided. If cooling is accomplished solely through convection air flow (no fan), the unit can be run at 2.5 Amps RMS maximum if the ambient temperature is 25°C or less and 1.25 Amps RMS maximum if the ambient temperature is 45°C or less. Again, use of a fan to blow air past the side plate of the 6410 will increase the allowable current. The same considerations given above for the optional heatsink apply.

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