TM 5-3895-374-24-1OptionsALTIVAR 0,75 to 30 kWInitial setting upThe initial setting up of the braking option needs no adjustingAfter checking the connections, and possibly adjusting the speed controller settings (see p 38 and onwards), the ALTIVAR can be switched onShould there be any doubt as to the braking power, proceed in the following manner- set a deceleration ramp time longer than the required braking time,- start up the machine and carry out successive braking operations, gradually reducing the ramptime until the final adjustment is reached, making sure that the braking cycles are identical tothose for actual useIf the resistance heats up to an abnormal level, the thermocontact will open and the controller will lock, displaying the code 0hF .If this occurs, check the braking conditions and change the resistance, if necessary, for a resistance with the same ohmic value and higher rated powerMaintenanceWhere there is excessive braking, the speed controller may display the following code0brDeceleration ramp not followedIncrease the0bFCapacitor overvoltage owing to excessivedeceleration timebraking or a driving load(page 3-220)}
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