TM 5-3895-374-24-1
Options
ALTIVAR 0,75 to 30 kW
Initial setting up
The initial setting up of the braking option needs no adjusting
After checking the connections, and possibly adjusting the speed controller settings (see p 38
and onwards), the ALTIVAR can be switched on
Should 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 ramp
time until the final adjustment is reached, making sure that the braking cycles are identical to
those for actual use
If 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 power
Maintenance
Where there is excessive braking, the speed controller may display the following code
0br Deceleration ramp not followed
Increase the
0bF Capacitor overvoltage owing to excessive
deceleration time
braking or a driving load
(page 3-220)
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