Vacon 50X, User Manual

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vacon 50x parameters vacon 70
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7
Configures the frequency under which direct current will be applied to the drive when DC
Inject Config is set to “DC on Freq.” If this parameter is set to 0.0, the parameter operates
in the same way as “DC at Stop.”
Determines whether an external or internal dynamic brake is utilized or disabled. The
drive provides an internal dynamic brake (DB) to assist in stopping. If desired, an external
resistor can be connected to DB and B+ for additional capacity. (Note: Size 0 models can-
not have an external brake added.)
The following data values may be assigned to this parameter:
Parameter Value Description
DB Internal Internal dynamic braking active
DB External External dynamic braking active
No Dyn Brk Dynamic braking circuit disabled
Int-ARCTIC When DB Config is configured to “Int-ARCTIC,” dynamic brak-
ing becomes active if the drive temperature drops below –7
degrees C. When the DB becomes active, an “ARCTIC Mode”
warning flashes on the keypad. If the drive drops below –10
degrees C, the drive will be disabled and not allowed to run.
The keypad will indicate a “Not enabled” state at this point. If
the drive heats up after being below –10 degrees C, the drive
must meet the following criteria before operating again:
a) Drive temperature must be above –9 degrees C, and
b) Drive temperature must stay above –9 degrees C until a
time period has elapsed. The time period is dependent on how
far below –10 degrees C the drive was. Each degree below –10
degrees C adds another 4 minutes before restart.
This parameter is used to define the amount of rounding or S-curve to the Accel and De-
cel ramp. The amount of rounding is split evenly between the beginning and the end of
the ramp. A value of 1% would mean that the rounding of the ramp is near linear. A value
of 50% would have 25% rounding at the start of the ramp and 25% at the end of the ramp.
409 DC Inj Freq Default: 0 Hz
Range: 0.0 to 20.0 Hz
Level 2
410 DB Config Default: DB Internal
Range: 0–2
Level 2
CAUTION
MOTOR OVERHEATING
Do not use DC injection braking as a holding brake or excessive motor
heating may result.
Failure to observe this instruction can result in equipment damage.
414 S Ramp Rounding Default: 25%
Range: 1–100%
Level 2