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Closed-loop User Switches C1
111
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The S-curve Abort function must be
ENABLED (S-CURVE ABORT = enabled).
FAST FLUX
(Fast Flux Enable)
This parameter addresses the method the HPV
600 uses to build up flux in the motor. Enabling
the Fast Flux function can decrease the motor
fluxing time significantly. By decreasing the
motor’s flux time, the starting takeoff time will
also be decreased.
Certain motors will have a noticeably long
fluxing time, which is indicated by the time
between the run command being issued and the
speed regulator release output going true.
Enabling the Fast Flux function will reduce this
delay.
Fast Flux Function with FAST FLUX = disabled
In this example, the motor fluxing time was 109
msec.
Fast Flux Function with FAST FLUX = enabled
With the same motor example, the motor fluxing
time was reduced to 46 msec.
MAINS DIP ENA
(Mains Dip Enable)
When enabled, the function will reduce the
speed (by the percentage defined by the MAINS
DIP SPEED parameter) when the drive goes
into ‘low voltage’ mode. ‘Low voltage’ mode is
defined as when the drive declares a UV alarm,
which is defined by the Input line-to-line voltage
(INPUT L-L VOLTS) parameter and the
Undervoltage Alarm Level (UV ALARM LEVEL)
DB PROTECTION
(Dynamic Braking Resistor Protection Selection)
The dynamic braking IGBT is limited as to when
it can be turned “on” (i.e. send power to the
dynamic braking resistors).
The dynamic braking IGBT is allowed to be “on”
while the drive is running (i.e. while the speed
regulator is released) and for a period of ten (10)
seconds after the drive is stopped. If the
dynamic braking IGBT is still “on” ten seconds
after the drive stops running, the drive will turn
“off” the dynamic braking IGBT (thus stop
sending power to the dynamic braking resistors)
and declare a “DB VOLTAGE” fault or alarm
(whether fault or alarm, depends on setting of
this parameter).
ENCODER FAULT
(Encoder Fault Enable)
This parameter allows the user to temporarily
disable the Encoder Fault. Adding this feature
allows the user to temporarily disable the
Encoder Fault during the initial start-up process,
when the motor model (defined by the A5 Motor
Parameters) is not clearly defined.
When the Encoder Fault is disabled (ENCODER
FAULT (C1) = disabled), the drive will display
the warning message “EncoderFault OFF”,
every time the RUN command is removed.
IMPORTANT: After the motor parameters in A5
have been established, the Encoder Fault
should be enabled (ENCODER FAULT (C1) =
enabled).
Note: the default for the ENCODER FAULT (C1)
parameter is enabled.