Danfoss VLT 8000 AQUA series, Руководство по эксплуатации, Страница: 111 / 206

VLT
®
8000 AQUA
Programming
206 Ramp-up time
(RAMP UP TIME)
Value:
1 - 3600 sec.
✭
Depends on the unit
Function:
The ramp-up time is the acceleration time from 0
Hz to the rated motor frequency f
M,N
(parameter
104 Motor frequency, f
M,N
). It is assumed that the
output current does not reach the current limit (set
in parameter 215 Current limit I
LIM
).
Description of choice:
Program the desired ramp-up time.
207 Ramp-down time
(RAMP DOWN TIME)
Value:
1 - 3600 sec.
✭
Depends on the unit
Function:
The ramp-down time is the deceleration time
from the rated motor frequency f
M,N
(parameter
104 Motor frequency, f
M,N
) to 0 Hz, provided
there is no overvoltage in the inverter because of
the motor acting as a generator.
Description of choice:
Program the desired ramp-down time.
208 Automatic ramp-down
(AUTO RAMPING)
Value:
Disable (DISABLE)
[0]
✭
Enable (ENABLE)
[1]
Function:
This function ensures that the frequency converter
does not trip during deceleration if the ramp-down
time set is too short. If, during deceleration, the
frequency converter registers that the intermediate
circuit voltage is higher than the max. value (see list
of warnings and alarms ), the frequency converter
automatically extends the ramp-down time.
NB!:
If the function is chosen as Enable [1], the ramp
time may be considerably extended in relation to
the time set in parameter 207 Ramp-down time .
Description of choice:
Program this function as Enable [1] if the frequency
converter periodically trips during ramp-down. If a
quick ramp-down time has been programmed that
may lead to a trip under special conditions, the function
can be set to Enable [1] to avoid trips.
209 Jog frequency
(JOG FREQUENCY)
Value:
Par. 201 Output frequency Low limit - par. 202
Output frequency high limit ✭
10.0 HZ
Function:
The jog frequency f
JOG
is the fixed output frequency
at which the frequency converter is running when
the jog function is activated.
Jog can be activated via the digital inputs.
Description of choice:
Set the desired frequency.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.83.A2.02 - VLT is a registered Danfoss trademark
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