Danfoss VLT 2800 Series, Operating Instructions Manual

Page: 31 / 103

207 Ramp-up time 1
(ramp-up time 1)
Value:
0.02 - 3600.00 sec
3.00 sec (VLT 2803-2875)
10.00 sec (VLT 2880-2882)
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
will not reach the current limit (set in parameter 221
Current limit I
LIM
).
Description of choice:
Set the required ramp-up time.
208 Ramp-down time 1
(ramp down time 1)
Value:
0.02 - 3600.00 sec
3.00 sec (VLT 2803-2875)
10.00 sec (VLT 2880-2882)
Function:
The ramp-down time is the deceleration time from the
rated motor frequency f
M,N
(parameter 104 Motor fre-
quency, f
M,N
) to 0 Hz, provided no overvoltage arises
in the inverter because of generating operation of the
motor.
Description of choice:
Set the required ramp-down time.
209 Ramp-up time 2
(ramp up time 2)
Value:
0.02 - 3600.00 sec.
3.00 sec (VLT 2803-2875)
10.00 sec (VLT 2880-2882)
Function:
See description of parameter 207 Ramp-up time 1 .
Description of choice:
Set the required ramp-up time. Shift from ramp 1 to
ramp 2 by activating
Ramp 2 via a digital input.
210 Ramp-down time 2
(RAMP DOWN TIME 2)
Value:
0.02 - 3600.00 sec.
3.00 sec (VLT 2803-2875)
10.00 sec (VLT 2880-2882)
Function:
See description of parameter 208 Ramp-down time 1 .
Description of choice:
Set the required ramp-down time. Shift from ramp 1 to
ramp 2 by activating
Ramp 2 via a digital input.
211 Jog ramp time
(jog ramp time)
Value:
0.02 - 3600.00 sec.
3.00 sec (VLT 2803-2875)
10.00 sec (VLT 2880-2882)
Function:
The jog ramp time is the acceleration/deceleration
time from 0 Hz to the rated motor frequency f
M,N
(pa-
rameter 104
Motor frequency, f
M,N
). It is assumed that
the output current will not reach the current limit (set in
parameter 221
Current limit I
LIM
).
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
30 MG.27.A2.02 - VLT
®
is a registered Danfoss trademark