Siemens COMBIMASTER Reference Manual page 23

Parameter
P002 • • • •
Ramp up time
(seconds)
P003 • • • •
Ramp down time
(seconds)
P004 • • • •
Smoothing (seconds)
22
Function Range
[Default]
0.50-
650.00
[10.00]
-- -- -- -- --
(SW
Version :
3.00
onwards)
0.10 -
650.00
[10.00]
0.00–
650.00
[25.00]
0 - 40.0
[0.0]
COMBIMASTER & MICROMASTER Integrated
Description / Notes
This is the time taken for the motor to accelerate from
standstill to the maximum frequency as set in P013.
Setting the ramp down time too short can cause the inverter
to trip (fault code F001 – overvoltage, or F002 -
overcurrent).
F re q u e n c y
f
m a x
0 H z
R a m p u p
tim e
(0 - 6 5 0 s )
This is the time taken for the motor to decelerate from
maximum frequency (P013) to standstill.
Setting the ramp down time too short can cause the inverter
to trip (fault code F001 – overvoltage, or F002 -
overcurrent).
This is also the period for which DC injection braking is
applied (see P073).
F re q u e n c y
f
m a x
0 H z
R a m p d o w n
(0 - 6 5 0 s )
Used to smooth the acceleration/deceleration of the motor
(useful in applications where it is important to avoid 'jerking',
e.g. conveyor systems, textiles, etc.).
Smoothing is only effective if the ramp up/down time
exceeds 0.3 s.
Frequency
P002 = 10 s
f
max
(P013)
0 Hz
P004
= 5 s
Total acceleration time
The smoothing curve for deceleration is based on the ramp
up gradient (P002) and is added to the ramp down time set
by P003. Therefore, the ramp down time is affected by
changes to P002.
Siemens plc. 1999
©
REFERENCE MANUAL
T im e
T im e
tim e
P004
Time
= 5 s
= 15 s
| G85139-H1731-U300-D2