KEB COMBIVERT F5-A, Applications Manual, Page: 156 / 552

Page 7.4 - 16 COMBIVERT F5-A, -E, -H © KEB, 2012-10
Setpoint, rotation- and ramp setting
7.4.8 Ramp generator
The ramp generator assigns an adjustable time to a speed change, during this time the change stall take
lace. The acceleration time (for pos. speed changes) and deceleration time (for neg. speed changes) can be
preset separately for each direction of rotation.
7.4.8.1 Acc dec mode
The different ramp functions can be adjusted separately for every frequency change (acceleration forward,
deceleration forward,...etc.). The selection is made with oP.27 and is adjustable separately in each set.
Mode „constant ascent “ concerns to the standard ramp generator with defined acceleration, deceleration and
jerk values (see chapter 7.4.7.2).
Mode „constant time “is needed only in exceptional cases, if acceleration / deceleration shall be executed al-
ways indepent of the setpoint in the same time (see chapter 7.4.7.3).
Mode „ogive run “is a special form of the mode „constant ascent “, which is particulary suitable for lift and tra-
versing drives (see chapter 7.4.7.4).
The more exact explanation of each operation mode is done in the respective sub-chapters.
oP.27: Acc dec mode
Bit Ramp Value Explanation
0, 1
forward accele-
ration
0: BR constant ramp Standard operation mode
1: BR constant time / actual setpoint Constant time
2: BR constant time / last setpoint Do not adjust!
3: BR ogive run Ogive run
2, 3
forward decele-
ration
0: VR constant ramp Standard operation mode
4: VR constant time / actual setpoint Do not adjust!
8: VR constant time / last setpoint Constant time
12: VR ogive run Ogive run
4, 5
reverse accele-
ration
0: BL constant ramp Standard operation mode
16: BL constant time / actual setpoint Constant time
32: BL constant time / last setpoint Do not adjust!
48: BL ogive run Ogive run
6, 7
reverse decele-
ration
0: VL constant ramp Standard operation mode
64: VL constant time / actual setpoint Do not adjust!
128: VL constant time / last setpoint Constant time
192: VL ogive run Ogive run
8 all
0: Reference value constant as indicated in Bit 0…7
256: reference value variable
(FOR: oP.10, REV: oP.11)
only constant ascent
ogive run: variable
(oP.10 or oP.11)