Lenze DDS Function library Drive - Manual (Page 86)

2.7.4 Speed preconditioning (L_NSET)
Function library LenzeDrive.lib
Special functions
2−76
L
LenzeDrive.lib EN 1.7
2.7.4.4 Ramp generator for the main setpoint
The setpoint is then led via a ramp generator with a linear characteristic. The ramp generator converts
setpoint jumps at the input into a ramp.
100%
0
tir tif
T ir T if
t
RFG−OUT
[%]
w1
w2
T
ir
+ t
ir
100%
w2 * w1
T
if
+ t
if
100%
w2 * w1
Fig. 2−74 Acceleration and deceleration times of the ramp generator
w1 ,w2 Change of the main setpoint, depending on t
ir
or t
if
RFG−OUT Output of the ramp generator
·
T
i
−times are fixed values that are stored under
– adnTir[0] ... adnTir[14] (ramp−up times) and
– adnTif[0] ... adnTif[14] (ramp−down times) in the memory.
·
The T
i
−times can be called from the memory by bTI1_b ... bTI8_b
– These inputs are binary coded, so that 16 T
i
−times can be called.
– The T
i
−times can only be activated in pairs.
·
The decoding for the enabling of the T
i
−times (calling from the memory) is made according to
the following plan:
Acceleration time Deceleration time bTI8_b bTI4_b bTI2_b bTI1_b
dnTir dnTif 0 0 0 0
adnTir[0] adnTif[0] 0 0 0 1
adnTir[1] adnTif[1] 0 0 1 0
adnTir[2] adnTif[2] 0 0 1 1
adnTir[3] adnTif[3] 0 1 0 0
adnTir[4] adnTif[4] 0 1 0 1
adnTir[5] adnTif[5] 0 1 1 0
adnTir[6] adnTif[6] 0 1 1 1
adnTir[7] adnTif[7] 1 0 0 0
adnTir[8] adnTif[8] 1 0 0 1
adnTir[9] adnTif[9] 1 0 1 0
adnTir[10] adnTif[10] 1 0 1 1
adnTir[11] adnTif[11] 1 1 0 0
adnTir[12] adnTif[12] 1 1 0 1
adnTir[13] adnTif[13] 1 1 1 0
adnTir[14] adnTif[14] 1 1 1 1
0 = FALSE
1 = TRUE