Lenze EVS 9300 series - Page 292

Function library
Function blocks
9.2.46 Speed setpoint conditioning (NSET)
9-166
L
EDSVS9332S-D11 EN 3.0
9.2.46.3 Setpoint inversion
The output signal of the JOG function is led via an inverter.
The sign of the setpoint is inverted, if the input NSET-N-INV is triggered with HIGH signal.
Ramp function generator for the main setpoint
The setpoint is then led via a ramp function generator with linear characteristic. Setpoint
step-changes at the input are thus led into a ramp.
100%
0
t
ir
t
if
t
ir
t
if
t
RFG--OUT
[%]
W1
w2
T
ir
= t
ir
100%
w2 − w1
T
if
= t
if
100%
w2 − w1
Fig. 9-117 Acceleration and deceleration times of the ramp function generator
z
The ramps can be set separately for acceleration and deceleration.
– Different acceleration and deceleration times can be activated via the inputs NSET-TI*x 16
(for table and function see JOG setpoints; the decoding must be done according to the
signal graphic).
–TheT
i
times can only be activated in pairs.
z When the controller is inhibited (CINH) the ramp function generator accepts the value that was
applied to the input NSET-CINH-VAL and transmits it to the next function. This function has
priority over all other functions.
z NSET-RFG-STOP = HIGH
– The ramp function generator is stopped. Changes at the input of the ramp function
generator have no effect on the output.
z NSET-RFG-0 = HIGH
– The ramp function generator decelerates to zero along the deceleration ramp.
z It is also possible to load the ramp function generator online with a defined value. For this, the
input NSET-LOAD must be set to HIGH. As long as this input is set, the value at input
NSET-SET is accepted by the ramp function generator and provided the output.