BONFIGLIOLI Active Cube User Manual

11.3.3 Reference value/actual value
Depending on the settings of Local/Remote as well as Modes of Operations, the con-
troller (PLC) can define the reference frequency for the frequency inverter via para
m-
eter Reference frequency RAM [Hz] 484 or Override Target Velocity vl [rpm]
1459
and receive the actual value via parameter
Actual speed
240.
The use of the reference/actual value channel depends on the set configuration (con-
trol method). The actual value is generated according to the control method use.
The reference value in parameter Override Target Velocity vl [rpm] 1459 and the
actual value in parameter Actual speed 240 are interpreted as values with unit [min
-
1]
. Conversion into a frequency value (reference value) or from a frequency value (a
c-
tual value) is performed in the frequency inverter.
The entry for parameter
Reference frequency RAM [Hz]
484 is done in [Hz] directly.
The reference value for the frequency inverter from parameter Reference frequency
RAM [Hz]
484 or Override Target Velocity vl [rpm] 1459 is connected to the refe
r-
ence line value. This reference value will be combined with the internal reference val-
ue from the reference frequency channel and directed to the ramp. For information on
the reference frequency channel, refer to the operating instructions of the frequency
inverter.
internal
set point
refer to note
frequency
ramp
fmax
fmin
0
1
+
line
set point
operation mode 434
ramp set point
Reference percentage 524 can be used for regular changing of reference percent-
ages, e.g. as a reference value for technology controllers or as a reference torque.
Parameters
Settings
No.
Description
Min.
Max.
Factory set-
ting
434
Ramp Setpoint
1
3
3
484
Reference frequency RAM [Hz]
-999.99
999.99
0.00
524
Reference percentage RAM [%]
-300.00
300.00
0.00
Operation mode 434
Function
1
-
Internal reference fre-
quency
The internal reference frequency is determined from
the reference frequency channel.
2 -
Reference line value
The reference value is supplied externally via the bus
3 -
Internal reference fre-
quency + reference line
value
Addition (considering the sign) of internal reference
frequency and reference line value
This function is only relevant in the case of configurations without positioning control
(parameter Configuration 30 ≠ x40).
74
ACU Modbus/TCP 10/13

BONFIGLIOLI Active Cube Specifications

General

Brand	BONFIGLIOLI
Model	Active Cube
Category	Inverter
Language	English