Reference Value/Actual Value - BONFIGLIOLI Active cube Operation 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 param-
eter
Reference frequency RAM [Hz]
and receive the actual value via parameter
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
actual value in parameter
1]
. Conversion into a frequency value (reference value) or from a frequency value (ac-
tual value) is performed in the frequency inverter.
The entry for parameter
The reference value for the frequency inverter from parameter
RAM [Hz]
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
line
set point
Reference percentage
ages, e.g. as a reference value for technology controllers or as a reference torque.
No.
434 Ramp Setpoint
484 Reference frequency RAM [Hz]
524 Reference percentage RAM [%]
Operation mode 434
Internal reference fre-
1 -
quency
2 - Reference line value
3 - Internal reference fre-
quency + reference line
value
This function is only relevant in the case of configurations without positioning control
(parameter
74
Actual speed
Reference frequency RAM [Hz]
484 or
Override Target Velocity vl [rpm]
ramp set point
operation mode 434
0
1
524 can be used for regular changing of reference percent-
Parameters
Description
The internal reference frequency is determined from
the reference frequency channel.
The reference value is supplied externally via the bus
Addition (considering the sign) of internal reference
frequency and reference line value
30 ≠ x40).
Configuration
ACU
Modbus/TCP
484 or
Override Target Velocity vl [rpm]
240.
Actual speed
Override Target Velocity vl [rpm]
240 are interpreted as values with unit [min
484 is done in [Hz] directly.
1459 is connected to the refer-
refer to note
fmin
fmax
+
Min.
1
-999.99
-300.00
Function
1459
1459 and the
Reference frequency
frequency
ramp
Settings
Max. Factory set-
ting
3 3
999.99 0.00
300.00 0.00
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