Pzd2, Reference Value / Actual Value - BONFIGLIOLI Vectron Agile Series Communications Manual

Handling of the Objects
16.4.5

PZD2, Reference Value / Actual Value

In the PZD2, the master gives its reference value to the frequency inverter in the output data set and gets
information back on its actual value in the input data set.
The use of the reference/actual value channel depends on the configuration setting (control system). The
actual value is generated from one of the sources according to the control system.
390 Profibus Reference

The reference value and actual value are related to the Parameter
Profibus Reference
The distinction is made via the setting of parameter
Rated frequency
0,
is used as the reference variable. Both parameters are capable of data set change-over.
Parameter
No.
375 Rated Frequency
390 Profibus Reference
Reference and actual values are transmitted in a standardized form. The standardization is carried out
by the variables being related to the reference value (
390).
Reference Value
+ 100%
- 100%
The possible range = ±200 % = +32768 to -32768 = 0x7FFF to 0x8000
Example: The setting of parameter
required reference frequency is 30.00 Hz. This means 50% of the reference value, thus
the set point 8192 (0x2000) has to be transmitted.
With the reference value
weakening area above its reference frequency.
Example: The parameter
parameter
The reference value for the frequency inverter from PZD2 is provided by the Fieldbus Reference
Value.
In the Reference Frequency Channel, setting "20 – Fieldbus Reference Value" can be selected via
Reference Frequency Value Source 1
Parameter
Internal reference
frequency
228
Reference bus frequency
282
Reference ramp
frequency
283
06/2010
390.
375 is the reference variable. If
Description
Standardization
Binary Decimal
14
+ 2 16384
14
- 2 49152
Profibus Reference
Profibus Reference
Rated frequency
Profibus Reference
390 to 100.00 Hz the value range of ± 200 Hz is possible.
475 or
Actual Values
Reference Frequency Value Source 1
Sum of
Reference Frequency Value Source 2
and
Fieldbus reference value from Profibus.
Actual Ramp Reference Frequency.
Profibus DP V1 Agile
Rated frequency
Profibus Reference
Profibus Reference
Setting
Min. Max.
10,00 Hz 1000,00 Hz
0,00 Hz 999,99 Hz
Rated frequency
Hexadecimal
0x4000
0xC000
390 is the reference value 60.00 Hz. The
390 a machine can also be operated in the field
375 is set to a frequency of 50.00 Hz. With the setting of
Reference Frequency Value Source
Content
375 OR the Parameter
Profibus Reference
390. If
Profibus Reference
390 ≠ 0,
Factory Setting
50,00 Hz
0,00 Hz
Profibus reference
375 OR
492.
Format
475 xxx,xx Hz
492.
xxx,xx Hz
xxx,xx Hz
390 =
390
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