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Parameters
(N) Operation via communication and its settings
FR-F800
5 - 509
% setting reference frequency (Pr. 390)
Set a reference frequency of the set frequency. The setting value of Pr. 390 "% setting reference fre-
quency" is 100% reference. The ratio of the frequency command is converted to the set frequency in
the following formula:
Set frequency = % setting reference frequency × Speed scale (Refer to page 5-512)
Automatic baud rate recognition (Pr. 726 "Auto Baudrate/Max Master")
Automatic changing of baud rate is available with Pr. 726 setting. When Pr. 726="128 to 255", turn the
power ON from OFF or reset the inverter to start automatic baud rate recognition.
Fig. 5-247:
Relationship between Pr. 390 and the set frequency
I002308E
NOTES
The % setting reference frequency cannot be set at less than the minimum frequency resolution of
the inverter.
The set frequency is written to RAM.
The set frequency is applied at the writing of Speed scale. (The set frequency is not applied at the
setting of Pr. 390.)
Pr. 726 setting
Operation
0 to 127
Automatic baud rate recognition is invalid.
(Using Pr. 332 setting for baud rate)
128 to 255
Inverter monitors the data on the communication bus, and automatically switches the baud
rate.
The recognized baud rate is written to Pr. 332.
Tab. 5-263:
Pr. 726 settings
NOTES
After the baud rate recognition, the recognized baud rate is written in EEPROM as the Pr. 332 set-
ting regardless of the Pr. 342 "Communication EEPROM write selection" setting.
The BACnet status monitor displays "1" during automatic baud rate recognition.
The communication error monitor count is not performed during automatic baud rate recogni-
tion.
During automatic baud rate recognition, the inverter does not transmit data, but only accepts
data.
The baud rate switching operation cannot be finished if the inverter is not connected to the com-
munication bus. (BACnet protocol will not be established.)
The baud rate switching operation cannot be finished if the inverter is continuously receiving
abnormal data during automatic baud rate switching. (BACnet protocol will not be established.)
0%
Set frequency (Speed scale)
100.00%
Set frequency written to the inverter
Pr. 390 % setting reference frequency
0.00Hz
Содержание FR-F820-00046
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Страница 114: ...System configuration for Ethernet communication FR F800 E Installation and wiring 2 86 ...
Страница 172: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Страница 812: ...Inverter to inverter link function FR F800 E Parameters 5 640 ...
Страница 874: ...Measurement of main circuit voltages currents and powers Precautions for maintenance and inspection 7 20 ...
Страница 900: ...Outline dimension drawings Specifications 8 26 ...
Страница 928: ...EC Declarations of Conformity Appendix A 28 A 6 EC Declarations of Conformity A 6 1 FR F820 FR F840 FR F842 series ...
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