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Chapter 7 Exclusive Functions for iS7 Inverter Control/Monitoring
7-9
7.2.2 Control (PLC Option
Æ
Inverter)
(1) iS7 Inverter Frequency Reference
PLC option can change the inverter’s frequency reference. Here, the DRV07 (Freq Ref Src) must be se to
“PLC.”
▶
Common area of the iS7 inverter
Referring to the parameters (exclusively for control) of inverter common area in the “App. 4-6, page 4,
Appendix,” the addresses of the common area of the inverter frequency reference are as follows.
Common Area Address
Name
Remark
0x380
Inverter Command Freq.
Common Area (Write) address for iS7
▶
Special D registers of PLC for inverter control corresponding to APO60 ~ 67
Register
Use of the Register
Remark
D4454
Data to be inputted in the common area parameter
address set up by APO60 (PLC Wr Data1)
PLC
Option
Æ
Inverter(control)
D4455
Data to be inputted in the common area parameter
address set up by APO61 (PLC Wr Data2)
PLC
Option
Æ
Inverter(control)
D4456
Data to be inputted in the common area parameter
address set up by APO62 (PLC Wr Data3)
PLC
Option
Æ
Inverter(control)
D4457
Data to be inputted in the common area parameter
address set up by APO63 (PLC Wr Data4)
PLC
Option
Æ
Inverter(control)
D4458
Data to be inputted in the common area parameter
address set up by APO64 (PLC Wr Data5)
PLC
Option
Æ
Inverter(control)
D4459
Data to be inputted in the common area parameter
address set up by APO65 (PLC Wr Data6)
PLC
Option
Æ
Inverter(control)
D4460
Data to be inputted in the common area parameter
address set up by APO66 (PLC Wr Data7)
PLC
Option
Æ
Inverter(control)
D4461
Data to be inputted in the common area parameter
address set up by APO67 (PLC Wr Data8)
PLC
Option
Æ
Inverter(control)
▶
Application and exemplary program
1) Set up the inverter parameters as shown below. In the APO60(PLC Wr Data1), enter the “0380Hex”
which is the address (page 4, “App. 4-6, Appendix) of the common area of the inverter frequency
reference.
Code
Function Name
Setting Value
DRV07
Freq Ref Src
PLC
APO60
PLC Wr Data1
0380 Hex
2) APO60 (PLC Wr Data1) corresponds with D4454 which is the special register of the PLC option by 1:1
relation. Since the APO60 (PLC Wr Data1) is registered with the common area address (0380Hex) of the
inverter frequency reference, a specific value inputted in the D4454 in ladder program, the value will be
the frequency reference of the inverter.
In the sample ladder program below, if the contact point of the M0000 is ON, the inverter will be set up
with the frequency reference of 37.00Hz.