Plc Function - Mitsubishi Electric FR-E800 Series Instruction Manual

15.11

PLC function

The inverter can be run in accordance with a sequence program.
In accordance with the machine specifications, a user can set various operation patterns: inverter movements at signal inputs,
signal outputs at particular inverter statuses, and monitor outputs, etc.
Pr. Name
414 PLC function operation
A800 selection
415 Inverter operation lock
A801 mode setting
498 PLC function flash
A804 memory clear
User parameter auto
675
storage function
A805
selection
1150 to
1199 User parameters 1 to
A810 to User parameters 50
A859
 Outline of PLC function
• To enable the PLC function, set a value other than "0" in Pr.414 PLC function operation selection. (The Pr.414 setting
change becomes valid after inverter reset.)
• Switch the execution key (RUN/STOP) of the sequence program by turning the SQ signal ON/OFF. The sequence program
can be executed by turning the SQ signal ON. To input the SQ signal, set "50" in any of Pr.178 to Pr.189 (Input terminal
function selection) to assign the function to a terminal.
• When "1" is set in Pr.415 Inverter operation lock mode setting, the inverter can be operated only when the sequence
program is running. By changing the PLC program status from RUN to STOP during inverter operation, the motor
decelerates to stop. To stop the inverter operation at the STOP status of the PLC program while performing auto operation
using SD1148 (or SM1200 to 1211) of the PLC program, set Pr.415 = "1".
• For reading or writing sequence programs, use FR Configurator2 on the personal computer connected to the inverter via
RS-485 communication or USB. (When Pr.414 ≠ "0", sequence programs can be read from or written to FR Configurator2.)
 Sequence start (SQ) signal
• Switch the execution key (RUN/STOP) of the sequence program by turning the SQ signal ON/OFF. The sequence program
can be executed by turning the SQ signal ON. To input the SQ signal, set "50" in any parameter from Pr.178 to Pr.189
(Input terminal function selection) to assign the function. When the SQ signal is assigned to any parameter from Pr.185
to Pr.189 (Terminal NET X function selection), the sequence program can be executed just by inputing the SQ signal
via terminal NET X. (The SQ signal needs not be input via an external terminal.)
• When Pr.414 = "1 or 11", the SQ signal must be input according to the command source (except when the SQ signal is
assigned to terminal NET X).
416
15. (A) Application Parameters
15.11 PLC function
Initial Setting
value range
0 PLC function disabled
1, 11
0
PLC function enabled
2, 12
The inverter start command is enabled regardless of the operating status of
0
the sequence program.
0
The inverter start command is enabled only while the sequence program is
1
running.
0: Clears the flash memory fault display (no operation after
writing while the flash memory is in normal operation).
9696: Clears the flash memory (no operation after writing
while the flash memory is at a fault).
Other than 0 and 9696: Outside the setting range
0, 9696 (0 to
0
9999)
0: Normal display
1: The flash memory is not cleared because the PLC
function is enabled.
9696: During flash memory clearing operation or flash
memory fault
1 Auto storage function enabled
9999
9999 Auto storage function disabled
Desired values can be set.
Because devices D206 to D255 used by the PLC function can be mutually
0 0 to 65535 accessed, the values set to Pr.1150 to Pr.1199 can be used by the
sequence program. The result of performing calculation by a sequence
program can also be monitored by Pr.1150 to Pr.1199.
Description
The conditions to enable the SQ signal
depends on the Pr.338 setting.
The SQ signal is enabled by input from an
external input terminal.
Write
Read