5.3 Description of Function Codes 5.3.2 E codes (Extension terminal functions)
External alarm “THR” assignment (Function code data = 9)
Turning this terminal command OFF immediately shuts down the inverter output (so that the motor coasts to a stop),
displays the alarm 0H2, and issues the alarm output (for any alarm) ALM. The THR command is self-held, and is
reset when an alarm reset takes place.
Use this alarm trip command from external equipment when you have to immediately shut down the
inverter output in the event of an abnormal situation in peripheral equipment.
Ready for jogging “JOG” assignment (Function code data = 10)
This terminal command is used to jog or inch the motor for positioning a workpiece.
Turning this command ON makes the inverter ready for jogging.
( Function code C20)
Select frequency setting 2/1 “Hz2/Hz1” assignment (Function code data = 11)
Turning this terminal command ON and OFF switches the frequency command source between frequency setting
1 (F01) and frequency setting 2 (C30).
( Function code F01)
Motor selection 2/3/4 “M2/M3/M4” assignment (Function code data = 12, 36, 37)
Motor 1 to motor 4 can be selected with the “M2”, “M3”, and “M4” signals, or control parameters can be changed
by switching the function code for motor 1 to motor 4.
( Function codes A42, b42, r42)
DC braking command “DCBRK” assignment (Function code data = 13)
This terminal command gives the inverter a DC braking command through the inverter’s digital input.
(Requirements for DC braking must be satisfied.)
( Function codes F20 to F22)
Select torque limit 2/1 “TL2/TL1” assignment (Function code data = 14)
This terminal command switches between torque limiter 1-1, 1-2 (F40 and F41) and torque limiter 2-1, 2-2 (E16 and
E17).
( Function codes F40, F41)
Switch to commercial power (50 Hz) “SW50”/(60 Hz) “SW60” assignment (Function code data = 15, 16)
When an external sequence switches the motor drive power from the commercial line to the inverter, the terminal
command SW50 or SW60 enables the inverter to start running the motor with the current commercial power
frequency, regardless of settings of the reference/output frequency in the inverter. A running motor driven by
commercial power is carried on into inverter operation. This command helps you smoothly switch the motor drive
power source from the commercial power to the inverter power.
For details, refer to the table below, “Operation timing scheme”, “Example of sequence circuit” and “Example of
operation time scheme” on the following pages.
Terminal command assigned
Switch to commercial power for
50 Hz “SW50”
Do not concurrently assign both SW50
and SW60. A commercial power supply
cannot be used to run synchronous
motors.
Switch to commercial power for
60 Hz “SW60”
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