Instruction manual

Table Of Contents
4-74
Enable DC braking -- DCBRK (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.)
Refer to F20 through F22.
Select torque limiter level 2/1 -- TL2/TL1 (Function code data = 14)
This terminal command switches between torque limiter 1 (F40 and F41) and torque limiter 2 (E16 and E17).
Refer to F40 and F41.
Switch to commercial power for 50 Hz or 60 Hz -- SW50 and SW60 (Function code data = 15 and 16)
When an external sequence switches the motor drive power from the commercial line to the inverter, inputting the
terminal command SW50 or SW60 at the specified timing 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 smoothly switches
the motor drive power source, when the motor is being driven by commercial power, from the commercial power to
the inverter power.
For details, refer to the following table, the operation schemes, and an example of external circuit and its operation
time scheme on the following pages.
Assignment
The inverter:
Description
SW50
Starts at 50 Hz.
Do not concurrently assign both SW50 and SW60.
SW60
Starts at 60 Hz.
Operation Schemes
When the motor speed remains almost the same during coast-to-stop: