5-69
Terminal function assignment and data setting
Coast to a stop -- BX (Function code data = 7)
Turning this terminal command ON immediately shuts down the inverter output so that the motor coasts to a stop
without issuing any alarms.
Reset alarm -- RST (Function code data = 8)
Turning this terminal command ON clears the ALM state--alarm output (for any fault). Turning it OFF erases the alarm
display and clears the alarm hold state.
When you turn the
RST command ON, keep it ON for 10 ms or more. This command should be kept OFF for the
normal inverter operation.
Enable external alarm trip -- THR (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 outputs the alarm relay (for any fault) 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 inverte
output in the event of an abnormal situation in peripheral equipment.
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 helps you smoothly switch 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.
SW60 Starts at 60 Hz.
Do not concurrently assign both
SW50 and SW60.
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
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