Fuji Electric FRENIC-HVAC User Manual page 397

Terminal function assignment and data setting
Select multistep frequency (0 to 15 steps) -- SS1, SS2, SS4, and SS8

(Function code data = 0, 1, 2, and 3)
The combination of the ON/OFF states of digital input signals SS1, SS2, SS4 and SS8 selects
one of 16 different frequency commands defined beforehand by 15 function codes C05 to
C19 (Multistep frequency 0 to 15). With this, the inverter can drive the motor at 16 different
preset frequencies.
 Refer to C05 through C19.
Select ACC/DEC time -- RT1 and RT2 (Function code data = 4 and 5)

These terminal commands switch between ACC/DEC time 1 to 4 (F07, F08 and E10 through
E15).
 Refer to F07 and F08.
Enable 3-wire operation -- HLD (Function code data = 6)

Turning this terminal command ON self-holds the forward FWD or reverse REV run
command, to enable 3-wire inverter operation.
 Refer to F02.
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 alarm).
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 OH2, 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.
6.3 Details of Function Codes
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