FUNCTION CODES
Chap 5
■ Pattern operation stage No. 1 – “STG1” (Function code data = 18), Pattern operation stage No. 2 –
“STG2” (Function code data = 19), Pattern operation stage No. 4 – “STG4” (Function code data = 20)
Outputs the stage (operation process) currently performed during pattern operation.
Operation pattern stage No.
Output terminal signal
STG1 STG2 STG4
Stage 1 ON OFF OFF
Stage 2 OFF ON OFF
Stage 3 ON ON OFF
Stage 4 OFF OFF ON
Stage 5 ON OFF ON
Stage 6 OFF ON ON
Stage 7 ON ON ON
■ Frequency (speed) arrival 2 – “FAR2” (Function code data = 21)
The signals come ON when the difference between the output frequency before torque limiting and reference
frequency is within the frequency arrival hysteresis width specified by E30 and the frequency arrival delay specified
by E29 has elapsed. ( Function codes E29 and E30)
■ Cooling fan in operation – “FAN” (Function code data = 25)
With the cooling fan ON/OFF control enabled (H06 = 1), this output signal is ON when the cooling fan is in
operation, and OFF when it is stopped. This signal can be used to make the cooling system of peripheral
equipment interlocked for an ON/OFF control. ( Function code H06)
■ Auto-resetting – “TRY” (Function code data = 26)
This output signal comes ON when auto resetting (resetting alarms automatically) is in progress.
( Function codes H04 and H05)
■ Universal DO -- “U-DO” (Function code data = 27)
Assigning this output signal to an inverter's output terminal and connecting the terminal to a digital input terminal of
peripheral equipment, allows an upper controller to send commands to the peripheral equipment via the RS-485 or
the fieldbus communications link. The universal DO can be used as an output signal independent of the inverter
operation.
For the procedure for access to Universal DO via the RS-485 or fieldbus communications link, refer to the
respective instruction manual.
■ Heat sink overheat early warning – “OH” (Function code data = 28)
This output signal is used to issue a heat sink overheat early warning that enables you to take a corrective action
before an overheat trip
0h1
actually happens.
ON at [(Overheat trip (
0h1
) temperature) – 5°C (41°F)] or higher
OFF at [(Overheat trip (
0h1
) temperature) - 8°C (46°F)] or lower
This signal comes ON also when the internal air circulation DC fan (FRN0203 E2-4 or above for 400 V class
series) is locked.
■ Synchronization completed -- “SY” (Function code data = 29)
This output signal comes ON when the control target comes inside the synchronization completion detection angle
in synchronous running.
For details about master-follower operation, refer to function codes J73 to J88.
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