5.3 Description of Function Codes 5.3.2 E codes (Extension terminal functions)
Frequency (speed) arrival 2 “FAR2” assignment (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, E30)
Cooling fan in operation “FAN” assignment (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” assignment (Function code data = 26)
This output signal comes ON when auto resetting (resetting alarms automatically) is in progress.
( Function codes H04, H05)
Universal DO “U-DO” assignment (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” assignment (Function code data = 28)
This is used to take appropriate measures when signs of this are detected before an overheating trip (0H1) occurs.
ON at [(Overheat trip (0H1) temperature) – 5 °C (41 °F)] or higher
OFF at [(Overheat trip (0H1) temperature) - 8 °C (46 °F)] or lower
Synchronization completed “SY” assignment (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.
Lifetime alarm “LIFE” assignment (Function code data = 30)
This output signal comes ON when it is judged that the service life of any one of capacitors (DC link bus capacitors
or electrolytic capacitors on the printed circuit boards), cooling fan, or IGBT has expired. This signal should be used
as a guide for replacement of the capacitors and cooling fan. If this signal comes ON, use the specified maintenance
procedure to check the service life of these parts and determine whether the parts should be replaced or not (
Function code H42)
Reference loss detected “REF OFF” assignment (Function code data = 33)
This output signal comes ON when an analog input used as a frequency command source is in a reference loss
state (as specified by E65) due to a wire break or a weak connection. This signal goes OFF when the normal
operation under the analog input is resumed.
( Function code E65)
Overload prevention controlling “OLP” assignment (Function code data = 36)
This output signal comes ON when overload prevention control is activated.
(The minimum ON-duration is 100 ms.)
( Function code H70)
To Next Page
Loading...
