![FE FRENIC-Mini Instruction Manual Download Page 131](http://html.mh-extra.com/html/fe/frenic-mini/frenic-mini_instruction-manual_547580131.webp)
5-54
Frequency detected --
FDT
(Function code data = 2)
This output signal comes ON when the output frequency exceeds the frequency detection
level specified by E31, and it goes OFF when the output frequency drops below the
"Frequency detection level (E31) - Hysteresis width (E32)."
Undervoltage detected --
LU
(Function code data = 3)
This output signal comes ON when the DC link bus voltage of the inverter drops below the
specified undervoltage level, and it goes OFF when the voltage exceeds the level.
This signal is ON also when the undervoltage protective function is activated so that the motor
is in an abnormal stop state (e.g., tripped).
When this signal is ON, a run command is disabled if given.
Inverter output limiting --
IOL
(Function code data = 5)
This output signal comes ON when the inverter is limiting the output frequency by activating
any of the following actions (minimum width of the output signal: 100 ms).
• Current limiting by software (F43 and F44)
• Instantaneous overcurrent limiting by hardware (H12 = 1)
• Automatic deceleration (Anti-regenerative control) (H69 = 2 or 4)
When the
IOL
signal is ON, the output frequency may have deviated from the
specified frequency because of the limiting function above.
Auto-restarting after momentary power failure --
IPF
(Function code data = 6)
This output signal is ON either during continuous running after a momentary power failure or
during the period from when the inverter has detected an undervoltage condition and shut
down the output until restart has been completed (the output has reached the reference
frequency).
To enable this
IPF
signal, set F14 (Restart mode after momentary power failure) to "4" (Enable
restart (Restart at the frequency at which the power failure occurred)) or "5" (Enable restart
(Restart at the starting frequency)) beforehand.
Motor overload early warning --
OL
(Function code data = 7)
This output signal is used to issue a motor overload early warning that enables you to take an
corrective action before the inverter detects a motor overload alarm
0l1
and shuts down its
output. (Refer to the description of E34.)
Service lifetime alarm --
LIFE
(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 and electrolytic capacitors on the printed circuit board) and cooling fan
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.
For details about the judgment on service life, refer to Table 7.3 "Criteria for Issuing a
Lifetime Alarm" in Chapter 7, Section 7.3 "List of Periodical Replacement Parts."