5-50
Frequency arrival signal -- FAR (Function code data = 1)
This output signal comes ON when the difference between the output frequency and
reference frequency comes within the frequency arrival hysteresis width specified by E30.
(Refer to the description of E30.)
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.
Torque polarity detected -- B/D (Function code data = 4)
The inverter detects the polarity of the internally calculated torque and issues the driving or
braking polarity signal to this digital output. This signal comes OFF when the calculated torque
is the driving one, and it goes ON when it is the braking one.
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).
• Torque limiting (F40, F41, E16 and E17)
• Current limiting by software (F43 and F44)
• Instantaneous overcurrent limiting by hardware (H12 = 1)
• Automatic deceleration (Anti-regenerative control) (H69 = 2 or 4)
• Overload stop (Hit and stop) (J65 = 3)
When the IOL signal is ON, it may mean that the output frequency may have
deviated from the frequency specified by the frequency command because of this
limiting function.
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
N
and shuts down its
output. (Refer to the description of E34.)
Inverter ready to run -- RDY (Function code data = 10)㩷
This output signal comes ON when the inverter becomes ready to run by completing
hardware preparation (such as initial charging of DC link bus capacitors and initialization of
the control circuit) and no protective functions are activated.
Frequency arrival signal 2 -- FAR2 (Function code data = 21)㩷
This output signal comes ON when a difference between the output frequency before the
torque limiting and the reference frequency comes to within the frequency arrival hysteresis
width (E30) and then the frequency arrival delay time (E29) has elapsed. (Refer to the
descriptions of E29 and E30.)
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