Fuji Electric frenic mini series, Руководство пользователя

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9.2 Details of Function Codes
9-35
Chap. 9
FUNCTI
ON C
O
DE
S
Frequency equivalence--(FAR)
(Function code data = 1)
This signal is turned ON when the difference between the output and set frequencies is
within the allowable error zone (prefixed to 2.5 Hz).
Frequency detection--(FDT)
(Function code data = 2)
This signal is turned ON when the output frequency of inverter has come to the frequency
detection level specified by function code E31. It is turned OFF when the output frequency
drops lower than the detection level for 1 Hz (hysteresis band of the frequency comparator:
prefixed at 1 Hz).
Undervoltage detection--(LU)
(Function code data = 3)
This signal is turned ON when the voltage of the DC link circuit of the inverter drops below
the specified level or when the motor stops due to activation of the undervoltage protection
feature (undervoltage trip). It is turned OFF if the DC link circuit voltage exceeds the
specified voltage.
Torque limiting (Current limiting)--(IOL)
(Function code data = 5)
This signal is turned ON when the inverter is limiting the motor drive current by activating
the current limiter of either software (F43: Function select, F44: Operation level) or
hardware (H12 = 1: Current limit). The minimum ON-duration is 100 ms.
Using this signal allows the inverter to show an overload alarm on the display panel of the
external equipment.
Auto-restart after recovery of power--(IPF)
(Function code data = 6)
This signal is turned ON during the period from when the inverter detects the undervoltage
of the DC link circuit and shuts down the output (if auto-restart after recovery of power is
selected (F14 = 4 or 5)) until auto-restarting (the output frequency has recovered up to the
set frequency). At that moment of auto-restarting, this signal is turned OFF.
Motor overload early warning--(OL)
(Function code data = 7)
This signal is used to issue a motor overload early warning for enabling you to take
corrective action before the inverter detects a motor overload (
0L1
alarm) and shuts down
its output.
The motor properties are specified by function codes F10 (Electronic thermal selection) and
F12 (thermal time constant). If a value calculated from the settings of F10 and F12 exceeds
the detection level of the early warning set by function code E34, this signal is turned ON.
Normally, the recommended set current level for E34 is 80 to 90% of the allowable
continuous load current set by function code F11.
Function code E34 is effective for not only the motor overload early warning
(OL), but also the current detection (ID) and low level current detection (IDL).
Retry in operation--(TRY)
(Function code data = 26)
This signal is turned ON when the retry facility specified by function codes H04 (number of
retries) and H05 (retry interval) is being activated.
Refer to function codes H04 and H05 for details of the output timing and number of
retries.