8.8 Details of Protective Functions
8-29
Chap. 8
SPECIFIC
A
T
ION
S
8.8 Details of Protective Functions
The table below lists the name of the protective functions, description, display of LED monitor,
whether alarms output or not at terminals
[30A, B, C]
, and related function codes. If the LED
monitor displays an alarm code, remove the cause of activation of the alarm function by referring to
FRENIC-Mini Instruction Manual, Chapter 6, "TROUBLESHOOTING."
Name
Description
LED
monitor
displays
Alarm
output
[30A,B,C]
Related
function
code
During
acceleration
0C1
During
deceleration
0C2
Overcurrent
protection
(short-circuit
protection)
(ground fault
protection)
• Stops the inverter output to protect
the inverter from an overcurrent
resulting from overload.
• Stops the inverter output to protect
inverter from an overcurrent due to
a short-circuit in the output circuit.
• Stops the inverter output to protect
inverter from an overcurrent due to
a ground fault in the output circuit.
During
running at
constant
speed
0C3
Yes
---
During
acceleration
0U1
During
deceleration
0U2
Overvoltage
protection
The inverter stops the inverter output
by detecting an overvoltage (400 VDC
for 200V series, 800 VDC for 400V
series) in the DC link circuit.
This protection is not assured if excess
AC line voltage is applied
inadvertently.
During
running at
constant
speed
(Stopped)
0U3
Yes
---
Undervoltage
protection
Stops the motor when the DC link circuit voltage
drops below the undervoltage level (200 VDC for
200 V series, 400 VDC for 400 V series).
However, if data "4 or 5" is selected for F14, no
alarm is output even if the DC link circuit voltage
drops.
LU
Yes
(This alarm
may not be
outputted
depending
upon the
data setting
of the
function
code.)
F14
Input phase loss
protection
Detects input phase loss, stopping the inverter
output. This function prevents the inverter from
undergoing heavy stress that may be caused by
input phase loss or interphase voltage unbalance
exceeding 6% and may damage the inverter.
If connected load is light or a DC reactor is
connected to the inverter, this function will not
detect input phase loss if any.
L
Yes
H98
Output phase
loss protection
Detects breaks in inverter output wiring at the start
of running and during running, stopping the inverter
output.
0PL
Yes
H98
• Stops the motor by detecting excess heat sink
temperature in case of cooling fan failure or
overload.
0H1
Yes
H43
Overheat
protection
• When the built-in or external braking resistor
overheats, the inverter stops running.
* It is necessary to set the function code data
corresponding to the resistor used (built-in or
external).
dbH
Yes
F50,
F51
Содержание frenic mini series
Страница 1: ...USER S MANUAL Fuji Electric Co Ltd MEH446...
Страница 2: ...Compact Inverter User s Manual...
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Страница 62: ...4 4 4 3 Drive Command Generator Figure 4 2 Drive Command Generator...
Страница 66: ...4 8 Figure 4 3 d Terminal Command Decoder ORing with Link Commands Ignoring Link Commands...
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Страница 124: ...Part 5 Specifications Chapter 8 SPECIFICATIONS Chapter 9 FUNCTION CODES...
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