Fuji Electric FRENIC-MEGA, Instruction Manual

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„ Running forward --
FRUN
(Function code data = 52)
Running reverse --
RRUN
(Function code data = 53)
Output signal Assigned data Running forward Running reverse Inverter stopped
FRUN
52 ON OFF OFF
RRUN
53 OFF ON OFF
„ In remote operation --
RMT
(Function code data = 54)
This output signal comes ON when the inverter switches from local to remote mode.
For details of switching between remote and local modes, refer to Chapter 4, Section 4.2.2 "Remote and local modes."
„ Terminal [C1] wire break --
C1OFF
(Function code data = 59)
This output signal comes ON when the inverter detects that the input current to terminal [C1] drops below 2 mA interpreting
it as the terminal [C1] wire broken.
„ Speed valid --
DNZS
(Function code data = 70)
This output signal comes ON when the reference speed or detected one exceeds the stop frequency specified by function
code F25. It goes OFF when the speed is below the stop frequency for 100 ms or longer.
Under vector control with speed sensor, F38 switches the decision criterion between the reference speed and detected one.
Under vector control without speed sensor, the reference speed is used as a decision criterion. (
Refer to the descriptions
of F25 and F38.)
„ Alarm output (for any alarm) --
ALM
(Function code data = 99)
This output signal comes ON if any of the protective functions is activated and the inverter enters Alarm mode.
„ Enable circuit failure detected --
DECF
(Function code data = 101)
This output signal comes ON when the inverter detects a failure of the Enable circuit.
(Refer to Chapter 6 "TROUBLESHOOTING.")
„ Enable input OFF --
EN OFF
(Function code data = 102)
This output signal comes ON when the terminal [EN] input is turned OFF.
„ Braking transistor broken --
DBAL
(Function code data = 105)
If the inverter detects a breakdown of the braking transistor, it issues the braking transistor alarm (
dba
) and also the output
signal
DBAL
. Detection of braking transistor broken can be cancelled by H98. (40 HP or below)
( Refer to the description of H98.)
Breakdown of the braking transistor could lead to the secondary breakdown of the braking resistor and inverter’s
internal units. Use this output signal
DBAL
to detect abnormal operation of the built-in braking transistor and to
cut off power to the magnetic contactor in inverter primary circuits, for preventing spread of the damage.