Fuji Electric frenic mini series, User Manual

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E20 and E27 Status Signal Assignment to [Y1], [30A], [30B] and [30C]
E20 to E27 may assign output signals (listed below) to terminals [Y1] (transistor switch)
and [30A], [30B] and [30C] (mechanical relay contacts) which are general-purpose
programmable output terminals.
These function codes may also switch the logic system between normal and negative to
define the property of those output terminals so that the inverter logic may interpret either
the ON or OFF status of each terminal as active.
Terminals [30A], [30B], and [30C] are mechanical relay contacts. In the normal logic, if an
alarm occurs, the relay will be excited so that [30A] and [30C] will be short-circuited,
signaling an occurrence of the error to external equipment. On the other hand, in the
negative logic, the relay will cut off the excitation current to open [30A] and [30C]. This
may be useful for the implementation of failsafe power systems.
The default setting is normal logic, that is "Active ON."
To assign negative logic input to any input terminal, set the function code to the value of
1000s shown in ( ) in the table below. To keep explanations as simple as possible, the
examples shown below are all written for the normal logic system.
When negative logic is active, the inverter switches all output signals to the active
side (for example, the alarm side). To avoid system malfunctions caused by this,
interlock the signals to keep them ON using an external power source. To use
negative logic with the output signal, set the data of 1000s in ( ) as listed in the
table below.
Set E20 or E27 to: To assign the following status
signals to terminals:
Output signal symbols
0 (1000) Inverter running (Speed > 0) (RUN1)
1 (1001) Frequency equivalence (FAR)
2 (1002) Frequency level detection (FDT)
3 (1003) Undervoltage voltage detection (LU)
5 (1005) Torque limiting (Current limiting) (IOL)
6 (1006) Auto-restart after recovery of power (IPF)
7 (1007) Early warning for motor overload (OL)
26 (1026) Retry in operation (TRY)
30 (1030) Service life alarm (LIFE)
35 (1035) Inverter running (RUN2)
36 (1036) Under overload prevention control (OLP)
37 (1037) Current detection (ID)
41 (1041) Low level current detection (IDL)
99 (1099) Alarm relay output (for any fault) (ALM)
Terminal function assignment and data setting
Inverter running (Speed > 0)--(RUN)
(Function code data = 0)
This output signal is used to tell the external equipment that the inverter is running with a
speed greater than 0. It switches ON when the inverter output frequency exceeds the starting
frequency of the motor. It switches OFF when the output frequency is less than the starting
frequency or the inverter is DC-braking the motor.
If this signal is assigned to terminal [Y1] in negative logic (active OFF), it can be
used to indicate the inverter stopping its output..