Changing The Control Logic - Mitsubishi Electric FR-E720-0.1K(SC) Instruction Manual

2.3.2

Changing the control logic

The input signals are set to sink logic (SINK) when shipped from the factory.
To change the control logic, the jumper connector above the control terminal must be moved to the other position.
To change to source logic, change the jumper connector in the sink logic (SINK) position to source logic (SOURCE) position
using tweezers, a pair of long-nose pliers etc. Change the jumper connector position before switching power ON.
Standard control circuit terminal model
(Example of FR-E740-3.7K)
NOTE
Fully make sure that the front cover has been reinstalled securely.
The capacity plate is placed on the front cover and the rating plate is on the inverter. Since these plates have the
same serial numbers, always reinstall the removed cover onto the original inverter.
The sink-source logic change-over jumper connector must be fitted in only one of those positions. If it is fitted in both
positions at the same time, the inverter may be damaged.
Terminal PC is always the common terminal for the safety stop input terminals (S1 and S2) of the inverter with safety
stop function regardless of sink/source logic.
(1) Sink logic type and source logic type
In sink logic, a signal switches ON when a current flows from the corresponding signal input terminal.
Terminal SD is common to the contact input signals. Terminal SE is common to the open collector output signals.
In source logic, a signal switches ON when a current flows into the corresponding signal input terminal.
Terminal PC is common to the contact input signals. Terminal SE is common to the open collector output signals.
Current flow concerning the input/output signal when sink logic is
selected
Sink logic
Current
STF
R
STR
R
SD
Inverter
RUN
SE
24VDC
Sink
connector
DC input (sink type)
<Example: QX40>
TB1
R
R
TB17
Current flow
Control circuit specifications
Safety stop function model
(Example of FR-E740-3.7KSC)
Current flow concerning the input/output signal when source logic is
selected
Source logic
PC
Current
STF
R
STR
R
Inverter
RUN
SE
24VDC
Current flow
Source
connector
DC input (source type)
<Example: QX80>
TB1
R
R
TB18
2
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