Mitsubishi Electric 800 Series Instruction Manual page 34


For the FR-A860-01440 or higher, and when a 75 kW or higher motor is used, always connect a DC reactor. (To select a DC reactor, refer to
page 672, and select one according to the applicable motor capacity.)
When connecting a DC reactor, if a jumper is installed across terminals P1 and P/+, remove the jumper before installing the DC reactor. (The
jumper is not installed for the FR-A860-01440 or higher.)

When using separate power supply for the control circuit, remove the jumper between R1/L11 and S1/L21.

The function of these terminals can be changed with the input terminal assignment (Pr.178 to Pr.189). (Refer to

Terminal JOG is also used as the pulse train input terminal. Use Pr.291 to choose JOG or pulse.

Terminal input specifications can be changed by analog input specification switchover (Pr.73, Pr.267). To input a voltage, set the voltage/current
input switch OFF. To input a current, set the voltage/current input switch ON. Terminals 10 and 2 are also used as a PTC input terminal. (Pr.561)
(Refer to page 321.)

It is recommended to use 2 W 1 kΩ when the frequency setting signal is changed frequently.

A brake resistor is provided with the FR-A860-00090 or lower. Connect the provided brake resistor to terminals P3 and PR as required.

Connect a brake resistor across terminals P3 (P/+) and PR. (The terminal PR is equipped in FR-A860-01080 or lower.) Install a thermal relay to
prevent overheating and damage of discharging resistors. (Refer to

The function of these terminals can be changed with the output terminal assignment (Pr.195, Pr.196). (Refer to
 The function of these terminals can be changed with the output terminal assignment (Pr.190 to Pr.194). (Refer to
 The terminal F/C(FM) can be used to output pulse trains as open collector output by setting Pr.291.
 Not required when calibrating the scale with the operation panel (FR-LU08) or the parameter unit (FR-PU07).
NOTE
• To prevent a malfunction due to noise, keep the signal cables 10 cm or more away from the power cables. Also, separate the
main circuit cables at the input side from the main circuit cables at the output side.
• After wiring, wire offcuts must not be left in the inverter. Wire offcuts can cause an alarm, failure or malfunction. Always keep
the inverter clean. When drilling mounting holes in an enclosure etc., take caution not to allow chips and other foreign matter
to enter the inverter.
• Set the voltage/current input switch correctly. Incorrect setting may cause a fault, failure or malfunction.
• The terminals S1, S2, SIC, So (SO), and SOC are for manufacturer setting. Do not connect anything to these. Doing so may
cause an inverter failure.
Do not remove the shorting wires across the terminals S1 and PC, the terminals S2 and PC, and the terminals SIC and SD.
Removing either shorting wire disables the inverter operation.
Terminal connection diagrams
page 65.)
INSTALLATION AND WIRING
page 415.)
page 370.)
page 370.)
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