Mitsubishi Electric FR-A700 Series Installation Manuallines page 17

3.3.2 Wiring of control circuit
(1) Terminal layout
A1 B1
RL RM RH
SE RUN SU
(2) Instructions for wiring of the control circuit terminal
 Terminals 5, SD and SE are common to the I/O signals and isolated from each other. Do not earth (ground).
Avoid connecting the terminal SD and 5 and the terminal SE and 5.
 It is recommended to use the cables of 0.75mm
If the cable gauge used is 1.25mm
cables are run improperly, resulting in an operation panel contact fault.
 The wiring length should be 30m maximum.
 When using contact inputs, use two or more parallel micro-signal
contacts or twin contacts to prevent a contact faults since the control
circuit input signals are micro-currents.
 To suppress EMI, use shielded or twisted cables for the control
circuit terminals and run them away from the main and power circuits (including the 200V relay sequence circuit). For
the cables connected to the control circuit terminals, connect their shields to the common terminal of the connected
control circuit terminal. When connecting external power supply to the terminal PC, however, connect the shield of
the power supply cable to the negative side of the external power supply. Do not directly earth (ground) the shield to
the enclosure, etc.
 Do not apply a voltage to the contact input terminals (e.g. STF) of the control circuit.
 Always apply a voltage to the fault output terminals (A, B, C) via a relay coil, lamp, etc.
C1 A2 B2 C2 10E 10
RT AU STOP MRS RES
IPF OL FU SD SD STF
2
2
or more, the front cover may be lifted when there are many cables running or the
Control circuit terminal *
Terminal screw size: M3.5
2 5 4
Tightening torque: 1.2N·m
* Refer to instruction manuals of
SD CA AM 1
STR JOG CS PC
gauge for connection to the control circuit terminals.
options for the available control
terminals other than the standard
control circuit terminal.
Micro signal contacts
WIRING
Twin contacts
14