Wiring Instructions - Mitsubishi Electric FR-F740-00023-EC Instruction Manual

(2) Common terminals of the control circuit (PC, 5, SE)
Terminals PC, 5, and SE are all common terminals (0V) for I/O signals and are isolated from each other.
Avoid connecting the terminal PC and 5 and the terminal SE and 5.
Terminal PC is a common terminal for the contact input terminals (STF, STR, STOP, RH, RM, RL, JOG, RT, MRS, RES,
AU, CS).
The open collector circuit is isolated from the internal control circuit by photocoupler.
Terminal 5 is a common terminal for frequency setting signal (terminal 2, 1 or 4), analog current output terminal (CA)
and analog output terminal AM.
It should be protected from external noise using a shielded or twisted cable.
Terminal SE is a common terminal for the open collector output terminal (RUN, SU, OL, IPF, FU).
The contact input circuit is isolated from the internal control circuit by photocoupler.
(3) Signal inputs by contactless switches
The contacted input terminals of the inverter (STF, STR, STOP,
RH, RM, RL, JOG, RT, MRS, RES, AU, CS) can be controlled
using a transistor instead of a contacted switch as shown on the
right.
1.4.3

Wiring instructions

1) Use shielded or twisted cables for connection to the control circuit terminals and run them away from the main and
power circuits (including the 200V relay sequence circuit).
2) Use two or more parallel micro-signal contacts or twin contacts to
prevent a contact faults when using contact inputs since the
control circuit input signals are micro-currents.
3) Do not apply a voltage to the contact input terminals (e.g. STF) of the control circuit.
4) Always apply a voltage to the alarm output terminals (A, B, C) via a relay coil, lamp, etc.
5) It is recommended to use the cables of 0.75mm
If the cable gauge used is 1.25mm
the cables are run improperly, resulting in an operation panel contact fault.
6) The wiring length should be 30m maximum.
Wiring of the control circuit of the 01800 or more
For wiring of the control circuit of the 01800 or more, separate away from wiring of the main circuit.
Make cuts in rubber bush of the inverter side and lead wires.
Rubber bush
(view from the inside)
Make cuts along the lines inside with
a cutter knife and such.
2
gauge for connection to the control circuit terminals.
2
or more, the front cover may be lifted when there are many cables running or
Control circuit specifications
Inverter
PC
STF, etc.
External signal input using transistor
Micro signal contacts
<Wiring>
+24V
R
Twin contacts
1
15