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Control circuit specifications
2.3.4
Wiring instructions
1)
It is recommended to use the cables of 0.75mm
connection to the control circuit terminals.
If the cable gauge used is 1.25mm
be lifted when there are many cables running or the cables are
run improperly, resulting in an operation panel contact fault.
2)
The wiring length should be 30m (98.43feet) (200m (656.17feet)
for terminal FM) maximum.
3)
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.
4)
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).
5)
Do not apply a voltage to the contact input terminals (e.g. STF) of the control circuit.
6)
Always apply a voltage to the fault output terminals (A, B, C) via a relay coil, lamp, etc.
Wiring of the control circuit of the FR-A720-02800 (FR-A740-01440) or higher
For wiring of the control circuit of the FR-A720-02800 (FR-A740-01440) or higher, 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)
32
2
or more, the front cover may
Make cuts along the lines inside with
a cutter knife and such.
2
gauge for
Micro signal contacts
Twin contacts
<Wiring>
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