16
Precautions for Control Circuit Wiring
Take the following precautions when wiring.
1, 2, 3...
1. Separate the control signal line from power lines. Otherwise a
malfunction might occur.
2. For the frequency setting signal (analog), use a shielded lead
and be sure that the signal is terminated properly.
Armor
Never connect
Insulate these parts
with insulating tape
Connect shielded sheath
to main circuit grounding
terminal G (E).
Shielded
sheath
3. The wiring length of the control signal line must be 50 m or less.
4. To drive the contact input signal by transistor, use one having
ratings of 50 V 50 mA or more. Circuit leakage current at signal
OFF must be 100 µA or less.
5. To drive an inductive load (relay coil, etc.) by multifunction pho-
to-coupler output, be sure to insert a free wheel diode.
=
13.14
Free wheel diode
(100V, 100 mA or more)
48 V max.
50 mA max.
7
3G3XV
1-5 Operation
1-5-1 Checking Before Operation
Check the following items after completion of installation and wir-
ing:
•No fault in wiring. Especially, the power supply is connected to the
output terminals T1 (U), T2 (V), and T3 (W).
•No short-circuit because of wiring contamination (dust, oil, etc.).
•Screws and terminals are not loosened. Wiring is provided prop-
erly.
•Wiring is not grounded.
•Load status is good.
For safe operation, before operation, the motor must be able to
operate alone by separating it from the coupling or belt which con-
nects the motor and machine.
When the motor is operated with the machine directly connected,
pay close attention.
Operation Section 1-5
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