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System Configuration and Wiring
Precautions when wiring
The inner circuit is still energized with a high voltage after the input power is turned off. Do
not touch the inverter for at least 5 minutes after turning off the power.
Main circuit
(1) The inverter will be damaged if you invert the connections of the power input terminal
and motor output terminal (U/L1, V/L2, W/L3). Absolutely do not invert connections.
(2) Do not ground the main circuit terminal.
(3) Do not short motor output terminals (U/L1, V/L2, W/L3) together.
(4) The GND terminal (E) is the frame ground (FG) for the inverter.
(5) Be sure to use insulated crimp terminals for connecting to the main circuit terminals.
Control circuit
(1) Use the wires with the insulation removed, as shown below, to wire the control circuit.
If the exposed area is too long, there is the possibility of a short occurring with the
adjacent wire. If it is too short, the wire could be pulled. Twist the bare wires when
wiring, so that they will not get loose.
(2) Use a wire which diameter is less than 0.9 mm when wiring using a bar terminal or single
wire. If it is larger than 0.9 mm, the screw thread may be damaged when tightened.
(3) Do not apply more than 24VDC, 50mA to the output terminals (O1, C1), or apply
voltage to terminal in reverse.
(4) Input terminal configuration is internally pulled up from approx. +12V by approx. 3.3k
Ω
.
You can control by contact or by open collector output. Do not apply external voltage.
NPN logic PNP logic
(5) Do not short the frequency setting power source terminal (5V) and ground for control
terminal (G).
(6) To directly drive the relay by the output terminals (O1, C1), mount a flywheel diode (FD).
(7) Use shielded wires for the cable to be connected to the control circuit.
FD(100V
1A)
R Y
C
1
O1
<Examples> Fuji Electric ERA15-01
ERB12-01
Pay attention to polarity of diode.
Photo coupler
5.5 mm ± 1 mm
power
source
I
1 ~
I
5
+12V
Internal circuits of I1 – I5 are as follows:
G
I
1 ~
I
5
+12V
Internal circuits of I1 – I5 are as follows:
+12V
power
source