Electrical Installation
3
3.5 Control Circuit Wiring
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 91
A - Drive front
B - USB port board
C - Temporary placement holes
Figure 3.38 Remove the USB Port Board
2. Refer to the following figure and wire the control circuit.
WARNING! Fire Hazard. Tighten all terminal screws to the correct tightening torque. Connections that are too loose or
too tight can cause incorrect operation and damage to the drive. Incorrect connections can also cause death or
serious injury from fire.
NOTICE: Use shielded, twisted-pair wires and ground the shield to the ground terminal of the drive. Failure to obey
can cause electrical interference and unsatisfactory system performance.
NOTICE: Do not use control circuit wiring that is longer than 50 m (164 ft.) to supply the frequency reference with an
analog signal from a remote source. Failure to obey could cause unsatisfactory system performance.
A - Wire with a crimp ferrule
attached, or unsoldered wire with
the core wires lightly twisted
B - Pull back the shielding and lightly
twist the end with your fingers to
keep the ends from fraying.
C - Remove approximately 5.5 mm
(0.21 in.) of the covering at the
end of the wire if you do not use
crimp ferrules.
Figure 3.39 Wiring Procedure for the Control Circuit
Note:
• Do not solder the core wire. Soldered wire connections can become loose over time and cause unsatisfactory drive
performance.
• Prepare the wire ends of shielded twisted-pair wires as shown in Figure 3.40 to use an analog reference from an external
frequency setting potentiometer to set the frequency. Connect the shield to terminal GND of the drive.
A - Connect the cable sheath to
terminal GND of the drive.
B - Sheath
C - Insulate with electrical tape or
shrink tubing.
Figure 3.40 Preparing Ends of Shielded Cable
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