Connection to a motor with encoder (Vector
Using encoder-equipped motors together with a Vector control compatible option enables speed, torque, and positioning
control operations under orientation control, encoder feedback control, and full-scale Vector control.
This section explains wiring for use of the FR-A8AP.
Appearance and parts name of the FR-A8AP
Encoder type selection switch
Terminating resistor selection
Switches (SW2) for manufacturer
LED for manufacturer check
Terminals of the FR-A8AP
Encoder A-phase signal input terminal
Encoder A-phase inverse signal input terminal
Encoder B-phase signal input terminal
Encoder B-phase inverse signal input terminal
Encoder Z-phase signal input terminal
Encoder Z-phase inverse signal input terminal
Encoder power supply (positive) input terminal Input terminal for the encoder power supply.
Encoder power supply ground terminal
• When the encoder's output voltage differs from its input power supply voltage, the signal loss detection (E.ECT) may occur.
• Incorrect wiring or faulty setting to the encoder will cause a fault such as an overcurrent (E.OC[ ]) and an inverter overload
(E.THT). Correctly perform the encoder wiring and setting.
2. INSTALLATION AND WIRING
2.8 Connection to a motor with encoder (Vector control)
PIN and PO
are not used.
Used for installation to the inverter.
Connected with the encoder.
Switches the encoder type (differential line driver/complementary).
Used for extension.
Switch ON or OFF the internal terminating resistor.
Do not change the initial setting (both SW2-1 and SW2-2 switches: OFF
Connected to the option connector of the inverter.
A-, B- and Z-phase signals are input from the encoder.
Connect the external power supply (5 V, 12 V, 15 V, 24 V) and the encoder
power cable. When the encoder output is the differential line driver type,
only 5 V can be input. Make the voltage of the external power supply same
as the encoder output voltage. (Check the encoder specification.)
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