2.8 Connection to a motor with encoder (Vector control) control operations under orientation control, encoder feedback control, and full-scale Vector control. Using encoder-equipped motors together with a Vector control compatible option enables speed, torque, and positioning This section explains wiring for use of the FR-A8AP. Appearance and parts name of the FR-A8AP Front view Rear view (a) Terminal layout (a) (a) (d) (h) (f) 1 2 O N (g) SW2 PIN and PO are not used. (c) O N SW3 (a) (e) 1 2 3 4 SW1 (a) (a) (b) Terminals of the FR-A8AP 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. 88 2. INSTALLATION AND WIRING 2.8 Connection to a motor with encoder (Vector control) PA1 PB1 PZ1 PG PG PIN PA2 PB2 PZ2 SD SD PO d t u P s Symbol Name Description Refer to page (a) Mounting hole Used for installation to the inverter. — (b) Terminal block Connected with the encoder. 92 (c) Encoder type selection switch (SW3) Switches the encoder type (differential line driver/complementary). 89 (d) CON2 connector Used for extension.
— (e) Terminating resistor selection switches (SW1) Switch ON or OFF the internal terminating resistor. 89 (f) Switches (SW2) for manufacturer setting Do not change the initial setting (both SW2-1 and SW2-2 switches: OFF 1 O). — (g) Board mounted option connector 2 N Used to connect this product to the option connector on the inverter. 19 (h) LED for manufacturer check Not used. — Terminal symbol Terminal name Description PA1 Encoder A-phase signal input terminal A-, B- and Z-phase signals are input from the encoder.
PA2 Encoder A-phase inverse signal input terminal PB1 Encoder B-phase signal input terminal PB2 Encoder B-phase inverse signal input terminal PZ1 Encoder Z-phase signal input terminal PZ2 Encoder Z-phase inverse signal input terminal PG Encoder power supply (positive) input terminal Input terminal for the encoder power supply. Connect the external power supply 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.) SD Encoder power supply ground terminal PIN Not used. PO NOTE