Connection To A Motor With Encoder (Vector Control) - Mitsubishi Electric 800 Series Instruction Manual

2.7
Connection to a motor with encoder (Vector
control)
Using encoder-equipped motors together with a Vector control compatible option (FR-A8AP E kit) enables speed and torque
control operations under encoder feedback control and full-scale Vector control.
This section shows connection examples using the FR-A8AP E kit.
 Appearance and parts name of the FR-A8AP
Terminal layout
Symbol
(a) Mounting hole
(b) Terminal block
Encoder type selection switch
(c)
(SW3)
(d) CON2 connector
Terminating resistor selection
(e)
switches (SW1)
Switches (SW2) for manufacturer
(f)
setting
(g) Connector
(h) LED for manufacturer check
 Terminals of the FR-A8AP
Terminal
symbol
PA1 Encoder A-phase signal input terminal
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.
SD Encoder power supply ground terminal
PIN
Not used.
PO
NOTE
• 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.
60
2. Installation and Wiring

2.7 Connection to a motor with encoder (Vector control)

(a)
(d)
(f)
PIN and PO
(c)
are not used.
(e)
(a)
Name
Used for installation to the inverter.
Connected with the encoder.
Switches the encoder type (differential line driver/complementary).
Not used.
Switch ON or OFF the internal terminating resistor.
Do not change the initial setting (both SW2-1 and SW2-2 switches: OFF
).
1 O
N
2
Connected to the option connector of the inverter.
Not used.
Terminal name
Front view
(a)
(h)
1 O
2 N
SW2
SW3
(b) (a)
Description
A-, B- and Z-phase signals are input from the encoder.
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 the same as the encoder output
voltage. (Check the encoder specification.)
Rear view
Refer to page
—
61
—
61
—
13
—
Description
(a)
(a)