Mitsubishi Electric 800 Series Instruction Manual page 62

Switches of the FR-A8AP
• Encoder type selection switch (SW3)
Selects either the differential line driver or complementary setting.
It is initially set to the differential line driver. Switch its position according to the
output circuit.
• Terminating resistor selection switch (SW1)
Selects ON/OFF of the internal terminating resistor.
Set the switch to ON (initial status) when an encoder output type is differential
line driver, and set to OFF when complementary.
ON: with internal terminating resistor (initial status)
without internal terminating resistor
OFF:
NOTE
• Set all switches to the same setting (ON/OFF).
• Set the switch "OFF" when sharing an encoder with another unit (NC
(computerized numerical controller), etc.) having a terminating resistor
under the differential line driver setting.
• The SW2 switch is for manufacturer setting. Do not change the setting.
Encoder specification
Item
Resolution 0 to 4096 Pulse/Rev (setting by Pr. 369)
Power supply voltage 5 V, 12 V, 15 V, 24 V
A, B phases (90° phase shift)
Output signal form
Z phase: 1 pulse/rev
Output circuit Differential line driver or complementary
NOTE
• Encoder with resolution of 1000 to 4096 pulse/rev is recommended.
Connection of motor with encoder (vector control)
Specification
Differential line
driver (initial status)
1 O
2 N
SW2
SW3
Internal terminating
resistor-ON
(initial status)
Internal terminating
resistor-OFF
INSTALLATION AND WIRING
Complementary
1 O
N
2
SW2
SW3
2
61