Mitsubishi Electric FR-A701 Instrucion Manual page 36

(3) Switches of the FR-A7AP
• Encoder specification selection switch (SW1)
Select either differential line driver or complementary
It is initially set to the differential line driver. Switch its position according
to output circuit.
• Terminating resistor selection switch (SW2)
Select 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)
OFF : without internal terminating resistor
REMARKS
· Set all swithces to the same setting (ON/OFF).
· If the encoder output type is differential line driver, set the terminating resistor
switch to the "OFF" position when sharing the same encoder with other unit (NC
(numerical controller), etc) or a terminating resistor is connected to other unit.
• Motor used and switch setting
Motor
Mitsubishi standard motor with encoder
Mitsubishi high efficiency motor with
encoder
Mitsubishi constant-torque motor with
encoder
Vector control dedicated motor
Other manufacturer motor with encoder
*1 Set according to the motor (encoder) used.
*2 Choose a power supply (5V/12V/15V/24V) for encoder according to the encoder used.
CAUTION
SW3 switch is for manufacturer setting. Do not change the setting.
• Encoder specification
Item Encoder for SF-JR/HR/JRCA/HRCA
Resolution 1024 Pulse/Rev
Power supply
5VDC±10%
voltage
Current
150mA
consumption
A, B phases (90° phase shift)
Output signal form
Z phase: 1 pulse/rev
Output circuit Differential line driver 74LS113 equivalent
H level: 2.4V or more
Output voltage
L level: 0.5V or less
CAUTION
Encoder with resolution of 1000 to 4096 pulse/rev is recommended.
Encoder Specification
Selection Switch (SW1)
SF-JR Differential
SF-HR Differential
Others
*1
SF-JRCA Differential
SF-HRCA Differential
Others
*1
SF-V5RU Complimentary
–
*1
2048 Pulse/Rev
12VDC±10%
150mA
A, B phases (90° phase shift)
Z phase: 1 pulse/rev
Complimentary
H level: "Power supply for encoder-3V" or more
L level: 3V or less
Connection of motor with encoder (vector control)
Differential line
driver (initial status)
Complementary
Internal terminating
resistor-ON
(initial status)
Internal terminating resistor-OFF
Terminating Resistor
Selection Switch (SW2)
ON
ON
*1
ON
ON
*1
OFF
*1
Encoder for SF-V5RU
SW2
SW1
SW2
SW1
Power
Specifications
*2
5V
5V
*1
5V
5V
*1
12V
*1
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