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Connection of motor with encoder (vector control)
(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
• Motor used and switch setting
• Encoder specification
REMARKS
· Set all switches 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
Encoder Specification
Selection Switch (SW1)
Terminating Resistor
Selection Switch (SW2)
Power
Specifications
*2
Mitsubishi standard motor with encoder
Mitsubishi high efficiency motor with
encoder
SF-JR Differential ON 5V
SF-HR Differential ON 5V
Others
*1 *1 *1
Mitsubishi constant-torque motor with
encoder
SF-JRCA Differential ON 5V
SF-HRCA Differential ON 5V
Others
*1 *1 *1
Vector control dedicated motor SF-V5RU Complementary OFF 12V
Other manufacturer motor with encoder –
*1 *1 *1
*1 Set according to the motor (encoder) used.
*2 Choose a power supply (5V/12V/15V/24V) for encoder according to the encoder output voltage.
CAUTION
SW3 switch is for manufacturer setting. Do not change the setting.
Item Encoder for SF-JR Encoder for SF-V5RU
Resolution 1024 Pulse/Rev 2048 Pulse/Rev
Power supply
voltage
5VDC±10% 12VDC±10%
Current
consumption
150mA 150mA
Output signal form
A, B phases (90° phase shift)
Z phase: 1 pulse/rev
A, B phases (90° phase shift)
Z phase: 1 pulse/rev
Output circuit Differential line driver 74LS113 equivalent Complementary
Output voltage
H level: 2.4V or more
L level: 0.5V or less
H level: "Power supply for encoder-3V" or more
L level: 3V or less
CAUTION
Encoder with resolution of 1000 to 4096 pulse/rev is recommended.
Complementary
Differential line
driver (initial status)
1
2
3
4
O
N
1
2
O
N
SW2
SW1
SW3
FR-A7AP
Internal terminating
resistor-ON
(initial status)
Internal terminating resistor-OFF
1
2
3
4
O
N
1
2
O
N
SW2
SW1
SW3
FR-A7AP