Mitsubishi Electric MELSEC Q Series User Manual page 70

● If the connection of the QD73A1 and the encoder is incorrect, the motor rotates at a power-on and Excessive error signal
(X17) turns on.
● To replace the positioning module AD70/A1SD70 with the QD73A1 while using the same equipment of the servo
amplifier, encoder, and external wiring in the existing system, check the setting of slide switch 1 (rotation direction
setting) of the AD70/A1SD70.
If the slide switch 1 (rotation direction setting) is off ("Negative voltage is output when the positioning address increases"
is set), set "1: Subtract when the phase A proceeds 90 degrees than phase B." for "Feed back pulse addition/subtraction
setting" in the switch setting of the QD73A1.
(2) Connection between the QD73A1 and each type of encoder
The following table shows the connection between the QD73A1 and each type of encoder.
Set the output type of the encoder to be used in "Encoder I/F setting" of the switch setting.
For details on "Encoder I/F setting" in the switch setting, refer to the following.
Page 100, Section 6.2
Encoder output type
Open collector output type
TTL output type
Differential output type
68
"Encoder I/F setting"
Open collector output
TTL output
Differential output
Connection
Phase A: Pin 13
Encoder
Phase B: Pin 5
Phase Z: Pin 6
Phase A: Pin 11
Phase B: Pin 10
Phase Z: Pin 7
Phase A: Pin 13
Encoder
Phase B: Pin 5
Phase Z: Pin 6
Phase A: Pin 11
Phase B: Pin 10
Phase Z: Pin 7
Phase A: Pin 13
Encoder
Phase B: Pin 5
Phase Z: Pin 6
Phase A: Pin 11
SN75113
Phase B: Pin 10
Phase Z: Pin 7
QD73A1
QD73A1
QD73A1