Mitsubishi Electric QD75P1N User Manual page 82

3 SPECIFICATIONS AND FUNCTIONS
POINT
Set the parameters, " Pr.5 Pulse output mode" and " Pr.23 Output signal logic selection", in accordance
with the specifications of a connected servo amplifier. If not, the motor may rotate in the opposite direction or
may not rotate at all.
Connection examples with a MELSERVO-J3 series servo amplifier are shown below.
Open collector connection (QD75P )
Pr.5 Pulse
output mode
CW/CCW
PULSE/SIGN
A phase/
B phase
Differential driver connection (QD75D )
Pr.5 Pulse
output mode
CW/CCW
PULSE/SIGN
A phase/
B phase
QD75P
Logic of
( Pr.23 Output
MR-J3-
signal logic
servo amplifier
selection (bit0))
Negative logic Negative logic
Positive logic Positive logic
Negative logic Negative logic
Positive logic Positive logic
Negative logic Negative logic
Negative logic Positive logic
Positive logic Negative logic
Positive logic Positive logic
QD75D
Logic of
( Pr.23 Output
MR-J3-
signal logic
servo amplifier
selection (bit0))
Negative logic Positive logic
Positive logic Negative logic
Negative logic Positive logic
Positive logic Negative logic
Negative logic Negative logic
Negative logic Positive logic
Positive logic Negative logic
Positive logic Positive logic
A
QD75P
PULSE F
PULSE COM
PULSE R
PULSE COM
A
QD75D
PULSE F+
PULSE F-
PULSE R+
PULSE R-
3 - 24
MELSEC-Q
MR-J3- A
servo amplifier
24VDC
OPC
DOCOM
PP
NP
SD
MR-J3- A
servo amplifier
PP
PG
NP
NG
SD