144
When the rotation direction is changed, the encoder A-phase and B-phase output phases are also
changed. When not set, + voltage is for forward rotation and A-phase advance; when set, + voltage if for
reverse rotation and A-phase advance (and - voltage is for forward rotation and B-phase advance).
Therefore wiring changes are unnecessary for encoder signals to the position controller.
D
Encoder Pulse Input Signals (A-, B-, S-phase)
Inputs signals output from the Servomotor encoder. In S-phase, servo sensor U-, V-, W-, and Z-phase
are transmitted according to A- and B-phase logic.
D
Encoder Power Supply Grounds (1 to 3: E0V) and
Encoder Power Supply 5 V (E5V: 4 to 6)
O5.2
±
0.1 V as the power supply for the Servomotor encoder. The encoder power supply can-
not be used for other purposes.
H
CN3: Parameter Unit Input Specifications
Pin No.
Signal name
Function
I/O interface
1
TXD+
Transmission data +
This is the send data line-driver output to the
P
U i (
l
)
2
TXD–
Transmission data –
Parameter Unit (or a personal computer).
3
RXD+
Reception data +
This is the send data line-driver input from the
P
U i (
l
)
4
RXD–
Reception data –
Parameter Unit (or a personal computer).
5
PRMU
Unit switching
This is the switching terminal for a Parameter
Unit or personal computer. If the pin is open, it
is for a personal computer. If connected to
+5V, it is for a Parameter Unit.
6
RT1
Termination resistance
enabled/disabled
This is the termination resistance terminal for
the line receiver. For 1-to-1 communications or
7
RT2
enabled/disabled
the line receiver. For 1 to 1 communications or
for the final Servo Driver, short-circuit
RT1-RT2.
8
+5V
+5 V output
This is the +5 V output to the Parameter Unit.
9
GND
Ground
D
Pin Arrangement
1
TXD+
2
TXD–
5
PRMU
6
RT1
7
RT2
9
GND
3
RXD+
8
+5V
4
RXD–
Transmission
data +
Transmission
data –
Reception
data +
Reception
data –
Unit
switching
Termination
resistance
on/off
+5-V output
Ground
Specifications
Chapter 5
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