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3. SIGNALS AND WIRING
(2) Input signals
Control
mode
Signal Symbol
Connec-
tor pin
No.
Functions/Applications
I/O
division
P S T
Analog torque
limit
TLA
To use this signal in the speed control mode, set any of parameters
No. PD13 to PD16, PD18 to make TL available.
When the analog torque limit (TLA) is valid, torque is limited in the
full servo motor output torque range. Apply 0 to 10VDC across TLA-
LG. Connect the positive terminal of the power supply to TLA.
Maximum torque is generated at 10V. (Refer to section 3.6.1 (5).)
Resolution:10bit
Analog
input
Analog torque
command
TC
CN1-27
Used to control torque in the full servo motor output torque range.
Apply 0 to 8VDC across TC-LG. Maximum torque is generated at
8V. (Refer to section 3.6.3 (1).)
The torque at 8V input can be changed using parameter No. PC13.
Analog
input
Analog speed
command
VC
Apply 0 to 10VDC across VC-LG. Speed set in parameter No. PC12
is provided at 10V. (Refer to section 3.6.2 (1).)
Resolution:14bit or equivalent
Analog
input
Analog speed limit
VLA
CN1-2
Apply 0 to 10VDC across VLA-LG. Speed set in parameter No.
PC12 is provided at 10V (Refer to section 3.6.3 (3).).
Analog
input
Forward rotation
pulse train
Reverse rotation
pulse train
PP
NP
PG
NG
CN1-10
CN1-35
CN1-11
CN1-36
Used to enter a command pulse train.
In the open collector system (max. input frequency 200kpps):
Forward rotation pulse train across PP-DOCOM
Reverse rotation pulse train across NP-DOCOM
In the differential receiver system (max. input frequency 1Mpps):
Forward rotation pulse train across PG-PP
Reverse rotation pulse train across NG-NP
The command pulse train form can be changed using
parameter No. PA13.
DI-2
(3) Output signals
Control
mode
Signal Symbol
Connect
or pin
No.
Functions/Applications
I/O
division
P
S
T
Encoder Z-phase
pulse
(Open collector)
OP
CN1-33 Outputs the zero-point signal of the encoder. One pulse is output per
servo motor revolution. OP turns on when the zero-point position is
reached. (Negative logic)
The minimum pulse width is about 400 s. For home position return
using this pulse, set the creep speed to 100r/min. or less.
DO-2
Encoder A-phase
pulse
(Differential line
driver)
LA
LAR
CN1-4
CN1-5
Encoder B-phase
pulse
(Differential line
driver)
LB
LBR
CN1-6
CN1-7
Outputs pulses per servo motor revolution set in parameter No. PA15
in the differential line driver system. In CCW rotation of the servo
motor, the encoder B-phase pulse lags the encoder A-phase pulse
by a phase angle of /2.
The relationships between rotation direction and phase difference of
the A- and B-phase pulses can be changed using parameter No.
PC19.
DO-2
Encoder Z-phase
pulse
(Differential line
driver)
LZ
LZR
CN1-8
CN1-9
The same signal as OP is output in the differential line driver system.
DO-2
Analog monitor 1
MO1
CN6-3 Used to output the data set in parameter No. PC14 to across MO1-
LG in terms of voltage. Resolution 10 bits
Analog
output
Analog monitor 2
MO2
CN6-2 Used to output the data set in parameter No. PC15 to across MO2-
LG in terms of voltage. Resolution 10 bits
Analog
output
Содержание MELSERVO MR-J3 A Series
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