Mitsubishi Electric Melservo-J3 Series MR-J3-B, Instruction Manual

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16 - 24
16. INDEXER POSITIONING OPERATION
(b) Output device
POINT
Output devices assigned to the CN6 connector pins can be used with RX of
CC-Link.
Device Symbol
Connector
pin No.
Functions/Applications
Ready RD CN6-14 Refer to section 16.2.2 (2) for details of the device.
Trouble ALM CN6-15 ALM turns off when the power is switched off or the protective circuit is activated to
shut off the base circuit. Without alarm occurring, ALM turns on in about 1.5s after
power-on.
The logic is opposite to RX(n
＋ 1)A or RX(n ＋ 3)A.
Home position return
completion ZP CN6-16
Refer to section 16.2.2 (2) for details of the device.
(2) Input signals
Device Symbol
Connector
pin No.
Functions/Applications
Manual pulse generator PP CN6-6 Not used in indexer positioning operation.
NP CN6-19
(3) Output signals
Refer to section 4.8.2 for the output interfaces (symbols in the I/O Division field in the table) of the
corresponding connector pins.
Device Symbol
Connector
pin No.
Functions/Applications
I/O
division
Encoder A-phase pulse
(differential line driver) LA
LAR
CN6-11
CN6-24 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 B-phase pulse
(differential line driver) LB
LBR
CN6-12
CN6-25
Encoder Z-phase pulse
(differential line driver)
LZ
LZR
CN6-13
CN6-26 Outputs the zero-point signal of the encoder in the differential line driver
system. One pulse is output per servo motor revolution. This signal 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
(4) Power supply
Signal Symbol
Connector
pin No.
Functions/Applications
I/O
division
Digital I/F power supply
input DICOM CN6-5 Used to input 24VDC (24VDC 10% 150mA) for I/O interface. The power
supply capacity changes depending on the number of I/O interface points
to be used. Connect the plus of 24VDC terminal external power supply for
the sink interface.
Digital I/F common DOCOM CN6-17 Common terminal for input signals such as DOG and EMG. Pins are
connected internally. Separated from LG. Connect the plus of 24VDC
terminal external power supply for the source interface.
MR-HDP01 open
collector power input
OPC CN6-18 Not used in indexer positioning operation.
Control common LG CN6-23 Common terminal for the differential line driver of the encoder pulses
(LA LAR LB LBR LZ LZR).
Shield SD Plate Connect the external conductor of the shield cable.