Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 38

3. SIGNALS AND WIRING
Note 1. To prevent an electric shock, always connect the protective earth (PE) terminal (terminal marked
protective earth (PE) of the control box.
2. Connect the diode in the correct direction. If it is connected reversely, the servo amplifier will be faulty and will not output signals,
disabling the emergency stop and other protective circuits.
3. If the controller does not have forced stop function, always install the forced stop 2 switch (Normally closed contact).
4. When starting operation, always turn on the forced stop (EM1). (Normally closed contact) By setting " 1
No.PA04 the forced stop (EM1) can be made invalid.
5. Use MRZJW3-SETUP 221E. (Refer to section 11.4)
6. Use SSCNET cables listed in the following table.
7. The wiring of the third and subsequent axes is omitted.
8. Up to sixteen axes may be connected. Refer to section 3.13 for setting of axis selection.
9. Make sure to put a cap on the unused CN1A CN1B.
10. Supply 24VDC 10
The current capacity can be decreased by reducing the number of I/O points. Refer to section 3.7.2 (1) that gives the current value
necessary for the interface.
11. Malfunction (ALM-A/ALM-B) turns on in normal alarm-free condition. (Normally closed contact)
12. The pins with the same signal name are connected in the servo amplifier.
13. The signal can be changed by parameter No.PD07, PD09.
14. For the sink I/O interface. For the source I/O interface, refer to section 3.7.3.
15. Devices can be assigned for DI1-A DI2-A DI3-A DI1-B DI2-B DI3-B with controller setting. For devices that can be assigned,
refer to the controller instruction manual. The assigned devices are for the Q173DCPU Q172DCPU Q173HCPU Q172HCPU,
Q170MCPU, QD74MH , QD75MH and LD77MH .
16. Select the servo motor to be used as below. (Refer to section 3.14.)
OFF: Rotary servo motor, ON: Linear servo motor
17. When you use a linear servo motor or direct drive motor, use MBR (Electromagnetic brake interlock) for an external brake
mechanism.
Standard cord inside panel
Standard cable outside panel
Long-distance cable
250mA current for interfaces from the outside. 250mA is the value applicable when all I/O signals are used.
Cable Cable model name
MR-J3BUS M
MR-J3BUS M-A
MR-J3BUS M-B
3 - 5
) of the servo amplifier to the
" in parameter
Cable length
0.15 to 3m
5 to 20m
30 to 50m