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3. SIGNALS AND WIRING
Note 1. To prevent an electric shock, always connect the protective earth (PE) terminal of the (terminal marked ) servo amplifier to
the 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 (EMG) and other protective circuits.
3. The emergency stop switch(normally closed contact) must be installed.
4. Supply 24VDC 10 300mA current for interfaces from the outside. 300mA is the value applicable when all I/O signals are
used. The current capacity can be decreased by reducing the number of I/O points. Refer to section 3.8.2 (1) that gives the
current value necessary for the interface.
5. Trouble (ALM) turns on in normal alarm-free condition.
6. The pins with the same signal name are connected in the servo amplifier.
7. Use MRZJW3-SETUP 221E.
8. Personal computers or parameter units can also be connected via the CN3 connector, enabling RS-422 communication. Note
that using the USB communication function (CN5 connector) prevents the RS-422 communication function (CN3 connector)
from being used, and vice versa. They cannot be used together.
MR-PRU03
parameter unit
CN3
EIA568-compliant cable (10BASE-T cable, etc.)
RS-232C/RS-422 conversion cable
Recommended product: Interface cable
DSV-CABV
(Diatrend)
Personal computer
Servo amplifie
r
or
To RS-232C connector
9. Use an external power supply when inputting a negative voltage.
10. For the sink I/O interface. For the source I/O interface, refer to section 3.8.3.