2-5
2-1 Installation
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
   2
Design
Names of Parts Inside the Terminal Block Cover
 Note. Refer to Chapter 3 "Operation" for the display and operating controls. 
Name Description
Modbus-RTU 
Termination resistor 
selector switch
Use this Terminal Resistor selector switch for RS-485 terminals on the control circuit 
terminal block. When this switch is turned ON, the internal 200 
Ω
 Resistor is connected. 
Safety function 
selector switch
Turn this switch ON when using the safety function. Turn OFF the power before 
turning this switch ON/OFF.For details, refer to "Safety Function" on page 5-170.
EDM function 
selector switch
Turn this switch ON when using the EDM output of the safety function. Turn OFF 
the power before turning this switch ON/OFF. For details, refer to "Safety Function" 
on page 5-170.
USB connector Use this mini-B USB connector to connect a PC.
Even when the Inverter is being operated by a PC, etc., via USB connection, it can 
still be operated using the Digital Operator.
Connector for 
Digital Operator
Use this connector to connect the Digital Operator. 
Connector for 
optional board
Use this connector to mount the optional board.
Communications Units and other options can be connected. 
Control circuit 
terminal blocks A 
and B
These terminal blocks are used to connect various digital/analog input and output 
signals for inverter control, etc. 
Multi-function 
contact terminal 
block
Use this SPDT contact terminal block for relay outputs. 
Main circuit 
terminal block
Use this terminal block to connect an output to the motor and Braking Resistor, etc.
Also, use this terminal block to connect the inverter to the main power supply. 
CHARGE 
indicator (Charge 
indicator LED)
This LED indicator is lit if the DC voltage of the main circuit (between terminals P/
+2 and N/−) remains approx. 45 V or above after the power has been cut off. Before 
wiring, etc. confirm that the Charge LED indicator is turned OFF. 
Modbus-RTU Termination resistor selector switch
Safety function selector switch
Connector for optional board
Multi-function contact terminal block
CHARGE indicator
Main circuit terminal block
OFF
(Factory default)
ON
USB connector (mini-B)
Connector for Digital Operator (RJ45)
EDM function selector switch
Control circuit terminal block A
Control circuit terminal block B
Disable 
(Factory default)
Enable
P1 terminal 
(Factory default)
EDM output