Omron MX2 Series User Manual page 77

Addition of Dedicated Safety Terminals and Deletion of Safety
Function Selector Switch
The 3G3MX2-E Series Inverter had a safety function selector switch and used the multi-function input
terminals 3 and 4 for the safety inputs GS1 and GS2.
For the 3G3MX2-EV2 Series Inverter, terminals GS1 and GS2 are added as safety terminals.
Moreover, dedicated safety power supply terminals P24S and CMS are added, and the safety function
selector switch is eliminated. Refer to 2-3-3 Arrangement and Function of Control Circuit Terminal
Block on page 2-14 for terminals and wiring.
To use the safety function (STO function), remove the short-circuit wires, and wire the safety outputs to
the terminals GS1 and GS2. To disable this function, short-circuit the terminals GS1 and GS2 to the ter-
minal P24S (in the default state, short-circuit wires are attached). For power supply, use the P24S and
CMS terminals for safety function. Refer to 7-10-3 Wiring and Usage of the Safety Function on page
7-103 for the terminal block layout.
Due to the addition of the dedicated terminals, Multi-function Input 3 Selection (C003) and Multi-func-
tion Input 4 Selection (C004) no longer provide 77 (GS1: Safety input 1) and 78 (GS2: Safety input 2).
As with the 3G3MX2-E Series Inverter, the EDM function is a switch that assigns the EDM switch to the
multi-function output 11. The switch assigning the EDM function is not related to multi-function inputs.
Terminating Resistor for Modbus Communication
The resistance value of the built-in terminating resistor is changed from 200
the terminating resistor, turning ON the same terminating resistor selector switch as in the
3G3MX2-E Series Inverter enables the built-in terminating resistor. Refer to 2-2-2 Terminal Blocks on
page 2-10 for the position of the terminating resistor.
If communications are unstable, install terminating resistors that match the cable's characteristic
impedance at both ends of the communications cable (refer to 8-2 RS485 Terminal Arrangement and
Connection on page 8-4 for details).
Addition of Errors
The detections of Analog current input error (E26.) and STO internal fault error (E99.) are added.
They are not fatal faults.
For details on each alarm code, refer to Section 10 Troubleshooting.
Multi-function Compact Inverter 3G3MX2-EV2 User's Manual (I666-E1)
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