Omron 3G3JX User Manual page 131

Inputting EMR to the digital input lets the motor go into "Emergency Shutoff" status (or free-run
status).
This status continues while EMR is turned on or until a reset signal is input.
To use the Inverter to control the mechanical brake (used for cranes, etc.), you need to connect the
safety output of the external safety relay to the brake control circuit in series.
Note 1: For the signal lines for the safety relay and emergency shutoff input, use shielded coaxial
cables with 2.8 mm or less in diameter and 2 m or less in length. The shield must be
grounded.
Note 2: All inductor parts such as the relay and contactor must have overvoltage protection circuits.
With switch S8 turned on, multi-function input S3 is automatically allocated to the emergency shutoff
signal EMR input terminal, and S4 to the reset signal input terminal. In this case, EMR is allocated
to function code C003, and reset (RS) to C004 automatically, and you cannot change these
parameters manually. The following table shows the status of switch S8 and the allocation of the
multi-function input.
Multi-function input
terminal No.
Status
1
2
3
4
5
(also used for PTC)
In short, when switch S8 is turned on, input terminal S5 automatically switches to "No function
allocated" status. To allocate a function to terminal S5 in this status, use the function mode.
If switch S8 is turned off later, input terminal S3 switches to "No function allocated" status. To
allocate a function, again use the function mode.
You can reset Emergency Shutoff status only via the dedicated input terminal (terminal S4 in the
above table). The STOP/RESET button on the Digital Operator cannot be used for resetting
Emergency Shutoff status.
* When switch S8 is ON, the EMR function is forcibly set to NC contact, and the RS function to NO
contact.(Parameters C013 and C014 are ignored)
Emergency shutoff selector S8
S8 = OFF
S8 = OFF → ON
(Default)
1
FW
RV
CF1 (only for emergency
shutoff)
CF2 (only for emergency
shutoff reset)
RS No function allocated
4-2 Function Mode
S8 = ON → OFF
2
FW
RV
EMR *
No function allocated
RS *
(normal reset)
No function allocated
4
3
FW
RV
RS
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