Omron M1 Series User Manual page 565

RUN command
Safety input 1 terminal [SF1]
Safety input 2 terminal [SF2]
Motor power ON state
EDM output
• To ensure that the safety function works normally, evaluate the entire safety system on every possi-
ble risk factor.
• The safety function is not intended to shut off the input or to isolate the output electrically. Be sure to
shut off the input power supply to the inverter before attempting installation or maintenance.
• For the safety function, always use a cable length of 20 m or shorter.
• To restart the inverter after the safety function is activated, follow the steps below. Be sure to turn
OFF the RUN command before you reset the safety equipment. Resetting the host safety equipment
with the RUN command ON may cause the inverter to restart suddenly.
1. Turn OFF the RUN command.
2. Release the emergency stop switch.
3. Reset the host safety equipment.
4. After resetting the safety equipment, make sure that the inputs of the [SF1] and [SF2] terminals
of the inverter are ON.
5. Turn ON the RUN command to restart the inverter.
• Setting of the start check function is recommended to prevent sudden operation.
• It takes 50 ms or shorter from when the safety input is input till when the inverter shuts off the out-
put.
• Install the inverter in a control panel with an enclosure rating of IP54 or higher.
• If minute pulses are to be input to the [SF1] and [SF2] terminals based on the diagnosis of the safety
PLC, ensure that the pulse width is less than 1 ms.
• The logical mismatch between the [SF1] and [SF2] terminals based on the signal delay must be
within 50 ms. If it exceeds 50 ms, an EN circuit failure (alarm code: ECF) is output.
M1 Series Standard Type User's Manual (I669)
off
STO state Normal state
off
20 ms max.
on
7 Other Functions
on
on
off
7
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