Safety Input Signals - Omron R88D-KN01L-ECT-L User Manual

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Safety Input Signals

There are 2 safety input circuits to operate the STO function.
Signal
Symbol
name
Safety SF+
input 1
SF–
Safety SF2+
input 2
SF2–
• When safety input 1 or 2 turns "OFF," the STO function will start operating within 5 ms of the input,
and the motor output force will be reduced to 0.
• Connect the equipment so that the safety input circuit is turned "OFF" to operate the STO function.
• Set the operation when the safety input turns "OFF" in the Fault reaction option code (605E hex).
Precautions for Correct Use Precautions for Correct Use
L pulses for self-diagnosis of safety device
When you connect a safety device, such as a safety controller or a safety sensor, the safety
output signal of the device may include L pulses for self-diagnosis. To avoid malfunction due
to the L pulses for self-diagnosis, a filter that removes the L pulses is built into the safety
input circuit. If the OFF time of the safety input signal is 1 ms or less, the safety input circuit
does not recognize it as "OFF." To make sure that "OFF" is recognized, maintain the OFF
status of safety input signal for at least 5 ms.
Safety
input signal
Servo Drive
operation
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
Pin No.
CN8-4 The upper arm drive signal of the power
transistor inside the Servo Drive is cut off.
CN8-3
CN8-6 The lower arm drive signal of the power
transistor inside the Servo Drive is cut off.
CN8-5
For self-diagnosis
Within 1 ms
Normal operation
Description
L pulse
5 ms or more
Within 5 ms
8 Safety Function
Control mode
Position Speed Force
STO status
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