Omron OMNUC G5 R88D-KN series, Руководство пользователя

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7-2
7-1 Safe Torque OFF (STO) Function
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
7
Safety Function
I/O Signal Specifications
Safety Input Signal
There are 2 types of safety input circuits to operate the STO function.

When the safety input is either 1 or 2, the STO function starts operating within 5 ms of the input,
and the motor output torque will be reduced to 0.

Connect the equipment so that the safety input circuit is turned OFF when you operate the STO
function.

Use Stop Selection for Alarm Detection (Pn510) to set the operation when the safety input is
turned OFF.
Precautions for Correct Use
 L-pulse for self-diagnosis of safety equipment
When you are connecting a safety equipment, such as a Safety Controller or a safety sensor, the
safety output signal of the equipment may include L pulse for self-diagnosis. To avoid malfunction
due to this L-pulse for self-diagnosis, a filter that can remove the L pulse for self-diagnosis is built in
with 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.
Signal name Symbol
Pin
number
Description
CONTROL mode
Position Speed Torque
Full
closing
Safety input 1
SF

CN8-4 • The upper arm drive signal of the
power transistor inside the Servo
Drive is cut off.
   
SF

CN8-3
   
Safety input 2
SF2

CN8-6 • The lower arm drive signal of the
power transistor inside the Servo
Drive is cut off.
   
SF2

CN8-5
   
For self-diagnosis L pulse
Within 1 ms
Within 5 ms
Normal operation
STO status
Safety input signal
Servo amplifier operation
5 ms or more