Omron OMNUC G5 User Manual page 359

I/O Signal Specifications
Safety Input Signal
There are 2 types of safety input circuits to operate the STO function.
Signal name
Safety input 1
Safety input 2
When the safety input is either 1 or 2, the STO function will start operating within 5 ms of the input,
and the motor output torque will be turned OFF.
Connect the equipment so that the safety input circuit is turned OFF when you operate the STO
function.
Use Stop Selection for Alarm Generation (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.
Safety input signal
Servo amplifier operation
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Pin
Symbol
number
SF+ CN8-4
• The upper arm drive signal of the
power transistor inside the driver
is cut off.
SF− CN8-3
SF2+ CN8-6 • The lower arm drive signal of the
power transistor inside the driver
is cut off.
SF2− CN8-5
For self-diagnosis
Within 1 ms
Normal operation
7-1 Safe Torque OFF (STO) Function
Description
L pulse
5 ms or more
Within 5 ms
STO status
CONTROL mode
Full
Position Speed Torque
closing
√ √ √ √
√ √ √ √
√ √ √ √
√ √ √ √
7-2
7