5-92
Error detection function
Input monitoring
When an error is detected at the inputs, the SG-ONE changes to the Protection state and displays
"1" on the error LED display. The condition to be detected as input error is shown below.
(1) When input monitoring error detection time (0.5s) is exceeded while both of the 2 input
conditions are ON.
The input LEDs blink and the monitor output (Y
m
) outputs pulses (1Hz), to notify the operator of
the corresponding input. See Fig. 5-10.
Short circuit detection
When an input error, such as a short circuit, or a circuit failure, is detected, the SG-ONE changes
to the Stop state and display "2" on the error LED display.
Noise detection filter
When the SG-ONE is used in an environment with severe noise, the SG-ONE changes to the
Stop state and displays "9" on the error LED display.
Warning
Safety check signals (pulses signals) are supplied from the drive circuits (T
n
) to diagnose
connected safety devices and input circuits. Safety check signals can not be used as power for
connected devices.
Note: Drive circuit “T
n+1
” is always OFF.
Summary of Contents for SG EASY One
Page 1: ...Safety Control Unit INSTRUCTION MANUAL...
Page 34: ......
Page 70: ...5 28 Using an DATALOGIC AUTOMATION light curtain SE series as S1 S2...
Page 71: ...5 29 Timing chart Logic 3...
Page 74: ...5 32 Logic circuit Logic 4...
Page 80: ...5 38 Timing chart Logic 4...
Page 81: ...5 39...
