IDEC FS1A Controller User Manual

Page 143

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Short circuit and grounding detection
When an output error, such as short circuit, grounding or circuit failure, is detected, the SafetyOne
changes to the Stop state and displays "4" on the error LED display.

Note: OFF check signals are outputted at a fixed interval while the safety output is ON for

checking the OFF function of the output circuit. Refer to "Chapter 2 PRODUCT SPECIFICATION"
for details.