IDEC FS1A Controller - Manual (Page 76)

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Muting input monitor outputs： Y5 and Y7
Y5 and Y7 function as monitoring outputs that output the status of the muting signal devices
connected to the SafetyOne. When 24V DC is applied to both terminals of “X2 and X3” or “X6 and
X7”, either Y5 or Y7 are turned ON. If an input monitoring error is detected, pulses (1Hz) are
transmitted.
Y5 outputs the status of muting input 1 (X2 and X3).
Y7 outputs the status of muting input 2 (X6 and X7).
●Safety output monitor outputs: Y12 and Y13
Y12 and Y13 function as monitoring outputs that output status of the safety outputs. When the
safety outputs are OFF, the safety output monitoring output is turned OFF immediately, even if
OFF-delay timer has been set.
Y12 outputs the status of safety output 1 (Y0 and Y1). This turns ON when Y0 and Y1 are both ON.
Y13 outputs the status of safety output 2 (Y2 and Y3). This turns ON when Y2 and Y3 are both ON.
●State monitor outputs: Y14 to Y16
Y14 to Y16 are monitoring outputs for the internal status of the SafetyOne.
Y14 turns ON when in Initial or Stop state.
Y15 turns ON in Initial, Protection or Configuration state.
Y16 turns ON in Run state.
Refer to “Chapter 4 BASIC OPERATION”, or “Chapter 6 TROUBLESHOOTING”, for details of
each state.
Warning
Monitor outputs are not safety outputs. Do not use these to construct a safety system.
● Muting lamp outputs： Y17 and Y20
Y17 and Y20 are outputs to indicate that the safety functions of corresponded safety inputs are
being suspended.
Y17 turns ON when safety function of safety input 1 is suspended.
Y20 turns ON when safety function of safety input 2 is suspended.
Warning
Muting lamp outputs are not safety outputs. Do not use these to construct a safety system.
Note: In Logic 4, muting lamp output terminals (Y17 and Y20) detect that connected indicator
lights are disconnected or unconnected. If these failures are detected, the error LED displays “5”
and the state changes to the Stop state.
When not using the muting function, connect a resistor (10 kΩ, 1/4W) to these terminals.
Caution
Refer to "Chapter 2 PRODUCT SPECIFICATIONS" for specifications of each input and output.