IDEC FS1A Controller - Manual (Page 65)

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●Start inputs: X16 and X17
X16 is used to control the start of safety outputs as an “auto start” which does not use a start
switch, or “manual start” which does not detect welding of a start switch. When a start input (X16)
is turned ON (the ON state of X16 must be kept over 0.1s) while all devices connected to the
safety inputs are in the safe state, the start condition is established.
X17 is used to control the start of the safety outputs as a “control start” which detects welding of
the start switch. When the start input changes from OFF→ON→OFF (the ON state of X17 must
be maintained between to 0.1s to 5s) while all devices are connected to the safety inputs in safe
state, the start condition is established.
Note: If both of X16 and X17 are turned ON, the SafetyOne will detect an error. As the result, the
error LED displays “3” and the state changes to the Stop state. Use either X16 or X17.
●Safety outputs (with OFF-delay timer): Y0 to Y3
Y0 to Y3 function as safety outputs with the OFF-delay timer. When the timer is set to “0s”
(indication “1”), the safety outputs are shut OFF immediately.
Y0 and Y1: Safety output 1
Y2 and Y3: Safety output 2
●Safety input monitor outputs: Y4 to Y11
Y4 to Y11 function as status monitors of safety input devices connected to the SafetyOne.
Y4 and Y5: When 24V DC is applied to both terminals of “X0 and X1” or “X2 and X3”, Y4 or Y5 is
turned ON.
Y6 to Y11: When both contacts of the safety device, connected to safety output 3 to 6, are ON, the
output is ON. When the both contacts are OFF, the output is OFF.
If an input monitor error is detected, pulses (1Hz) are transmitted.
Y4 outputs the status of safety input 1 (X0 and X1).
Y5 outputs the status of safety input 2 (X2 and X3).
Y6 outputs the status of safety input 3 (X4-T4, X5-T5).
Y7 outputs the status of safety input 4 (X6-T6, X7-T7).
Y10 outputs the status of safety input 5 (X10-T10, X11-T11).
Y11 outputs the status of safety input 6 (X12-T12, X13-T13).
●Safety output monitor outputs: Y12 and Y13
Y12 and Y13 function as monitoring outputs that output the status of safety outputs. When the
safety outputs are OFF, the safety output monitor 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.