IDEC FS1A Controller - Manual (Page 85)

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●Start inputs: X16 and X17
X16 is used to control the start of the safety outputs as an “auto start” which does not use a start
switch, or a “manual start” which does not detect welding of the start switch. When the start input
(X16) is turned ON (the ON state of X16 must be on longer than 0.1s) all devices connected to the
safety inputs are in 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 must be kept
on from 0.1s to 5s) all devices connected to the safety inputs are 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 only either X16 or X17, but not
both at the same time.
●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 shut OFF immediately.
Y0 and Y1: Safety output 1
Y2 and Y3: Safety output 2
●Safety input monitor outputs: Y4 to Y11
Y4 toY11 function as status monitors of safety input devices connected to the SafetyOne.
When the both contacts of the safety device are ON, the output is ON; when 1 or more contacts
are OFF, the output is OFF.
If input monitoring errors are detected, pulses (1Hz) are transmitted.
Y4 outputs the status of safety input 1 (X0-T0, X1-T1).
Y5 outputs the status of safety input 2 (X2-T2, X3-T3).
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 the safety outputs. When the
safety outputs are OFF, the monitor output turns OFF immediately, even if the 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.