IDEC FS1A Controller - Manual (Page 75)

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●External device monitor inputs： X14 and X15 (T14 and T15)
X14 and X15 (T14 and T15) function as external device monitor inputs.
X14 and T14 are used as contact monitors for external devices connected to Y0 and Y1.
X15 and T15 are used as contact monitors for external devices connected to Y2 and Y3.
Warning
Safety check signals (pulses signals) are transmitted from the drive terminals (T14,T15) to
diagnose external devices and monitor circuits. The safety check signal can not be used as power
for connected devices.
Note: If there are unused safety outputs, short between external device monitor terminals (Xn)
corresponding to the unused safety outputs and the drive terminals (Tn). If they are not shorted,
the SafetyOne detects an input monitor error. As the result, an error LED displays “1” and the
state changes to the Protection state.
●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 “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 turned on for more than 0.1s) all devices
connected to the safety inputs are in the safe state, and 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 turned on between 0.1s to 5s) all devices connected to the safety inputs are in the safe state,
and the start condition is established.
Note: If both of X16 and X17 are turned ON at the same time, the SafetyOne will detect an error.
As a result, the error LED displays “3” and the state changes to the Stop state. Use either X16 or
X17, but not both.
●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, Y6, Y10 and Y11
Y4, Y6, and Y10 to Y11 function as status monitoring of safety input devices connected to the
SafetyOne.
Y4 and Y6: When 24V DC is applied to both terminals of “X0 and X1” or “X4 and X5”, Y4 or Y6 are
turned ON.
Y10 and Y11: When the both contacts of the safety device connected to safety output 5 and 6 are
ON, the output is ON. When the both contacts are OFF, the output is OFF.
If an input monitoring error is detected, pulses (1Hz) are transmitted.
Y4 outputs the status of safety input 1 (X0 and X1).
Y6 outputs the status of safety input 3 (X4 and X5).
Y10 outputs the status of safety input 5 (X10-T10, X11-T11).
Y11 outputs the status of safety input 6 (X12-T12, X13-T13).