IDEC FS1A Controller - Manual (Page 174)

LOGIC
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●Safety input monitor outputs: Y4 to Y10
Safety input monitor outputs are used to output status of safety inputs in SafetyOne.
Intended outputs
(Terminal names) Target safety inputs
(Terminal names) Description of operation
Safety input 1 monitor output
(Y4) Safety input 1
(X0-T0, X1-T1)
Safety input 2 monitor output
(Y5) Safety input 2
(X2-T2, X3-T3)
Safety input 3 monitor output
(Y6) Safety input 3
(X4-T4, X5-T5)
Safety input 4 monitor output
(Y7) Safety input 4
(X6-T6, X7-T7)
Safety input 5 monitor output
(Y10) Safety input 5
(X10, X11)
When the target safety input is ON,
the monitor output is ON. When the
target safety input is OFF, the monitor
output is OFF.
Note. When the targeted safety input detects an input monitor error, input circuit failure, or EMC the
disturbance, corresponding safety input monitor output becomes a pulse output (1Hz). The
monitor output is OFF in other errors, Initial state, or Configuration state.
●Logic function monitor outputs: Y17 and Y20
Logic function monitor outputs are used to monitor the state of internal logic function.
Intended outputs
(Terminal names) Description of operation
Logic function monitor output 1
(Y17) When both safety input 2 and 3 are ON, the monitor output is OFF.
When either safety input 2 or 3 is OFF or ERROR is detected, the
monitor output is ON.
Logic function monitor output 2
(Y20) When both safety input 4 and 5 are ON, the monitor output is OFF.
When either safety input 4 or 5 is OFF or ERROR is detected, the
monitor output is ON.
Warning
The monitor outputs are not safety outputs. Do not use these to construct a safety system.
●Safety output monitor outputs: Y12 and Y13
Safety output monitor outputs are used to output the status of safety outputs in SafetyOne.
Intended outputs
(Terminal names) Target safety outputs
(Terminal names) Description of operation
Safety output 1 monitor output
(Y12) Safety output 1
(Y0, Y1)
Safety output 2 monitor output
(Y13) Safety output 2
(Y2, Y3)
When the target safety output is ON,
the monitor output is ON. When the
target safety output is OFF, this
function is OFF. The monitor output
turns OFF immediately independent
on set OFF-delay time.
Note. When the safety output detects an output circuit failure, the corresponding safety output monitor
output becomes a pulse output (1Hz). The monitor output is OFF in other errors, Initial state, or
Configuration state.