IDEC FS1A Controller - Manual (Page 171)

LOGIC
5-123
Chapter 5
Warning
For connected control devices, refer to “SAFETY PRECAUTIONS”.
Safety check signals (pulses signals) are sent from the drive terminals (T0 to T7) to diagnose
connected safety devices and input circuits. Safety check signals can not be used as a power supply
for connected devices.
Note. Solid state outputs, such as safety light curtains, can not be connected to safety input 1 through
safety input 4.
Note. Use safety input 1 through safety input 4 as specified combinations, such as receive terminal
(Xn) and drive terminal (Tn). If the combinations are incorrect, SafetyOne does not work
correctly.
Note. If there are unused safety inputs in safety input 1 through safety input 4, connect the unused
receive terminals (Xn) to the corresponding drive terminals (Tn). If they are not connected, the
SafetyOne does not turn ON the safety outputs.
Note. If safety input 5 is not used, connect the receive terminal (X10 and X11) to a 24V DC power
supply (V+). If they are not connected, the SafetyOne does not turn ON the safety outputs.
●External device monitor inputs: X14 and X15 (T14 and T15)
External device monitor inputs are used to diagnose the status of devices connected to safety outputs.
Intended inputs
(Terminal names) Target safety
outputs
(Terminal
names) Function
External device monitor input 1
(X14-T14)
Safety output 1
(Y0, Y1) Function name External device monitor input
External device monitor input 2
(X15-T15)
Safety output 2
(Y2, Y3) Symbol
External Device
Monitor
EDM
Description of
operation
This function diagnoses the
status of devices connected to a
target safety output.
Detail information Logic functions (5-326)
Warning
Safety check signals (pulses signals) are sent from the drive terminals (T14, T15) to diagnose external
devices and monitor circuits. Safety check signals can not be used as a power supply for connected
devices.
Note. If there are unused safety outputs, connect the intended external device monitor terminals (Xn)
to the corresponding drive terminals (Tn). If they are not connected, the SafetyOne detects an
input monitor error. As the result, the error LED displays a “1” and the unit changes to the
Protection state.