IDEC FS1A Controller - Manual (Page 141)

5-100
Output function
Safety output with timer
This function is for controlling the safety output.
As shown in Fig. 5-28, this function is comprised of a hold input (O
n
), an EDM input (I
n
), and a
safety output (Y
n
). The output of this external device monitoring input is connected to the EDM
input (I
n
).
Fig. 5-28 Safety output with timer circuit
Connects to
Equipment with force guided mechanisms, such as, contactors, safety relays.
Input of safety PLC, or another SafetyOne controller
Description of operation
The operation timing is described in Fig. 5-29 and 5-30.
Ⅰ When hold input is turned ON, the safety output is turned ON after confirmation that the EDM
input is ON.
Ⅱ When hold input is turned OFF, the safety output is turned OFF.
Ⅲ When the OFF-delay timer is set, after the hold input is turned OFF, the safety output is
turned OFF after the set time of the OFF-delay timer. However, the monitor outputs (Y12
and Y13) for safety output are turned OFF immediately after the hold input is turned OFF
regardless of the set time of the OFF-delay timer.
Ⅳ If the EDM input is not applied correctly (ON state of EDM input is detected during EDM
monitoring time (1s) after hold input is turned ON) due to an error in the safety device or input
circuit, the SafetyOne changes to the Protection state, and indicates “1” on the error LED
without turning ON the safety output. (See Fig. 5-30.)
O
n
I
n
Y
ｎ
V-
Ex. Contactor, safety relay Hold
EDM
OSSD
with
Off delay