IDEC FS1A Controller - Manual (Page 105)

LOGIC
5-57
Chapter 5
●Muting inputs: X2, X3, X6, and X7
Muting inputs are used to diagnose the status of muting devices, such as sensors or limit switches.
Intended inputs
(Terminal names) Target safety
inputs
(Terminal
names) Function
Muting input 1
(X2, X3) Safety input 1
(X0, X1) Function name Muting input+Muting II
Muting input 2
(X6, X7) Safety input 2
(X4, X5) Symbol
Muting input
+
Muting
function Ⅱ
Safety
input
Muting （ ∞ ）
Description of
operation
This function diagnoses the status of connected
muting devices. This function diagnoses the time
interval of status transition between each input of
duplicated inputs (3s). The function does not use
a drive terminal (T2, T3, T6, T7).
Detail
information Logic functions (5-323, 329)
Warning
Muting inputs are not safety inputs. Do not use these to construct a safety system.
The maximum time to suspend the safety function continuously (muting monitor time) is not specified
in the SafetyOne. Based on risk assessment, monitor the muting monitor time that is suitable for the
safety system, by external circuit or devices.