IDEC FS1A Controller - Manual (Page 51)

LOGIC
5-3
Chapter 5
Safety performance on each wiring of inputs and outputs
Applicable safety performance of SafetyOne depends on wiring of the inputs and outputs.
Wiring examples and achivable safety performances are shown below.
• Wiring example of dual channel safety inputs
Dual Channel Safety
X0
X1
T0
T1
24V DC Safety light curtain
SafetyOne
Control category 4
MTTF
ｄ
100 years
DC high
PL e
24V
0V
OSSD1
OSSD2
0V DC
Dual Channel Safety
X0
X1
T0
T1
Emergency stop switch
SafetyOne
Control category 3
MTTF
ｄ
100 years
DC Medium
PL d
24V DC
Note：
To avoid short circuit between each cable,
-Fix the cables permanently and protect against external
damage, e.g. by cable ducting, conduit.....
or
-Use individually shielded cables with earth connection.
Dual Channel Safety
X0
X1
T0
T1
Emergency stop switch
SafetyOne
Control category 1
MTTF
ｄ
100 years
DC None
PL ｃ
24V DC