ABB FPTC-02 - Wiring Example 1

￭ Wiring example 1
This connection is SIL2 capable (redundancy between STO channels).
11
12
21
22
XSTO1
PTC
XSTO
T1 T2
XFLT
FPTC
OUT
SGND
IN1
IN2
SLOT
1/2/3
X100
XSTO2
3 ~
Ex M
a)
1
2
Control unit1
Potentially explosive atmosphere2
a) If necessary, you can connect an external device (for example, an
emergency stop button) between the XSTO input of the control unit
and the XSTO1 and XSTO2 outputs of the FPTC module. See Wiring
example 3 (page 45).
Electrical installation 43