Intrinsic Safety Barriers Isolated Barrier KFD2-ST3-Ex2

Signal type

Digital Input

Functional safety related parameters

Safety Integrity Level (SIL)

SIL 2

Systematic capability (SC)

SC 3

Supply

Connection

Power Rail or terminals 14+, 15-

Rated voltage

19 ... 30 V DC

Ripple

≤ 10 %

Rated current

20 ... 15 mA + I_out

Power dissipation

≤ 900 mW including maximum power dissipation in the output

Input

Connection side

field side

Connection

terminals 1+, 2+, 3-; 4+, 5+, 6-

Rated values

acc. to EN 60947-5-6 (NAMUR)

Open circuit voltage/short-circuit current

approx. 10 V DC / approx. 8 mA

Switching point/switching hysteresis

1.2 ... 2.1 mA / approx. 0.2 mA

Line fault detection

breakage I ≤ 0.1 mA , short-circuit I ≥ 6.5 mA

Pulse/Pause ratio

min. 100 µs / min. 100 µs

Output

Connection side

control side

Connection

output I: terminal 7+ ; output II: terminal 9+

Rated voltage

30 V DC

Rated current

100 mA

Response time

≤ 200 µs

Signal level

1-signal: (supply voltage) - 3 V max. for 100 mA
0-signal: blocked output (off-state current ≤ 10 µA)

Output I

signal ; Transistor

Output II

signal ; Transistor

Collective error message

Power Rail

Transfer characteristics

Switching frequency

≤ 5 kHz