Signal type | Digital Input |
Safety Integrity Level (SIL) | SIL 2 |
Connection | Power Rail or terminals 14+, 15- |
Rated voltage | 20 … 30 V DC |
Ripple | ≤ 10 % |
Rated current | ≤ 50 mA |
Power dissipation | 1 W |
Power consumption | < 1.3 W |
Connection side | field side |
Connection | terminals 1+, 2+, 3- |
Rated values | acc. to EN 60947-5-6 (NAMUR) |
Open circuit voltage/short-circuit current | approx. 8 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 mA |
Pulse/Pause ratio | min. 20 ms / min. 20 ms |
Connection side | control side |
Connection | output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12 |
Output I | signal ; relay |
Output II | signal or error message ; relay |
Contact loading | 253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load |
Minimum switch current | 2 mA / 24 V DC |
Energized/De-energized delay | approx. 20 ms / approx. 20 ms |
Mechanical life | 107 switching cycles |
Switching frequency | ≤ 10 Hz |
Input/Output | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Input/power supply | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Output/power supply | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Output/Output | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Display elements | LEDs |
Control elements | DIP-switch |
Configuration | via DIP switches |
Labeling | space for labeling at the front |
Electromagnetic compatibility | NE 21:2006 |
Degree of protection | IEC 60529:2001 |
Input | EN 60947-5-6:2000 |
Ambient temperature | -20 … 60 °C (-4 … 140 °F) |
Degree of protection | IP20 |
Connection | screw terminals |
Mass | approx. 150 g |
Dimensions | 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2 |
Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 |
EU-Type Examination Certificate | PTB 00 ATEX 2080 |
Certificate | PF 08 CERT 0803 |
Input | Ex ic |
IECEx approval | IECEx PTB 11.0034 |
Pepperl+Fuchs, Switch Amplifier, Switch Amplifier
Pepperl+Fuchs KFD2-SR2-Ex1.W.LB Switch Amplifier
- 1-channel isolated barrier
- 24 V DC supply (Power Rail)
- Dry contact or NAMUR inputs
- Usable as signal splitter (1 input and 2 outputs)
- Relay contact output
- Fault relay contact output
- Line fault detection (LFD)
- Reversible mode of operation
- Up to SIL 2 acc. to IEC 61508/IEC 61511
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