1. General Introduction
The proximity sensor or switch controls a form C changeover relay contact for the safe area load. The normal output state can be reversed using switches S1 and S2. Switch S3 is used to enable or disable line fault detection of the field circuit.During an error condition, the relays revert to their deenergized state and the LEDs indicate the fault according to NAMUR NE44.
2. General Specification for KFA6-SR2-Ex2.W
Model | KFA6-SR2-Ex2.W |
General specifications | |
Signal type | Digital Input |
Functional safety related parameters | |
Safety Integrity Level (SIL) | SIL 2 |
Supply | |
Connection | terminals 14, 15 |
Rated voltage Ur | 207 ... 253 V AC, 45 ... 65 Hz |
Power dissipation | 1.2 W |
Power consumption | ≤1.3 W |
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. 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 | ≥20 ms / ≥20 ms |
Output | |
Connection side | control side |
Connection | output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12 |
Output I, II | signal ; relay |
Contact loading | 253 V AC/2 A/cos > 0.7; 126.5 V AC/4 A/cos > 0.7; 40 V DC/2 A resistive load |
Energized/De-energized delay | approx. 20 ms / approx. 20 ms |
Mechanical life | 107 switching cycles |
Transfer characteristics | |
Switching frequency | ≤10 Hz |
Galvanic isolation | |
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 |
Indicators/settings | |
Display elements | LEDs |
Labeling | space for labeling at the front |
Directive conformity | |
Electromagnetic compatibility | EN 61326-1:2013 (industrial locations) |
Directive 2014/30/EU | |
Low voltage | EN 61010-1:2010 |
Directive 2014/35/EU | |
Conformity | |
Electromagnetic compatibility | NE 21:2006 |
Degree of protection | IEC 60529:2001 |
Input | EN 60947-5-6:2000 |
Ambient conditions | |
Ambient temperature | -20 ... 60 °C (-4 ... 140 °F) |
Mechanical specifications | |
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 |
3. Connection
4. Configuration
