Transformer Isolated Barriers KFD2-SRA-Ex* Output: Relay Input EEx ia IIC Input II + - Control circuit EEx ia IIC 24 V DC nominal supply voltage Reversible mode of operation Lead monitoring (short circuit LK and interruption LB) with LED indicator (red flashing), switching output and signal on Power Rail • 50 % less wiring 2 : 1 • 2 relay outputs, 1 NO contact per channel, grouped into single-pole pairs • EMC acc. to NAMUR NE 21 + KFD2-SRA-Ex 4 + - + Switch S2 in position I 6 - R1 R2 1 + 4 - R1 R2 + 4 3- 4- 5+ 3- 4- 5+ + R1 R2 3 - R1 R2 Resistor for LB and SC: R1 = 400 Ω ≤ R ≤ 2 kΩ R2 = 10 kΩ 6 Switch S2 in position II 1- 2+ 1- 2+ 2+ LB SC yellow S2 S6 II 5+ S1 LB SC S2 red I II I S5 66- yellow red I II 4-channel - 3 - • • • • 2:1 Mode + 1 IV Hazardous area - only KFD2-SRA-Ex4 III II S1 I S4 KFD2-SRA-Ex4 S3 + - 2-channel 1 Safe area Input I KFD2-SRA-Ex 2 KFD2-SRA-Ex2 + Function The transformer isolated barrier transfers digital signals from the hazardous area. The inputs are designed for the connection of NAMUR sensors per DIN EN 60947-5-6 or a mechanical contact. The input, output and power supply are galvanically isolated from each other. The relay output and the power supply are galvanically isolated from each other per DIN EN 50178 with a design isolation voltage of AC 50 V. 7 8 9 Output I Output II 10 11 12 Output III Output IV - 14+ 15- Power Power LB-collective supply rail error message Aufbau Application Ausgabedatum 28.2.01 Min/Max manometer, valve positioners, magnetic immersion probes with 2 switch points. Two signals can be monitored through one dual lead in the 2:1 mode of operation (AC), reducing wiring by fifty percent. Subject to reasonable modifications due to technical advances. 1 Copyright Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com KFD2-SRA-Ex* Technische Daten KFD2-SRA-Ex4 Power supply Connection type Rated operational voltage Ue Power Rail or terminals 14+, 1520 ... 30 V DC Safety maximum voltage Um 40 V DC Ripple Rated operational current Power loss Input (intrinsically safe) Connection type Nominal data ≤ 10 % 45 ... 70 mA approx. 1.26 W Input pulse length/Input pulse interval Lead monitoring Details of certificate of conformity Certification number Group, category, ignition protection method Voltage Uo 14 mA Power Po 35 mW (linear characteristic) Output I and II Output I up to IV Contact loading Mechanical life output I: terminals 7, 8; output II: terminals 8, output I: terminals 7, 8; output II: terminals 8, 9 9; output III: terminals 10, 11; output IV: terminals 11, 12 Signal I/II; relay Signal I ... Signal IV; relay 253 V AC / 2 A / cos ϕ > 0.7; 40 V DC / 253 V AC / 2 A / cos ϕ > 0.7; 40 V DC / 1 A resistive load 1 A resistive load 5 x 106 switchings approx. 20 ms / approx. 20 ms Power Rail ≤ 10 Hz (non-AC operation) ≤ 3 Hz (AC operation) safe galvanic isolation acc. to EN 50020, voltage peak value 375 V safe galvanic isolation acc. to EN 50020, voltage peak value 375 V safe isolation acc. to DIN VDE 0106, design isolation voltage 253 Veff Input/Power supply Output/Power supply Ambient conditions Ambient temperature Standard conformity Input safe galvanic isolation acc. to EN 50020, voltage peak value 375 V safe galvanic isolation acc. to EN 50020, voltage peak value 375 V basic isolation acc. to EN 50178, design isolation voltage 50 Veff AC -20 ... 60 °C (253 ... 333 K) in accordance with IEC 60947-5-6 (NAMUR, DIN 19234); see system description for electrical data accord. to DIN EN 50178 accord. to DIN EN 50178 accord. to DIN IEC 721 accord. to EN 50081-2 / EN 50082-2 Coordination of insulation Galvanic isolation Climatic conditions Electromagnetic compatibility Mechanical specifications Mass 28.2.01 IIC 3 µF 180 mH 5 x 106 switchings approx. 20 ms / approx. 20 ms Power Rail Energized/De-energized delay Collective error message Transfer characteristics Switching frequency Galvanic isolation Input/Output terminals 1-, 2+, 3in accordance with IEC 60947-5-6 (NAMUR, DIN 19234); see system description for electrical data ≥ 20 ms /≥ 20 ms breakage J ≤ 0.15 mA ZELM 99 ATEX 0009 ¬ II (1) G [EEx ia] IIC 10 V Current Io Allowable circuit values Ignition protection class, category [EEx ia] Explosion group External capacitance External inductance Output (not intrinsically safe) Connection type Ausgabedatum terminals 1-, 2+, 3-; 4-, 5+, 6in accordance with IEC 60947-5-6 (NAMUR, DIN 19234); see system description for electrical data ≥ 20 ms /≥ 20 ms breakage J ≤ 0.15 mA KFD2-SRA-Ex2 approx. 150 g Notes Accessories Power Rail UPR-05 Power feed module 24 V DC KFD2-EB ... Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com 2 KFD2-SRA-Ex* Lead breakage monitoring In the case of an error a fault signal is activated across the Power Rail (UPR-05). The power feed module evaluates and passes on the fault signal by means of a potentially free contact (see system description). Mode of operation with 2:1 transfer method The transformer isolated barrier transfers binary signals from the hazardous area by means of the patented new 2:1-transfer method which allows for the transmission of two independent binary signals by means of a single pair of conductors. This allows wiring to be reduced by 50 %. The 2:1 transfer method is well suited for the transmission of 2 signals that are within close proximity such as Min-Max-manometers, valve positioners and magnetic immersion probes with two switch points. Conditions When using sensors they have to be provided with a reverse polarity protected diode. Pepperl+Fuchs offers suitable sensors for alternating polarity (see table). When using mechanical contacts in the 2:1 mode, the blocking diode must be connected near the switch. Connection of: Sensors Mechanical switches - 1 4 + - + - + Refer to the connection diagrams for lead breakage and short circuit monitoring. + 3 6 3 6 1 4 Comments: When installing a serial diode, it must be assured that the reverse polarity current is < 0.15 mA, in order to enable the lead monitoring. For all types NJ, RC/RJ and SJ an adjustment by means of a serial diode is necessary. Mode of operation without 2:1 transfer method Set switch S2 to position II. Functioning switch Switch Position Function S1 I Lead breakage monitoring on II Lead breakage monitoring off S2 I AC-mode (2:1 transfer method) II not an AC-mode S3 I Reverse mode of operation output IV inactive II Reverse mode of operation output IV active S4 I Reverse mode of operation output III inactive II Reverse mode of operation output III active S5 I Reverse mode of operation output II inactive II Reverse mode of operation output II active S6 I Reverse mode of operation output I inactive II Reverse mode of operation output I active Pepperl+Fuchs sensors for alternating polarity no no no no no no no yes yes yes yes yes yes yes yes yes yes yes yes yes Operating temperature Tu /°C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C Subject to reasonable modifications due to technical advances. 3 Model number NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ NJ 2-12GM-N (-V1) 4-12GK-N 4-12GK-SN 4-12GM-N (-V1) 4-30GM-N-200 5-10-11-N 5-11-N 5-11-N-G 5-18GK-N 5-18GK-N-150 5-18GK-SN 3-18GK-S1N 5-18GM-N (-V1) 8-18GK-N 8-18GK-N-150 8-18GK-SN 8-18GM-N (-V1) 6-22-N 6-22-N-G 6-22-SN External diode necessary yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes Operating temperature Tu /°C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C Copyright Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com 28.2.01 Cylindrical proximity switch NCB1,5-6,5M25-N0 (V1) NCB1,5-8GM25-N0 (V1) NCB2-12GM35-N0 (V1) NCNCB5-18GM40-N0 (-V1) NCN8-18GM40-N0 (-V1) NCB10-30GM40-N0 (-V1) NCN15-30GM40-N0 (-V1) NJ 0,2-10GM-N NJ 0,8-4,5-N NJ 0,8-5GM-N NJ 1,5-18GM-N-D (-V1) NJ 1,5-6,5-N NJ 1,5-8GM-N (-V1) NJ 2-11-N NJ 2-11-N-G NJ 2-11-SN NJ 2-11-SN-G NJ 2-12GK-N NJ 2-12GK-SN External diode necessary Ausgabedatum Model number KFD2-SRA-Ex* Model number Operating temperature Tu /°C yes yes yes yes yes yes yes yes yes yes yes yes yes yes -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C no no no no no no no no no no no no yes no yes yes yes yes yes yes yes yes yes yes yes yes yes -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 70 °C -25 °C ... 100 °C -25 °C ... 70 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C -25 °C ... 100 °C Model number NJ 20+U1+N NJ 20S+U1+N NJ 30+U1+N NJ 30P+U1+1N NJ 40+U1+N NJ 6S1+U1+N1 FJ 6-110-N FJ 7-N Sensors on carrier circuit boards PL1-F25-N4-... PL2-F25-N4-... PL3-F25-N4-... PL4-F25-N4-... Ring type proximity switches RJ 10-14-N RJ 10-N RJ 15-14-N RJ 15-N RJ 21-N RJ 43-N Slot type proximity switches SC2-N0 SC3,5-G-N0 SC3,5-N0 SC3,5-SN SC3,5-S1N SJ 2,2-N SJ 2-N SJ 2-S1N SJ 2-SN SJ 3,5-G-N SJ 3,5-H SJ 3,5-N SJ 3,5-N LED SJ 3,5-S1N SJ 3,5-SN SJ 5-G-N SJ 5-K-N SJ 5-N SJ 10-N SJ 15-N External diode necessary Operating temperature Tu /°C yes yes yes yes yes yes yes yes -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C no no no no -25 °C -25 °C -25 °C -25 °C ... 70 °C ... 70 °C ... 70 °C ... 70 °C yes yes yes yes yes yes -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C no yes no yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C -25 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C ... 100 °C Ausgabedatum 28.2.01 NJ 6-22-SN-GNJ 10-22-N NJ 10-22-N-G NJ 10-30GK-N NJ 5-30GK-S1N NJ 10-30GKK-N NJ 10-30GM-N (-V1) NJ 10-30GK-SN NJ 15-30GK-N NJ 15-30GK-N-150 NJ 15-30GK-SN NJ 15-30GKK-N NJ 15-30GM-N NJ 20-40-N NJ 25-50-N Rectangular type proximity switch NCB2-F1-N0 NCN4-M3K-N4 NCN15-M1K-N0 NCB15+U1+N0 NCN20+U1+N0 NCN30+U1+N0 NCN40+U1+N0 NCN3-F24L-N4 NCN3-F24R-N4 NCN3-F25-N4 (-...) NCN3-F25-SN4 (-...) NCN3-F25F-N4-V1 NCN3-F36-N4 NCN3-F31-N4-... NJ 0,8-F-N NJ 1,5-F-N NJ 2,5-F-N NJ 2-F1-N NJ 2-V3-N NJ 2-V3-N-V5 NJ 4-F-N NJ 6-F-N NJ 10-F-N NJ 15-M1-N (-V) NJ 15-M1K-N NJ 15+U1+N NJ 15S+U1+N External diode necessary Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com 4