二苯基甲烷二異氰酸酯：MDI;Diphenyl-methane-diisocyanate?分子式?C15H10N2O2。二苯甲烷二異氰酸酯簡稱MDI。有4，4-MDI、2，4-MDI、2，2-MDI等異構體，應用最多的是4，4-MDI。白色至淡黃色熔觸固體，加熱時有刺激性臭味。相對密度(50?℃/4℃)1.19，熔點40～41℃，沸點200℃或者156～158℃
KFD2-CRG2-EX1.D
KFD2-CRG2-EX1.D
參數表節選的技術參數 KFD2-SR2-Ex2.W
General specifications
Signal typeDigital Input
Functional safety related parameters
Safety Integrity Level SILSIL 2
Supply
ConnectionPower Rail or terminals 14+, 15-
Rated voltage19 ... 30 V DC
Ripple≤ 10 %
Rated current≤ 50 mA
Power dissipation≤ 1 W
Power consumption≤ 1 W
Input
Connection sidefield side
Connectionterminals 1+, 2+, 3-; 4+, 5+, 6-
Rated valuesacc. to EN 60947-5-6 NAMUR
Open circuit voltage/short-circuit currentapprox. 8 V DC / approx. 8 mA
Switching point/switching hysteresis1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detectionbreakage I ≤ 0.1 mA , short-circuit I > 6 mA
Pulse/Pause ratiomin. 20 ms / min. 20 ms
Output
Connection sidecontrol side
Connectionoutput I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12
Output I, IIsignal, relay
Contact loading250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 40 V DC/2 A resistive load
Minimum switch current2 mA / 24 V DC
Energized/De-energized delayapprox. 20 ms / approx. 20 ms
Mechanical life107 switching cycles
Collective error messagePower Rail
Transfer characteristics
Switching frequency≤ 10 Hz
Galvanic isolation
Input/Outputreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/Outputreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Indicators/settings
Display elementsLEDs
Control elementsDIP switch
Configurationvia DIP switches
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 industrial locations
Low voltage
Directive 2014/35/EUEN 61010-1:2010+A1:2019+A1:2019/AC:2019
Conformity
Electromagnetic compatibilityNE 21:2017 , EN 61326-3-1:2017 , EN IEC 61326-3-2:2018
Degree of protectionIEC 60529:1989+A1:1999+A2:2013
Functional safetyIEC/EN 61508:2010
InputEN 60947-5-6:2000
Ambient conditions
Ambient temperature-20 ... 70 °C -4 ... 158 °F
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 150 g
Dimensions20 x 119 x 115 mm 0.8 x 4.7 x 4.5 inch W x H x D , housing type B2
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
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