Pepperl+Fuches KCD2-ST-Ex2 Switch Amplifier, 2-channel isolated barrier, 24 V DC supply (Power Rail), dry contact or NAMUR inputs.
This isolated barrier is used for intrinsic safety applications.
The device transfers digital signals (NAMUR sensors or dry contacts) from a hazardous area to a safe area.
Each input controls an active transistor output.
Via switches the mode of operation can be reversed and the line fault detection can be switched off.
A fault is signalized by LEDs acc. to NAMUR NE44 and a separate collective error message output.
Technical Data
General specifications
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 9+, 10-
Rated voltage Ur 19 ... 30 V DC
Ripple ā¤ 10 %
Rated current Ir 30 ... 20 mA + Iout
Power dissipation ā¤ 800 mW including maximum power dissipation in the output
Input
Connection side field side
Connection terminals 1+, 2-; 3+, 4-
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 ā¤ 0.1 mA , short-circuit I ā„ 6.5 mA
Pulse/Pause ratio min. 100 Āµs / min. 100 Āµs
Output
Connection side control side
Connection terminals 5, 6
Rated voltage Ur 30 V DC
Rated current Ir 50 mA
Response time ā¤ 200 Āµs
Signal level 1-signal: (supply voltage) - 3 V max. for 50 mA
0-signal: blocked output (off-state current ā¤ 10 ĀµA)
Output I signal ; Transistor
Output II signal ; Transistor
Collective error message Power Rail
Transfer characteristics
Switching frequency ā¤ 5 kHz
Galvanic isolation
Input/Output reinforced insulation acc. to EN 50178, rated insulation voltage 300 Veff
Input/power supply reinforced insulation acc. to EN 50178, rated insulation voltage 300 Veff
Output/power supply not available , common pole terminal 9+
Output/Output not available , common pole terminal 9+
Indicators/settings
Display elements LEDs
Control elements DIP switch
Configuration via DIP switches
Labeling space for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EU EN 61326-1:2013 (industrial locations)
Conformity
Electromagnetic compatibility NE 21:2011
Degree of protection IEC 60529:2001
Protection against electrical shock IEC 61010-1:2010
Input EN 60947-5-6:2000
Ambient conditions
Ambient temperature -20 ... 60 Ā°C (-4 ... 140 Ā°F)
extended ambient temperature range up to 70 Ā°C (158 Ā°F), refer to manual for
necessary mounting conditions
Mechanical specifications
Degree of protection IP20
Connection screw terminals
Mass approx. 100 g
Dimensions 12.5 x 119 x 114 mm (0.5 x 4.7 x 4.5 inch) (W x H x D) , housing type A2
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate BASEEFA 13 ATEX 0080
Marking 1 II (1)G [Ex ia Ga] IIC
1 II (1)D [Ex ia Da] IIIC
1 I (M1) [Ex ia Ma] I
Input Ex ia
Voltage Uo 10.5 V
Current Io 17.1 mA
Power Po 45 mW (linear characteristic)
Supply
Maximum safe voltage Um 253 V AC (Attention! Um is no rated voltage.)
Output
Maximum safe voltage Um 253 V AC (Attention! The rated voltage can be lower.)
Certificate CML 19 ATEX 4410 X
Marking 1 II 3G Ex ec IIC T4 Gc
Galvanic isolation
Input/Output safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supply safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
Directive 2014/34/EU EN IEC 60079-0:2018 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012
International approvals
UL approval
Control drawing 116-0374 (cULus)
IECEx approval
IECEx certificate IECEx BAS 13.0046
IECEx CML 19.0147X
IECEx marking [Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I
Ex ec IIC T4 Gc
