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倍加福KFD2-STC4-EX2安全柵特征

?2通道隔離屏障

?24v直流電源(電源線)

?輸入2線智能發射器

?輸出0/4 mA…20mA

?帶有測試點的終端

?根據IEC 61508，安全等級可達SIL2 

應用

這種隔離屏障用于內在安全應用。該設備在a危險區域。它將模擬輸入信號以an的形式傳輸到安全區域孤立的當前值。的輸入信號上可以疊加數字信號危險或安全區域，并雙向轉移。如果環路中的HART通信電阻過低，終端之間的內部阻力250Ω8、9可以用11 12。測試HART通信器連接的套接字為集成到設備的終端。

該設備支持以下智能協議:

技術參數

General specifications
Signal type Analog input
Supply
Connection Power Rail or terminals 14+, 15-
Rated voltage Un 20 ... 35 V DC
Ripple within the supply tolerance
Power loss 1.8 W
Power consumption ≤ 2.7 W
Input
Connection terminals 1+, 3-; 4+, 6-
Input signal 0/4 ... 20 mA
Available voltage ≥ 16 V at 20 mA, terminals 1+, 3
Output
Connection terminals 7-, 8+; 10-, 11+
Load 0 ... 550 Ω
Output signal 0/4 ... 20 mA (overload > 25 mA)
Ripple ≤ 50 μA rms
Transfer characteristics
Deviation at 20 °C (68 °F), 0/4 ... 20 mA
≤ 10 μA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage
Influence of ambient temperature 0.25 μA/K
Frequency range field side into the control side: band width with 1 Vpp signal 0 ... 7.5 kHz (-3 dB)
safe area to hazardous area: band width with 1 VSS signal 0.3 ... 7.5 kHz (-3 dB)
Settling time 200 μs
Rise time/fall time 20 μs
Electrical isolation
Output/power supply functional insulation, rated insulation voltage 50 V AC
Output/Output functional insulation, rated insulation voltage 50 V AC
Directive conformity
Electromagnetic compatibility
Directive 2004/108/EC EN 61326-1:2006
Conformity
Electromagnetic compatibility NE 21:2011
Degree of protection IEC 60529:2001
Protection against electrical shock UL 61010-1:2012
Ambient conditions
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection IP20
Mass approx. 150 g
Dimensions 20 x 124 x 115 mm (0.8 x 4.9 x 4.5 in) , housing type B2
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection
with Ex-areas
EC-Type Examination Certificate BAS 99 ATEX 7025 , for additional certificates see www.pepperl-fuchs.com
Group, category, type of protection ? II (1)G [Ex ia Ga] IIC , ? II (1)D [Ex ia Da] IIIC , ? I (M1) [Ex ia Ma] I
Input [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Voltage Uo 25.2 V
Current Io 93 mA
Power Po 0.586 W
Supply
Maximum safe voltage Um 250 V (Attention! The rated voltage can be lower.)