德國倍加福KCD2-ST-EX2開關(guān)量安全柵

特征

• 雙通道
• 24v直流電源(導(dǎo)軌供電)
• 干接觸或NAMUR輸入
• 2有源晶體管輸出
• 可逆工作方式
• 線路故障檢測(LFD)
• 外殼寬度12.5 mm
• 根據(jù)IEC 61508，安全等級可達直到SIL2

應(yīng)用

    這種隔離屏障用于內(nèi)在安全應(yīng)用。該設(shè)備傳輸數(shù)字信號(NAMUR傳感器或dry)從危險區(qū)域到安全區(qū)域。每個輸入控制一個有源晶體管輸出。通過開關(guān)，操作方式可以倒轉(zhuǎn)線路故障檢測可關(guān)閉。故障由led acc進行信號處理。NAMUR NE44和a單獨的集體錯誤消息輸出。

接線圖

技術(shù)參數(shù)

General specifications
Signal type Digital Input
Functional safety related parameters
Safety Integrity Level (SIL) SIL 2
Supply
Connection Power Rail or terminals 9+, 10-
Rated voltage Ur 19 ... 30 V DC
Ripple ≤ 10 %
Rated current Ir 30 ... 20 mA + Iout
Power dissipation ≤ 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 ≤ 0.1 mA , short-circuit I ≥ 6.5 mA
Pulse/Pause ratio ≥ 100 μs / ≥ 100 μs
Output
Connection side control side
Connection terminals 5, 6
Rated voltage Un 30 V DC
Rated current In 50 mA
Response time ≤ 200 μs
Signal level 1-signal: (supply voltage) - 3 V max. for 50 mA
0-signal: blocked output (off-state current ≤ 10 μA)
Output I signal ; Transistor
Output II signal ; Transistor
Collective error message Power Rail
Transfer characteristics
Switching frequency ≤ 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+