HITACHI LPA302A輸入輸出模塊
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電隔離是的，過(guò)電壓類別II額定絕緣電壓50 V絕緣測(cè)試電壓500 V a.c.1分鐘標(biāo)稱電壓24 V電壓限值（UL=邏輯0，UH=邏輯1）-30 V<UL<5 V 15 V<UH<30 V標(biāo)稱電流12 mA電流限值-22 mA<IL<2 mA 6 mA<IH<18 mA輸入阻抗1.8 kOhm高完整性控制器能夠使用SM811運(yùn)行SIL3應(yīng)用程序。執(zhí)行熱插拔或?qū)⒏郊?替換SM811插入正在運(yùn)行的系統(tǒng)會(huì)影響SIL3應(yīng)用程序。應(yīng)配置模塊以便進(jìn)行同步。當(dāng)運(yùn)行SIL3應(yīng)用程序時(shí)，用戶必須接受同步的開始，以配置插入的模塊。如果一個(gè)或多個(gè)SIL3應(yīng)用程序正在控制器中運(yùn)行，則它們被臨時(shí)中斷，以便使應(yīng)用程序的狀態(tài)與新插入的SM811一致。用戶必須通過(guò)在已經(jīng)運(yùn)行的主安全模塊上的數(shù)字輸入3上創(chuàng)建邊緣來(lái)確認(rèn)應(yīng)用程序停止。
Electric isolation Yes Overvoltage category II Rated insulation voltage 50 V Insulation test voltage 500 V a.c. 1 min Nominal voltage 24 V Voltage limits (UL = logic 0, UH = logic 1) - 30 V < UL < 5 V 15 V < UH < 30 V Nominal current 12 mA Current limits - 22 mA < IL < 2 mA 6 mA < IH < 18 mA Input impedance 1.8 kOhm The High Integrity controller is able to run SIL3 applications using SM811. Performing a Hot swap or inserting an additional/replacement SM811 into a running system affects SIL3 applications. The Module should be configured in order to get synchronized. When running SIL3 applications, the start of the synchronization must be accepted by the user, to configure the inserted module. If one or more SIL3 applications are running in the controller, they are temporarily interrupted in order to get a consistent state of the application to the newly inserted SM811. The user must acknowledge the application stop by creating a edge on digital input 3 on the primary, already running, Safety Module.
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