440F-EFADU02830先導閥
故障原因
上述電腦主板的故障類型，對系統(tǒng)的正常運行造成極大影響，主板作為電腦主機的核心部件，能夠?qū)е律鲜龉收犀F(xiàn)象的原因也是多種多樣的，主要的故障原因主要包括以下三個方面。 [5] 
人為因素
電腦本身就是為用戶休閑與工作提供便捷的載體，用戶作為電腦的主要接觸者，在使用過程中，由于其本身的非專業(yè)性，導致經(jīng)常性的不規(guī)范操作現(xiàn)象，從而導致主板性能下降，造成主板故障。例如，在安裝設(shè)備時，安裝位置錯誤或與主板及其他相關(guān)元器件接觸等，都會在程度上引起主板故障。 [5] 
環(huán)境因素
在主板運行或儲存時，由于外界環(huán)境的影響，主板性能也會發(fā)生程度的變化，主要的故障原因可分為兩種：其一，在雷擊或供電不穩(wěn)的情況下，引發(fā)主板故障，屬于一種不可抗拒因素；其二，由于主板所處環(huán)境溫度、靜電、灰塵、濕度等原因，導致主板芯片在運行時被損壞 [5]  。
元器件質(zhì)量因素

SM-PELVPELV Solutions Module - Isolated I/O to NAMUR NE37 specification for chemical industry applications


    SM-PELV PELV Solutions Module - Isolated I/O to NAMUR NE37 specification for chemical industry applications


    SM-PELV PELV Solutions Module - Isolated I/O to NAMUR NE37 specification for chemical industry applications


    SM-PROFIBUS Profibus-DP Solutions Module - Fieldbus Option Only


    SM-PROFIBUSProfibus-DP Solutions Module - Fieldbus Option Only


    SM-PROFIBUSProfibus-DP Solutions Module - Fieldbus Option Only


    SM-RESOLVERResolver Solutions Module providing a resolver feedback port w/simulated encoder output


    SM-SERCOSSERCOS Solutions Module


    SM-SLMSLM Solutions Module


    SMUE-UGSM-Uni Encoder User Guide


    SM-UNI ENCODERUniversal Encoder Plus Solutions Module provides an additional increamental or Absolute encoder feedback port and simulated encoder output.


    SM-WinderSM Speed and Torque Based Centerwind Preprogrammed Option Module


    SNCDD-001.5mso-spacerun: yes> Sync in/out cable 7 Pin Mini-DIN connector on one end and an 8 Pin Mini -DIN connector on the other 1.5 ft Length (FM3/4 to FM3/4)


    SP1201-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 5.2A (1.5hp) Hey Duty - 4.3A (1hp)


    SP1201-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 5.2A (1.5hp) Hey Duty - 4.3A (1hp)


    SP1201-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 5.2A (1.5hp) Hey Duty - 4.3A (1hp)


    SP1202-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 6.8A (2hp) Hey Duty - 5.8A (1.5hp)


    SP1202-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 6.8A (2hp) Hey Duty - 5.8A (1.5hp)


    SP1202-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 6.8A (2hp) Hey Duty - 5.8A (1.5hp)


    SP1203-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 9.6A (3hp) Hey Duty - 7.5A (2hp)


    SP1203-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 9.6A (3hp) Hey Duty - 7.5A (2hp)


    SP1203-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 9.6A (3hp) Hey Duty - 7.5A (2hp)


    SP1204-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 11A (3hp) Hey Duty - 10.6A (3hp)


    SP1204-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 11A (3hp) Hey Duty - 10.6A (3hp)


    SP1204-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 11A (3hp) Hey Duty - 10.6A (3hp)


    SP1401-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 2.8A (1.5hp) Hey Duty - 2.1A (1hp)


    SP1401-LEDUnidrive SP with LED Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 2.8A (1.5hp) Hey Duty - 2.1A (1hp)


    SP1401-NKPUnidrive SP without Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 2.8A (1.5hp) Hey Duty - 2.1A (1hp)


    SP1402-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 3.8A (2hp) Hey Duty - 3.0A (2hp)


    SP1402-LEDUnidrive SP with LED Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 3.8A (2hp) Hey Duty - 3.0A (2hp)


    SP1402-NKPUnidrive SP without Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 3.8A (2hp) Hey Duty - 3.0A (2hp)


    SP1403-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 5.0A (3hp) Hey Duty - 4.2A (3hp)


    SP1403-LEDUnidrive SP with LED Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 5.0A (3hp) Hey Duty - 4.2A (3hp)


    SP1403-NKPUnidrive SP without Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 5.0A (3hp) Hey Duty - 4.2A (3hp)


    SP1404-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 6.9A (5hp) Hey Duty - 5.8A (3hp)


    SP1404-LEDUnidrive SP with LED Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 6.9A (5hp) Hey Duty - 5.8A (3hp)


    SP1404-NKPUnidrive SP without Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 6.9A (5hp) Hey Duty - 5.8A (3hp)


    SP1405-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 8.8A (5hp) Hey Duty - 7.6A (5hp)


    SP1405-LEDUnidrive SP with LED Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 8.8A (5hp) Hey Duty - 7.6A (5hp)


    SP1405-NKPUnidrive SP without Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 8.8A (5hp) Hey Duty - 7.6A (5hp)


    SP1406-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 11A (7.5hp) Hey Duty - 9.5A (5hp)