{"product_id":"yokogawa-alf111-s50-f9s00-foundation-fieldbus-communication-module","title":"Yokogawa ALF111-S50\/F9S00 Foundation Fieldbus Communication Module","description":"\u003cp\u003eThe Yokogawa ALF111-S50\/F9S00 is a Foundation Fieldbus communication module designed for Yokogawa N-IO\/FIO systems. It provides four low-speed voltage-mode Foundation Fieldbus ports, each supporting one fieldbus segment at a transmission rate of 31.25 kbps. The module supports LAS and clock master functions, dual-redundant configuration, and communication with up to 32 fieldbus devices per segment.\u003c\/p\u003e\n\u003ch3\u003eFoundation Fieldbus Communication\u003c\/h3\u003e\n\u003cp\u003eThe ALF111 provides four independent fieldbus ports for connecting field devices to the control system. Each port corresponds to one Foundation Fieldbus segment and uses low-speed voltage-mode communication.\u003c\/p\u003e\n\u003cp\u003eKey communication characteristics include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNumber of ports: 4\u003c\/li\u003e\n\u003cli\u003eSegments: 1 segment per port\u003c\/li\u003e\n\u003cli\u003eTransmission speed: 31.25 kbps\u003c\/li\u003e\n\u003cli\u003eMaximum fieldbus devices: 32 units per segment, including the ALF111 module\u003c\/li\u003e\n\u003cli\u003eCommunication functions: Link Active Scheduler (LAS) and Clock Master\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module supports up to 48 control I\/O points per segment. High- and medium-speed scanning cycle requirements can be accommodated by specifying up to 6 I\/O points as high-speed scanning types on the ER bus.\u003c\/p\u003e\n\u003ch3\u003eRedundancy and System Configuration\u003c\/h3\u003e\n\u003cp\u003eThe ALF111 supports dual-redundant configuration. Two ALF111 modules can be installed in the designated adjacent slots within the same node unit to establish a redundant arrangement.\u003c\/p\u003e\n\u003cp\u003eFor system planning, the maximum of 32 fieldbus devices applies to each segment, with the ALF111 itself counted as one device. This limit should be considered when calculating the available device capacity for each connected segment.\u003c\/p\u003e\n\u003ch3\u003eFieldbus Connection and Installation\u003c\/h3\u003e\n\u003cp\u003eThe ALF111-S50\/F9S00 uses a pressure clamp terminal block for external fieldbus connections. Its specified option code \/F9S00 identifies the Fieldbus pressure clamp terminal block, model ATF9S-00.\u003c\/p\u003e\n\u003cp\u003eThe removable terminal block incorporates built-in terminators that can be switched on or off. The module can also connect to a terminal board through a dedicated cable.\u003c\/p\u003e\n\u003cp\u003eSupported installation platforms include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eANB10 series\u003c\/li\u003e\n\u003cli\u003eANB11 series\u003c\/li\u003e\n\u003cli\u003eAFV30 series\u003c\/li\u003e\n\u003cli\u003eAFV40 series\u003c\/li\u003e\n\u003cli\u003eA2FV50 series\u003c\/li\u003e\n\u003cli\u003eA2FV70 series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe module has a maximum current consumption of 0.5 A. Its specified withstand voltage is 1500 V AC for one minute, covering field-to-system isolation and isolation between the primary and secondary sides and between channels.\u003c\/p\u003e\n\u003cp\u003eThese isolation ratings are relevant when checking electrical separation requirements between field wiring and system-side circuits.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eALF111-S50\/F9S00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFoundation Fieldbus Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eN-IO\/FIO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eFoundation Fieldbus, low-speed voltage mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSegments per Port\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Speed\u003c\/td\u003e\n\u003ctd\u003e31.25 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Control I\/O Points\u003c\/td\u003e\n\u003ctd\u003e48 points per segment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-Speed Scanning\u003c\/td\u003e\n\u003ctd\u003eUp to 6 I\/O points specified as high-speed scanning types on the ER bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Fieldbus Devices\u003c\/td\u003e\n\u003ctd\u003e32 units per segment, including ALF111\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Functions\u003c\/td\u003e\n\u003ctd\u003eLAS function, Clock Master function\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eDual-redundant configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Connection\u003c\/td\u003e\n\u003ctd\u003ePressure clamp terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Block Model\u003c\/td\u003e\n\u003ctd\u003eATF9S-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminator\u003c\/td\u003e\n\u003ctd\u003eBuilt-in, switchable on\/off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Board Connection\u003c\/td\u003e\n\u003ctd\u003eDedicated cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Platforms\u003c\/td\u003e\n\u003ctd\u003eANB10, ANB11, AFV30, AFV40, A2FV50, A2FV70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e0.5 A or less\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstand Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eField-to-system; primary-to-secondary; channel-to-channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.40 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eModel and Suffix Identification\u003c\/h3\u003e\n\u003cp\u003eThe complete ordering number identifies the standard module configuration and its fieldbus terminal block option.\u003c\/p\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eALF111\u003c\/td\u003e\n\u003ctd\u003eFoundation Fieldbus Communication Module for N-IO\/FIO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-S\u003c\/td\u003e\n\u003ctd\u003eStandard type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eWithout explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003ctd\u003eBasic type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\/F9S00\u003c\/td\u003e\n\u003ctd\u003eFieldbus pressure clamp terminal block option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eATF9S-00\u003c\/td\u003e\n\u003ctd\u003eAssociated pressure clamp terminal block model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eThe \/F9S00 option is particularly relevant when checking replacement configurations because it specifies the terminal block arrangement supplied with the module.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many Foundation Fieldbus segments can the ALF111-S50\/F9S00 support?\u003c\/p\u003e\n\u003cp\u003eA: The module provides four ports, with one Foundation Fieldbus segment per port. Therefore, one module supports four fieldbus segments.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum number of fieldbus devices supported per segment?\u003c\/p\u003e\n\u003cp\u003eA: Each segment supports a maximum of 32 fieldbus devices. The ALF111 module itself counts as one unit toward this limit.\u003c\/p\u003e\n\u003cp\u003eQ: Can two ALF111 modules operate in a redundant configuration?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The ALF111 supports dual redundancy using two modules installed in the designated adjacent slots within the same node unit. The system configuration must accommodate the specified installation arrangement.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":68249147605234,"sku":"ALF111-S50\/F9S00","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/5589\/5794\/files\/ALF111-S501.jpg?v=1793607289","url":"https:\/\/www.petrospare.com\/products\/yokogawa-alf111-s50-f9s00-foundation-fieldbus-communication-module","provider":"Petro Spare Industrial Limited","version":"1.0","type":"link"}