{"product_id":"yokogawa-sarm55c-digital-relay-output-terminal-board","title":"Yokogawa SARM55C Digital Relay Output Terminal Board","description":"\u003cp\u003eConfigured for relay output execution in CENTUM VP \/ CENTUM CS 3000 systems, the \u003cstrong\u003eYokogawa SARM55C\u003c\/strong\u003e , also cataloged as the \u003cstrong\u003eSARM55C\u003c\/strong\u003e Digital Relay Output Terminal Board, provides direct physical\/electrical execution for 32 digital channels.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003eSARM55C Terminal Board\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Yokogawa rack-mount footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC field-supplied power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Count\u003c\/td\u003e\n\u003ctd\u003e32 relay output channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eRelay contact (Form A or Form C depending on model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Terminals\u003c\/td\u003e\n\u003ctd\u003eM4 screw terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-system isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eInductive load suppression for voltage spike protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRack-mounted, compatible with Yokogawa I\/O systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Tolerance\u003c\/td\u003e\n\u003ctd\u003eIndustrial-grade PCB with protective coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDigital Loop Isolation \u0026amp; Relay Output Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe interface unit provides galvanic channel-to-channel and channel-to-system isolation across all 32 relay channels to isolate control electronics from high-voltage field transients. Integrated inductive load suppression circuitry attenuates reverse voltage spikes caused by inductive field devices such as solenoids and interposing relays. Channel routing preserves signal integrity across the backplane bus, keeping total loop noise low in high-density digital execution architecture.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What size field wiring connections are supported by the SARM55C terminal board?\u003c\/p\u003e\n\u003cp\u003eA: The board utilizes M4 screw terminals to provide secure mechanical clamping and low-resistance electrical contact for field wiring connections.\u003c\/p\u003e\n\u003cp\u003eQ: How are voltage spikes handled when switching inductive loads like solenoids?\u003c\/p\u003e\n\u003cp\u003eA: Each channel features onboard inductive load suppression to absorb inductive voltage spikes and extend relay contact life.\u003c\/p\u003e\n\u003cp\u003eQ: Can channels be configured as Form A or Form C contacts?\u003c\/p\u003e\n\u003cp\u003eA: The contact configuration (Form A or Form C) depends on the specific hardware model variant of the SARM55C board selected.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the terminal board securely onto the Yokogawa I\/O rack frame, confirming mechanical latches engage properly.\u003c\/li\u003e\n\u003cli\u003eEnsure ambient cabinet temperatures remain within the -20 to +70 deg C operating window.\u003c\/li\u003e\n\u003cli\u003eTerminate field wiring to the M4 screw terminals using properly sized ring or spade lugs; torque all connections evenly to prevent loose contacts under high vibration.\u003c\/li\u003e\n\u003cli\u003eConnect field-supplied 24 VDC power lines with correct polarity before energizing output loads.\u003c\/li\u003e\n\u003cli\u003eEnsure proper cabinet grounding to maximize the effectiveness of onboard surge and noise suppression circuits.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52602463584536,"sku":"SARM55C","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/screenshot_2026-08-19_15-46-26_03c3233d-13ff-4a5d-a348-2e238490fee6.png?v=1788332882","url":"https:\/\/www.innoplcsync.com\/products\/yokogawa-sarm55c-digital-relay-output-terminal-board","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}