{"product_id":"1sap210600r0001-abb-tu551-cs31-interface-terminal-units","title":"1SAP210600R0001 | ABB | TU551-CS31 Interface Terminal Units","description":"\u003cp\u003eConfigured for field I\/O bus interface mounting and signal routing in S500 I\/O platforms, the \u003cstrong\u003eABB TU551-CS31 1SAP210600R0001\u003c\/strong\u003e (\u003cstrong\u003eTU551-CS31\u003c\/strong\u003e Interface Terminal Units) provides direct physical\/electrical execution.\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\u003eTU551-CS31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1SAP210600R0001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eInterface Terminal Units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.236 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e67.5 x 135 x 28 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC supply voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eScrew terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFieldbus Protocol\u003c\/td\u003e\n\u003ctd\u003eCS31 protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngress Protection\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and Network Determinism\u003c\/h3\u003e\n\u003cp\u003eThe interface terminal unit links remote S500 I\/O modules directly to the CS31 fieldbus network, maintaining steady backplane bus communication velocity across adjacent terminal slots. Integrated signal paths preserve transmission speed and firmware flash compatibility between connected bus modules and the primary controller. Screw terminal blocks maintain secure galvanic contact, minimizing contact resistance and preventing cross-talk across high-density I\/O distributions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the TU551-CS31 unit contain active processor components?\u003c\/p\u003e\n\u003cp\u003eA: No, the TU551-CS31 functions as a passive mounting and wiring base that routes power, field signals, and bus communication to the plugged-in S500 I\/O interface module.\u003c\/p\u003e\n\u003cp\u003eQ: How is physical chassis earth grounding completed for the terminal base?\u003c\/p\u003e\n\u003cp\u003eA: Frame grounding is established automatically through the integrated metallic rear grounding contact clips when snapped onto a grounded DIN rail.\u003c\/p\u003e\n\u003cp\u003eQ: Can terminal wiring be modified while the system is powered?\u003c\/p\u003e\n\u003cp\u003eA: Field supply voltage must be turned off prior to attaching or disconnecting field wires on the screw terminals to avoid electrical shorts.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off primary 24 VDC power sources prior to mounting or wiring the TU551-CS31 unit.\u003c\/li\u003e\n\u003cli\u003eSnap the 67.5 x 135 x 28 mm terminal base onto a standard 35 mm DIN rail until the locking spring engages.\u003c\/li\u003e\n\u003cli\u003eVerify mechanical continuity between the rear metal grounding clips and the grounded DIN rail.\u003c\/li\u003e\n\u003cli\u003eStrip field wiring ends to specified lengths and secure them tightly into the screw terminal blocks.\u003c\/li\u003e\n\u003cli\u003eMaintain a minimum clearance of 200 mm between CS31 fieldbus cabling and high-voltage AC conductors to reduce electrical noise.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53250618229045,"sku":"TU551-CS31 1SAP210600R0001","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/TU551-CS311SAP210600R0001.png?v=1785910020","url":"https:\/\/www.5gplc.com\/products\/1sap210600r0001-abb-tu551-cs31-interface-terminal-units","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}