{"product_id":"abb-tb521-eth-1sap112100r0270-ac500-terminal-base","title":"ABB TB521-ETH 1SAP112100R0270 AC500 Terminal Base","description":"\u003cp\u003eConfigured for signal routing, modular processor mounting, and bus connection management in AC500 V2 PLC platforms, the \u003cstrong\u003eABB TB521-ETH 1SAP112100R0270\u003c\/strong\u003e (\u003cstrong\u003eTB521-ETH\u003c\/strong\u003e Terminal Base) provides direct physical\/electrical execution. It accommodates one CPU module along with two expansion slots dedicated to communication modules. The base unit integrates an Ethernet RJ45 interface, two RS232\/RS485 serial communication ports, and removable terminal blocks powered via a 24 VDC process supply.\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\u003eTB521-ETH 1SAP112100R0270\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\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\u003e0.186 kg (0.410 lbs) net \/ 0.245 kg gross\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e123.5 mm x 135 mm x 28 mm (4.86 in x 5.31 in x 1.10 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C (Storage: -40 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 supply voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Slots\u003c\/td\u003e\n\u003ctd\u003e2 slots for communication modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterfaces\u003c\/td\u003e\n\u003ctd\u003e1x Ethernet RJ45, 2x RS232\/RS485 serial, D-SUB \/ terminal connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eABB AC500 V2 processors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDegree of 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 Latency Limits\u003c\/h3\u003e\n\u003cp\u003eThe TB521-ETH terminal base establishes high-velocity backplane bus communication routes between the mounted AC500 CPU and communication expansion modules. Dedicated physical trace routing on the internal printed circuit board prevents cross-talk and preserves deterministic execution speeds across the backplane bus. High signal integrity over the embedded trace pathways ensures low-latency data transfers across the Ethernet network interface and serial communication channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the TB521-ETH support hot-swapping of communication modules attached to the slots?\u003c\/p\u003e\n\u003cp\u003eA: No. Power to the 24 VDC process supply must be isolated prior to inserting or removing communication modules or the CPU processor to prevent backplane communication errors and hardware damage.\u003c\/p\u003e\n\u003cp\u003eQ: What physical connectors are provided on the terminal base for serial communications?\u003c\/p\u003e\n\u003cp\u003eA: The terminal base incorporates serial interfaces supporting RS232 or RS485 communication lines via D-SUB and screw-type terminal blocks.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSnap the TB521-ETH terminal base onto a standard 35 mm DIN rail, verifying that the metal grounding spring makes direct mechanical contact with the unpainted rail surface.\u003c\/li\u003e\n\u003cli\u003eConfirm that the 24 VDC system power supply is turned off before connecting power wiring to the terminal base power terminals.\u003c\/li\u003e\n\u003cli\u003eAlign the AC500 processor or communication modules with the guide slots on the terminal base and press firmly until the locking mechanism fully clicks into position.\u003c\/li\u003e\n\u003cli\u003eKeep serial (RS232\/RS485) and Ethernet signal cables at least 200 mm away from high-voltage AC lines and switching inductive loads.\u003c\/li\u003e\n\u003cli\u003eConnect all cable shielding for serial and Ethernet lines to the functional earth terminal near the panel entry point to eliminate electrical interference.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53224472117557,"sku":"TB521-ETH 1SAP112100R0270","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/TB521-ETH1.png?v=1785305286","url":"https:\/\/www.5gplc.com\/products\/abb-tb521-eth-1sap112100r0270-ac500-terminal-base","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}