{"product_id":"siemens-6ep1931-2dc21-sitop-dc-ups-module","title":"Siemens 6EP1931-2DC21 SITOP DC UPS Module 24V\/6A DIN Rail No Interface","description":"\u003cp\u003eThe Siemens 6EP1931-2DC21 is a SITOP DC UPS module that buffers a 24 V DC bus at 6 A, drawing 24 V\/6.85 A on the input side to power the load and charge an external battery module at the same time. It has no communication interface, mounts on a 50 mm-wide DIN rail, and switches to battery backup at an adjustable 22-25.5 V threshold with a 1 s startup delay when the incoming supply drops.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrder Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6EP1931-2DC21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSITOP DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC UPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage DC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V rated (22...29 V range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 A rated (plus approx. 0.6 A with empty battery)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuffer Threshold (adjustable)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22...25.5 V in 0.5 V steps, preset 22.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V DC, normal and buffering mode (Vin minus approx. 0.5 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 A rated (0...6 A, normal and buffering mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.3 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStartup Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 s typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Rise Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 ms typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95% normal operation, 94.5% on battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Loss\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7 W typical (normal), 8 W typical (on battery)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupplied Active Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e144 W typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 A \/ 0.4 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReverse polarity (input and battery), output short-circuit proof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP20 \/ Class III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature (operation)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-25...+60C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Dimensions (WxHxD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 x 125 x 125 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN rail EN 60715 35x7.5\/15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMTBF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,085,776 h at 40C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eCertifications \u0026amp; Standards\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCE\u003c\/li\u003e\n\u003cli\u003eEAC\u003c\/li\u003e\n\u003cli\u003eShipbuilding\u003c\/li\u003e\n\u003cli\u003eABS\u003c\/li\u003e\n\u003cli\u003eDNV\u003c\/li\u003e\n\u003cli\u003eEPD\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eWithout a communication interface, the 6EP1931-2DC21 handles buffering autonomously through its floating relay contacts (Bat\/OK and Alarm\/Bat) rather than reporting status over a serial link, so it suits installations where the 24 V OK \/ battery-in-use signal only needs to drive an indicator lamp or a digital input on a separate I\/O module. The buffer threshold is adjustable from 22 to 25.5 V in 0.5 V steps, letting the switchover point be set above the normal supply's minimum tolerance so the module engages before a marginal PLC power dip. At 6 A output it draws 6.85 A on the input to power the load and charge the battery at the same time, so the upstream 24 V supply needs headroom beyond the 6 A load current.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960761737499,"sku":"6EP1931-2DC21","price":254.28,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6ep1931-2dc21-sitop-dc-ups-module.png?v=1789779992","url":"https:\/\/stoklink.com\/products\/siemens-6ep1931-2dc21-sitop-dc-ups-module","provider":"Stoklink","version":"1.0","type":"link"}