{"product_id":"abb-iemmu21-bailey-infi-90-module-mounting-unit","title":"ABB IEMMU21 Bailey INFI 90 Module Mounting Unit","description":"\u003cp\u003eConfigured for module mounting and backplane interconnection in ABB INFI 90 \/ Symphony \/ Harmony control systems, the \u003cstrong\u003eABB IEMMU21\u003c\/strong\u003e (\u003cstrong\u003eIEMMU21\u003c\/strong\u003e Module Mounting Unit) provides the mechanical mounting structure and internal bus connections for system modules. This rear-mount unit accommodates up to 12 modules, or up to 10 modules when two power modules are installed, subject to system configuration.\u003c\/p\u003e\n\u003ch3\u003eHardware 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\u003eIEMMU21\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\u003eBailey Module Mounting Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eINFI 90 \/ Symphony \/ Harmony\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eRear mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCabinet Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard 483 mm (19 in.) cabinet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 12 modules; up to 10 with two power modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e259.08 x 505.46 x 411.48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Relative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% up to 55 deg C; 5% to 45% up to 70 deg C, noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Relative Humidity\u003c\/td\u003e\n\u003ctd\u003e0% to 95%, noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAir Quality\u003c\/td\u003e\n\u003ctd\u003eNoncorrosive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Power\u003c\/td\u003e\n\u003ctd\u003e120\/240 VAC; 24\/48 VDC specified for IEMMU11\/IEMMU12 only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegulated DC Voltages\u003c\/td\u003e\n\u003ctd\u003e+5 VDC, +15 VDC, -15 VDC, +24 VDC, MCOM, I\/OCOM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Functions\u003c\/td\u003e\n\u003ctd\u003eI\/O-expander bus, module bus, Controlway signals, regulated supply distribution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Rating\u003c\/td\u003e\n\u003ctd\u003e2 to 13.2 Hz: 12 mm peak-to-peak displacement; 13.2 to 100 Hz: 0.7 G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHS Code\u003c\/td\u003e\n\u003ctd\u003e853710\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Count\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus and Power Distribution\u003c\/h3\u003e\n\u003cp\u003eThe IEMMU21 provides the physical mounting and electrical interconnection structure for compatible INFI 90 family modules. Its backplane supports the module bus, I\/O-expander bus, and Controlway signals while distributing regulated DC supply voltages to installed modules.\u003c\/p\u003e\n\u003cp\u003eThe module capacity depends on the installed power-module arrangement. A configuration with two power modules reduces the stated capacity from 12 modules to 10. Before installing replacement modules, verify chassis compatibility, slot allocation, power-module placement, and backplane connector condition against the applicable ABB system documentation.\u003c\/p\u003e\n\u003cp\u003eThe listed primary power specifications for the IEMMU11\/IEMMU12 must not be interpreted as direct input-power ratings for the IEMMU21. Confirm the applicable power-entry and supply arrangement for the installed chassis.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many modules can the IEMMU21 accommodate?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The stated capacity is up to 12 modules, reduced to 10 modules when two power modules are installed. Confirm the system configuration and slot allocation before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which electrical connections does the mounting unit provide?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The chassis supports the module bus, I\/O-expander bus, Controlway signals, and distribution of regulated DC voltages. The installed modules and power configuration determine the applicable electrical interfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What environmental conditions apply to the IEMMU21?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The supplied specifications state an internal cabinet operating range of 0 to 70 deg C, with humidity limits dependent on temperature. Storage is specified from -40 to 85 deg C, with noncondensing relative humidity up to 95%.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify chassis compatibility.\u003c\/strong\u003e Confirm that the IEMMU21 is suitable for the installed ABB INFI 90 \/ Symphony \/ Harmony system and the intended module arrangement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the cabinet mounting location.\u003c\/strong\u003e Check the rear-mount supports, cabinet alignment, fastening points, and available clearance before positioning the chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate power before installation.\u003c\/strong\u003e Follow the site lockout procedure and verify that the relevant power sources are de-energized before handling the chassis or its connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the backplane.\u003c\/strong\u003e Check connectors, contacts, mounting hardware, and the chassis structure for contamination, corrosion, or mechanical damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall modules in approved positions.\u003c\/strong\u003e Follow the applicable system documentation for module placement, power-module allocation, and the maximum supported module count.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck grounding and bonding.\u003c\/strong\u003e Follow ABB cabinet and system grounding instructions. Do not assume that signal common connections replace protective chassis bonding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintain wiring separation.\u003c\/strong\u003e Route power and field wiring separately from sensitive signal wiring where required by the system design. Avoid obstructing cabinet ventilation paths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the assembled system.\u003c\/strong\u003e Before restoring power, confirm mechanical security, connector engagement, power-module placement, and wiring integrity. Check system status after startup according to the applicable commissioning procedure.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52752429613341,"sku":"IEMMU21","price":9.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/5387\/3181\/files\/IEMMU212.jpg?v=1792048229","url":"https:\/\/www.6gcontrols.com\/products\/abb-iemmu21-bailey-infi-90-module-mounting-unit","provider":"6G Controls","version":"1.0","type":"link"}