Description
Manufacturer : ABB
Product No. : IEMMU21
Product Type : Bailey Module Mounting Unit
Capacity : 12 modules
Mounting : Standard 483-mm (19-in.) cabinet
Ambient temperature (operating)
Temperature rating within the enclosure or cabinet.
Internal cabinet rating: 0° to 70°C (32° to 158°F)
Relative humidity (operating)
5% to 95% up to 55°C (131°F), noncondensing
5% to 45%, up to 70°C (158°F), noncondensing
Storage and transport temperature : –40° to 85°C (–40° to 185°F)
Storage and transport relative humidity : 0% to 95%, noncondensing
Air quality : Noncorrosive
Primary power : 120/240 VAC, 24/48 VDC (IEMMU11/IEMMU12 only)
Regulated DC voltages : +5 VDC, +15 VDC, –15 VDC, +24 VDC, MCOM, I/OCOM
Vibration : 13.2 to 100 Hz, 0.7 Gs 2 to 13.2 Hz, 12 mm (0.47 in.) p-p displacement
Weight : 3.63 Kg
Shipping Weight : 5 Kg
The IEMMU11, IEMMU12, IEMMU21, and IEMMU22 are module mounting units used to house standard INFI 90 OPEN system modules and the BRC-100 Harmony Bridge Controllermodule of the Symphony system in system cabinets.
The module mounting unit consists of a sheet metal card chassis and a printed circuit board backplane assembly. The opentop and bottom structure allow air to flow over the modules. Mounting flanges are provided for mounting the mounting unitin a standard Elsag Bailey 483-millimeter (19-inch) cabinet.
Modules can be installed and removed quickly and easily. Themodule is held in position by card guides, the connectors onthe backplane, and the module’s front panel, captive fasteninglatches.
The backplane is a multilayer printed circuit board assemblycontaining electronic components, dipshunt sockets, connectors, and jumpers. In most cases, the mounting unit providesdirect I/O cable coupling to the modules. The exception to thisis when a BRC-100 Harmony Bridge Controller module isinstalled in the MMU.
The IEMMU11 and IEMMU12 module mounting units providephysical mounting for up to 12 system modules or ten systemmodules and a maximum of two IEPAS02, IEPDS01/02,IEPAF02, and IEPDF01/02 power modules. They also provideelectrical distribution of I/O expander bus, module bus, andControlway signals; distribution of regulated power supplyvoltages (+5 volts, +15 volts, –15 volts and 24 volts); and distribution of primary power.
Primary power is the 120/240 VAC or 24/48 VDC that supplies power to power modules (IEPAS02, IEPAF02, IEPDS01,IEPDF01, IEPDS02 and IEPDF02) that can be mounted in the mounting units. Typically, systems that use IEPMU01/02 donot use distributed primary power to the mounting units. Systems that use Modular Power System II do not allow distributed primary power to the mounting units.
The IEMMU11 module mounting unit is used when the cabinetconfiguration requires a rear mount chassis with primarypower distribution.
The IEMMU12 module mounting unit is used when the cabinetconfiguration requires a front mount chassis with primarypower distribution.
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