Functions of the EMUA Power Input The EMUA supports input voltage detection. The alarm threshold for the input voltage can be configured on the BTS/NodeB and delivered to the EMUA. The EMUA provides two power input ports, which are protected from inverse connections. The EMUA2416 and EMUA2432 support +24 V DC power input, and the voltage can range from +18 V DC to +36 V DC. The EMUA4832 supports -48 V DC power input, and the voltage can range from -36 V DC to -72 V DC. Environment Monitoring The EMUA provides an independent port for +12 V/+24 V DC current-type (4 mA - 20 mA) humidity/temperature sensors. The temperature monitoring range is -20oC [-4oF] to 80oC [176oF]. The EMUA provides four ports for monitoring analog signals. Voltage-type (0 V - 5 V) sensors and current-type (4 mA - 20 mA) sensors can be used. The types of monitored analog signals can be configured through the DIP switch settings according to the BTS/NodeB configuration. Boolean Signal Monitoring The EMUA provides ports for monitoring Boolean signals. Dry contact point signals and OC signals are supported. The EMUA2416 supports 16 ports for Boolean signal monitoring. The EMUA2432 or EMUA4832 supports 32 ports for Boolean signal monitoring. EMU configuration steps and how to add AC failure alarm1- connect EMU to UPEU. 1- Connect EMU to UPEU the universal power and environment interface unit . You can plug the EMU into the UPEU in port MON-0 or MON-1, UPEU is responsible for supplying BBU with power 12V DC , converting -48 V input power into +12 V DC power and then distributing , It also contains two ports to connect external alarms, two ports with one channel of RS485 signals each and two other channels of four channels each of logical signals. 2-use command ADD EMU to add emu to configuration. manager port no means which port in upeu that emu connects to mon-1 or mon-0
