Samsung OfficeServ 7400 Installation Manual

Also see for OfficeServ 7400: System administration guide User guide User instructions Technical manual General description

Contents

OfficeServ 7400 Installation Manual© SAMSUNG Electronics Co., Ltd. 4-34.2 Connecting External RectifiersThe external rectifier is an external power that supplies the power to IP phones or WBS24connected when LIM-P board is used in the OfficeServ 7400 system. Since the internalpower source has the insufficient capacity, the additional power source to supply the powerto external equipment is required.The procedure to connect an external rectifier is as follows:1) Power off the OfficeServ 7400 System and an external rectifier.2) There are three screws to connect the power cable to A and B parts(GND and -54 V)in the back panel of the external rectifier.Prepare a power cable like the figure below. The power cable consists of a red line anda blue line and the ends of the lines are marked as GND(for red line), -48VDC(forblue line). The other end of the power cable has the connector to connect to the socketof the external rectifier for the OfficeServ 7400 system.Figure 4.2 Power Cable3) Loose screws and connect the power cable as shown the figure below.Connect GND(red line) and -48 VDC(blue line) of the power cable to A part(GND)and B part(-54 V), separately. At this time, any of three screws in each part is allowedto be connected.Figure 4.3 Connecting an External RectifierButton for exteranl batterySocket for ExternalA BRed Line Blue LineOfficeServ7400ExternalRectifier