SR511 3BSE000863R1 3BSE000863R0001

The regulator SR511 3BSE000863R1 is a switch-mode power converter transforming 24 V d.c. to the stabilized voltages 5 V and 2.1 V d.c.All of these voltages have a common negative terminal.

The SR511 3BSE000863R1 is designed as a plug-in device and is positioned in a controller subrack to interface with the backplane bus. Use the regulator in equipment where the regulator output terminals are connected in parallel to other regulators of the same family. Thus, n regulators can share the load, giving an arbitrary capacity of power, and where adding an extra regulator to the stack, the (n+l) -redundant power supply system is derived. In an Advant Controller 450, use two SR5lls to achieve redundancy.

Two 24 V power supply networks with a common negative terminal can connect to the SR5ll via the subrack power bus.
The 5 V output is rated 35 A load, exclusive of the current delivered by the 2.1 V output.

An SR511 includes a supervisory logic circuitry signalling the normal status by closing a semiconductor switch, thereby connecting the signal output terminal to ground via a 100-ohm resistor. A faulty or missing unit leaves the signal terminal open.

Indicators:
LED F (Fail, red) lights for undervoltage or overvoltage

LED 5 V (green) lights for normal voltage or overvoltage, but not for undervoltage

LED 2 V (green) lights for normal voltage or overvoltage, but not for undervoltage

Input 24 V d.c.

Dual 24 V d.c. inputs

Rated input power         310 W   at full load: 5 V, 2.1 V

Maximum input power   350 W  at current limit 46 A

Efficiency                       70% typ.

Rated input voltage       24 V d.c.

Voltage variation           +8 V

External fuse                30 AF max for each 24 V terminal

Output 5 V d.c.

Rated output voltage     5.15 V (adjustable)at 25 A load

Voltage variation           5.3 V max., 5.0 V mi . at 0 A and 40 A, respectively

Ripple voltage              10 mV typ.att 40 A load

Load range                   1 A -3A exclusive load

Current limit                 43 A +3 A(inclusive 2V),Uin=24 V

Overvoltage protection  6.3 V   electronic
                                      7 V typ. (6.5 V min.)zener clamp

Output 2 v d.c.
Rated output voltage       2.1 V   at 1.5 A load

Voltage variation             2.2 V max.. 2.0 V min. at 0 A and 6 A, respectively

Ripple voltage                 <10 mV typ.at <8 A load

Rated load current          1.3 A average

Current limit                    8 A min.(9.5 A typ.)

Temperature protection linearly decreases the output current at overtemperature.