H3C PSR750-A Manuale utente

Table of Contents

1 Introduction to the Power Module ···········································································································1-1

Introduction ·············································································································································1-1

Specifications··········································································································································1-2

Panel·······················································································································································1-3

Status LEDs············································································································································1-3

2 Installing and Removing the Power Module···························································································2-1

Precautions·············································································································································2-1

Tools························································································································································2-1

Installing and Removing the Power Module ···························································································2-2

Installing the Power Module ············································································································2-2

Removing the Power Module··········································································································2-3

Connecting the Power Cord····················································································································2-3

Connecting AC Power Cord ············································································································2-3

Connecting DC Power Cord············································································································2-4

1-1

1 Introduction to the Power Module

Introduction

The PSR750-A is an AC-input and DC-output power module. It can convert the input voltage to 12 V

and –54 V as required, and its maximum output power is 750 W. The PSR750-D is a DC-input and

DC-output power module. It can convert the input voltage to 12 V and –52 V as required, and its

maximum output power is 1800 W.

Table 1-1 Features supported by the PSR750-A/PSR750-D

Feature Description

Protection Output over-voltage protection, output short-circuit protection, output

current-limiting protection, and overheat protection.

Redundancy Supports parallel connection of two power modules, thus implementing 1+1

redundant current sharing.

Hot swapping When the device works normally, you can power off a power module of the 1+1

redundant power supply system and remove it from the device.

Auto-recovery support of the PSR 750-A/PSR750-D in the protection status is shown in Table 1-2.

Table 1-2 Protection functions of the PSR 750-A/PSR750-D

Model Protection function Status Auto-recovery

support

PSR 750-A Over-voltage protection No power supply with

the power module

deadly locked Not supported

PSR 750-A and

PSR750-D Short-circuit protection No power supply Supported

PSR 750-A and

PSR750-D Current-limitingprotection No power supply Supported

PSR 750-A and

PSR750-D Overheat protection No power supply Supported

PSR750-D Wrong input polarity

protection No power supply Supported

1-2

zIn the case of short-circuit protection, over-current protection, or overheat protection, the power

module recovers itself after the issue is addressed.

zWhen a power module is deadly locked due to over-voltage protection, it does not support the

auto-recovery function. In this case, you need to power off the module, disconnect the power cord

and connect it again, and then power on the module. After all these operations, the power module

gets restored.

zWith the wrong input polarity protection function, the PSR750-D can stop power supply if the DC

input polarity is wrong. After the input polarity is corrected, the power module gets restored.

Specifications

Table 1-3 PSR750-A/PSR750-D specifications

Item Specifications

Rated voltage range PSR750-A: 100 VAC to 240 VAC; 50 Hz or 60 Hz

PSR750-D: –48 VDC to –60 VDC

Max voltage range PSR750-A: 90 VAC to 264 VAC; 47 Hz or 63 Hz

PSR750-D: –40.5 VDC to –72 VDC

Output voltage (dual output) PSR750-A: 12 V and –54 V

PSR750-D: 12 V and –52 V

Max output current

PSR750-A:

z25 A for 12 V output voltage

z9 A for –54 V output voltage

PSR750-D:

z25 A for 12 V output voltage

z32 A for –52 V output voltage

Max output power PSR750-A: 750 W

PSR750-D: 1800 W

Dimensions (H × W × D) 40.5 × 180.6 × 235 mm (1.59 × 7.11 × 9.25 in.)

Operating temperature 0°C to 55°C (32°F to 131°F)

Storage temperature –40°C to +70°C (–40°F to +158°F)

Operating humidity 10% to 95%

Storage humidity 5% to 95%

To ensure normal PoE power supply to the S5800-60C-PWR using the PSR750-D, you need to select

the RPS1000-A3 of H3C that provides a voltage range from –52V to –55V.

1-3

Panel

Figure 1-1 Panel of the PSR750-A

(1) (2) (3) (4)

(5)(6)(7)

(8)

(1) Power switch (push “O” to switch off and push “—” to switch on) (2) AC receptacle

(3) Tab (4) Power module handle

(5) Status LED for DC output (6) Status LED for AC input

(7) Bail latch (8) Captive screw

Figure 1-2 Panel of the PSR750-D

(1) Power module handle (2) Tab

(3) DC input terminal (positive) (4) DC input terminal (negative)

(5) Captive screw (6) Status LED for DC output

(7) Status LED for DC input

Status LEDs

The PSR750-A/PSR750-D has two LEDs, which indicate the input status (AC OK) and output status

(DC OK) of the power module. Table 1-4 describes the colors and working status of the LEDs in different

cases.

Table 1-4 Description of the LEDs

Model LED Color Status

Off No power is input or an input failure occurs.

AC OK On The power input is normal.

Off No power is output or an output failure occurs.

PSR750-A

DC OK On The power output is normal.

1-4

Model LED Color Status

Off No power is input or an input failure occurs.

INPUT OK On The power input is normal.

Off No power is output or an output failure occurs.

PSR750-D OUTPUT

OK On The power output is normal.

In normal cases, the input LED of the PSR750-Apower module turns on while the output LED is still off

after you connect the power cord but leave the power module in the off state; the input and output LEDs

both turn on after you power on and switch on the power module.

The input and output LEDs both turn on after you install the PSR750-D to the power module slot

correctly and connect the power cord to the power module.

However, if the input LED is on but the output LED is off, this case may be caused by output short-circuit,

output over-current, output over-voltage, or over-temperature. To solve such cases, take the following

actions:

1) For the PSR750-A power module, switch off the power module and disconnect the power cord, and

then reconnect the power cord and switch on the power module to check whether the power

module can work properly.

2) For the PSR750-D power module, disconnect the power cord from the external power supply

system and the power module, then reconnect the power cord with the power module and then the

external power supply system, and switch on the power module to check whether the power

module can work properly.

3) If the above action does not work, the case may be caused by over-temperature. Take actions to

cool down the power module, and then it can work properly.

2-1

2 Installing and Removing the Power Module

This chapter describes how to install and remove the power module and the power cord. To prevent

damage to the device and personal injury, follow the power-on and power-off procedures illustrated in

the following figures respectively.

Figure 2-1 Power-on procedure for PSR750-A

Figure 2-2 Power-off procedure for PSR750-A

Figure 2-3 Power-on procedure for PSR750-D

Figure 2-4 Power-off procedure for PSR750-D

Precautions

zWear an ESD-preventive wrist strap and ensure a good skin contact before installing or removing

the power module.

zBefore installing the power module, make sure that the operating voltage provided by the external

power supply system is consistent with that marked on the power module, and the output voltage of

the power module is consistent with the powered device, thus to prevent damage to the power

module and powered device.

zDo not touch any naked wire or terminal. Doing so may result in a personal injury.

zNever place the power module in wet locations and prevent fluid from leaking into the power

module.

zDo not often open the shell of the power module to prevent damage to the power module. If a

failure occurs on the internal wires or units, contact the technical stuff to troubleshoot the problem.

Tools

You need to prepare the following tools for installation and removal:

zflat-blade screwdriver

zPhillips screwdriver

2-2

zESD-preventive wrist strap

Installing and Removing the Power Module

The installation/removal procedure of the PSR750-A and PSR750-D is similar. This manual takes the

PSR750-A as an example to introduce the installation and removal of the power module.

Before installation and removal, make sure that the power module is switched off and no power cord is

connected to the power module.

Installing the Power Module

1) Put on an ESD-preventive wrist strap, make sure that the wrist strap has a good skin contact and is

well grounded.

2) Take the power module from the package and check that the input mode of the power module is as

required.

3) Face the slot and plug in the power module.

4) Insert the power module with the upside up. Grasp the handle of the module with one hand and

hold the module bottom with the other, and then slide the module slowly along the guide rails into

the slot (see callout 1 in Figure 2-5).

5) Fasten the captive screws on the power module clockwise with a Philips screwdriver until the

power module is fixed into the chassis (see callout 2 in Figure 2-5).

Figure 2-5 Install a power module

①

②

2-3

zIf the slot has a filler panel, remove it before inserting the power module.

zRemove the filler module before installing the power module on an S5800-60C-PWR switch. For

installation details, refer to the related installation manual.

zTo prevent damage to the power module or the connector in the powered device, insert the power

module gently. If you encounter a hard resistance while inserting the power module, pull out the

power module and then insert it again.

zIf the captive screw cannot be tightly fixed, check the installation of the power module.

Removing the Power Module

1) Put on an ESD-preventive wrist strap, make sure that the wrist strap has a good skin contact and is

well grounded.

2) Switch off the power module, disconnect the power cord from the power module and external

power supply system, and remove the power cord.

3) Face the power module to be removed from the powered device.

4) Loosen the captive screws of the power module anti-clockwise with a Philips screwdriver until the

captive screw falls off the powered device.

5) Grasp the handle of the module with one hand and pull it out a little, and then hold the module

bottom with the other, and then pull the module slowly along the guide rails out of the slot.

zTo better protect the power module, put the power module into an antistatic bag after removal.

zBecause the PSR750-D has no power on/off switch, the on/off switch operations are skipped.

Connecting the Power Cord

After you insert the power module into the device, you can connect the power cord. For anAC-powered

device, use anAC power cord to connect the external power supply system. For a DC-powered device,

use a DC power cord to connect the external power supply system.

Connecting AC Power Cord

Follow these steps to install the power cord for PSR750-A:

1) Switch off the AC power module, that is, turn the power switch of the module to the “O” position

(see Figure 2-6).

2) Pull the bail latch upwards (see Figure 2-6).

3) Connect one end of the AC power cord shipped with the device to the AC receptacle on the module

(see callout 1 in Figure 2-7).

4) Pull the bail latch to the down to secure the plug to the AC receptacle (see callout 2 in Figure 2-7).

5) Connect the other end of the AC power cord to the external power supply system.

2-4

Figure 2-6 Connect an AC power cord I

Figure 2-7 Connect an AC power cord II

The PSR750-A is equipped with two built-in fans for heat dissipation. The fans rotate at a low speed

after the power cord is connected (AC OK is on) but with the power module in the off state. When you

switch on the power module, the fans adjust their rotating speed according to themodule’s temperature.

Connecting DC Power Cord

To ensure normal PoE power supply to the S5800-60C-PWR using the PSR750-D, you need to select

the RPS1000-A3 of H3C that provides a voltage range from –52V to –55V. Follow these steps to

connect the PSR750-D to the RPS1000-A3:

1) Use a Phillips screwdriver to loosen the captive screws and remove the washer of the PSR750-D,

as shown in Figure 2-8.

2) Insert the captive screws through the washers and OTterminals of the RPS power cords, as shown

in callout 1 in Figure 2-9. Pay attention to the positive (+) and negative (-) marks on the power cords

to avoid connection mistakes.

3) Use the Phillips screwdriver to fix the RPS power cords to the PSR750-D, and ensure a good

contact between the OT terminals and the PSR750-D, as shown in callout 2 in Figure 2-9.

2-5

4) Connect the RPS connectors of the RPS power cords to the outputs OUTPUT1 and OUTPUT2 of

RPS1000-A3 respectively, as shown in callout 3 in Figure 2-9.

5) Use a flat-head screwdriver to fix the RPS connectors to the RPS1000-A3.

Figure 2-8 Remove the protective cover from the PSR750-D

Figure 2-9 Connect the PSR750-D to the RPS1000-A3

Before connecting DC power cord, disconnect power supply to the device.

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