Contents

Introduction· 1

Schematic Views· 2

Specifications· 3

Status LED·· 3

Power Module Installation and Removal 5

Installing and Removing a Power Module· 5

Installing a Power Module· 6

Removing a Power Module· 7

Connecting the Power Cable· 7

Connecting the AC Power Cable· 8

Connecting the DC Power Cables· 9

 

Introduction

The PSR650-A is a built-in power module with AC input and DC output while the PSR650-D is a built-in power module with DC input and DC output. These two power module models can transfer the input voltage into 12 V or 3.3 V needed by the device.

Table 1 Features of the PSR650-A and PSR650-D power modules

Feature	Description
Protection functions	Support input under-voltage protection, output over-voltage protection, short-circuit protection, and overheat protection
Hot swap support	Support hot swap while the device is in operation
1+1 hot backup support	Support 1 + 1 hot backup and current sharing

 

CAUTION: For a device that supports both AC and DC inputs, you can choose either of the two types of power modules as needed, but do not use different types of power modules in the same device.

 

Schematic Views

Figure 1 Schematic view of the PSR650-A

(1) Bail latch	(2) AC power socket
(3) Power switch	(4) Status LED
(5) Power module handle	(6) Captive screws

 

Figure 2 Schematic view of the PSR650-D

(1) Grounding point
(2) Positive (+) terminal of DC input
(3) Negative (–) terminal of DC input
(4) Power switch	(5) Status LED
(6) Power module handle	(7) Captive screws

 

Specifications

Table 2 Technical specifications for the PSR650-A and PSR650-D

Item		Specifications
Rated voltage range		PSR650-A: 100 VAC to 240 VAC; 50 Hz or 60 Hz
		PSR650-D: –48 VDC to 60 VDC
Output voltage		12 V or 3.3 V
Max output current		54A (12V)
		4A (3.3V)
Max output power		650 W
Dimensions (H × W × D)		40 × 140 × 350 mm (1.57 × 5.51 × 13.78 in.)
Weight		PSR650-A: 2.5 kg (5.51 lb)
		PSR650-D: 2.3 kg (5.07 lb)
Environment temperature requirement	Operating temperature	0~55°C
	Storage temperature	-40~70°C

 

Status LED

The PSR650-A and PSR650-D have only one status LED. Table 3describes its colors and working status.

Table 3 Description of LEDs on the PSR650-A and PSR650-D

Color/status	Meaning	Possible causes
Green	The power module is operational.	—
Red	The power module is faulty.	Power alarm (input under-voltage, output short circuit, output over-current, output over-voltage, or overheat occurred to the power module, and the power module took a self-protection action).
		The power module fan is faulty.
OFF	The power input is faulty.	The power switch is off.
		The power cable is connected incorrectly.

 

CAUTION: ·     In case of a power alarm (the OUTPUT LED turns red), check whether output short circuit, output over-current, output over-voltage, or overheat occurred to the power module. In the case of output short circuit, or abnormal temperature, the power module will resume normal operation automatically when the fault is cleared. However, if the power alarm is caused by output over-voltage, the power module will get locked up and will not resume operation automatically. In this case, turn off the power switch, disconnect the power cables, and then reconnect the power cable and turn on the power switch. ·     Do not turn on and off the power switch too frequently. After turning off the power switch, wait at least 30 seconds before turning it on again.

Power Module Installation and Removal

When installing or removing a power module, be sure to follow the sequence shown in Figure 3 or Figure 4.

Figure 3 Flow chart for installing a power module

 

Figure 4 Flow chart for removing a power module

 

Installing and Removing a Power Module

This section describes how to install and remove a PSR650-A power module. You can install and remove a PSR650-D power module in a similar way.

You need to prepare the tools that you need to use to install or remove power modules.

 

CAUTION: When installing or removing a power module, make sure that the power switch is in the OFF position and no power cable is connected to the power module.

 

Figure 5 Install/remove a PSR650-A power module

 

Installing a Power Module

1.     Wear an ESD-preventive wrist strap and take a new power module out of its package. Check that the input mode of the power module is correct.

2.     Grasp the handle of the module with one hand and hold the module bottom with the other. Slide the module slowly along the guide rails into the chassis until it snaps into the chassis backplane.

 

NOTE: To prevent damage to the power module and the connection terminals on the backplane, make sure to pull the module out first in case of any misalignment, and then push it in again.

 

3.     Tighten the captive screws with a number No. 2 Philips screwdriver.

 

CAUTION: If the captive screws cannot be tightened, check whether the power module is properly installed.

 

Removing a Power Module

Remove a power module in the opposite way you install it:

1.     Wear an ESD-preventive wrist strap and loosen the captive screws on the power module.

2.     Grasp the handle of the power module with one hand to pull out a part of it. Then hold the module bottom with the other hand and take out the module slowly.

 

CAUTION: Since the power module is heavy, you are recommended to grasp the power module handle with one hand and hold the bottom with the other while pulling out a power module slowly.

 

Connecting the Power Cable

After installing the power module to the device, you can connect the power cables. When connecting power cables, check that:

·     The power switch is in the OFF position.

·     In the case of a DC power module, make sure that the power switch at the other end of the DC power cables is also in the OFF position to avoid danger.

Connecting the AC Power Cable

Figure 6 Connect the AC power cable (I)

 

Figure 7 Connect the AC power cable (II)

 

1.     Plug one end of the power cable shipped with the device into the power socket and use the bail latch to lock the power cable.

2.     Plug the other end into the AC power socket strip of the AC mains.

Connecting the DC Power Cables

Figure 8 Connect the DC power cables

 

CAUTION: ·     Turn off all power supplies to the device before connecting the DC power cables. ·     The power cord color code scheme in Figure 8 is for illustration only. The cable delivered for your country or region might use a different color scheme. When you connect a power cord, always identify the polarity symbol on its wires.

 

To connect the PSR650-D power module, proceed as follows:

1.     Remove the protection cover from the wiring terminals.

2.     Loosen the fastening nut on the wiring terminals with a No. 2 Philips screwdriver.

3.     Connect the other ends of the wires to the DC power source wiring terminals, with the negative wire (– or L–) to the negative terminal (–) and the positive wire (+ or M/N) to the positive terminal (+).

4.     Put the protection cover on the wiring terminals.

5.     Connect the other ends of the DC power cables to the wiring terminals of the power source.