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Optical ILA Power System

 

Optical ILA AC Power Supply Description

The AC power supplies in the optical ILA (see Figure 2) are hot-removable and hot-insertable field-replaceable units (FRUs) that you can install without powering off the optical ILA or disrupting the functioning of the optical ILA. The optical ILA has two AC power supplies. Both the power supplies are initially installed at the factory. See Figure 1 for the power numbering scheme, the power supply number (0 or 1) is located on the top of the chassis.

Figure 1: Power Supply Numbering
Power Supply Numbering
Figure 2: AC Power Supply in an Optical ILA
AC Power Supply in an Optical
ILA
  1
Power cord retainer
  3
Power plug connector
  2
Handle
  4
Ejector lever

Each of the 150-W power supplies has a single AC input. The power supply provides 12-VDC output with a standby voltage of 12 VDC. An optical ILA has twice the number of power supplies needed to power all of the components in the device, which is known as 1+1 redundancy. When the optical ILA has both power supplies installed and connected to power, the device has full power redundancy. If a power supply fails or is removed, another power supply balances the electrical load without interruption.

The fans in the power supply provide front-to-back airflow, which is also known as airflow out (AFO).

Caution

To avoid electrical injury, carefully follow instructions in Connecting AC Power to an Optical ILA, Installing an AC Power Supply in an Optical ILA, and Removing an AC Power Supply from an Optical ILA.

Note

For more information about power system redundancy, see Optical ILA Component Redundancy.

Optical ILA DC Power Supply Description

The DC power supplies in the optical ILA (see Figure 3) are hot-removable and hot-insertable field-replaceable units (FRUs) that you can install without powering off the optical ILA or disrupting the functioning of the optical ILA. The DC version of the optical ILA has two DC power supplies. Both the power supplies are initially installed at the factory.

Figure 3: DC Power Supply in an Optical ILA
DC Power Supply in an Optical
ILA
  1
Handle
  3
Ejector lever
  2
DC terminal
 

Each of the two 150-W power supplies has a single DC input. The power supply provides 12 VDC output with a standby voltage of 12 VDC. An optical ILA has twice the number of power supplies needed to power all of the components in the device, which is known as 1+1 redundancy. When the optical ILA has both power supplies installed and connected to power, the device has full power redundancy. If a power supply fails or is removed, the other or second power supply balances the electrical load without interruption.

The fans in the power supply provide front-to-back airflow, which is also known as airflow out (AFO).

Caution

To avoid electrical injury, carefully follow instructions in Connecting DC Power to an Optical ILA, Installing a Power Supply in an Optical ILA, and Removing a Power Supply from an Optical ILA.

Note

We recommend that the 48-VDC facility DC source be equipped with a circuit protector rated at 10 A (–48 VDC) minimum, or as required by local code.

Note

We recommend that the 60-VDC facility DC source be equipped with a circuit protector rated at 5 A (–60 VDC) minimum, or as required by local code.

Note

For more information about power system redundancy, see Optical ILA Hardware Component Overview.

Optical ILA Power Supply LEDs

Each optical ILA power supply has two LEDs on the power supply faceplate. Figure 4 shows the location of the LEDs on an optical ILA AC power supply. Figure 5 shows the location of the LEDs on an optical ILA DC power supply.

Figure 4: AC Power Supply LEDs
AC Power Supply LEDs
  1
DC OK
  2
AC OK
Figure 5: DC Power Supply LEDs
DC Power Supply LEDs
  1
DC OUT OK
  2
DC IN OK

Use Table 1 and Table 2 to interpret the state of the power supply LEDs.

Table 1: Optical ILA AC Power Supply LED

Name

Color

State

Description

DC OK

Unlit

Off

There is no power to any of the power supplies.

Green

Blinking

The power supply is on standby mode (AC IN present).

On steadily

The power supply is on and operating correctly.

Red

On steadily

There is a power supply failure.

Blinking

No AC power to this power supply only.

AC OK

Unlit

Off

There is no power to any of the power supplies.

Green

On steadily

The power supply output is on and operating correctly.

On steadily

The power supply is on standby mode (AC IN present).

Red

On steadily

There is a power supply failure.

Blinking

No AC power to this power supply only.

Table 2: Optical ILA DC Power Supply LED

Name

Color

State

Description

DC OUT OK

Unlit

Off

There is no power to the power supplies.

Green

On steadily

The power supply is on and operating correctly.

Blinking

The power supply is on standby mode (DC IN present).

Red

On steadily

There is a power supply failure.

Blinking

There is no DC power to this power supply only.

DC IN OK

Unlit

Off

There is no power to the power supplies.

Green

On steadily

The power supply is on and operating correctly.

On steadily

The power supply is on standby mode (DC IN present).

Red

On steadily

There is a power supply failure.

Blinking

There is no DC power to this power supply only.

Optical ILA AC Power Specifications

Table 3 describes the AC power specifications for an optical ILA.

Table 3: AC Power Specifications for an Optical ILA

Item

Specification

AC input voltage

Operating range: 100–240 VAC

AC input line frequency

50–60 Hz

AC input current rating

3 A at 100–136 VAC

1.5 A at 180–266 VAC

Typical power consumption

75 W

Maximum power consumption

115.5 W

Optical ILA AC Power Cord Specifications

Detachable AC power cords are shipped with the chassis if you include them as part of your order. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source outlet that is standard for your geographical location.

Note

In North America, AC power cords must not exceed 14.75 feet (approximately 4.5 meters) in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and Canadian Electrical Code (CEC) Section 4-010(3). The cords that can be ordered for the optical ILA are in compliance.

Table 4 lists AC power cord specifications provided for each country or region.

Table 4: AC Power Cord Specifications for the Optical ILA

Country

Model Number

Electrical Specification

Plug Type

Australia

CBL-GP-JX-PWR-AU

250 VAC, 10 A, 50 Hz

AS/NZ 3112–1993

China

CBL-GP-JX-PWR-CH

250 VAC, 10 A, 50 Hz

GB2099.1 1996 and GB1002 1996 (CH1-10P)

Europe (except Italy and United Kingdom)

CBL-GP-JX-PWR-EU

250 VAC, 10 A, 50 Hz

CEE (7) VII

Italy

CBL-GP-JX-PWR-IT

250 VAC, 10 A, 50 Hz

IEC60884-1

Japan

CBL-GP-JX-PWR-JP

125 VAC, 12 A, 50 Hz or 60 Hz

JIS 8303 and 8306

North America

CBL-GP-JX-PWR-US

125 VAC, 10 A, 60 Hz

NEMA 5-15P

United Kingdom

CBL-GP-JX-PWR-UK

250 VAC, 10 A, 50 Hz

BS1363

Optical ILA DC Power Specifications

Table 5 describes the DC power specifications for an optical ILA.

Note

We recommend that the 48 VDC facility DC source be equipped with a circuit breaker rated at 10 A (–48 VDC) minimum, or as required by local code.

We recommend that the 60-VDC facility DC source be equipped with a circuit protector rated at 5 A (–60 VDC) minimum, or as required by local code.

Table 5: DC Power Specifications for the Optical ILA

Item

Specifications

DC input voltage

Operating voltage range: –40 VDC through –72 VDC

 

DC input current rating

6 A maximum

Typical power consumption

75 W

Maximum power consumption

115.5 W

Optical ILA DC Power Cable and Lugs Specifications

DC Power Cables

You must supply the DC power cables that meet the specifications in Table 6, or as required by the local code, laws, and standards.

Table 6: DC Power Cable Specifications

Cable

Specification

Minimum size cable

18-AWG (0.8 mm2) minimum

Maximum size cable

12-AWG (3.3 mm2)

Warning

For field-wiring connections, use copper conductors only.

Caution

Before optical ILA installation begins, a licensed electrician must attach a cable lug to the power cables that you supply. A cable with an incorrectly attached lug can damage the optical ILA.

Caution

You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the terminals on each power supply.

DC Power Connector

The accessory box shipped with the optical ILA includes the DC power connector that attaches to the terminal studs of each power supply.

Optical ILA Chassis Grounding Cable and Lug Specifications

For installations that require a separate grounding conductor to the chassis, the optical ILA must be adequately grounded before power is connected to ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements. To ground an optical ILA, connect a grounding cable to earth ground and then attach it to the chassis grounding points.

Warning

The device is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earthing terminal must be permanently connected to earth ground for installations that require a separate grounding conductor to the chassis.

Caution

Before device installation begins, a licensed electrician must attach a cable lug to the grounding cables that you supply. See Connecting the Optical ILA Grounding Cable. A cable with an incorrectly attached lug can damage the optical ILA.

Before connecting the optical ILA to earth ground, review the following information:

  • A protective earthing terminal bracket is required for connecting the optical ILA to earth ground. This two-holed bracket is attached to the rear of the optical ILA chassis and provides a protective earthing terminal for the device. The grounding points require two #10-32 UNF screws. The grounding points are spaced at 0.63 in. (16 mm).

  • The grounding lug required is a Panduit LCD6-14BH-L or equivalent (not provided). The grounding lug accommodates 14–10 AWG (2–5.3 mm²) stranded wire.

  • The grounding cable that you provide for an optical ILA must be the same size or heavier than the input wire of each power supply. Minimum recommendations are 14–10 AWG (2–5.3 mm²) stranded wire, 60° C wire, or as permitted by local code.