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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.
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).
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.
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.
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).
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.
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.
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.
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.
1 — DC OK | 2 — AC OK |
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.
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.
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) |
For field-wiring connections, use copper conductors only.
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.
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.
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.
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.