Installing the 1552 Series Access Points in Hazardous Locations

This chapter describes how to install the 1552 access point for hazardous locations and contains the following sections:

Mounting on a Wall or a Pole

This section provides instructions for the physical installation of your access points. Personnel installing the access point must understand wireless access points and bridging techniques and grounding methods.

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Caution blank.gif All installation methods for mounting an access point on any wall surface is subject to the acceptance of local jurisdiction.

Installation Option

The Cisco Aironet 1552 Series Outdoor Mesh Access Point for Hazardous Locations are installed using the optional Pole Mount installation kit, which is used for pole or wall installations

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Warningblank.gif Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030


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Warningblank.gif Installation of the equipment must comply with local and national electrical codes. Statement 1074


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Caution blank.gif To provide inline PoE, you must use the power injector (AIR- PWRINJ1500-2=) specified for the access point. Other power injectors, PoE switches, and 802.3af power sources do not provide adequate power, which might cause the access point to malfunction and cause over-current conditions at the power source. You must ensure that the switch port connected to the access point has PoE turned off.

caut.gif

Caution blank.gif The power injector is not intended to be installed in a hazardous locations environment. If a PoE injector is required, it must be located in a non-hazardous locations environment.

Refer to these sections for installation details:

Access Point Mounting Orientation

When mounting an access point on a horizontal or vertical surface, you must ensure that the access point is oriented with the LED indicators pointing down (see Chapter 2, “Pole Mount Installation”. This positioning allows the LEDs to be visible to someone on the ground below the access point.

You must also ensure the access point is mounted with the hinged access cover facing out.

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Noteblank.gif Omnidirectional antennas are vertically polarized and should be mounted vertically.


Mounting the Access Point on a Wall

The optional pole mount kit contains a mounting bracket for wall mounting. You can use the mounting bracket as a template to mark the positions of the mounting holes for your installation. You then install the mounting plate, and attach the access point when you are ready. Table 3-1 lists the material that you will need to provide in addition to the pole mount kit.

 

Table 3-1 Material Needed to Mount Access Point to a Vertical Wall

Materials Required
In Kit
  • Ground lug and screws (provided with access point)
  • Crimping tool for ground lug, Panduit CT-720 with
    CD-720-1 die (http://onlinecatalog.panduit.com)
  • Four M8 or 5/16 in. (31 mm) screws
  • Four wall anchors (specified for wall material)
  • Drill bit for wall anchors
  • Electric drill and standard screwdriver
  • #6-AWG ground wire
  • Shielded outdoor-rated Ethernet (CAT5e or better) cable
  • Grounding block
  • Grounding rod
  • 13-mm box-end wrench or socket set

Yes

No

No

No

No

No

No

No

No

No

No

caut.gif

Caution blank.gif The mounting surface, attaching screws, and optional wall anchors must be able to support a 50-lb
(22.7 kg) static weight.

The mounting bracket can be used as a template to mark the screw hole locations, or you can refer to the following diagram:

411462.jpg
note.gif

Noteblank.gif BCD is Bolt Circle Diameter.


1

8.49 inches (21.56 cm)

2

13.17 inches (33.45 cm)

3

4.09 inches (10.38 cm)

4

5.41 inches (13.74 cm)

5

2.88 inches (7.32 cm)

6

0.335 inches (0.851 cm)

7

0.350 inches (0.889 cm)

 

 

To mount the access point on a vertical wall, follow these instructions:


Step 1blank.gif Use the mounting bracket as a template to mark four screw hole locations on your mounting surface. See Figure 3-1 for the mounting bracket screw hole locations. You can optionally use the individual mounting holes or the mounting slots.

Figure 3-1 Mounting Bracket for Wall Mounting

 

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1

Access point quick mount notch

3

Mounting slots (allows bracket rotation)

2

Mounting holes

 

 

Step 2blank.gif Use four customer-supplied screws and optional screw anchors to attach the mounting plate to the mounting surface.

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Noteblank.gif If necessary, use suitable screw anchors and an exterior-grade plywood backboard to mount the access point to stucco, cement, or drywall.


Step 3blank.gif Screw a M8 x16 bolt in the top support bolt hole on each side the access point (see Figure 3-2). Do not screw the bolt all the way in; leave approximately a 0.25 inch (0.635 cm) space.

Figure 3-2 Location of Access Point Top Support Bolt Hole

 

331879.eps

 

1

M8 x16 bolt (supplied with pole mount kit)

3

Ground lug location (M4 x.7)

2

M8 x16 bolt (supplied with pole mount kit)

 

 

Step 4blank.gif Position the two bolts on the access point into the quick mount notches on each side of the mounting bracket (see Chapter 2, “Pole Mount Installation”). Ensure that the hinged door is facing out.

Step 5blank.gif Screw a M8 x16 bolt (with flat and lock washers) into the second bolt hole on each side of the access point.

Step 6blank.gif Ensure that the front of the access point is vertical, and tighten the four bolts to 13 to 15 ft lbs
(17.6 to 20.3 Nm).

Step 7blank.gif When using the Cisco Aironet Dual-Band Omnidirectional Antennas, connect them to the access point as shown in Figure 3-2. Hand-tighten the antennas to the access point.

Step 8blank.gif Continue with the “Grounding the Access Point (all models)” section and the “Powering the Access Point” section.


 

Mounting the Access Point on a Pole

When installing an access point on a vertical pole, mast, or a streetlight pole, you should use the optional Cisco pole mount kit. The kit supports metal, wood, or fiberglass poles from 2 to 16 inches in diameter.

Assembling the Pole Clamp Bracket and the Mounting Bracket

When installing an access point on a pole, mast, or a streetlight, you should use the optional Cisco pole mount kit. The kit supports metal, wood, or fiberglass poles from 2 to 16 inches in diameter.

The pole mount kit contains several parts that you must assemble prior to mounting on a pole. First you need to assemble two strap brackets on the pole clamp bracket that are positioned for the pole diameter you are using to mount the access point. Figure 3-3 illustrates the pole diameter indicators and bolt holes on the pole clamp bracket.

Figure 3-3 Pole Clamp Bracket Adjustment Hole Locations

 

231407.tif

 

1

Pole size indicators

  • 2 to 6 inches (5.08 cm to 15.24 cm)
  • 6 to 11 inches (15.24 cm to 27.94 cm)
  • 11 to 16 inches (27.94 cm to 40.64 cm)

2

Bolt holes for pole diameters

(11 to 16 inches (27.94 cm to 40.64 cm) indicated)

To assemble the pole clamp bracket, follow these steps:


Step 1blank.gif Position the strap brackets on the pole clamp bracket for the pole diameter you are using and secure each strap bracket with two M8 x16 bolts (with lock washers) (see Figure 3-4). Tighten the bolts to 13 to 15 ft lbs (17.6 to 20.3 Nm).

Figure 3-4 Assembled Pole Clamp Bracket and Strap Brackets

 

231406.tif

 

1

M8 x1.25x16 bolts (with lock washers)

3

Strap bracket (shown positioned for 11 to 16 inch diameter pole)

2

Pole clamp bracket

 

 

Step 2blank.gif Screw the M8 nut onto the pole clamp bracket support bolt, and tighten just enough to prevent the bolt from falling off.

Step 3blank.gif Go to the “Pole Mounting” section.


 

Pole Mounting

The access point can be installed where power is available, without the need for a wired LAN connection. The access point uses intelligent wireless routing that is based on the Adaptive Wireless Path Protocol (AWPP). AWPP enables a remote access point to dynamically optimize the best route to the wired LAN network using another access point.

The 1552 access point uses the 5 GHz radio for the Mesh backhaul and connections. The 2.4 GHz radio is used for local wireless client access.

To mount your access point on a vertical pole or streetlight pole, you need to install two metal bands around the pole to support the access point. This process requires extra tools and material not provided in the pole mount kit (see Table 3-2 ).

 

Table 3-2 Material Needed to Mount Access Point on a Pole

Mounting Method
Materials Required
In Kit

Vertical or streetlight pole

  • Two 0.75-in (1.9 cm) stainless steel bands
  • Banding strap tool (BAND IT) (Cisco AIR-BAND-INST-TL=)
  • Ground lug (provided with access point)
  • Crimping tool for ground lug, Panduit CT-720 with CD-720-1 die (http://onlinecatalog.panduit.com)
  • #6 AWG ground wire

Yes

No

Yes

No

No

To mount the access point onto a vertical pole or streetlight pole, follow these steps:


Step 1blank.gif Select a mounting location on the pole to mount the access point. You can attach the access point to any pole from 2 to 16 inch (5.1 to 40.6 cm) in diameter.

note.gif

Noteblank.gif If you will be using a streetlight power tap adapter, position the access point within 3 ft (1 m) of the outdoor light control.


Step 2blank.gif For poles larger than 3.5 inch (8.9 cm), mount the pole clamp bracket assembly to a pole (see Figure 3-5) using two metal straps. Following the instructions provided with the banding strap tool (BAND IT) (AIR-BAND-INST-TL=), loop each metal strap twice through the slots on the strap bracket.

caut.gif

Caution blank.gif Do not place the metal straps in the large open area between the pole clamp bracket and the strap brackets, because this does not properly secure the access point.

Figure 3-5 Clamp Bracket Assembly Mounted on Poles Larger than 3.5 inch (8.9 cm)

 

231418.tif

 

1

Pole clamp bracket

3

Metal mounting strap

2

Strap slot in strap bracket

4

Pole

Step 3blank.gif For pole diameters of 3.5 inch (8.9 cm) or less, mount the pole clamp bracket assembly to a pole using two metal straps looped through the space between the pole clamp bracket and the strap brackets (see Figure 3-6) to provide maximum holding strength for extreme environments. Following the instructions provided with the banding strap tool (BAND IT) (AIR-BAND-INST-TL=), loop each metal strap twice.

Figure 3-6 Metal Strap Open Space for 3.5 inch (8.9 cm) and Smaller Poles

 

231518.tif

 

1

Metal strap open space

caut.gif

Caution blank.gif Do not place the metal straps in the large open area between the pole clamp bracket and the strap brackets because this does not properly secure the access point.

Step 4blank.gif Position the pole clamp bracket on the pole as needed before tightening the metal bands.

note.gif

Noteblank.gif When the metal bands are tightened to the full tension, the pole clamp bracket cannot be adjusted unless the metal bands are cut or disassembled.


Step 5blank.gif Tighten the metal bands using the banding strap tool (BAND IT) (Cisco AIR-BAND-INST-TL=) by following the operating instructions in the box with the tool. Ensure that the metal bands are as tight as possible.

Step 6blank.gif Place the mounting bracket onto the pole clamp bracket support bolt (see Figure 3-7).

Step 7blank.gif For vertical poles, position the mounting bracket as shown in Figure 3-7. For horizontal streetlight poles, rotate the mounting bracket 90o from the position shown in Figure 3-7.

Step 8blank.gif Install four M8 x16 bolts (with flat and lock washers) into the bolt holes.

Figure 3-7 Screw Hole Locations on the Mounting Bracket and Pole Clamp Bracket Assembly

 

281940.eps

 

1

Pole clamp bracket assembly

3

Bolt holes

2

Access point support bolt
(M8 flange nut not shown)

4

Mounting bracket

Step 9blank.gif Hand-tighten the bolts and the nut (do not overtighten).

Step 10blank.gif Adjust the top edge of the mounting bracket until it is horizontal and tighten the bolts and the flange nut (see Figure 3-7) to 13 to 15 ft lbs (17.6 to 20.3 Nm).

note.gif

Noteblank.gif The mounting bracket can be adjusted up to 45o to compensate for tilted horizontal streetlight poles.


Step 11blank.gif Screw a M8 x16 bolt (without a flat or lock washer) in the top support bolt hole on each side the access point (see Figure 3-8). Do not screw the bolt all the way in. Leave a gap of approximately 0.25 inch
(0.635 cm).

Figure 3-8 Location of Access Point Top Support Bolt Holes

 

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1

Ground lug screw holes location. M4x.7

3

Second M8 x16 bolt hole location

2

M8 x16 bolt hole (bolts are supplied with pole mount kit; install without flat or lock washers)

 

 

Step 12blank.gif Position the two bolts on the access point into the access point quick-mount notch on the mounting bracket (see Figure 3-9).

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Noteblank.gif The access point should be positioned with the LEDs on the bottom to allow viewing from the ground and with the hinged cover facing out.


Figure 3-9 Access Point Hanging in Mounting Bracket

 

255256.eps

 

Step 13blank.gif Screw a M8 x16 bolt (with flat and lock washers) into the second bolt hole on each side of the access point (see Figure 3-9).

Step 14blank.gif Ensure that the front of the access point is vertical, and tighten the four bolts to 13 to 15 ft lbs
(17.6 to 20.3 Nm).

Step 15blank.gif When using the Cisco Aironet Dual-Band Omnidirectional Antennas, connect them to the access point as shown in Figure 3-9. Hand-tighten the antennas to the access point.

 

Step 16blank.gif Continue with the “Grounding the Access Point (all models)” section and the “Powering the Access Point” section.


 

Working with the Access Point Hinged Cover

This section details opening and closing the protective cover.

Opening the Access Point Hinged Cover

caut.gif

Caution blank.gif The hinged cover must not be opened unless the area is considered non-hazardous and the AP has been powered off.

You need to open the access point hinged cover to access the AC entry terminal block or 24 VDC terminal block, and when you are installing fiber-optic SFP module and fiber cable take-up reels.

To open the access point hinged cover, follow these steps:


Step 1blank.gif Use 0.5-in (13-mm) box-end wrench or socket set to unscrew and remove the four bolts on the front cover of the unit. Only unscrew the hinge bolts about 2 turns until they are easily turned by hand, do not remove the bolts on the hinge (Figure 3-10).

Step 2blank.gif The cover is hinged on the bottom. Carefully open the cover and remove the cover.

note.gif

Noteblank.gif If the cover does not open easily, carefully loosen the hinge bolts again.


Figure 3-10 Access Point Front View of Hinged Cover

 

255250.eps

 

1

M8 x32 bolts

2

Cover hinge M8 x32 bolts


 

Closing the Access Point Hinged Cover

To close the access point cover, follow these steps:


Step 1blank.gif When closing the access point cover, be careful not to pinch internal wires.

Step 2blank.gif Carefully position the cover flush with all sides of the access point, then slowly hand-tighten each bolt.

Step 3blank.gif When all bolts are hand-tightened, use a 13-mm closed-end wrench or socket to partially tighten the bolts in the tightening sequence shown in Figure 3-11. Tighten each bolt to 3 to 4 ft lbs (0.34 to 0.45 Nm).

Step 4blank.gif Repeat Step 3 using the same tightening sequence to fully tighten each bolt to 6 to 7 ft lbs
(0.68 to 0.79 Nm).

Figure 3-11 Hinged Cover Bolt Tightening Sequence

 

255257.eps

 

1 - 6

Tighten the bolts in the numeric order shown, starting with 1.


 

Grounding the Access Point (all models)

The access point must be grounded before connecting power.

warn.gif

Warningblank.gif This equipment must be externally grounded using a customer-supplied ground wire before power is applied. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 366


warn.gif

Warningblank.gif Installation of the equipment must comply with local and national electrical codes. Statement 1074


In all outdoor installations and when powering the access point with AC power, you must follow these instructions to properly ground the case:


Step 1blank.gif If using insulated 6-AWG copper ground wire, strip the insulation as required for the grounding lug.

Step 2blank.gif Use the appropriate crimping tool to crimp the bare 6-AWG copper ground wire to the supplied grounding lug (Panduit PLCD6-10A-L).

note.gif

Noteblank.gif The grounding lug and hardware used must comply with local and national electrical codes.


Step 3blank.gif Open the electrical joint compound (supplied), and apply a liberal amount over the metal surface where the ground strap screw holes are located (see Figure 3-8).

Step 4blank.gif Connect the grounding lug to the access point grounding screw holes (see Figure 3-8) using the supplied two Phillips head screws (M4 x10 mm) with lock washers. Tighten the grounding screw to
22 to 24 in. lbs (2.49 to 2.71 Nm).

Step 5blank.gif If necessary, strip the other end of the ground wire, and connect it to a reliable earth ground such as a grounding rod (see Chapter 2, “Components in a Typical Access Point Installation”).

Installation Details for the 1552H Access Point

note.gif

Noteblank.gif There are differences in the port adapter sizes and threading between the different models. Be sure to review the connector details for the access point model you are installing in Connectors.


The fiber-optic kit (AIR-1520-FIB-REEL=) enables the 1552H access point to support fiber-optic network connections. The kit contains these parts:

  • Eight screws (#2-56 x.75 in) to attach reels
  • Two small take-up reels
  • Two large take-up reels
  • Liquid-tight adapter(s)—Accepts a cable diameter of 0.20 to 0.35 inches (0.51 to 0.89 cm)
caut.gif

Caution blank.gif The liquid-tight adapter(s) supplied in the kit AIR-1520-FIB-REEL= are IP68/69 certified with.200 to.350 diameter cables but not ATEX certified or hazardous locations compliant. The installer must use cable glands/adapters appropriate to the installation.

note.gif

Noteblank.gif The SFP module is a separate orderable item. Refer to the ordering guide for applicable SFP options.


warn.gif

Warningblank.gif Class 1 laser product. Statement 1008


note.gif

Noteblank.gif You need a customer-supplied outdoor-rated fiber-optic cable with an LC connector. The cable diameter must be 0.20 to 0.35 in. (5.1 to 8.9 mm). The diameter of the sheathing surrounding each individual fiber must be 0.040 in. (1.0 mm) or less.


Connecting a Fiber-Optic Cable to the 1552H Access Point

note.gif

Noteblank.gif Please refer to the Declarations of Conformity and Regulatory Information when the AIR-CAP1552H-Q-K9 (POE input configuration only) will be installed in an explosive area in Japan.


To connect a fiber-optic cable to the 1552H access point, follow these steps:


Step 1blank.gif Ensure that all power sources have been disconnected from the access point.

warn.gif

Warningblank.gif This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028


Step 2blank.gif Open the hinged cover (see the “Opening the Access Point Hinged Cover” section for instructions).

Step 3blank.gif Place the two large reels with the small reels on top as shown in Figure 3-12.

Step 4blank.gif Align the screw holes in the large and small reels, and insert four attachment screws in each of the reel pairs. Tighten the screws to 3 to 4 in. lbs (0.34 to 0.45 Nm).

Step 5blank.gif Remove the plug from the end of the SFP module, and insert the module into the SFP receptacle (see Figure 3-12).

Figure 3-12 Fiber-Optic Cable Components (1552H)

 

411406.jpg

 

1

Fiber reels (large reel with small reel on top, 4 screws for each reel assembly)

2

SFP module slot

3

Fiber-optic connector port (1552H) Hole size is PG13.5

Step 6blank.gif Loosen the round end of the liquid-tight connector by turning counterclockwise, but do not remove (see Figure 3-13).

Figure 3-13 Liquid -Tight Adapter

 

231417.tif

 

1

Thread end

2

Round end

Step 7blank.gif Carefully screw the threaded end of the adapter into the access point and hand-tighten.

Step 8blank.gif Use an adjustable wrench, the 22 mm socket, or the Sealcon S-2200-WR wrench to tighten the threaded end of the adapter to 6 to 7 ft lbs (8.1 to 9.5 Nm).

Step 9blank.gif Carefully remove approximately 1 to 2 ft (30.5 cm) of the external jacket from the fiber-optic cable, exposing the inner strand.

Step 10blank.gif Carefully insert the fiber-optic LC cable connector into the rounded end of the liquid-tight adapter (see Figure 3-13), and push through the adapter.

Step 11blank.gif Wrap excess fiber-optic cable around the take-up reels in a figure eight (8) pattern.

Step 12blank.gif Insert the fiber-optic LC cable connector into the SFP module.

Step 13blank.gif Use an adjustable or open-end wrench to tighten the round end of the adapter to 2.7 to 3.2 ft lbs
(3.66 to 4.34 Nm).

Step 14blank.gif Close the hinged cover (see the “Closing the Access Point Hinged Cover” section).


 

Installation Details for the 1552SA and 1552SD Access Point

note.gif

Noteblank.gif There are differences in the port adapter sizes and threading between the different models. Be sure to review the connector details for the access point model you are installing in Connectors.


The fiber-optic kit (AIR-1550S-FIB-KIT=) enables the 1552SA and 1552SD access points to support fiber-optic network connections. The kit contains these parts:

  • Two take-up reels
  • One bracket to support the reels
  • Eight screws (#2-56 x.31 in) to attach the reels
  • Two screws (#4-40 x.25 in) to attach the bracket
  • One grommet
  • One port adapter (5/8-24 to 1/2-14 NPT).
note.gif

Noteblank.gif The adapter in this kit is EX compliant with the 1552S models.


The installation may require the use of junction boxes which have Ex certifications. Cisco does not supply these, but recommends either the GRT50 or ERT50 models as shown in Figure 3-14.

Figure 3-14 Junction Boxes

 

420464.jpg
note.gif

Noteblank.gif The SFP module is a separate orderable item. Refer to the ordering guide for applicable SFP options.


warn.gif

Warningblank.gif Class 1 laser product. Statement 1008


note.gif

Noteblank.gif You need a customer-supplied outdoor-rated fiber-optic cable with an LC connector. The cable diameter must less than 0.40 in. (10.0 mm). The diameter of the sheathing surrounding each individual fiber must be less than 0.040 in. (1.0 mm).


Connecting a Fiber-Optic Cable to the 1552SA or 1552SD Access Point

note.gif

Noteblank.gif If a fiber installation kit is required for the installation, please ensure you order the hazardous locations compliant kit, AIR-1550S-FIB-KIT, and follow the instructions on installing the adapter below.


To connect a fiber-optic cable to the 1552SA or 1552SD access point, follow these steps:


Step 1blank.gif Ensure that all power sources have been disconnected from the access point.

warn.gif

Warningblank.gif This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028


Step 2blank.gif Open the hinged cover (see the “Opening the Access Point Hinged Cover” section for instructions).

Step 3blank.gif Align the reel bracket to the AP and attach via two screws (#4-40 x.25 in). Tighten the screws to 5.5 to 6.0 in. lbs (0.62 to 0.68 Nm). (See Figure 3-15.)

Step 4blank.gif Align each of the two reels to the installed bracket. Attach each reel to the bracket with four screws (#2-56 x.31 in). Tighten the screws to 3 to 4 in. lbs (0.34 to 0.45 Nm). (See Figure 3-15.)

Figure 3-15 Fiber-Optic Cable Kit Components (1552SD shown)

 

333826.eps

 

1

Reel bracket

2

Two screws for attaching reel bracket to AP (#4-40 x.25 in)

3

Two fiber reels

4

Eight screws, four to attach each reel to bracket (#2-56 x.31 in)

5

1/2-NPT port adapter from the kit.

Do not use in hazardous location deployments.

6

SFP module slot

note.gif

Noteblank.gif Fiber and power can both be routed through the AC/DC port. If fiber and power are coming from the same area externally, route both through the AC/DC port. If fiber and power are coming from different areas externally, route them through one of the recommended junction boxes.
The rest of this procedure will show routing through an ETRT50 junction box.


Step 5blank.gif Attach the junction box to the chassis with a 1/2 NTP Male to Male connector. See Figure 3-16 and Figure 3-17.

Figure 3-16 ERT50 Junction Box Assembly

 

1552hz_ch3-25.jpg

 

1

ERT50 Junction Box

2

AC/DC Port

3

5/8-24 Port

 

Step 6blank.gif Route the power cable and the fiber cable through the junction box using Figure 3-17 as an example.

Figure 3-17 Routing Detail

 

420466.jpg

 

1

ERT50 Junction Box

2

ERT50 Junction Box Cover (removed)

3

1/2NPT

4

Power Cable

5

Fiber Cable

6

1/2NPT

7

1/2NPT

8

1/2NPT Male to Male

Step 7blank.gif Complete the connections inside the 1552 as shown in Figure 3-18.

Figure 3-18 Inside Connectivity

 

420467.jpg

 

1

Duplex LC Fiber

2

AC/DC Entry Port

3

Power Cable

4

SCTE Port (shown for orientation purposes)

note.gif

Noteblank.gif When installing the ½ NPT pipe or cable gland on the AP, the use of a thread sealant (for example, Loctite® 565) is required.


Step 8blank.gif Wrap excess fiber-optic cable around the take-up reels using industry-standard methods and cable routing.

Step 9blank.gif Insert the fiber-optic LC cable connector into the SFP module.

Step 10blank.gif Secure fiber cable inside enclosure using appropriate methods to avoid fiber damage.

 

Step 11blank.gif Close the cover to the junction box and the hinged cover (see Closing the Access Point Hinged Cover).


 

To complete the connectivity to a power source, go to Powering the Access Point.

Installation Details for the 1552WU Access Point

note.gif

Noteblank.gif There are differences in the port adapter sizes and threading between the different models. Be sure to review the connector details for the access point model you are installing in Connectors.


note.gif

Noteblank.gif The 1552WU does not support Fiber, therefore, there are no separate installation details for this model.


If installing the 1552WU with a WirelessHART antenna, read the WirelessHART Gateway Configuration before continuing.

Using the Reset Button

The access point has a reset button located on the bottom of the unit (see Figure 3-19). The reset button is recessed in a small hole that is sealed with a screw and a rubber gasket. The reset button can be used to perform these functions:

  • Reset the access point—Press the reset button for less than 10 seconds.
  • Disable battery backup power—Press the reset button for more than 10 seconds.

Figure 3-19 Reset Button Location - Models AIR-CAP1552SA/SD-x-K9 and AIR-CAP1552H-x-K9

 

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1

Reset button

caut.gif

Caution blank.gif Do not access the reset button in a Hazardous Location.

Rebooting the Access Point

To reboot (power cycle) the access point, follow these steps:


Step 1blank.gif Use a Phillips screwdriver to remove the reset button screw (Figure 3-19). Be careful not to lose the screw.

Step 2blank.gif Use a straightened paperclip, and push the reset button for less than 10 seconds. This action causes the access point to reboot (power cycle), all LEDs to turn off for approximately 5 seconds, and then the LEDs to reactivate.

Step 3blank.gif Replace the reset button screw and use a Phillips screwdriver to tighten to 22 to 24 in. lbs
(2.49 to 2.71 Nm).


 

Powering the Access Point

warn.gif

Warningblank.gif Explosion Hazard—The area must be known to be nonhazardous before installing, servicing, or replacing the unit. Statement 1082


note.gif

Noteblank.gif Please refer to the Declarations of Conformity and Regulatory Information when the AIR-CAP1552H-Q-K9 (POE input configuration only) will be installed in an explosive area in Japan.


The access point can be powered by one of these methods:

1552H and 1552SA

100 to 240 VAC, 50-60Hz.

1552H

Power-over-Ethernet (PoE)—56 VDC power injector (AIR-PWRINJ1500-2=)

1552SD and 1552WU

24 VDC

note.gif

Noteblank.gif In all cases above, the AC branch circuit powering the access point must be limited to no more than 20A from the over-protection device supplied by the user. This branch power protection must meet all local and national electrical codes.


The 1552 access point for hazardous locations can be connected to more than one power source. The access point detects the available power sources and switches to the preferred power source using the following priority:

1.blank.gif AC power

2.blank.gif DC power

3.blank.gif Power over Ethernet

Connecting a 1552H Series Power Injector

The power injector provides 56 VDC to the access point over the Ethernet cable and supports a total end-to-end Ethernet cable length of 100 m (328 ft) from the switch to the access point.

note.gif

Noteblank.gif The power injector is not intended to be installed in a hazardous locations environment. If a PoE injector is required, it must be located in a non-hazardous location environment.


note.gif

Noteblank.gif The 1552SA/SD and 1552WU do not support PoE In.


note.gif

Noteblank.gif The Ethernet cable from the power injector to the access point (PoE In port) must be at least 10 ft (3.1 m) in length.


note.gif

Noteblank.gif The PoE Out port is disabled when the access point is powered by the power injector.


When your access point is powered by an optional power injector, follow these steps to complete the installation:


Step 1blank.gif Before applying PoE to the access point, ensure that the access point is grounded (see the “Grounding the Access Point (all models)” section).

Step 2blank.gif Review Chapter 2, “Pole Mount Installation” to identify the components needed for the installation.

note.gif

Noteblank.gif It is recommended to install the injector in its own IP67 enclosure such as a Hoffman box, since the PoE injector is not weather proof.


Step 3blank.gif Connect a CAT5e or better Ethernet cable from your wired LAN network to the power injector.

warn.gif

Warningblank.gif To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord. Statement 1023


Use only the 1500 power injector (AIR-PWRINJ1500-2=) for the access point. This power injector is designed to meet the power requirements of the access point and is a listed Class 2 limited power source (LPS).

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Noteblank.gif The installer is responsible for ensuring that powering the access point from this type of power injector is allowed by local and/or national safety and telecommunications equipment standards.


tip.gif

Tip To forward bridge traffic, add a switch between the power injector and controller. Refer to the Cisco Wireless Mesh Access Points, Design and Deployment Guide, Release 7.0 for more information.


Step 4blank.gif Ensure that the antennas are connected and that a ground is attached to the access point before you apply power to the access point.

Step 5blank.gif Connect a shielded outdoor-rated Ethernet (CAT5e or better) cable between the power injector and the PoE In connector of the access point (see Figure 3-20).

Step 6blank.gif Connect the Ethernet cable to the access point PoE In port (see “Connecting an Ethernet Cable to the Access Point (all models)” section).

note.gif

Noteblank.gif When a 1552H access point is powered by PoE, the PoE Out port is not active.


Step 7blank.gif Continue with the “What to Do Next” section.


 

Connecting an Ethernet Cable to the Access Point (all models)

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Noteblank.gif Please refer to the Declarations of Conformity and Regulatory Information when the AIR-CAP1552H-Q-K9 (POE input configuration only) will be installed in an explosive area in Japan.


The following tools and materials are required:

  • Shielded outdoor-rated Ethernet (CAT5e or better) cable with 0.2 to 0.35 in. (0.51 to 0.89 cm) diameter
note.gif

Noteblank.gif The Ethernet cable from the power injector to the access point must be at least 10 ft
(3.05 m) long. The PoE Out port is disabled when the access point is powered by the power injector.


  • RJ-45 connector and installation tool
  • Adjustable wrench

To connect the shielded Ethernet cable to the access point, follow these steps:


Step 1blank.gif Disconnect power to the power injector, and ensure all power sources to the access point are turned off.

warn.gif

Warningblank.gif This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028


Step 2blank.gif Ensure a 6 AWG ground wire is connected to the access point (see the “Grounding the Access Point (all models)” section).

Step 3blank.gif Use an adjustable wrench, a 22-mm socket, or the Sealcon S-2200-WR wrench to remove the Ethernet connector plug from the access point (see Figure 3-20 for the location).

Figure 3-20 Location of Ethernet Liquid-Tight Adapters (Only Models AIR-CAP1552SA/SD-x-K9, AIR-CAP1552H-x-K9, and AIR-CAP1552WU-A-K9)

 

255260.eps

 

1

ETH port (1552SA/1552SD/1552WU) or PoE In port (1552H) Hole size PG13.5

2

PoE Out port Hole size PG13.5

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Noteblank.gif For information on data cable entry, refer to Figure 1-1


Step 4blank.gif Loosen the round end of the liquid-tight adapter by turning counterclockwise, but do not remove (see Figure 3-21).

Figure 3-21 Liquid-tight Adapter

 

231417.tif

 

1

Thread end

2

Round end

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Caution blank.gif The liquid-tight adapter(s) supplied in the kit AIR-1520-FIB-REEL= are IP68/69 certified with.200 to.350 diameter cables but not ATEX certified or hazardous locations compliant. The installer must use cable glands and/or adapters appropriate to the installation.

Step 5blank.gif Insert the unterminated end of the Ethernet cable into the round end of the liquid-tight adapter (see Figure 3-21), and pull several inches of cable through the adapter.

Step 6blank.gif Install an RJ-45 connector on the unterminated end of the Ethernet cable using your Ethernet cable installation tool.

warn.gif

Warningblank.gif To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord. Statement 1023


Step 7blank.gif Carefully insert the RJ-45 cable connector into the Ethernet port opening on the access point, and connect to the internal Ethernet connector (see Figure 3-22).

Figure 3-22 Inserting RJ-45 Connector into the Ethernet Port Opening in Case

 

231413.tif

 

1

Liquid-tight adapter (PG 13.5 thread size)

3

RJ-45 connector

2

Ethernet port opening in access point case

4

Shielded outdoor-rated Ethernet (CAT5e or better) cable

Step 8blank.gif Slide the liquid-tight adapter towards the access point, and screw the threaded end of the adapter into the access point, and hand-tighten.

Step 9blank.gif Use an adjustable wrench, a 22-mm socket, or a Sealcon S-2200-WR wrench to tighten the threaded end of the adapter to 6 to 7 ft lbs (8.1 to 9.5 Nm).

Step 10blank.gif Use an adjustable wrench and tighten the round end of the adapter to 2.7 to 3.2 ft lbs (3.66 to 4.34 Nm).

Step 11blank.gif Ensure that the antennas are connected to the access point before you apply power to the access point.

Step 12blank.gif Route your Ethernet cable, and cut off any excess cable.

Step 13blank.gif Install an RJ-45 connector on the unterminated cable end, and insert it into the power injector. For typical installation components, see Chapter 2, “Components in a Typical Access Point Installation”.

Step 14blank.gif Turn on power to the power injector.


 

Connecting a 24 VDC Power Cable to the Access Point

caut.gif

Caution blank.gif The DC branch circuit powering the access point must be limited to no more than 10A from the over-protection device supplied by the user. This branch power supplemental protection and all connecting conduit, must meet all local and national electrical codes.

To route and connect the 24 VDC power cable to the 1552SA/1552SD or 1552WU access point model, follow these steps:


Step 1blank.gif Open the access point hinged cover. See the “Opening the Access Point Hinged Cover” section for instructions.

Figure 3-23 24 VDC Power Installation—Model AIR-CAP1552SD-A-K9 and AIR-CAP1552WU-A-K9

 

333238.eps

 

1

Terminal block

2

Customer-supplied harness

3

Customer-supplied 1/2” NPT Pipe (North American/ATEX) or sheathed cable (ATEX only). The installer/integrator is responsible for supplying the appropriate certified components as part of the overall designed system and must maintain the access point environmental integrity of IP67 rating.

Step 2blank.gif Route the 24 VDC power cable through the 1/2-NPT port.

Step 3blank.gif Use a wire stripper tool to remove the insulation from each wire. Remove only enough wire to provide adequate crimp on to ring terminals (Cisco supplied).

Step 4blank.gif Remove terminal strip screw and square washer for connection labeled “RTN”. Connect DC return line to terminal strip location labeled “RTN”. Tighten terminal strip screw to secure ring terminal and wire.

Step 5blank.gif Remove terminal strip screw and square washer for connection labeled “+24 VDC IN”. Connect +24 VDC hot line to terminal strip location labeled “+24 VDC IN”. Tighten terminal strip screw to secure ring terminal and wire.

Step 6blank.gif Secure DC input cord to wire tie anchor adjacent to terminal strip.

Step 7blank.gif Check your work.

Step 8blank.gif Close the access point hinged cover. See the “Closing the Access Point Hinged Cover” section for details.


 

Connecting Ground and AC Power

note.gif

Noteblank.gif When you install the conduit, be sure to comply with the local electrical codes for your area.


Refer to “Power Consumption Budget for the AIR-CAP1552H-x-K9, AIR-CAP1552SA/SD-x-K9, and AIR-CAP1552WU-A-K9 Access Point Configurations” section for Power distribution details.

To route and connect the ground and AC power cabling to the 1552H or 1552SA access point model, follow these steps:

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Warningblank.gif When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046


caut.gif

Caution blank.gif Always install the ground wire before connecting all power leads.


Step 1blank.gif Open the access point hinged cover. See the “Opening the Access Point Hinged Cover” section for instructions.

Step 2blank.gif Use a Phillips head screwdriver to loosen the three captive screws that secure the AC entry module cover. (Figure 3-24).

Figure 3-24 AC Power Installation—Model AIR-CAP1552H-A-K9

 

343734.eps

 

1

Customer-supplied 1/2” NPT Pipe (North American/ATEX) or sheathed cable (ATEX only).

4

AC Entry Cover

  • Loosen the captive screws (3x) to open cover.
  • Reattach after harness has been installed.
2

Customer-supplied harness

5

Terminal block

3

Attach GND wire to terminal ring. Attach terminal ring to chassis as shown.

 

 

 

Notes

1

The installer/integrator is responsible for supplying the appropriate certified components as part of the overall designed system and must maintain the access point environmental integrity of IP67 rating.

2

The water-tight gland device selected by the installer/integrator must be equal to or greater (better) than the specifications listed for device referenced as Sealcon CD-13AR-EX with a Buna-N O-ring.

3

The torque specification for water-tight glands are 6 to 7 ft-lbs (8.1 to 9.5 N.m).

 

Step 3blank.gif Remove the cover and set it aside.

Step 4blank.gif Route the AC power cable through the 1/2-NPT port.

Step 5blank.gif Use a wire stripper tool to remove the insulation from each wire. Remove only enough wire to provide a solid connection in the terminal block. The hot wires should have no bare wire exposed after the connection is made.

Step 6blank.gif Insert the ground wire into the provided ground lug and use a crimping tool to secure the connection.

Step 7blank.gif Install the ground lug and tighten the connection with a Phillips screwdriver. To prevent stripping the screw threads, do not overtighten.

Step 8blank.gif Insert each hot wire into the AC entry terminal block.

Step 9blank.gif Use a Phillips screwdriver to tighten the terminal block set screws to secure the wires in the terminal block.

Step 10blank.gif Verify that no bare wire is exposed. If wire is exposed, remove it from the terminal block, adjust the length, and reinstall.

Step 11blank.gif Check your work.

Step 12blank.gif Reinstall the AC entry module top cover and tighten the captive screws. Do not overtighten.

Step 13blank.gif Close the access point hinged cover. See the “Closing the Access Point Hinged Cover” section for details.

Step 14blank.gif Install the Ethernet backhaul cable. See the next section for instructions.


 

Performing Maintenance

The access point requires minimal periodic or preventive maintenance as it has no moving parts, filters, lubricants, or mechanical contact components. However, when installed in a hazardous location, periodic inspections should be conducted in order to ensure that the access point is operating satisfactory. This section provides information about performing maintenance on an access point installed in a hazardous location.

Additional maintenance information can be found in Chapter 4, “Troubleshooting” and the Troubleshooting a Mesh Network Guide. The troubleshooting document is available at cisco.com at the following URL:

http://www.cisco.com/en/US/docs/wireless/access_point/1520/troubleshooting/guide/TrbleshtMesh.html

warn.gif

Warningblank.gif Do not disconnect connections to this equipment unless power has been removed or you have verified that the area is nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product. Substitution of components may impair suitability for Class I, Zone 2, Division 2. Statement 1062


warn.gif

Warningblank.gif If you connect or disconnect the console cable with power applied to the unit or any device on the network, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

To verify unit operation, perform POST on the device in a nonhazardous location before installation. Statement 1080


warn.gif

Warningblank.gif When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046


Removing the Access Point from Service

When removing an access point from service, make sure you remove power from the access point before opening the cover and disconnecting the AC input wiring. When removing the AC wiring, the ground connection should be the last to be disconnected.

Conducting Periodic Inspections

The access point should be inspected periodically to ensure normal and airtight operation in the hazardous location environment. Table 3-3 lists the inspection routines and their periodicity.

Table 3-3 Periodic Inspection Table

Inspection Routine
Periodicity

Inspect O-ring seals and exterior electrical connections for aging, corrosion, and low ground resistance.

Every 3 years

Inspect cover and liquid-tight adapter gaskets for airtightness.

Every 5 years

Conducting Periodic Cleaning

The access point is designed to not require periodic cleaning.

What to Do Next

When you power up a MAP that is not connected to a wired Ethernet, fiber-optic, or cable network to the controller, the access point uses the Cisco Adaptive Wireless Path Protocol (AWPP) to bind to another mesh access point (MAP) with the best path to a root access point (RAP) connected to the wired network to a controller. The access point sends a discovery request when powered up. If you have configured the access point in the controller correctly, the controller sends back a discovery response to the access point. When that happens, the access point sends out a join request to the controller, and the controller responds with a join confirmation response. Then the access point establishes a Control And Provisioning of Wireless Access Points (CAPWAP) connection to the controller and gets the shared secret configured on the controller.

Refer to the Cisco Wireless LAN Controller Configuration Guide for more information on configuring, monitoring, and operating your access points.