Replacing The Lithium Battery; Using Axlink Communication - AMX AXB-DMX512 Installation Manual

The table below lists wire sizes and maximum lengths allowable between the
AXB-DMX512 and Central Controller. The maximum wiring lengths for using
AXlink power are based on a minimum of 13.5 volts available at the Central
Controller's power supply.
Wiring Guidelines at 160 mA
Wire Size Maximum Wiring Length
18 AWG 733.57 feet (223.59 m)
20 AWG 464.11 feet (141.46 m)
22 AWG 289.35 feet (88.19 m)
24 AWG 182.39 feet (55.59 m)

Using AXlink communication

Connect the AXlink wiring to the connector on the AXB-DMX512, as shown in
FIG. 5.
PWR
AXP
AXlink connector
on AXB-DMX512
AXM
GND
FIG. 5
AXlink wiring
DMX512 data communication
Note: Some DMX devices only use DATA+ and DATA-. Connect these to
DATA1+ and DATA1-, leaving DATA2+ and DATA- unconnected. The DATA2 In
and Out ports are not currently supported.
Transmit Wiring
For transmit wiring, connect the DMX512 wiring to the OUT connector, as
shown in FIG. 6.
GND
DATA1-
DATA1+
DMX 512 OUT
DATA2-
connector on AXB-DMX512
DATA2+
FIG. 6
DMX512 transmit wiring
Receive Wiring
For receive wiring, connect the DMX512 wiring to the IN connector, as shown
in FIG. 7.
GND
DATA1-
DATA1+
DMX 512 IN
connector on AXB-DMX512 DATA2-
DATA2+
FIG. 7
DMX512 receive wiring
3000 RESEARCH DRIVE, RICHARDSON, TX 75082 • 800.222.0193 • fax 469.624.7153 • technical support 800.932.6993 • www.amx.com
PWR
AXP
AXM
GND
GND
DATA1-
DATA1+
DATA2-
DATA2+
NC
GND
DATA1-
DATA1+
DATA2-
DATA2+
NC
For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).
©2007 AMX. All rights reserved. AMX and the AMX logo are registered trademarks of AMX.
AMX reserves the right to alter specifications without notice at any time.
Mounting the AXB-DMX512 in a Rack
To mount the AXB-DMX512 in an equipment rack, you will need an AC-RK rack
mounting kit.
1. Remove the two screws on the front panel of the AXB-DMX512.
2. Remove the front panel and the space bracket behind the panel.
3. Remove the rubber feet on the bottom of the unit, if necessary. Insert a
scissors blade or other sharp object into the side of one of the rubber feet
and pull it off. Do the same to remove the other three rubber feet.
4. Place the unit in the appropriate opening in the AC-RK.
5. Place the front panel of the AXB-DMX512 on the front of the rack over the
unit and secure the screws.

Replacing the Lithium Battery

A lithium battery (FIG. 8) with a life of approximately 5 years, protects stored
presets if a power loss occurs. The battery is not used when DC power is
supplied to the AXB-DMX512. Write down the replacement date on a sticker or
label by adding 5 years to the date of installation, and then attach it to the
bottom of the AXB-DMX512.
Device
FIG. 8
Lithium battery and socket
Note: All control commands in AXB-DMX512 memory are lost when the lithium
battery is replaced
Contact your AMX dealer before you replace the lithium battery and verify that
they have a current copy of the Axcess program for your AXB-DMX512. This
will avoid any inadvertent loss of data or a service outage.
You will need a flat-blade tool (non-conducting) that can be slipped under the
lithium battery to pry it up and out of the socket.
Note: Static electricity can damage electronic circuitry. Before removing the
lithium battery from the enclosure, discharge any accumulated static electricity
from your body by touching a grounded metal object.
1. Discharge the static electricity from your body.
2. Unplug all cables from the AXB-DMX512.
Device
3. Remove the AC-RK and AXB-DMX512 from the mounting rack. Other-
wise, go to step 4.
4. Remove the five pan-head screws on the top of the AXB-DMX512 enclo-
sure.
5. Pull the two enclosure halves apart and set the bottom portion of the
enclosure on a flat surface.
6. Locate the battery on the circuit card.
7. Carefully pry the battery out of its socket and insert the new battery. Write
down the next replacement date on a sticker or label by adding 5 years to
the replacement date, and then attach it to the bottom of the AXB-
DMX512.
8. Plug all cables back into the AXB-DMX512.
9. Place the top portion of the enclosure back onto the bottom portion. Then,
refasten the five pan-head screws.
Device
10. Reconnect the cables removed for battery replacement.
Note: There is a danger of explosion if you replace the battery incorrectly.
Replace the battery with the same or equivalent type recommended by the
manufacturer. Dispose of used battery according to the manufacturer's
instructions. Never recharge, disassemble, or heat the battery above 212 °F
(100 °C). Never solder directly to the battery or expose the contents of the
battery to water.
4/07
Battery (CR2032 type - 20mm coin cell)
socket
93-5927-01 REV: A