IPL EXP I/O Series • Hardware Features and Installation
27
eBUS port (IPL EXP 200)
eBUS is a technology (proprietary bus architecture and serial communication protocol)
developed by Extron. It allows many eBUS devices (such as button panels) and accessories
(including power and signal hubs) to be connected to a single control processor or
expansion interface to expand the capabilities of a control system. Button panels are
automatically recognized by the host control processor and can be added or removed at
any time.
See the
eBUS Technology Reference Guide
(available at
)
before you install eBUS devices and accessories. It explains how to determine how many
devices are supported when directly connected to the expansion interface and where (at
what distances and what points in a system) and when it is advisable to add external power
supplies. Also see the guide for each eBUS device for detailed installation information
specific to each product, such as how to set the eBUS address and mount the devices.
Each device in a system must have a distinct eBUS address that is not shared with any
other device in the same system.
Wire both ends the same on each cable that connects eBUS devices. Extron STP 20
Series cable is recommended for these connections (see the
on
+V +S -S G
eBUS (PWR 3W)
1 2 3
G
DIGITAL I/O
4
MUTE
VOLUME
VIDEO
DVD
PC
DOC CAM
LAPTOP
VIDEO
PC
VOLUME
DISPLAY
OFF
ON
Rear Panel,
IPL EXP 200
eBUS Accessory Port
Connect the first eBUS device to this port, then connect other
eBUS devices and accessories to that device in the desired
topology (daisy chain, star, or combination).
• Wire the connectors the same at both ends for every eBUS
device.
• See the
eBUS Technology Reference Guide
for the
recommended distance from the expansion interface or
control processor to the last eBUS device and maximum
quantity of devices per control processor.
• The IPL EXP can provide power to the button panel devices.
eBUS port
on an
eBUS device
(button
panel or
similar
device)
+S
+V
-S
G
+ Signal
+12 VDC
- Signal
Ground
Drain Wires
eBUS Port Monitoring
Use this port to connect button panels for intuitive control of the
system once the panels are configured. The port is always on,
unless the total load reaches the overload condition.
Global Configurator software provides a way to monitor these ports.
•
Normal operation mode
—The load drawn by connected
devices is below the maximum power threshold.
•
Limit mode
—The total load at this port has reached the
maximum threshold power.
•
Overload mode
— The load exceeds maximum threshold
power usage and enters the fault state. The eBUS port shuts off.
Power and eBUS communication will be restored after power
draw from the connected devices falls back below the threshold.
Figure 16.
eBUS Port Cabling
This port provides power to eBUS devices. The EXP can be configured to provide
indication to the user If the power draw by the connected devices reaches the
maximum level allowed (the Limit state). If the power consumption exceeds the allowed
threshold, the EXP shuts off the eBUS port and the port enters the overload (Over)
state. If that occurs, you must resolve the hardware cause of the power overload before
the EXP can successfully restore function to this port. Once the power consumption of
the port is reduced to below the maximum overload condition threshold, the eBUS port
automatically re-enables and resumes function.
If additional power supplies are required for an eBUS system, consider the following:
•
Do
not
connect power from
both
the EXP and the supplemental power supply to
any eBUS device.
•
Do not allow power from the supplemental power supply to flow to the EXP.
(part 68-1449-01)
3/30/17: peer reviewer for rev. E of the
IPCP Pro guide asked if these bulleted
lines of eBUS wiring advice should be
attention notices.
Per John Spencer, 4/21/17: “Nothing will
happen to the product or the user if
wired wrong, other than it wont work.
So no, lets not change it “
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