Intelligent Building Solutions CHB 23 B User manual

Installation Manual
CHB 23 B
NETWORK HUB
●up to 8 BUS lines
●Desktop
CIB-tech

I n t r o u c t i o n
The CHB 23 B is an 8-channel CIB-tech network component, with the purpose of extending the maximum
length of the CIB-tech network and simplif ing the CIB-tech wiring b facilitating star-t pe topologies. It
connects the backbone bus of the CIB-tech network and up to 8 different CIB-tech bus lines1.
T e c h n i c a l S p e c i f i c a t i o n s
Electrical characteristics
●Power Supply
The CHB 23 B can be powered from two sources: remotel from the backbone cable of the CIB-tech
network via the IBB-bus connector or locall through its power jack connector. The CHB 23 B favors
local power suppl over remote power and uses it automaticall if available; should the local power
suppl fail, the CHB 23 B switches back automaticall to backbone-supplied power. It should be
noted that this is not a desirable scenario unless the network is designed to be backbone-powered in
the first place, since the increased load on the backbone cable ma lead to insufficient voltage on
the network section connected to the inadvertentl remote-powered hub and / or ma cause
overheating of the backbone cable itself.
○Operating voltage range: 20 to 28V DC (nominal 24V DC)
○Own power consumption (no hub-powered network segments connected)
■Power suppl via IBB-bus connector
●Standb current (IHS1) 40mA
●Maximum current (IHM1) 65mA
■Power suppl via dedicated power jack
●Standb current (IHS2) 50mA
●Maximum current (IHM2) 80mA
●Power output
○Output voltage = Input voltage – 0.3V
○Maximum output current:
■Via backbone bus connector (IBBM) 3A
■Via bus connectors, each (IBM) 400mA
Power consumption of a hub is a function of the requirements of the network segments it is itself suppl ing
with power and can be found as the sum of all the network's and its own power consumption. At full load on
all segments, including power for other hubs via the output backbone connector (OBB), this would become:
IHUBM1 = IHM1 + IBBM + 8 x IBM = 6.265A for remotel powered hubs (via IBB) or
IHUBM2 = IHM2 + IBBM + 8 x IBM = 6.28A for locall powered hubs
However, if the hub is remotel powered from another hub via the backbone, it's IHUBM cannot exceed the
output power rating of the hub that powers it (IBBM), therefore such a remotel powered hub ma not be
loaded to it's full load. For such a hub, the sum of all the power it's expected to deliver and consume must be
less than the amount of power available to it (IBBM):
IHUBM1 = IHM1 + IBB + IB1 + IB2 + IB3 + IB4 + IB5 + IB6 + IB7 + IB8 < IBBM
Locall powered hubs have no such limit and can be loaded to the maximum rating of their backbone and
bus outputs.
1 See “CIB-tech installation manual” for details.
CHB 23 B ©2009 - Intelligent Building Solutions 1

Mechanical characteristics
The CHB 23 B has a beige, flat, desktop-t pe enclosure.
●Dimensions: 145mm W x 190mm L x 31mm D
●Weight: 315g
Environmental characteristics
●Operating temperature: -10ºC to 85ºC
●Storage temperature: -25ºC to 100ºC
K e y F e a t u r e s
●Connects backbone with up to 8 bus lines
●Can be powered via backbone bus connector or via dedicated power connector
●Provides power via the bus lines to the connected devices
●Can provide power to other CIB-tech hubs
●Internal power LED (active for both remote or local power)
I n s t a l l a t i o n
The CHB 23 B is a desktop hub that requires no special mounting; it can be placed in an suitable rack
cabinet or junction box at the CIB-tech bus junction.
Part escription
●Bus connectors:
○4P4C modular jack connectors for connecting CIB-tech bus lines (other CIB-tech devices)1
○The CHB 23 B has 8 (B1 to B8) functionall identical bus connectors
●BUS EOL switches:
○End Of Line switches for CIB-tech bus lines
○ever BUS EOL switch corresponds to the bus connector above it
●IBB bus connector:
○“Input backbone bus connector” - 8P8C (RJ45) modular jack connector for connecting the CHB
23 B device to the backbone of the CIB-tech network
○A CHB 23 B device can be powered remotel via this connector
●OBB bus connector:
○“Output backbone bus connector”- 8P8C (RJ45) modular jack connector for connecting the CHB
23 B device to the backbone of the CIB-tech network
○Power can be delivered to other CIB-tech devices (mostl other hubs) via this connector
●BB EOL switches:
○End Of Line switches for the CIB-tech s stem's backbone bus1
●LED:
○Power-on LED
●Power switch:
○main power switch for the CHB 23 B. This switch enables/disables powers for the CHB 23 B
and the bus lines; Note that the OBB bus is alwa s powered, it dose not depend on power switch
state
●Power connector:
○2.1mm female power jack connector for main power suppl (if the device is powered via this
connector it disconnects from the IBB bus supplied remote power)
1 See “CIB-tech installation manual” for details.
CHB 23 B ©2009 - Intelligent Building Solutions 2

●Selector switch:
○rotar switch for changing bus timing (see details below)
CHB 23 B front view
BUS-EOL switch / BB-EOL switch
CHB 23 B rear view
CHB 23 B ©2009 - Intelligent Building Solutions 3
I
O
Bus connectors
B8 B7 B6 B5 B4 B3 B2 B1
IBB-Bus
connector
OBB-Bus
connector
LED
BB-EOL switch BB-EOL switchBUS-EOL switches
Power
switch
Power
connector
Switch handle
ON
Switch handle
OFF

CHB 23 B top view
CHB 23 B ©2009 - Intelligent Building Solutions 4
LED Power switch
Power connector

CHB 23 B bottom view
Wiring iagrams
Connection to the backbone bus of the CIB-tech s stem:
Use the CHB 23 B device's two 8P8C (RJ45) modular jack connectors to connect it to the CIB-tech s stems
(chain like) backbone bus. Do not forget to switch off the corresponding BB-EOL switch(switches) if other
devices/hubs are connected to the IBB bus and / or OBB bus connector1; Please note, however, that an IBB
bus connector should onl be connected to another hub's OBB bus connector, and so on. Connecting an IBB
bus connector to another IBB bus connector is allowed if none of the two hubs are to be remotel powered,
but ou should never connect two OBB bus connectors with each other.
NOTE: In small CIB-tech s stems installations, where no backbone is present (the CHB 23 B is not
connected to other hubs) the BB bus connectors are not used and the BB-EOL switches must be in the ON
position.
1 See “CIB-tech installation manual” for details.
CHB 23 B ©2009 - Intelligent Building Solutions 5
Power switch LED
Power connector
Selector switch

Connection to CIB-tech systems bus lines (other evices):
Use the CHB 23 B device's 8 4P4C modular jack connectors to unite up to 8 CIB-tech bus lines into one CIB-
tech network, connected with other bus lines of other hubs via the backbone;
Please do not forget to set the BUS-EOL switches correctl . All the bus connectors that have a bus line
connected to them should have their switches in the OFF position. All the other switches, corresponding to
unused bus connectors, should be in the ON position.
Please check the power consumption of the individual bus lines: the maximum power output supplied b
each 4P4C connector on the CHB 23 B device is 400mA at 24V.
NOTE: No other CIB-tech hub should be connected to the bus lines.
CHB 23 B ©2009 - Intelligent Building Solutions 6
I
O
0V DC
0V DC
BB BUS-L
BB BUS-H
24V DC
24V DC
24V DC
0V DC
0V DC
0V DC
BB BUS-L
BB BUS-H
24V DC
24V DC
24V DC
0V DC
I
O
0v DC
24v DC
BUS-L
BUS-H
0v DC
24v DC
BUS-L
BUS-H

Connecting the power supply
The CHB 23 B can be powered via its local power connector:
NOTE: Power suppl with Φ5.5xΦ2.1mm DC plug is required1.
1 See “Recommended equipment to be used with CIB-tech” for details
CHB 23 B ©2009 - Intelligent Building Solutions 7
Power supl
24VDC
230VAC
5.5mm 2.1mm
+24VGND (-)

A justing bus timing
To insure correct operation of the CIB-tech network, the CIB-tech hubs have a built-in timing circuit used to
counter the effects of bus capacitance and end-of-line signal reflections. The factor default setting should be
adequate in most cases, but signal qualit depends on actual cabling circumstances and in case of poor bus
performance the timing might need adjustment.
Changing bus timing is possible using the timing selection switch located on the bottom of the CHB 23 B.
The CHB 23 B's timing selection switch has 16 positions, marked 0 to 15(F), with hexadecimal numbers. The
t pical values in use are 3 to 7 with the default value of 4. Values outside of this range should onl be used in
extreme cases, 0 is factor reserved and should never be used.
NOTE: Before changing the default setting be sure that ou understand the terms in the “CIB-tech
Installation Manual” or contact IBS tech support.
Setting the selector switch
Use a small screwdriver to rotate the selector switch to the desired value (pointed-to b the arrow-shaped tip
of the switch):
Document Version 1.0
Technical Support:
http://www.ibs-smarthouse.com/
[email protected]
All trademarks used in this document are properties of their respective owners.
The manufacturer reserves the right to change the technical features of this product without prior notice.
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