s
l
SENTRON 3/6 Bus Plug with Optional SEM3™ Package
6.2 SEM3™ FCC Notice
This equipment has been tested and found to comply with
the limits for a Class A and Class B digital device 240V and
below and 480V and below respectively, pursuant to Part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This
equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case
the user will be required to correct the interference at his or her
own expense.
6.3 CONTROL WIRING
Once the bus plugs are installed on the duct, the control wiring
may be configured. Two types of control wires are used:
1) 600V Class 2 cables or 2) CAT6 Ethernet cables.
1)
600V Isolated Communication cables
are used to "daisy
chain" metered bus plugs (not containing the SEM3™
controller
) back to a central controller bus plug. The cables
are used for two-way communication from the controller to
the rack/meter module. Communication cables should only
be installed after the bus plugs are installed on the busway.
CAUTION:
It is recommended to de-energize the SENTRON
busway when installing the communication cables for the
metered bus plugs. This limits hazards associated with
working near live electrical conductors.
Communication cables are Class 2 shielded cables (Figure 2)
and are suitable for use in 600V applications. Care should be
taken to follow codes and standards for clearance and isolation
of Class 2 wiring from power wiring. These are
NOT
standard
Ethernet cables.
Figure 1: Meter Module Configuration Label
Figure 2: 600V Isolated Communication Cables
CAUTION: Failure to use SEM3™ components from Siemens
could cause damage to the product and place the user at
risk of electrical shock or fire.
Figure 3 shows the RJ45 communications ports on the rear of
a metered bus plug. Similarly, controller bus plugs have two
RJ45 communication ports labeled R1 and R2 on the rear side
of the controller housing. A "daisy chain" metering network is
formed by connecting communication cables between the
meter plug ports and controller ports R1 and R2. Each controller
bus plug can support a maximum of 45 meter modules split
between ports R1 and R2. Note that controller plugs have up
to six meter modules which must be included when calculating
the total number of meter modules in the network. Please refer
to Section 8.0 for an illustration of a typical network topology.
Communication cables are available in 6, 12, 24, 36, 60, 120
and 240 inch lengths.
Communication cable length for any network should be limited
as listed below:
• Total communication cable length from controller to end of
"daisy chained" run, metering 24 poles, NOT TO EXCEED
60
FEET.
• Total communication cable length, metering 18 poles, NOT
TO
EXCEED
100
FEET.
• Total communication cable length, metering fewer than 18
poles, NOT TO EXCEED
200
FEET.
TIP: Minimizing the total length of communication cable
in a network will promote efficient communication between
the controller & meter modules. Metering accuracy is
unaffected by overall cable length.
4
ROTARY SWITCH
SETTING (0 - 7)
C
T
(A
)
PH
A
SE
CIRCUIT (1
- 6
)
CONTROLLER ID
METER MODULE CONFIGURATION
42178
7A
00
Summary of Contents for SENTRON
Page 1: ...SENTRON 3 6 Bus Plug with Optional SEM3 Package usa siemens com busway Installation Manual ...
Page 16: ...14 s l SEM3 Metered Bus Plug for SENTRON Busway Systems 11 Notes ...
Page 17: ...15 s l SEM3 Metered Bus Plug for SENTRON Busway Systems Notes ...
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