Effective Date: 2/04
IL17574C
Page 3-13
IQ 300
Effective Date: 2/04
Page 3-13
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3.3.3
PowerNet Communications (IQ 320 and IQ 330 Base Modules
Only)
Note:
To satisfy proper Wiring Specifications use only Belden 9463 or 3072F, or
Culter-Hammer IMPCABLE shielded twisted pair cable or equivalent, according to
system requirements. SEE TD17513, IMPACC WIRING SPECIFICATIONS BASE
RULES for more detailed information.
Connect the IQ 320 / IQ 330 to the PowerNet network by connecting the twisted
pair communication cable to the INCOM™ port located on the rear face of the
IQ 320 / IQ 330 Base Module. The polarity of the twisted pair is not important.
Tie the communication cable shield to ground only once at the INCOM™ master
device. If there is more than one remote INCOM™ compatible devices (such as the
IQ 320 or IQ 330) cabled to the master device, tie the communication cable shields
together but
do not
connect to ground.
Care must be taken in stripping wire due to close proximity of terminals.
3.3.4
KYZ Pulse Initiator
(IQ 320 and IQ 330 Base Modules Only)
The KYZ Pulse Initiator output can be wired to a 2-wire (K-Y terminals) or 3 wire
(KYZ terminals) pulse receiver. In order to achieve emissions and immunity stan-
dards, shield cable should be used. The cable should be grounded on the non-IQ
Base end. These terminal configurations and the resulting pulse trains are shown in
figures 3.15 and 3.16. The energy represented by each pulse can be specified by
the user as:
apparent (VAh)
;
forward
or
reverse
real (±Wh)
; or
reactive
(±varh)
.
The procedure for specifying the
energy per pulse
is described in
section 4.10.9
.
Each pulse that arrives at the pulse counter indicates that the specified energy has
been consumed by the monitored system. The frequency and spacing of these
pulses represent the energy consumption pattern of the monitored system.
Because the energy represented corresponds to the energy at the
secondary
winding of the CTs and PTs, the CT and PT ratios must be taken into account when
specifying the
energy per pulse
value. An example of how to specify the
energy per
pulse
value is given below.