Communications 5-3
3300 ACM Installation and Operation Manual Power Measurement Ltd.
5.4 3300 ACM -TRAN
MODEL OPERATION
The TRAN (transducer) model of the 3300 ACM provides all
the functions of the basic model 3300 ACM, except that it has
no front panel display or keypad. All measured parameters
and programming parameters are accessed via communica-
tions.
NOTE
All units ordered with the TRAN option
that are to be used with Modbus communi-
cations must also be ordered with the
MOD option. For this option the factory
presets the device for Modbus communica-
tions.
To initiate communications with the device, the factory-set
UNIT I.D. and BAUD RATE must be used:
a) UNIT I.D. is set at the factory to be the last 4 digits
of the unit’s serial number, which can be found on
the rear cover of the unit. For example, a unit with
serial number 71317 will be preset to UNIT I.D. of
1317.
NOTE
If the unit has been ordered with the MOD
option (Modbus communications), then
only the last two digits of the units' serial
number will be used as the unit's ID.
(Modbus only allows unit ID's between 1
and 247).
b) BAUD RATE is set at the factory to 9600 baud.
Once communication has been established using the factory
defaults, the device’s operating parameters may be changed
using the remote computer. The user may also reset the UNIT
I.D. of the device to any other desired value, as well as
resetting the BAUD RATE. Refer to Section 5.3 for important
information regarding resetting the BAUD RATE.
5.5 M-SCADA / L-SCADA
The 3300 ACM maintains compatibility with Power
Measurement’s PC-based power monitoring software pack-
ages: M-SCADA and L-SCADA. The 3300 ACM is also
compatible with the entire family of 3000 series digital
instrumentation, which includes power meters, power
demand controllers, and smart transducer interfaces. A single
M-SCADA station can support up to 99 remote sites with a
total of 3168 devices. L-SCADA supports 12 devices distrib-
uted across up to 12 sites. Systems are easily expandable, and
very large systems can be built by linking multiple master
stations.
M-SCADA / L-SCADA provides extensive full-colour data
display options, automated data handling and system control
features including:
a) Real-time data display for all or part of the power
system. Full colour, user-configurable system diagrams
can be used to give a system-wide display of power
conditions. Real-time and logged data for individual
devices can also be viewed.
b) Display of captured waveforms and harmonic
analysis. M-SCADA / L-SCADA can provide more
detailed power quality analysis to the 63rd harmonic
in graphical or tabular formats.*
c) Display of 12-cycle waveform recorder data. Wave-
forms for all inputs can be displayed concurrently on
the screen for fault or surge/sag analysis.*
d) Historical trend graphing. M-SCADA / L-SCADA
can display historical, time-interval triggered
snapshot log data in graphical format.*
e) Detection, annunciation, display and logging of
alarm conditions.*
f) Automatic retrieval and disk archival of data logs
from remote devices.*
g) Manual control of the on-board relays of all Power
Measurement devices.*
h) Remote programming of the setup parameters of all
Power Measurement devices.
Power Measurement’s proven distributed processing approach to
power monitoring guarantees consistently accurate data
retrieval by delegating extensive data acquisition, data
logging, and control capabilities to the remote meter/RTU
sites. Less processing requirements at the master station
means high reliability and performance. Non-volatile data
logs* ensure data is always retrievable following a temporary
power or communication failure.
* 3300 ACM does not provide this functionality.
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
Need help?
General
