Rockwell Automation 1403-DM_LM_MM Powermonitor II Instruction Sheet - Manual (Page 12)

1-4 Product Description
1403-IN001A-US-P
Data Logging
The Powermonitor II provides three data logs: the
Event log, the Min/Max log, and the Snapshot log.
Each record of the three logs is date and time
stamped to the nearest hundredth of a second.
Event Log
The Event log consists of the 100 most recent events
that occurred in the Powermonitor II. Such events
consist of power up/power down, setpoint activation,
new configuration data, etc.
Min/Max Log
The Min/Max log records the minimum and
maximum values for 84 parameters for the 1403-MM
and 63 parameters for the 1403-LM. These items
consist of voltage, current, power, total harmonic
distortion, etc. This log can be disabled to increase
real time metering update rate performance.
Snapshot Log
The Snapshot log consists of 50 records. Each record
consists of 46 parameters. These parameters include
voltage, current, power, power factor, etc. This log
can be updated on a periodic basis set by the
configuration data, and/or it can be updated
asynchronously as a result of a setpoint action.
Oscillography (1403-MM only)
The Powermonitor II provides two types of
oscillography:
•
Simultaneous 7-channel 2-cycle
(1)
oscillograph
recording
•
User configurable simultaneous 2-channel 12-
cycle
(2)
oscillograph recording with up to 8 cycles
of pretrigger data.
Both types of oscillography can be triggered
manually or as the result of a setpoint. All channels
are continuously sampled at a 10.8 kHz sample rate.
Operational Characteristics
1403-MM
The Powermonitor II MM module has selectable
accuracy (+/- 0.05% nominal) and update rates (28 to
90 ms) by changing various configuration
parameters. If update rates are critical, then a user
can select a modest filtering mode or disable
unnecessary features. However, if maximum
accuracy is a necessity for a specific application, then
the user can select an additional filtering mode. The
Powermonitor II allows a user to trade update speed
for accuracy.
1403-LM
The Powermonitor II LM module has a fixed
accuracy (+/- 0.1 nominal) and a fixed update rate of
90 ms.
(1) 2-cycle is specified at 50 Hz (2.4 cycles at 60 Hz). Therefore, more data will
be available at frequencies greater than 50 Hz, while less will be available at
frequencies less than 50 Hz.
(2) 12 cycles is specified at 50 Hz (14.4 cycles at 60 Hz). Therefore, more data
will be available at frequencies greater than 50 Hz, while less will be
available at frequencies less than 50 Hz.