Page 10 - Voltech Instruments PM3000A Universal Power Analyser, designed and produced by Connell Marketing Associates, UK
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Menus and Other Functions
The PM3000A provides a host of programmable functions to meet almost every power
analysis need. These programs can be stored in non-volatile memory and recalled at
will.
SCAL SCALING
- ING
This menu enables the user to scale the readings of the PM3000A to suit
the ratio of external voltage and current transducers. If required inputs
may be individually scaled to match calibrated transducers.
INTEG INTEGRATOR
-RATOR
This function provides access to the integrator set up menus. The
integrator is very flexible and can be programmed to operate in response
to :-
i) Manual control. Integration started and stopped from front-panel push
buttons.
ii) External control. Integration under remote control via a connector on
rear panel.
ii) Time control. Integration controlled by the real-time clock. User can
set:- Start time and date.
Stop time and date.
Reset interval (for registering maximum demands).
Time bands (for measuring consumption in different tariff
bands).
INTER INTERFACE
-FACE
This menu programs the digital and analog interfaces of the PM3000A
IEEE. Sets up IEEE address for system application
RS232. Sets up baud rate and configures instrument for RS232 data
transfer
PRINTER. For Centronics printer. Sets up measurement functions for
printout, and the printout interval
RECORDERS. 8 recorder outputs are available. These are individually
programmed by the user for measurement function, and also for range, to
optimize resolution. They can act as programmable alarms (eg PF < 0.7).
ANALOG. The real time input voltage and current waveforms can be
output to the analog outputs in this mode.
AUXILIARY. (PM3000A-001 version only) Sets up motor torque shaft
speed and power measurement. Motor efficiency is also measured.
DATA DATA LOG
LOG
The PM3000A can record and analyze short term events, from a few
milliseconds, up to several seconds. The waveforms are recorded, and
power parameters previously set up on the parallel interface menu, are
printed after analysis.
Data logging can be triggered manually, or triggered externally using the
‘integrator’ input on rear panel. The waveforms themselves are available
on the ‘analog’ outputs. For example, the short-circuit current, power
and power factor due to an earth fault can be easily measured and
analyzed by using this function.
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