Siemens 9300 Benutzerhandbuch

9300 Series User’s Guide

Displaying Data with Vista

Chapter 4 - Using ACCESS Software 

Page 79

The harmonics measurement display shows total harmonic distortion for each 
phase of voltage and current. Links to harmonics min/max and harmonics 
trending displays are provided, and a control object is included for enabling/
disabling harmonics logging

Level 3 WinPM.Net authority is required to reset the power quality event 
counter, the manual waveform trigger, and the control objects.

The Log Server must be running to view the CBEMA plot or sequence-of-events 
data.

Double-click the Long-term Min/Max object to see a Vista grouping window 
showing min/max values for phase voltage and current THD. 

Level 3 WinPM.Net authority is required to reset the min/max values.

Total Harmonics Distortion (THD) is displayed as a percentage of the 
fundamental.

Harmonics Trending

The Log Server must be running to view the logged harmonics data.

Harmonics data logging is enabled by default. 

Level 3 WinPM.Net authority is required to use the control object.

The control object indicates the logging enable status: the switch is in the up 
position (1) when logging is enabled, and down (0) when logging is disabled.

Setpoints

The Setpoints diagram uses setpoints to monitor kW demand, over current and 
under average voltage and power factor levels. Vista annunciates warnings if any of 
the values exceed specified limits. Users with Level 3 WinPM.Net authority can 
define the setpoint limits.

Monitoring of kW demand, phase current and voltage unbalance conditions, 
with annunciation when user-specified upper limit is exceeded

Real-time display of kW demand, phase current and voltage unbalance

Over kW Sliding Window Demand Monitoring
Over kW demand monitoring is disabled by default. Level 3 WinPM.Net authority 
is required to enable this monitoring. The status will read 

NOT

 

AVAILABLE

 when 

monitoring is disabled.