Siemens SIRIUS 3RW55 Equipment Manual page 228

Functions
8.20 Monitoring
Measured values
Measured value
Phase currents (%)
Phase currents (rms)
Asymmetry
Motor voltage
Power
Line frequency
Output frequency
Motor temperature rise
Remaining time for motor overload protection
Remaining motor cooling time
228
Description
The phase currents are shown as a percentage relative to the rated op‐
• I L1
erational current I
• I L2
or the average of all 3 phases.
• I L3
These measured values can be presented graphically as a bar or line
• Average
chart on the display of the 3RW5 HMI High Feature.
• Show bar chart
1) You will find further information in chapters Design and operator con‐
trols of the High Feature 3RW5 HMI (Page 98) and Graphical display of
measured values on the 3RW5 HMI High Feature (Page 229).
The phase currents are displayed in amperes. You can monitor each
• I L1
phase (L1/L2/L3) individually, the average of all 3 phases, or the maxi‐
• I L2
mum value of each phase.
• I L3
These measured values can be presented graphically as a bar or line
• Average
chart on the display of the 3RW5 HMI High Feature.
• I L1/L2/L3 max
You will find further information in chapters Design and operator con‐
trols of the High Feature 3RW5 HMI (Page 98) and Graphical display of
• Show bar chart
1)
measured values on the 3RW5 HMI High Feature (Page 229).
The maximum deviation as a percentage of one phase current relative to
the average value of all 3 phase currents.
• U L1-L2 The motor voltage is shown in Volts. You can monitor the motor voltage
of each phase.
• U L2-L3
These measured values can be presented graphically as a line chart on
• U L3-L1
the display of the 3RW5 HMI High Feature.
You will find further information in chapters Design and operator con‐
trols of the High Feature 3RW5 HMI (Page 98) and Graphical display of
measured values on the 3RW5 HMI High Feature (Page 229).
Active power Indicates the current active power in kW.
This measured value can be presented graphically as a line chart on the
display of the 3RW5 HMI High Feature.
You will find further information in chapters Design and operator con‐
trols of the High Feature 3RW5 HMI (Page 98) and Graphical display of
measured values on the 3RW5 HMI High Feature (Page 229).
Power factor L1...3 Indicates the current power factor.
Indicates the current line frequency in Hz.
This value is displayed only if the starting and stopping output frequen‐
cies differ from the line frequency.
Current value of motor temperature rise in %. This measured value is
calculated internally by the 3RW55 or 3RW55 Failsafe soft starter and
indicates the relative temperature rise of the motor.
The remaining time for motor overload protection provides a dynamic
prediction of the time in seconds remaining until the tripping of the
motor overload protection, depending on the momentary motor cur‐
rent.
The remaining recovery time in seconds after protective tripping of the
motor until the 3RW55 or 3RW55 Failsafe soft starter is ready to operate
again.
. You can monitor each phase (L1/L2/L3) individually,
e
1)
1)
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006
1)
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