Siemens SIRIUS 3RW55 - Page 228

Measured values
Measured value Description
Phase currents (%)
• I L1
• I L2
• I L3
• Average
• Show bar chart
1)
The phase currents are shown as a percentage relative to the rated op‐
erational current I
e
. You can monitor each phase (L1/L2/L3) individually,
or the average of all 3 phases.
These measured values can be presented graphically as a bar or line
chart on the display of the 3RW5 HMI High Feature.
1)
You will 󹪝nd 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).
Phase currents (rms)
• I L1
• I L2
• I L3
• Average
• I L1/L2/L3 max
• Show bar chart
1)
The phase currents are displayed in amperes. You can monitor each
phase (L1/L2/L3) individually, the average of all 3 phases, or the maxi‐
mum value of each phase.
These measured values can be presented graphically as a bar or line
chart on the display of the 3RW5 HMI High Feature.
1)
You will 󹪝nd 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).
Asymmetry The maximum deviation as a percentage of one phase current relative to
the average value of all 3 phase currents.
Motor voltage
• U L1-L2
• U L2-L3
• U L3-L1
The motor voltage is shown in Volts. You can monitor the motor voltage
of each phase.
These measured values can be presented graphically as a line chart on
the display of the 3RW5 HMI High Feature.
1)
You will 󹪝nd 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 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.
1)
You will 󹪝nd 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.
Line frequency Indicates the current line frequency in Hz.
Output frequency This value is displayed only if the starting and stopping output frequen‐
cies di󹪜er from the line frequency.
Motor temperature rise 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.
Remaining time for motor overload protection 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.
Remaining motor cooling time 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.
Functions
8.20 Monitoring
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
228 Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006