CB Watch 3 User Manual v6.3 - May 2019 Page 67 of 100
HMI: Measurements / Alarms
Figure 107 – Motor run time alarms
Rewind motor current
The CBW3 can measure the current used by the spring rewinding motor (usually a DC
motor) in order to notice any change over time, possibly highlighting additional friction in
the spring mechanism requiring more torque or a problem with the motor itself.
Both the mean (average) motor current and the maximum motor current (peak inrush
current) are recorded and displayed in the HMI:
HMI: Measurements / Last closing results
Figure 108 – Spring rewind motor current data
Rewind current alarm
An alarm can be set on the maximum inrush current value of the motor by setting a “Max
threshold” value.
HMI: Settings / Analog channels
Figure 109 – Spring rewind motor current alarm threshold
The alarm is displayed when the threshold has been reached or exceeded:
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