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Parameter assignment
6.7 Differential speed detection
6.7.2
Maximum frequency setpoint (P041 - P042)
Probe C maximum frequency (P041) for comparison to probe A. Enter the maximum
frequency between pulses for probe C. Input I5 is the second frequency input (motion failure
sensor) with respect to Input I3, applied to the same mechanical equipment being monitored.
Probe D maximum frequency (P042) for comparison to probe B. Enter the maximum
frequency between pulses for probe D. Input I6 is the second frequency input (motion failure
sensor) with respect to Input I4, applied to the same mechanical equipment being monitored.
• For example:
I3 maximum Hz = 60 Hz
I5 maximum Hz = 30 Hz
Alarm setpoint = 10 %
Therefore, a differential of 6 Hz (10%) on channel A or 3 Hz on channel C will cause a
differential alarm to be activated.
• P041: xxx Hz
44
Operating Instructions, 11/2021, A5E45090709-AC
SITRANS WM300 MFA
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