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Parameter assignment
6.7 Differential speed detection
6.7.3
Differential alarm setpoints (P043 - P044)
Differential alarm setpoint displays (Inputs I3
and I5)
Differential alarm setpoint displays (Inputs I4
and I6)
Note
Each channel is programmed independently due to variation in frequency based on a target
RPM or the number of targets on two different rotating shafts.
46
DSD alarm setpoint A and C (P043)
For relay output Q3.
Enter the percentage difference between frequency of probe A and
probe C for relay output. When enabled, output Q3 will alarm on
setpoint differential programmed. When inputting the setpoint value in
percentage, the operator observes the frequency of both setpoints for
comparison using this parameter.
•
Alarm = 1 to 10%
•
When function is enabled, output Q3 is used to alarm the
programmed differential percentage setpoint.
•
When inputting the setpoint value percentage, the operator can
observe the current frequency of both setpoints for comparison in
this display.
DSD alarm setpoint B and D (P044)
For relay output Q4.
Enter the percentage difference between frequency of probe B and
probe D for relay output. When enabled, output Q4 will alarm on
setpoint differential programmed. When inputting the setpoint value in
percentage, the operator observes the frequency of both setpoints for
comparison using this parameter.
•
Alarm = 1 to 10%
•
When function is enabled, output Q4 is used to alarm the
programmed differential percentage setpoint.
•
When inputting the setpoint value percentage, the operator can
observe the current frequency of both setpoints for comparison in
this display.
Operating Instructions, 11/2021, A5E45090709-AC
SITRANS WM300 MFA
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