MTS Series 793 User Manual
Page 244

Static Null Pacing (SNP)
Item
Callout
Amplitude
1
Command
2
Feedback
3
Time
4
Segment #1
5
SNP Hold
6
Segment #2
7
Tolerance
8
Error
9
SNP starts at end of Segment #1
10
SNP Starts
11
SNP Ends
12
Dynamic null pacing
If the error is too large, dynamic null pacing reduces the command frequency, allowing the sensor feedback
more time to track the command.
The frequency decreases until either of the following occurs:
•
The error comes within the user-specified Error Tolerance, at which time the frequency starts increasing
towards the command frequency.
•
The frequency decreases to the minimum frequency value (20% of the original frequency). The command
is then held at this frequency as long as the error remains out of tolerance. This condition is also known
as low cycle.
244 MTS Series 793 Control Software
Station Setup