CONTREX MLP-Drive - Manual (Page 77)

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Offset Authority (CP-76)
Offset Authority determines the quantity of the offset term (amount of
influence) for a given analog input level.
Offset Polarity (CP-77)
Offset Polarity determines if the offset term is added or subtracted from
the follower scaled reference. If CP-77 is set to 1 (additive), analog
input voltages greater than CP-75 (Offset Null) will cause an increase in
follower speed. Analog input voltages less than Offset Null will cause a
reduction in follower speed.
If CP-77 is set to 2 (subtractive), analog input voltages greater than
Offset Null will cause a decrease in follower speed. Input voltages less
than Offset Null will cause an increase in speed.
Table 3-28 Default Scaling Control Parameters
CP Parameter Name Parameter Value
CP-84 Analog Input Allocation 0
CP-21 Follower Engineering Units 1.000
CP-34 Max RPM Feedback 2000
CP-31 PPR Feedback 60
CP-33 Max RPM Lead 2000
CP-30 PPR Lead 60
CP-75 Offset Null 000.0
CP-76 Offset Authority 100.0
CP-77 Offset Polarity 1