CONTREX MLP-Trim - Manual (Page 71)

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Follower Mode - Analog Feedback
The MLP-Trim can be scaled for Engineering Unit setpoint entry and Tach display
operation using the analog input for the feedback signal. The following Control
Parameters give the MLP-Trim the necessary information for analog feedback operation
in the Follower mode.
Analog Input Allocation (CP-84)
Setting CP-84, Analog Input Allocation, to a value of "2" allocates the
analog input to be used as the feedback source.
Follower Engineering Units (CP-21)
The actual value of the Follower Engineering Units if the system were to
operate with an analog feedback level of 10.0 volts and a lead of Max
RPM Lead (CP-33). This is the maximum calibrated analog input level
(refer to Installation/Setup: Calibration, Analog Input Calibration).
Note: The analog input does not need to operate to 10.0 volts full scale to be
used for analog feedback.
Max RPM Lead (CP-33)
This is the maximum RPM of the lead sensor shaft during system
operation.
PPR Lead (CP-30)
The number of gear teeth or encoder lines on the lead sensor per
revolution.
Table 3-22 Default Scaling Control Parameters
CP Parameter Name Parameter Value
CP-84 Analog Input Allocation 0
CP-21 Follower Engineering Units 1.000
CP-33 Max RPM Lead 2000
CP-30 PPR Lead 60