CONTREX MLP-Trim - Manual (Page 175)

C - 7
MP-44 DEVIATION (ERROR)
Deviation (MP-44) displays the difference between the Ramped Reference (MP-46) and the
Feedback Frequency (MP-43) measured in units of hertz (pulses per second). Deviation is not
averaged or filtered; it is the ten millisecond frequency calculation prior to the display update.
MP-45 SCALED REFERENCE
The Scaled Reference (MP-45) is the scaled setpoint number converted to hertz. It is the
calculated value that is input to the Acceleration/Deceleration routine. This parameter may
display numbers that are larger than 9999. These larger values are displayed with two decimal
places. For example, 10,000 hertz is displayed as “10.00.”.
MP-46 RAMPED REFERENCE
The Ramped Reference (MP-46) is the calculated output of the Acceleration/Deceleration routine
in hertz. It is the setpoint input to the PID compensation routine. This parameter may display
numbers that are larger than 9999. These larger values are displayed with two decimal places.
For example, 10,000 hertz is displayed as “10.00.”
MP-47 SPEED COMMAND OUTPUT
The Speed Command Output (MP-47) displays the level of calibrated full scale analog output to
the motor drive (J3 pin 1). Speed Command Output is displayed as a percentage; 100
represents 100% of the calibrated full scale analog output.
MP-48 TRIM OUTPUT
The Trim Output (MP-48) is the calculated output of the PID Compensation routine. The Trim
Output added to the feedforward equals the Speed Command Output (MP-47). The Trim Output
(MP-48) is represented in DAC (Digital-to-Analog Converter) bits, for example 4096 equals 100%
output, 2048 equals 50% output.