CONTREX ML-Drive - Manual (Page 140)

C - 4
CP-31 PPR FEEDBACK
PPR Feedback (CP-31) is the number of gear teeth or number of encoder lines on the Follower
feedback sensor per revolution (pulses per revolution).
CP-33 MAX RPM LEAD
Measured at the Lead sensor shaft, Max RPM Lead (CP-33) is the maximum RPMs at which the
Lead will operate your system. This number is not to be confused with the full capacity at which
the Lead is capable of running. A system is not generally run at full capacity.
CP-34 MAX RPM FEEDBACK
Measured at the sensor shaft, Max RPM Feedback (CP-34) is the maximum RPMs at which you
want your system to operate and is not to be confused with the full capacity at which your
system is capable of running. A system is not generally run at full capacity.
MP-40 TACH
In the Master mode, Tach (MP-40) will display the feedback in Master Engineering Units (CP-20).
In the Follower mode, Tach (MP-40) will display either the Master Engineering Units or the
feedback to Lead ratio in Follower Engineering Units (CP-21), depending on the value in Display
Mode Follower (CP-64). In Jog or the Direct mode, Tach (MP-40) will display the feedback in
RPMs. The feedback is read by the ML-Drive every ten milliseconds. The readings are
summed, then averaged for one second before the Tach is displayed.
MP-41 LEAD FREQUENCY
The Lead Frequency (MP-41) displays the frequency of the Lead Frequency Input
(J4 pin 3) in units of hertz (pulses per second). Lead Frequency (MP-41) is not averaged or
filtered; it is the ten millisecond frequency calculation prior to the display update. Because Lead
Frequency (MP-41) is not averaged or filtered and because of sensor irregularities, it may
appear less stable than Tach (MP-40).
Numbers that are larger than 9999 are displayed with two decimal places. For example, 10,000
hertz is displayed like the figure in Feedback Frequency, MP-43.