CONTREX CX-1200 - Manual (Page 127)

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RUN MODES P1/1
There are four modes of operation; the Inverse Follower Mode, the Follower Mode, the Master Mode, and the Direct
Mode. Use Run Mode (CP-202) to enter the mode of operation that you want to use when your system is in “Run”. The
setpoints that correspond to these four modes of operation are; the Master Setpoint (CP-210), the Follower Setpoint
(CP-220), and the Direct Setpoint (CP-230). Only one of these setpoints is active at any one time. The active setpoint is
determined by the mode of operation that you select in Run Mode (CP-202). The active Setpoint will also appear as the
Setpoint X (CP-201).
The Master Mode is generally used to control the speed of a single drive, but it can also be used to control the Master
(Lead) speed of an entire process line.
The Follower Mode is generally used to control the ratio of one drive to another.
The Direct Mode is used for direct control of the value of CO Volts (MP-37) and consequently the voltage at CO Sig (J3,
pin 1). The Direct Mode is generally used as a diagnostic tool. However, the Direct Mode can also be used to set the
drive's operating speed directly by simulating a pot.
The result of either the Master Mode or the Follower Mode calculation is displayed in Scaled Ref (MP-30). The Scaled
Ref (MP-30) is the reference speed in Engineering Units per time (EU/Tm). The Direct Mode caluclation is not displayed
in Scaled Ref (MP-30) because the Direct Mode forces the CO Sig to match the Direct Setpoint (CP-230).
Run Mode
Run Mode (CP-202) sets the mode of operation and the subsequent Setpoint, that are used when your system is in
“Run”. The Setpoint and mode of operation combined, determine the Reference Speed and, if applicable, the Refer-
ence Position. The modes of operation are:
4 = Inv Foll Mode
3 = Follower Mode
2 = Master Mode (default)
1 = Direct Mode
Sync Mode
Sync Mode (CP-203) selects the algorithm to be used when RUN Mode (CP-202) is set for Follower or Inverse Follower.
0 = Non-Sync Mode the position follower only, sync pulses are ignored by the control algorithm. 1 = Fixed Mode the
follower setpoint is the ratio/scale factor. 2 = Trend Mode the follower setpoint is altered by the control algorithm to
allow for continuously changing job sizes. 3 = Learn Mode learns the job spaces and the scale factor, also modifies the
follower setpoint.
3 = Learn
2 = Trend
1 = Fixed
0 = Off (default)