CONTREX M-Traverse - Manual (Page 76)

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DIRECT MODE
The Direct mode is used to calibrate and troubleshoot the M-Traverse. In the Direct
mode of operation, you can set the level of the Speed Command Out directly from the
M-Traverse to the motor drive. The Direct mode is an open-loop mode of operation.
Therefore, Scaling, Accel/Decel, and closed loop compensation (PI) algorithms are
bypassed in the Direct mode. The Direct mode is used in conjunction with the Run and
the Stop controls.
Caution: To avoid damage to your system, the M-Traverse must be calibrated and the
motor drive set up before you enter the Direct mode. Refer to Installation/
Setup: Calibration.
The Direct Analog Command (CP-62) parameter uses the full 12 bit resolution of the
analog Speed Command Output.
A value of 4095 is a 100% forward output command.
A value of 2048 is a 50% forward output command.
0 is a zero output command.
A negative value indicates a reverse output command (e.g., - 4095 is a 100% reverse
command).
To enable the Direct mode, enter "2" the Control Mode (CP-14) parameter.
The factory default Direct Mode Control Parameters are found in Table 3-20. To modify
the default parameters, refer to Table 3-21. If you are uncertain how to enter a Control
Parameter, review the
Operations: Keypad section.
Table 3-22 Default Direct Mode Control Parameters
CP Parameter Name Parameter Value
CP-62 Direct Analog Command 0
CP-14 Control Mode 1
Table 3-23 Entering Direct Mode Control Parameters
CP Parameter Name Parameter Value
CP-62 Direct Analog Cmd Enter the DAC bits of the calitrated full scale
Speed Command Out at which you want your
system to operate.
CP-14 Control Mode Enter “2” to enable the Direct Mode (disables
both Follower Mode options).