Red-lion MDC User Manual download pdf (Page 38)

ISOLATED DRIVE OUTPUT

Before connecting the MDC to the motor drive, refer to the Isolated Drive

Output Calibration section to determine if the MDC’s analog drive output needs

calibration. Most applications require calibration of the motor drive only.

The MDC can be operated with an internal or external voltage reference. The

jumper above the bottom rear terminal block selects the internal reference

when in the position closest to the board edge. The unit is shipped in this

configuration. The internal reference is factory calibrated to provide 10.0 VDC

full scale output. If your drive requires an input signal other than 0 to 10 VDC,

refer to the section, Calibrating the Isolated Drive Output. If your drive does

not have a process control input, the MDC may be wired to the drive in place of

the drive’s external speed potentiometer. In this case, set the jumper in the

EXTERNAL position. The full scale output voltage is the “high” side of the

drive’s external potentiometer connection.

Wiring the MDC to the motor drive:

DIP SWITCH SET-UP

The DIP switches are accessible through the side of the MDC. The DIP

switch positions and their functions are shown below:

-36-

INTERNAL REFERENCE EXTERNAL REFERENCE

MDC wired to process control input on the

variable speed drive. Reference voltage

supplied by the MDC.

MDC wired in place of an external speed pot.

The “Top of Pot” reference voltage is supplied

from the variable speed drive. (External

speed pot must be removed.) A register of

equal value to the external pot may be

needed across pins 9 and 11 of the MDC to

stabilize the voltage level from the drive.

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 50 51

No comments

Red-lion MDC User Manual Page 38