Marathon Computer V3.5 user manual Marathon Monitors Inc

Marathon Monitors Inc.

more details). The output control is based on 0 to 99% of the output device's control range. For example, 50% control would equal 2.5 VDC out where 5 VDC equals maximum heat output of the drive. This can be used with servo drives that require a voltage or current command signal for controlling heat output or servo positioning.

3.POSITIONING MOTOR with SLIDEWIRE FEEDBACK: Set Control Modes for Single Position-Proportioning with slidewire feedback. CONTROL OUTPUT #1 will drive the motor in the open direction, CONTROL OUTPUT #2 in the close direction.

Remember, the above methods are just examples of the typical applications of the UNIPRO. Please call your MMI representative or application engineer for questions concerning your particular system.

Chart Recorders

If a chart recorder is to be used, it must have input specifications within the following ranges:

0 to 4 VDC

0 to 45 mA

corresponding to a FRONT PANEL display of 0-2000. The ideal location of the recorder is adjacent to the instrument but it may be located remotely if the connecting wires are properly shielded.

Long wiring runs from the chart recorder outputs may require resistive termination

(2 K ohms or so) at the chart recorder input(s) should be isolated from ground.

Computer Interface

If you wish to take advantage of the UNIPRO's RS-422 digital communications capabilities, refer to "Communications" for more details.

Unipro 3.5 Process Control 1 Aug. 1997