Directed Electronics d300.1 User Manual download pdf (Page 31)

PTU-D300 User’s Manual (v2.18.0) SPECIAL CONFIGURATIONS

page 27

5 SPECIAL CONFIGURATIONS

5.1 High-Speed Operation

This section discusses how to improve high speed pan-tilt unit performance for your load.

The primary factors that affect high speed operation are:

• Load weight, weight distribution and dynamics

• Desired upper speed limit (see Section 4.4.6)

• Rate of acceleration (see Section 4.4.4)

• The base (start-up) speed (see Section 4.4.5)

• The voltage of the source power supply. Use of the highest available voltage in the range 9-

30VDC significantly improves axis speed and acceleration performance.

• The in-motion power mode (see Section 4.6.2) and stationary power mode (see Section

4.6.1).

• Multi-axis dynamics. Simultaneously moving the tilt and pan axes affects the forces exerted

on the pan axis.

High speed operation tests should always begin on each axis in isolation. When the best

performance for each axis in isolation is understood, high speed operation of simultaneous pan-tilt

axis movements can be performed.

An example configuration string for high speed operations is:

PA9000 TA9000 DS

5.2 High-Payload Operation

This section discusses how to improve high payload weight operation of the pan-tilt. The

primary factors affecting payload capacity is the tilt axis, as it forms a mechanical lever which is

an efficient force multiplier. The primary means to increase payload capacity are:

• Configure the pan-tilt controller for increased motor current and torque. An example

configuration string to increase payload capacity is:

DF PA1000 TA1000 PB57 TB57 PMR TMR DS

If your move duty cycle is less than 20%, you can alternatively use the highest move current

settings and regular hold power settings of PMH TMH PHR THR .

• Move the payload center of gravity closer to the tilt axis

• Use a higher voltage power source in the range 9-30VDC

• Determine if the payload can be modified to lighten it.

5.3 Battery-Powered Operation

The Pan-Tilt Unit has been designed for battery powered operation. Battery powered

applications need to conserve power when possible. The pan-tilt unit has commands to control

pan-tilt motor power consumption while in transit and when stationary (see Sections 4.6.1 and

4.6.2). Careful testing can be used to determine the lowest power modes that assure your load can

be moved and held without losing synchrony (see Section 3.8).

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 41 42

No comments

Directed Electronics d300.1 User Manual Page 31