Azimuth And Elevation Drive Options - RESEARCH CONCEPTS RC2000C Manual

RC2000C Polar Tracking Antenna Controller
ROTATING FEED CW LIMIT:
0-1023
ROTATING FEED CCW LIMIT:
0-1023
The Rotating Feed Jog Duration CONFIG mode item controls the length of time (in milliseconds) that the
polarization motor drive signals are applied when a polarization jog command is received via the serial
communications port. The setting of this parameter determines the accuracy with which the polarization
can be adjusted via remote control.
ROTATING FEED JOG DURATION:1000
175-3000 MSEC
5.10.7

Azimuth and Elevation Drive Options

The CONFIG mode items described in this section set the movement parameters for the azimuth and
elevation axis. The default values of these parameters (as initialized upon system reset) are adequate for
use with 36 volt linear actuators. For systems employing linear actuators, it is recommended that these
values not be changed from the default values. The provision to modify these parameters is included for
those customers who use the azimuth and elevation drive outputs from the RC2000C to drive a pair of 36
volt relays (equipped with steering diodes) which in turn activate AC motors. More information about
using the RC2000C in this fashion may be found in Appendix F entitled "Controlling Antennas Powered
by AC or Large DC Motors with the RC1000 or RC2000 Antenna Controllers". Access to the CONFIG
mode items described in this chapter is permitted only when the Expert Access flag is set.
The Az/El Drive Options Enable CONFIG mode item is the controlling item for the other CONFIG mode
items described in this chapter. When this item is disabled the user does not have access (via CONFIG
mode) to the other items described in this section. Note that when this item is disabled, the current
values of the other items described in this section are used to control azimuth and elevation movement.
In other words, disabling this item does not reset the other items described in this section to their default
values.
AZ/EL DRIVE OPTIONS ENABLE:0
0-DISABLE, 1-ENABLE
During an automatic move in AUTO mode, the 'Fast Slow Threshold CONFIG mode item is used to set
the number of counts before a target position is reached, when the controller switches the speed of the
drive from fast to slow.
AZ/EL FAST SLOW THRESHOLD: 80
0-400 COUNTS
The Az/El Auto Retry Attempts CONFIG mode item set the maximum number of attempts which will be
made to hit a target position (within 'Max Position Error counts - described below) during an automatic
move initiated from AUTO mode.
AZ/EL AUTO RETRY ATTEMPTS:3
2-5
The 'Fast Deadband and 'Slow Deadband CONFIG mode items are used for the anti-reversal system. To
understand the purpose of these parameters, it is necessary to consider how position counts are
accumulated. The feedback from the azimuth and elevation position sensors are pulses. When a pulse
is received, the controller checks to see which way the antenna was last commanded to move. If the
antenna is moving, or last moved, east (down), the azimuth (elevation) position count is decremented. If
the antenna is moving, or last moved, west (up) the azimuth (elevation) position count is incremented.
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Chapter 5 Modes Function Description
CONFIG
ENT,BKSP,SCRLL ^v
CONFIG
ENT,BKSP,SCRLL ^v
CONFIG
ENT,BKSP,SCRLL ^v
CONFIG
ENT,BKSP,SCRLL ^v
CONFIG
ENT,BKSP,SCRLL ^v
CONFIG
ENT,BKSP,SCRLL ^v
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