RESEARCH CONCEPTS RC1500B Manual page 27

RC1500B Single Axis Tracking Antenna Controller
FIGURE 3.4 Rotating Feed Interface (RC2KPOL Option Only)
Use the following procedure to configure the RC2000C for use with a 24V DC polarization
motor.
1. Connect the polarization/sensor assembly as shown in figure 3.4. Note that shielded cable
is required for the sensor and that the shield MUST be connected to the GROUND terminal
(1) at the back of the controller and MUST NOT be connected to anything at the antenna.
2. The CONFIG mode item Rotating Feed Present must be set to YES (1). Activate CONFIG
mode and use the SCROLL DOWN key to bring up the Rotating Feed Present item and
key in a 1 followed by the ENTER key. (If the Rotating Feed Present item is not accessible
in CONFIG mode, the Expert Access flag has been reset. If this occurs, perform a system
reset as described in section 3.1.)
3. In this step the polarity of the polarization motor and sensor wiring is checked. The motor
polarity is somewhat arbitrary. The polarization jog keys are labeled CW and CCW. The
user is free to define the direction sense as they wish. To change direction or motor
rotation associated with CW and CCW, swap the motor drive wires attached to connector
J4 terminals 4 and 5 (DRIVE).
The important thing is that when the polarization motor is jogged CCW, the position count
MUST INCREASE. If this is not the case, the wires attached to the connector J4 terminals
labeled 3 (REF) and 1 (RTN) must be reversed. Note that the shield must always be
connected to the RTN terminal.
Research Concepts, Inc.; 5420 Martindale; Shawnee, KS 66218
Chapter 3 Installation/Setup
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